Hyundai Midtronics GRX-5100 User manual

Instruction Manual
October 2017
167-000842EN-A
GRX-5100
Hazardous voltage.
An improper connection can result in
serious injury or death.
To avoid electrical shock or burn, never alter
the GRX-5100 Hyundai’s original AC cord and
plug. Disconnect plug from outlet when GRX-
5100 Hyundai is idle.

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Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
www.midtronics.com 3
GRX-5100 Hyundai
General Safety Guidelines 5
Maintenance 5
Personal Precautions 6
Grounding & Power Cord Connections 6
Grounding 7
GRX-5100 Hyundai Location 7
DC Connection Precautions 7
Chapter 1: Introduction & Overview 8
Safety Precautions 8
Front View 9
Right End Panel 9
Connection Panel 9
Display and Keypad 10
Data Entry Methods 11
Menu Icons 11
Option Buttons 11
Scrolling Lists 11
Alphanumeric Entry 11
Main Menu 11
Tool Info Menu 12
Utility Menu 12
Connecting to AC Power 12
Initial Startup 12
Changing User Preferences 12
Chapter 2: Module Balance 13
Parameters 13
Procedure 13
Results 13
Chapter 3: Module Info 14
Procedure 14
Chapter 4: Tool Info 15
Totals 15
Life Time Totals 15
Version 15
Chapter 5: Utility Menu 16
Clock 16
Mode 16
Time 16
Format 16
Date 16
Users 16
Entering A New User ID 16
Deleting A User ID 17
Editing A User ID 17
Display 17
Temperature 17
Capacity 17
Language 17
Admin 18
Options 18
Clear Test Totals 18
Reset Defaults 18
Change Admin Pin 18
Update 18
Buzzer 18
Chapter 6: Error Messages 19
Possible Error Messages 19
Hardware Error 19
Communication Error 19
Internal Temperature Sensor Failure 19
Incorrect Voltage Detected 19
Voltage Matches Target Voltage 19
Contents

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Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
www.midtronics.com 5
General Safety Guidelines
GRX-5100 Hyundai
IT IS OF UTMOST IMPORTANCE THAT BEFORE USING YOUR
GRX-5100 Hyundai,YOU READ THIS MANUAL AND FOLLOW
THE SAFETY AND OPERATING INSTRUCTIONS EXACTLY.
Hazardous voltage.
Can result in electric shock when the
protective covers are removed.
Circuit boards, test points, and output volt-
ages also may be oating above (below) chassis
ground.
This GRX-5100 Hyundai is designed for
indoor use only.
1. Maintenance
•Periodic inspection and care are highly recommended, es-
pecially if the GRX-5100 Hyundai is operating in a harsh
environment.
•Inspect signs of overheating, rust paint deterioration, and
general condition of the unit. Corrective measures should
be taken if necessary.
•Removal of dust, dirt, and debris from the external enclo-
sure surfaces is encouraged and may be performed while
the unit is in operation.
IMPORTANT: There are no user-serviceable parts
inside the GRX-5100 Hyundai. At no time should
personnel remove any cover.
•Ensure that the AC power line ground is connected prop-
erly to the GRX-5100 Hyundai input connector or chassis.
Similarly, other power ground lines including those to ap-
plication and maintenance equipment must be grounded
properly for both personnel and equipment safety.
•Always ensure that AC input power is de-energized prior
to connecting or disconnecting any cable.
•In normal operation, the operator does not have access
to hazardous voltages within the chassis. However, de-
pending on the user's application conguration, HIGH
VOLTAGES HAZARDOUS TO HUMAN SAFETY may be nor-
mally generated on the output terminals. The customer/
user must ensure that the output power lines are labeled
properly as to the safety hazards and that any inadvertent
contact with hazardous voltages is eliminated.
•This GRX-5100 Hyundai is not intended for use by persons
(including children) with reduced physical, sensory or men-
tal capabilities, or lack of experience and knowledge, unless
they have been given supervision or instruction concerning
use of the GRX-5100 Hyundai by a person responsible for their
safety.
Risk of explosive gases
Batteries generate explosive gases during normal
operation, and when discharged or charged.
1.1 To reduce risk of battery explosion, follow these safety
instructions and those published by the battery manu-
facturer and the manufacturer of any equipment you in-
tend to use in the vicinity of a battery. Review cautionary
marking on these products and on the engine, and on the
vehicle or equipment containing the battery.
Charging a non-rechargeable battery may
cause the battery to burst.
To reduce the risk of injury, only charge rechargeable
type batteries.
If you are uncertain as to the type of battery you are attempting
to charge, or the correct procedure for checking the battery’s
state of charge, contact the seller or battery manufacturer.
1.2 Use of an attachment not recommended or sold by the
GRX-5100 Hyundai manufacturer may result in a risk of
re, electric shock, or injury to persons.
1.3 To reduce risk of damage to the electric plug and cord,
pull by the plug rather than by the cord when disconnect-
ing the GRX-5100 Hyundai.
1.4 Do not operate the GRX-5100 Hyundai if it has received a
sharp blow, been dropped or otherwise damaged in any
way; take it to a qualied service center.
1.5 Do not disassemble the GRX-5100 Hyundai; when repair
is required, contact local sales/service distributor to return
the unit to Midtronics Inc. (see back cover for more infor-
mation). Incorrect reassembly may result in a risk of elec-
tric shock or re.
1.6 To reduce risk of electric shock, unplug the GRX-5100
Hyundai from the AC outlet and auxiliary 12VDC power
cord before attempting any maintenance or cleaning.
Turning o the controls will not reduce this risk.
General Safety Guidelines
IMPORTANT SAFETY INSTRUCTIONS - SAVE
THESE INSTRUCTIONS

GRX-5100 Hyundai
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527 www.midtronics.com
6
General Safety Guidelines
1.7 Connect and disconnect the battery leads only when the
AC supply cord has been disconnected.
1.8 Do not overcharge the battery (See Section 3).
1.9 Charge the battery in a dry, well-ventilated area.
1.10 Never place articles on or around the GRX-5100 Hyundai,
or locate the GRX-5100 Hyundai in a way that will restrict
the ow of cooling air through the cabinet.
1.11 An extension cord should not be used unless absolutely
necessary. (See paragraph 3.3.)
1.12 Have a damaged cord or plug replaced immediately.
Do not expose the GRX-5100 Hyundai to
rain or snow.
2. Personal Precautions
2.1 Always have someone within range of your voice, or close
enough to come to your aid, when working around batteries.
2.2 Have plenty of fresh water and soap nearby in case battery
electrolyte contacts skin, clothing or eyes.
2.3 Wear complete eye protection, clothing protection, and
wear rubber soled shoes. When ground is very wet or cov-
ered with snow, wear rubber boots. Avoid touching eyes
while working near battery.
2.4 If battery electrolyte contacts skin or clothing, wash im-
mediately with soap and water. If electrolyte enters the
eye, immediately ush with cold running water for at least
10 minutes, and seek medical attention.
2.5 NEVER smoke or allow a spark or ame in vicinity of a bat-
tery or engine.
2.6 Be extra cautious to reduce risk of dropping a metal tool
onto the battery. It might spark or short circuit the battery
or other electrical part that may cause an explosion.
2.7 Before working with a battery, remove personal metal
items such as rings, bracelets, necklaces, watches, etc. A
battery can produce a short circuit current high enough
to weld such items causing a severe burn.
Non-rechargeable batteries may burst when
charging causing personal injury and damage.
To avoid electrical shock or burn, never alter the GRX-5100
Hyundai’s original AC cord and plug. Disconnect plug from
outlet when GRX-5100 Hyundai is idle.
The GRX-5100 Hyundai is not intended to supply power
to a low-voltage electrical system other than applications
using rechargeable batteries.
2.8 NEVER charge a frozen battery; thaw it out rst.
3. Grounding & Power Cord Connections
3.1 The GRX-5100 Hyundai must be grounded to reduce risk
of electric shock. The GRX-5100 Hyundai is equipped with
an electric cord having an equipment grounding conduc-
tor and a grounding plug. The plug must be plugged into
an outlet that is properly installed and grounded in accor-
dance with all local codes and ordinances.
Hazardous voltage.
An improper connection can result in
electric shock
To avoid electrical shock or burn, never alter
the GRX-5100 Hyundai’s original AC cord and
plug. Disconnect plug from outlet when GRX-
5100 Hyundai is idle.
IFTHE PLUG DOES NOT FITTHE OUTLET, HAVE A PROPER
OUTLET INSTALLED BY A QUALIFIED ELECTRICIAN.
3.2 This GRX-5100 Hyundai is for use on a nominal 120-volt cir-
cuit and has a grounding plug that looks like the plug illus-
trated in Figure A. A temporary adapter, which looks like the
adapter illustrated in Figures B and C, may be used to con-
nect this plug to a two-pole receptacle as shown in Figure B,
if a properly grounded outlet is not available.The temporary
adapter should be used only until a properly grounded out-
let can be installed by a qualied electrician.
Hazardous voltage.
An improper connection can result in
electric shock
Before using an adapter be certain the center
screw of the outlet plate is grounded. The rigid
ear or lug extending from the adapter must be
connected to a properly grounded outlet. Make
certain it is grounded. If necessary, replace the
original screw that secures the adapter ear or
lug to the cover plate and make the ground
connection to the grounded outlet.
USE OF AN ADAPTER IS NOT ALLOWED IN CANADA. IF A
GROUNDING-TYPE RECEPTACLE IS NOT AVAILABLE, DO
NOT USE THIS APPLIANCE UNTIL THE PROPER OUTLET IS
INSTALLED BY A QUALIFIED ELECTRICIAN.

Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
www.midtronics.com 7
General Safety Guidelines
GRX-5100 Hyundai
3.3 An extension cord should not be used unless absolutely
necessary. Use of an improper extension cord could result
in a risk of re and electric shock. If an extension cord must
be used, make sure:
a. that the pins on plugs of the extension cord are the
same number, size, and shape as those of the plug
on the GRX-5100 Hyundai;
b. that the extension cord is properly wired and in
good electrical condition;
c. that the wire size is large enough for the AC ampere
rating of GRX-5100 Hyundai as specied in the table.
4. Grounding
4.1 The plugs and receptacles have dedicated grounding
terminals and must be mated with plugs and receptacles
having matching grounding terminals
5. GRX-5100 Hyundai Location
IMPORTANT: The GRX-5100 Hyundai is designed for
indoor use only!.
It is the responsibility of the operator to provide a controlled
environment for the equipment. Work tents are a common
method of protecting equipment in adverse conditions.
The GRX-5100 Hyundai depends upon the surrounding air for
cooling. The free ow of air is important as is the air temperature.
The GRX-5100 Hyundai must be mounted so that air can freely
circulate all around it.
5.1 Do not place combustible materials on or near the GRX-
5100 Hyundai or mount the GRX-5100 Hyundai closer
than 3 inches from any adjacent wall. The GRX-5100
Hyundai must never be mounted next to or above heat
generating equipment.
5.2 Locate the GRX-5100 Hyundai as far away from the battery
as the cables permit.
5.3 Never place the GRX-5100 Hyundai directly above the bat-
tery being charged; gases from the battery will corrode
and damage the GRX-5100 Hyundai.
5.4 Only operate the GRX-5100 Hyundai in a well-ventilated
area that is free of dangerous vapors.
5.5 Store the GRX-5100 Hyundai in safe, dry location.
6. DC Connection Precautions
6.1 All switches should be set in the OFF position and AC cord
should be DISCONNECTED from electrical outlet before you
connect the output cables.
Hazardous voltage.
Can cause death or serious
personal injury.
Setting the switches to “OFF” does not always
disconnect the EV/HEV Battery Service Tool
electrical circuit from the AC power cord.
Recommended minimum AWG* size for extension cords for the GRX-5100 Hyundai
AC input rating amperes AWG* size of cord
Equal or greater than: But less than:
Length of cord, feet (m)
25
(7.6)
50
(15.2)
100
(30.5)
150
(45.6)
8 10 18 14 12 10
10 12 16 14 10 8
12 14 16 12 10 8
14 16 16 12 10 8
16 18 14 12 8 8
*American Wire Gauge

GRX-5100 Hyundai
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527 www.midtronics.com
8
Chapter 1: Introduction & Overview
Safety Precautions
For safe, ecient, and accurate charging and discharging,
review the safety and operating instructions in this manual
before using the EV/HEV Battery Service Tool. In addition,
follow all manufacturers’ instructions and SAE instructions.
Always use the necessary safety precautions when working
with batteries to prevent severe injury or death. Follow all
manufacturers’instructions and SAE safety recommendations,
which include the following precautions:
Risk of explosive gases.
Never smoke or allow a spark or
ame in the vicinity of a battery.
Batteries can produce a highly explosive mix
of gases, even when the battery is not in
operation. Always work in a well-ventilated
area..
Wash hands after handling.
REQUIRED BY CALIFORNIA PROP. 65: Battery posts, termi-
nals, and related accessories can contain lead and lead
compounds, chemicals known to the state of California
to cause cancer and birth defects or other reproductive
harm.
Battery electrolyte is highly corrosive. If electrolyte enters
your eyes, immediately ush them thoroughly with cold
running water for at least 10 minutes and seek medical
attention. If battery electrolyte gets on your skin or cloth-
ing, wash immediately with a mixture of water and baking
soda.
Always wear proper safety glasses or face shield when
working with or around batteries.
Keep hair, hands, and clothing as well as the analyzer
cords and cables away from moving engine parts.
Remove any jewelry or watches before you start servicing
the battery.
Use caution when working with metallic tools to prevent
sparks or short circuits.
Never lean over a battery when charging or discharging.
Never charge a frozen battery. Gases may form, cracking
the case, and spray out battery electrolyte.
Conventions Used in This Manual
To help you learn how to use your GRX-5100 Hyundai, the
manual uses these symbols and typographical conventions:
Symbols And Typographical Conventions
Convention Description
!
The safety symbol indicates instructions
for avoiding hazardous conditions and
personal injury.
The safety symbol with the words
CAUTION, WARNING, or DANGER
indicates instructions for avoiding
hazardous conditions and personal injury.
The wrench symbol indicates procedural
notes and helpful information.
CAPITAL
LETTERS
The text for screen options are in regular
capital letters.
NEXT The text for soft keys are in Bold capital
letters.
Chapter 1: Introduction & Overview

Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
www.midtronics.com 9
Chapter 1: Introduction & Overview
GRX-5100 Hyundai
Front View



Lifting Handles
Emergency STOP Button
Keyboard & Display
Right End Panel



Connection Panel
11A Midget Fuse
High Voltage Cable Connection
Connection Panel




External 12V Auxiliary Power
Antenna Connector (not used)
USB-A Port
For connecting an external USB-style jump drive.
GR-8
Not used.
RS-232
For future use.
USB-B
For future use.
Diagnostic Indicator LED Lights
VIM Low Voltage Cable Connection
Used to connect to the low voltage battery electronic
control unit based on the application.

GRX-5100 Hyundai
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527 www.midtronics.com
10
Chapter 1: Introduction & Overview
Display and Keypad
The display and keypad work together to help you quickly
nd and use the right tools at the right time. The display also
keeps you on track with onscreen navigation aids, directions
and messages. The illustration shows how the elements on the
screen relate to the keypad.








Title Bar
The title bar shows you the name of the current menu,
utility, or function.
Soft Keys
Press the two soft keys linked to the bottom of the screen
to perform the functions displayed above them. The
functions change depending on the menu or test process.
So it may be helpful to think of the words appearing above
them as part of the keys.
ARROW ()Keys
Press the ARROW keys to scroll to numerical values and
move to menus and icons.
POWER Key
Press the POWER key to turn the control module ON
and OFF.
Selection Area
The selection area below the Title Bar contains selectable
items or dialog boxes that display information or require
a response.
Menu Screen Arrows
When displayed in menu screens, the menu screen arrows
show you which ARROW key on the keypad to press to
display other icons or screens.
For example, the up and down arrows indicate when to
press or to display the screens above and below the
current screen. The left and right menu screen arrows tell
you when to use  or  to select an icon.
When displayed under a list of options, the menu screen
arrows show you which keypad arrow to press to highlight
a character or item in a list.
Scroll Bar
Another navigational aid is the scroll bar on the right side
of the screen. The position of its scroll box shows you
whether the screen is the top (or only screen), middle, or
last in a series.
Some screens also indicate the page order with a notation
such as P1/3 (page 1 of 3).
Top or only
screen
Middle
screen
Last
screen
Scroll
Box
Alphanumeric Keypad
In some cases, you can use the alphanumeric keypad to
enter numerical test parameters instead of scrolling to
them with the ARROW keys.
You can also use the alphanumeric keys to create and edit
customer coupons and your shop contact information on
printed test results, and manage User IDs.
To add a space, press . To erase a space and insert a
character, press .

Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
www.midtronics.com 11
Chapter 1: Introduction & Overview
GRX-5100 Hyundai
Refer to the following table for the characters associated
with each alphanumeric key.
Key Character
$ - ( ) 1
a b c 2
d e f 3
g h i 4
j k l 5
m n o 6
p q r s 7
t u v 8
w x y z 9
% , . # 0
Alphanumeric Keys and Associated Characters
Data Entry Methods
Typically, the soft key below the right half of the screen
conrms your choice, although the command above it may
vary. (Examples: SELECT, NEXT, and SAVE.) In a similar
fashion, the soft key below the left half of the screen cancels
your choice or returns you to the previous screen, although
the word above it may also vary. (Examples: BACK and CLEAR.)
Menu Icons
A menu icon is a graphical
representation of a function
you can select, such as the
Diagnostic Icon in the Main
Menu. To select an icon,
use or to highlight it.
Highlighting changes the
icon to a white picture on a black background. To conrm your
selection, press the appropriate soft key.
Option Buttons
Some lists have option
buttons before each item.
To select an item, use or
to move the dot to the
button next to the item. To
conrm your selection, press
the appropriate soft key.
You can also use the alphanumeric keypad to enter the
number preceding the option button of your choice. No
additional keypress is needed to proceed.
Scrolling Lists
Scrolling lists contain items
that extend above and
below the screen. The rst
number above the right soft
key indicates the position in
the list of the highlighted
item. The second number
above the right soft key indicates the number of items in the
list.
To select an item, use or to highlight the item, and press
the appropriate soft key. To move the highlight bar up five
lines at a time, press  . To move the highlight bar down ve
lines at a time, press  .
Alphanumeric Entry
Some selections require you
to use the alpha-numeric
keypad. These “user-
defined” selections have
a blinking horizontal line
(cursor) to the right of the
last character.
Use or to highlight a line for editing. Display the character,
symbol, or number you want by rapidly pressing its key as
many times as needed. If you pause, the cursor moves to the
right. To backspace, press . Use to add a space. Use 
or to highlight a line for editing. When nished, press the
appropriate soft key to save your settings.
Main Menu
The Main Menu is the starting point for all tools and utilities,
which are depicted as icons. Some icons lead directly to the
function they represent, while others are menu icons that lead
to two or more options.
Menu Icon Description
BALANCE
Charge or discharge a module of a battery
pack to a manually entered target voltage.
MODULE
INFO
Displays battery module information including
voltage, number of cells, minimum and
maximum cell voltage, and voltage delta.
TOOL INFO
The Tool Info option lets you view lifetime test
totals. Also use to access software version
information.
UTILITY
Use this function to make modications to the
GRX-5100 Hyundai's administrative settings.

GRX-5100 Hyundai
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527 www.midtronics.com
12
Chapter 1: Introduction & Overview
Tool Info Menu
The Info menu allows you to select and view lifetime
Totals and view Software Version information.
Menu Icon Description
TOTALS
This report displays the total number of
charges and depowerings performed by the
tool.
VERSION
Displays important information about the
GRX-5100 Hyundai's internal software and
serial number.
Utility Menu
The Setup Menu lets you customize your analyzer to
suit your needs. Before testing, check default values
to see what options you may want to change.
Menu Icon Description
CLOCK
Settings to adjust the time.
USERS
Add, edit, or delete your User IDs.
DISPLAY
Settings to adjust the screen contrast and
backlight time.
TEMPERATURE
Select degrees in C or F for temperature
measurements.
CAPACITY
Select between Amp hours or Kilowatt hours
displayed.
LANGUAGE
Sets the language of the display and printouts.
ADMIN
Clear test totals and change the Admin PIN.
UPDATE
Updates the tool software using a USB-style
jump drive.
BUZZER
Allows you to turn the buzzer OFF. Default
is ON.
Connecting to AC Power
Plug the GRX-5100 Hyundai into a dedicated, grounded
nominal 15-amp or higher AC outlet. Press the power switch
to the ON position.
Initial Startup
When you start the GRX-5100 Hyundai for the rst time you are
asked to enter a number of settings so you can already adapt
the GRX-5100 Hyundai to your personal settings. Among these
settings are the language, date, time, etc. This only needs to be
done once; it can be changed afterwards in the Utility Menu.
After turning the GRX-5100 Hyundai on, following the logo
screen, the LANGUAGE selection screen appears on the
display.
1. Select your LANGUAGE preference.
1 ENGLISH
2. Select date format.
1 DD/MM/YYYY (month/day/year)
2 MM/DD/YYYY (day/month/year)
3. Adjust the date and press NEXT to continue .
Use or  to highlight the hour, minutes, or AM or PM.
Use or to adjust the digits.
10 / 17 / 2017
4. Select 24-hour or 12-hour (AM/PM) clock.
1 24 HOUR
2 AM/PM
5. Adjust the tester time setting and press NEXT to continue.
Use or  to select the hour, minutes, or AM or PM. Use
or to adjust the digits.
9: 07 AM
6. Select the default TEMPERATURE.
1 CELSIUS
2 FAHRENHEIT
7. The Main Menu is now displayed on the screen.
Changing User Preferences
Before using your GRX-5100 Hyundai, you may want to change
some of the default settings. Setting preferences are located
in Chapter 6: Utility Menu.

Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
www.midtronics.com 13
Chapter 2: Module Balance
GRX-5100 Hyundai
Use this function to charge or discharge a module of a
battery pack according to manually entered target
voltage, to bring it in balance with the other modules
of the pack.
Hazardous voltage.
An improper connection can result in
electric shock
To avoid electrical shock or burn, never alter
the GRX-5100 Hyundai’s original AC cord and
plug. Disconnect plug from outlet when GRX-
5100 Hyundai is idle.
IMPORTANT: Make sure to properly prepare the bat-
tery pack by following all required Hyundai guidelines
Refer to your Hyundai documentation for complete in-
formation.
Before balancing a battery module, make sure all of the
external components connected to the GRX-5100 Hyundai are
in good working order.
Parameters
Discharge
– Discharge mode set to constant current – constant voltage
– Maximum discharge current is 7.5A or module max
Charge
– Charge mode set to constant current – constant voltage
– Charge current is 5.0A or module max
– Failsafe timer set to 12 hours
Procedure
1. Select the Module Balance icon.
2. Select the module classication.
1 AE MODULE
2 TEV MODULE
3. Select the module type.
1 EV
2 HEV
3 PHEV
4. Select the specic module to be balanced.
5. If you are wearing the appropriate personal protective
equipment for high voltage service, select YES.
6. Select the correct TARGET VOLTAGE.
28.00 V
The GRX-5100 Hyundai performs a Self-Test before
advancing to the next step.
7. Connect the High Voltage cable from the GRX-5100 to the
module.
8. Connect the Cell Voltage interface Cable from the BCU-64
to the Module.
9. For modules that have readable temperature sensors,
connect the Temperature Sensors Interface Cable from
the BCU-64 to the Module.
10. Press NEXT to continue. The BALANCING status screen is
displayed.
11. Use or to scroll to the Cell Voltage and Temp Sensors
screens.
NOTE: For CELL VOLTAGE, depending on the bat-
tery type, 4 or 8 cell voltages will be displayed. For
TEMP SENSORS, depending on the battery type,
3, 5 or 6 temperature sensors will be displayed.
Results
Following a successful Manual Balance session, the results
are written to an inserted USB jump drive. The results are
displayed on the GRX-5100 Hyundai using multiple screens.
1. Use or to scroll through the screens
2. Use or to scroll to the Cell Voltage and Temp Sensors
screens.
3. Press EXIT to return to the Main Menu.
The GRX-5100 Hyundai can now be disconnected from the
battery module.
Chapter 2: Module Balance

GRX-5100 Hyundai
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14
Chapter 3: Module Info
The Module Info function displays general battery
module and battery cell information on the GRX-5100
Hyundai display screen.
Procedure
1. Select the Module Balance icon.
2. Select the Battery Type.
1 AE MODULE
2 TEV MODULE
3. Select the HVB MODULE.
1 EV
2 HEV
3 PHEV
4. Select the MODULE TYPE.
5. If you are wearing the appropriate personal protective
equipment for high voltage service, select YES.
6. Connect the High Voltage cable from the GRX-5100 to the
module.
7. Connect the Cell Voltage interface Cable from the BCU-64
to the Module.
8. For modules that have readable temperature sensors,
connect the Temperature Sensors Interface Cable from
the BCU-64 to the Module.
9. Press NEXT to continue. The MODULE INFO status screen
is displayed.
10. Use or to scroll to the Cell Voltage and Temp Sensors
screens.
NOTE: For CELL VOLTAGE, depending on the bat-
tery type, 4 or 8 cell voltages will be displayed. For
TEMP SENSORS, depending on the battery type,
3, 5 or 6 temperature sensors will be displayed.
Chapter 3: Module Info

Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
www.midtronics.com 15
Chapter 4: Tool Info
GRX-5100 Hyundai
The Tool Info Menu has two (2) utilities to help you
track the usage and history of your EL-50332.
Totals
The TOTALS function counts the number of charges or
de-powerings and tracks the results.
1 LIFE TIME TOTALS
Select the Totals option you want to see and press NEXT to
continue.
Life Time Totals
LIFE TIME TOTALS show the total number of times the tool is
used to determine health and charge of battery packs and
battery sections.
Version
The VERSION utility displays software, tool serial num-
ber, WiFi, and BCU-64 information. Use or to
scroll between the screens.
Chapter 4: Tool Info

GRX-5100 Hyundai
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527 www.midtronics.com
16
Chapter 5: Utility Menu
The Utility Menu has several functions that you can use
to customize the GRX-5100 Hyundai user interface.
NOTE: If the PIN function is enabled, y ou will need to
enter the 5-digit PIN when accessing the Utility func-
tion of the GRX-5100 Hyundai.
Clock
The CLOCK ADJUST utility has three settings. Use 
or to highlight the setting you want to change.
Although the date and time have been set at the factory,
you may want to make adjustments based your time zone or
Daylight Saving Time.
MODE : AM/PM
TIME : 9:07 AM
FORMAT : /DD/MM/YYYY
Mode
1. Use or to select the MODE and press NEXT to continue.
2. Use or to select 24-hour or 12-hour (AM/PM) clock
and press NEXT to continue, or press the corresponding
number key.
1 24 HOUR
2 AM/PM
3. If you used the ARROW keys, press SAVE to save your set-
ting or BACK to return to the CLOCK/DATE screen without
saving the changes.
Time
1. Use or to select the TIME and press NEXT to continue.
2. Use or  to select the hour, minutes, or AM or PM. Use
or to adjust the digits.
9: 07 AM
3. Press SAVE to save your setting, or press BACK to return to
the CLOCK/DATE screen.
Format
1. Use or to select the FORMAT and press NEXT to continue.
2. Use or to select date format and press NEXT to con-
tinue, or press the corresponding number key.
1 MM/DD/YYYY (month/day/year)
2 DD/MM/YYYY (day/month/year)
3. If you used the ARROW keys, press SAVE to save your set-
ting or BACK to return to the CLOCK/DATE screen without
saving the changes.
Date
Date setting is only allowed at the rst time use and cannot be
adjusted through the Utility Menu.
1. Use or to s elect the DATE and press NEXT to con-
tinue , and press NEXT to continue.
2. Use or  to highlight the day, month, or year. Use or
to adjust the digits.
9/ 14 / 2017
3. Press SAVE to save your settings.
Users
The USERS utility allows you to create and edit a USER
ID with 1 to 7 alphanumeric characters and link it to a
test counter. It also allows you to delete a USER ID and
its associated test total.
Entering A New User ID
1. Use or to select ENTER NEW and press NEXT to con-
tinue, or press the corresponding number key.
1 ENTER NEW
2 DELETE
3 EDIT
2. Use or to scroll to the ID placeholder you want to
use. To display more placeholders, continue scrolling or
use or to jump up or down through the list ve lines
at a time.
1 TECH01
2 TECH02
3 TECH03
4 TECH04
3. Press NEXT to continue.
4. To clear the default characters, press as many times as
necessary. To add a space, move the cursor forward by
pressing .
ENTER USER ID
TECH01
5. Insert a character by pressing the alphanumeric key asso-
ciated with the character as many times as needed. Press
SAVE.
ENTER USER ID
DAN
6. If USER PIN is enabled, after enter a User ID, you need to
enter a corresponding new User PIN.
Chapter 5: Utility Menu

Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
www.midtronics.com 17
Chapter 5: Utility Menu
GRX-5100 Hyundai
Deleting A User ID
NOTE: You cannot delete the default USER ID place-
holders (i.e., TECH03).
1. Use or to select DELETE and press NEXT to display
the list of IDs, or press the corresponding number key.
1 ENTER NEW
2 DELETE
3 EDIT
2. Use the ARROW keys to select a USER ID as described in
step 2 in “Entering a New User ID”.
1 DAN
2 DAVID
3 TECH03
4 TECH04
3. Press DELETE to continue.
4. At the conrmation screen, press YES to conrm that you
want to delete the user and return to the DELETE users
screen.
Editing A User ID
1. Use or to select EDIT and press NEXT to continue, or
press the corresponding number key.:
1 ENTER NEW
2 DELETE
3 EDIT
2. Use the ARROW keys to select USER ID that you want to
edit and press NEXT to continue.
1 DAN
2 DAVID
3 ALEX
4 TECH04
3. Use or to scroll to the ID placeholder you want to use.
To display more placeholders, continue scrolling or use 
or to jump up or down through the list ve lines at a time.
4. Press NEXT to continue.
5. To clear the default characters, press as many times as
necessary. To add a space, move the cursor forward by
pressing .
6. Insert a character by pressing the alphanumeric key asso-
ciated with the character as many times as needed.
7. Press SAVE to save your changes.
8. If USER PIN is enabled, after edit a User ID, you need to
enter a corresponding User PIN.
Display
The DISPLAY utility allows you to adjust the contrast
of the text on the display and the backlight time.
The contrast level is 0 (lightest) to 10 (darkest). To change it:
1. Press or to adjust the LCD contrast, or use the cor-
responding number keys.
8(1-10)
2. Press SAVE to save your setting or BACK to return to the
LCD OPTIONS screen without saving the changes.
Temperature
The TEMPERATURE utility allows you to set the units
of measurement to either Fahrenheit or Celsius. To set
your preference:
1. Select the TEMPERATURE units.
1 DEGREES F
2 DEGREES C
2. If you used the ARROW keys, press SAVE to save your set-
ting or BACK to return to the Utility Menu without saving
the changes.
Capacity
Use t he CAPACITY function to select the units of bat-
tery capacity between Kilowatt hours and Amp hours.
1. Select the battery CAPACITY units.
1 AMP HOURS
2 KILOWATT HOURS
2. Press SAVE or BACK to return to the Utility Menu without
saving any changes.
Language
The LANGUAGE utility allows you to select a language
for the display and printouts. You can override the se-
lection when the GRX-5100 Hyundai displays the lan-
guage option after you turn it on or print results.
1. Select the LANGUAGE.
1 ENGLISH
2. If you used the ARROW keys, press SAVE to save your set-
ting or BACK to return to the Utility Menu without saving
the changes.

GRX-5100 Hyundai
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527 www.midtronics.com
18
Chapter 5: Utility Menu
Admin
Select the ADMIN icon to display a list of administra-
tive functions:
1 OPTIONS
2 CLEAR TEST TOTALS
3 RESET DEFAULTS
4 CHANGE ADMIN PIN
Options
In the OPTIONS section there are three functions that allow
you to control user access to the Main Menu and Admin Menu.
1 – USER ID
Select this setting to enable (ON) or disable (OFF) the
USER ID login screen.
2 – UNREG. USER
Select this setting to enable (ON) or disable (OFF)
unregistered login access to the GRX-5100 Hyundai.
3 – PIN
Select this setting to enable or disable the ADMIN PIN
number.
Each option is easily enabled or disabled by turning it ON or OFF.
To save your settings after each selection, press SAVE.
To return to the administrative functions list without saving,
press BACK.
Clear Test Totals
This function allows you to clear the test totals by User ID and
battery test decision. The GRX-5100 Hyundai veries that you
want the counter reset to 0 before it continues.
NOTE: This will not clear the lifetime test total avail-
able in the VERSION information screen.
Reset Defaults
This function allows you to reset Administrative options to
their original settings. It will clear all registered users.
Option Default Settings
1– USER ID ON
2 – UNREG. USER OFF
3 – PIN Not Available
Change Admin Pin
This function allows you to enter a new 5-digit Admin Pin.
Update
When software updates become available, use this
utility to update the GRX-5100 Hyundai using a USB-
style jump drive inserted into the USB-A port.
When performing an update, the GRX-5100 Hyundai will rst
check the inserted USB drive. Next the version information of
the currently loaded software and the new version information
found on the drive is displayed on the screen.
IMPORTANT: The BSU must be connected when up-
dating the GRX-5100 Hyundai software.
Buzzer
The BUZZER utility allows you to enable or disable the
warning tone that alerts you if the clamps are con-
nected improperly and or there are other errors.
1. Select the BUZZER.
1 OFF
2 ON
2. If you used the ARROW keys, press SAVE to save your set-
ting or BACK to return to the Utility Menu without saving
the changes.

Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
www.midtronics.com 19
Chapter 6: Error Messages
GRX-5100 Hyundai
The table below will help you troubleshoot test messages. If
troubleshooting does not solve the problem, call your local
sales/service distributor.
Possible Error Messages
Hardware Error
This error can be generated by damaged or improperly
connected cables. To clear the error, turn o the GRX-5100
Hyundai, re-seat the cable connections, and power the GRX-
5100 Hyundai back up.
If the error message reappears contact your local sales/service
distributor for service.
Communication Error
Indicates an internal communication problem in the GRX-5100
Hyundai.
Internal Temperature Sensor Failure
Contact your local sales/service distributor for service.
Incorrect Voltage Detected
The voltage of the battery is out of range.
Voltage Matches Target Voltage
The measured voltage of the battery module is already at the
enteredTargetVoltage. No additional conditioning is required.
Chapter 6: Error Messages

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Corporate Headquarters
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Phone: [phone]
Canadian Inquiries
Toll Free: 1.866.592.8052
Midtronics B.V.
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Serving Europe and Africa
Phone: [phone]
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China Operations
Shenzhen, China
Phone: [phone]
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Mumbai, India
Phone.: [phone]/1513
Asia/Pacic (excludingChina)
Contact Corporate Headquarters
Tel.: [phone]
www.midtronics.com
PATENTS
The GRX Battery Diagnostic Station is made by Midtronics, Inc., and is protected by one or more U.S. and foreign patents.
For specic patent information, contact Midtronics, Inc. at [phone].
LIMITED WARRANTY
The GRX Battery Diagnostic Station is warranted to be free of defects in materials and workmanship for a period of two years
from date of purchase. The cables are excluded from this warranty.
Midtronics will, at our option, repair or replace the equipment with a remanufactured equipment. This limited warranty
applies only to the specied equipment, and does not cover any other equipment, static damage, water damage,
over-voltage damage, dropping the units, or damage resulting from extraneous causes including owner misuse. Midtronics
is not liable for any incidental or consequential damages for breach of this warranty. The warranty is void if owner attempts
to disassemble the Battery Diagnostic Station.