Carax TPMS CRX-1001 User manual

MANUAL
TPMSCRX‐1001

Manual for Tire Pressure Monitoring System, TPMS
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TPMS CRX-1001 Manual
TABLE OF CONTENTS
TIRE PRESSURE MONITORING SYSTEM, TPMS........................................2
NOTICE ...........................................................................................................2
SPECIFICATIONS OF TPMS..........................................................................3
SYSTEM INSTALLATION...............................................................................3
ACCESSORIES FOR TIRE PRESSURE MONITORING SYSTEM ................3
DISPLAY UNIT INSTALLATION.....................................................................4
WIRELESS TRANSMITTER SENSOR INSTALLATION................................5
SYSTEM OPERATION....................................................................................6
SYSTEM ALARM............................................................................................6
SETUP METHOD ............................................................................................7
Tire Under Pressure Warning.............................................................................................. 9
Tire Over Pressure Warning ................................................................................................ 9
Tire Over Temperature Warning........................................................................................ 10
Alarm Instruction ................................................................................................................ 10
RESET FOR TIRE CHANGES AND ROTATION..........................................11
Mode 1: Front to rear tires exchanged ............................................................................ 12
Mode 2: Tires diagonal exchanged.................................................................................. 13
Mode 3: Front tires diagonal exchanged, and Rear tires parallel changed to Front. . 14
Mode 4: Random re-position tires.................................................................................... 15
Mode 5: Single sensor replaced....................................................................................... 16
APPENDIX ....................................................................................................17
ANNEXES .....................................................................................................18
TROUBLESHOOTING GUIDE......................................................................20

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Tire Pressure Monitoring System, TPMS
Tire Pressure Monitoring System (TPMS) improves safety while driving. Once installed in your
vehicle, the system will automatically monitor your tires in real-time for pressure and
temperature. When any tire’s pressure and/or temperature appear abnormal, the system will,
in real-time, transmit signals to active an alarm and show a digital figure to warn the driver of
a problem. The system aids safety, can extend the tire life and help reduce fuel consumption.
NOTICE
FCC Notice
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) this device may not cause harmful interference, and (2) this device must
accept any interference received, including interference that may cause undesired operation.
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This equipment
generates uses and can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can
be determined by turning the equipment off and on, the user is encouraged to try to correct
the interference by one or more of the factoring measures.
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the receiver
is connected
Caution: Any changes or modifications in construction of this device which are not expressly
approved by the party responsible for compliance could void the user’s authority to operate
the equipment.
To comply with the FCC RF exposure compliance requirements, this device and its antenna
must not be co-located or operating to conjunction with any other antenna or transmitter.
System Scope of Use and Warnings
Tire Pressure Monitoring System, TPMS
This system is a sensing device designed to measure and display tire operation and / or
activate an alert to the driver when pressure and temperature irregularities are detected. It is
the responsibility of the driver to react promptly and with discretion to alerts. Abnormal tire
inflation pressure should be corrected at the earliest opportunity.
Caution: The system is wireless RF product; therefore, it may not receive signal due to
interference environment or incorrect operating or installation. When the system continually
cannot receive signal from one of the tire sensor more than 20 minutes since the system be
switched on, the system will show “ E2 ”. In this case, it may cause by a RF interference
environment and driver need to drive the vehicle to other place. If the display still cannot
receive any correct signal from tire sensor, then, driver needs to find a nearby qualified tire
maintain service for checking and maintain. It may cause by a tire sensor damaged or battery
power consumption is low (the battery consumption will be lower than under normal using
condition due to sensors need to send warning signal continually to driver) . If the system
continually cannot receive signal from any sensors more than 20 minutes, the system might
damaged and will show “E1”. Driver needs to drive to other place (there might be a
interference nearby) or send the system to agent for repair
＊System Installation and Usage
Use of the TPMS requires that qualified personnel according to the instructions here have
properly installed it. This system is suitable for use on a passenger car, SUV and 4X4 tires,
with up to maximum cold inflation pressure of 74 Psi (Guage) ,below instruction is Guage
value mentioned.
＊Reacting to Alerts
When an alert or warning is received, reduce vehicle’s speed and proceed to a safe location
to stop where the tire can be inspected and /or serviced.

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The low-pressure alert indicates that the air pressure has dropped to a selected minimum and
a high-temperature alert indicates that the temperature of the tire content has surpassed the
threshold value set.
When the battery voltage icon illuminate which means the battery voltage of vehicle is below
battery voltage default (11v).
＊Use of Chemicals
Temporary resealing or re-inflation products containing internal sealants or propellants in any
tire assembly may adversely affect the operation of the sensor/transmitter.
Specifications of TPMS
1. RECEIVER SPECIFICATINS
Operating voltage
12V DC
Operating current
< 200mA
Storage temperature
-30oC to 75oC
Operating temperature
-25oC to 75oC
2. SENSOR AND TRANSMITTER SPECIFICATIONS
Storage temperature -40
o
C to 125
o
C
Operating temperature
-30oC to 110oC
Operating humidity Max 95%
Operating frequency 433.92MHz
Pressure monitoring range
0~74 psi
Pressure reading accuracy
At Normal condition
± 1psi at normal pressure range
Temperature reading accuracy
± 4oC in normal environmental condition
Transmission power Max 75dBμV/m
Battery 3.0V
Sensor weight 27g ±3g
System Installation
There are two parts of system installation
1. Installing the display unit in the vehicle
2. Installing the transmitter unit sensor in each tire.
We strongly suggest installing the display unit first, and then install the tire transmitters.
Note: Warranty including “Wireless Display Unit and Wireless Transmitter Sensor and Power
Connection cable”, not including other accessories.
When remove transmitter sensors to different tires and replace new transmitter sensors,
suggest to change all of the valve steams and screws.
Accessories for Tire Pressure Monitoring System
NO.
Accessory Name
Quantity
A
Wireless Display Unit
1
B
Velcro for Display
2
C
Power Connection for Cigarette Lighter
1
D
Wireless Transmitter Sensor (Remote Sensing
Module)
4
E
Tire Valves
4
F
Screw for Tire Valves (Nylok screw)
4
Caution: the power connection is NOT COMPATABLE with USB interface; please do not plug
in any USB devices.

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Display Unit Installation
1. Plug in one side of C the power cable connection into A the display located on the side.
2. Connect the power cable C into the vehicle’s cigarette lighter socket for power connection.
( or cut the cigar jet and not to cut the cable more than 5cm. plug the power cable with
ACC, Positive, Negative into fuse box)
Note: Plugging the power cable with ACC, Positive, Negative into fuse box, the LED light will
turn on only when ACC is on and the LED light will be off when ACC is turned off.
3. Install the display unit in front of driver at an appropriate position.
Stick the Velcro B into the bottom of the display unit A, and Stick the unit into the
convenient place.
4. After set up the monitor please take off the protection film from the panel of monitor.
A
F
C
D
E
B
H
A
B
C
Positive (Red)
Plug into car power socket
ACC
(Green)
Power Cable
Antenna (black)
Negative (spiral shield)