PAC RP4.2-TY13 User manual

Radio Replacement and
Steering Wheel Control Interface
for Select Toyota Vehicles
RP4.2-TY13
© 2022 AAMP Global. All rights reserved. PAC is a Power Brand of AAMP Global.
PAC-audio.com
Pacific Accessory Corporation
Page 1
Rev: V3
Date:032222
Introduction and Features
Important Notes
The RP4.2-TY13 interface allows the replacement of a factory radio in select Toyota vehicles and will retain factory
features such as steering wheel controls (SWC), rear camera and the factory audio amplier. This interface also allows
you to program two radio functions to each SWC button by using short press long press dual command functionality,
and also provides outputs such as: vehicle speed signal (VSS), illumination, reverse trigger and parking brake.
1. Adjustment of the vehicle settings through the original radio’s vehicle settings menu will be disabled after installation of the new
radio. It is advised to make sure all settings are as desired prior to removal of the original radio.
2. The RP4.2-TY13 does not retain Rear Seat Entertainment.
3. Speaker fading on factory amplied systems is only supported with the “amplied output” connection of the RP4.2-TY13.
4. When using real time fade, if the fader setting is biased more to the front or rear, as the radio turns on the sound may begin at the
default setting and then quickly transition to your custom setting.
5. Aftermarket radio features such as High Pass Filters (crossovers), DSP or “Network Mode” will interfere with proper fader function.
In order for the RP4.2-TY13’s fader function to work, the audio from the aftermarket radio’s output must match so it can compare the
front and rear audio levels and determine the proper fader setting for the factory amplier.
6. A USB adapter must be purchased in order to retain the factory USB port. Please refer to www.pac-audio.com to see which harness
you will need.
7. To retain AM/FM Radio and SiriusXM Radio, additional parts and adapters are required and sold separately.
Module Layout
Module Status LED
USB Status LED
Interface Connector 1
Expansion Port
Interface Connector 2
Amplied Audio Output
Non-Amplied Audio Output
Programming Button
USB Port
Radio Select DIP switches
Interface Connector 4
Amplied Audio Output Level Adjustment

Radio Replacement and
Steering Wheel Control Interface
for Select Toyota Vehicles
RP4.2-TY13
© 2022 AAMP Global. All rights reserved. PAC is a Power Brand of AAMP Global.
PAC-audio.com
Pacific Accessory Corporation
Page 2
Rev: V3
Date:032222
Interface & Harness Connections
Plug Interface Connectors 1, 2 and 4 into the appropriate ports on the RP4.2-TY13 interface (using the diagram on page 1 or the
label on the bottom of the RP4.2-TY13 module). The Connector 3 connection will be dependent upon whether or not the vehicle
has a factory amplied system. Plug Connector 3 into the appropriate port on the RP4.2-TY13; Amplied if the vehicle has a factory
amplier, Non-Amplied for base audio.
Connect the RPA-VA1 Video Adapter to the 6-pin plug on the RP4.2-TY13 harness.
Interface Connector 1 Interface Connector 2 Interface Connector 4
RPA-VA1
Interface Connector 3
Installation Steps
Purple Rear R + input
Purple / Black Rear R - input
Green Rear L + input
Green / Black Rear L - input
Gray Front R + input
Gray / Black Front R - input
White Front L + input
White / Black Front L - input
Blue / Yellow SWC Output / Key 1
Brown SWC Output / Key 2
3.5 mm Jack SWC Output
Pink Vehicle Speed
Sense Output
Light Green Parking Brake
Output
Violet / White Reverse Signal
Output
Orange / White Illumination Output
Blue / White Amp Turn On Input
Blue Not Used
1. Set the Radio Select DIP switches according to the radio you are installing.
2. Wire the aftermarket radio to the RP4.2-TY13 Interface 4 harness according to the
wiring connections chart on this page.
3. Connect the appropriate SWC Output to the aftermarket radio (if applicable).
4. Connect the OEM Camera RCA to the aftermarket radio (if applicable).
5. Once all connections have been made, connect the white, gray and black Vehicle
Connectors to the matching connectors in the vehicle.
6. Turn the ignition on. The LED on the interface will turn on and the +12v accessory
wire will turn on. For factory amplied systems, see “Testing and Verication” section
on page 5 for details on how to set the gain.
7. If the radio does not turn on and the LED on the interface is solid orange, check
the DIP switches on the side of the interface to make sure they are not all in the on
position.
8. If you wish to reassign functions to the SWC, or utilize short press, long press dual
command functionality, follow the programming instructions starting on the following
page.
Aftermarket Radio Wiring Table
Wires from Interface Connector 4
Other = Advent, BOYO, Dual, Lightning Audio, Rockford Fosgate, Visteon
Alpine JVC Kenwood /
Lightning Audio
Clarion /
Stinger
2-Wire
Resistive
Pioneer /
Other* Sony Fusion
1 2 1 & 2 3 2 & 3 1, 2, & 3 4 1 & 4
Set DIP switches that correspond with your radio to the ON position.
Set all other DIP switches to the OFF position.
*Other - Dual / Axxera (these brands could also have 2-wire resistive), Jensen, Rockford Fosgate

Radio Replacement and
Steering Wheel Control Interface
for Select Toyota Vehicles
RP4.2-TY13
© 2022 AAMP Global. All rights reserved. PAC is a Power Brand of AAMP Global.
PAC-audio.com
Pacific Accessory Corporation
Page 3
Rev: V3
Date:032222
Default Steering Wheel Control Programming
IMPORTANT! The interface comes pre-programmed for all of the vehicles factory SWC functions and does not require
programming unless you wish to re-assign the SWC functions or utilize short press long press dual command functionality. The
SWC can always be restored to default settings by pressing and releasing the program button on the side of the interface once
and waiting 7 seconds for the LED to ash 3 times.
Optional Steering Wheel Control Programming
If you wish to re-assign the SWC functions, utilize short press long press dual command functionality, the interface must be
programmed in the specic order shown in the chart on page 4. If you come across a function in the chart that your steering
wheel does not have, or you do not want to program, press and release the programming button on the side of the interface to
skip that function. The LED will ash off and on conrming that you have successfully skipped that function and are ready to
proceed to the next one.
Short Press Long Press Dual Command Functionality
This feature allows you to assign two aftermarket radio functions to each of the vehicles SWC buttons. It can be used with as
many of the buttons as the user likes or none at all. When this functionality is implemented, quickly pressing and releasing a
SWC button will initiate the short press command while pressing and holding a SWC button for longer than two seconds will
initiate the long press command. Please note that no long press commands are programmed by default. If you wish to assign
dual command functionality to the SWC please follow the programming steps on the next page.
Steering Wheel Controls
Default SWC Button Assignments
Alpine JVC Kenwood Clarion Pioneer Sony Fusion
Volume + Volume + Volume + Volume + Volume + Volume + Volume + Volume +
Volume - Volume - Volume - Volume - Volume - Volume - Volume - Volume -
Mode Source Source Source Source Source Source Source
Track Up Track Up Track Up Track Up Track Up Track Up Track Up Track Up
Track Down Track Down Track Down Track Down Track Down Track Down Track Down Track Down
Voice Voice Voice Voice Voice Voice Voice Mute
Answer Receive Receive Off Hook Send Answer Answer Power
End End Reject On Hook End End Reject/Source N/P

Radio Replacement and
Steering Wheel Control Interface
for Select Toyota Vehicles
RP4.2-TY13
© 2022 AAMP Global. All rights reserved. PAC is a Power Brand of AAMP Global.
PAC-audio.com
Pacific Accessory Corporation
Page 4
Rev: V3
Date:032222
Steering Wheel Controls (cont.)
Alpine JVC Kenwood /
Lightning Audio
Clarion /
Nakamichi
2-Wire
Resistive
Pioneer Other * Sony Fusion
1 Volume + Volume +
Volume +
Volume +
Volume + Volume + Volume + Volume +
2 Volume - Volume -
Volume -
Volume -
Volume - Volume - Volume - Volume -
3 Mute Mute
Mute
Mute
Mute Mute Mute Mute
4 Preset + Source
Source
Source
Preset + Preset + Preset + Source
5 Preset - Track +
Play
Search +
Preset - Preset - Preset - Track +
6 Source Track -
Track +
Search -
Source Source Source / End Call Track -
7 Track + Band / Disc +
Track -
Band
Track + Track + Track + Audio
8 Track - Preset / Disc -
Disc / FM +
Send / End
Track - Track - Track - Power
9 Power Select
Disc / AM -
Send
Band Band Band
10 Enter / Play Attenuation Answer End Phone Menu Answer ** Power / End Call
11 Band / Program Phone Receive
Voice Dial
VR
Answer Call End ** Voice Dial / Answer / End Call
12 Receive Phone Reject On Hook End Call PTT ** VR (Android Auto & Car Play)
Answer / End Call***
13 End Voice Dial
Off Hook
VR
14 VR Power
Mute
15 Preset +
No specific
programming
order. Please
refer to the
owners manual
of your particular
radio for
programming
instructions..
* Advent, Boyo, Dual, Lightning Audio, Jensen, Rockford Fosgate & Visteon ** Jensen & Advent ONLY ***
XAV-AX100 Only
Please Note: On any entry with multiple commands, the commands shown are source dependent.
Optional Programming Order
5. If you come across a function in the chart that your steering wheel does not have, or you do not want to program, press and
release the program button on the side of the interface to skip that function.
6. Once programming is completed, wait seven seconds. The LED will ash three times indicating end of programming.
7. Test the interface for proper functionality. Whenever a SWC is pressed the LED on the interface should blink. If any function
does not work, repeat the programming steps.
SWC Re-Calibration Procedure
1. Turn the key to the ignition position.
2. Press and hold the programming button until the LED begins blinking amber.
When the LED begins blinking, release the programming button. The LED will
light solid amber.
3. Within 7 seconds, press and hold the button that is to be learned on the steering
wheel. The LED will turn off when the button is pressed and begin blinking when
the value has been learned. Once the LED begins blinking, release the button.
Please Note: the buttons must be calibrated in the order shown in the chart.
If you press the wrong button the LED will not respond at all.
4. If you need to program more buttons, repeat step 3 for each additional audio
function on the steering wheel.
5. If you come across a function in the chart that your steering wheel does not
have, press and release the program button on the side of the interface to skip
that function.
6. Once programming is completed, wait seven seconds. The LED will ash
indicating end of programming.
7. Test the interface for proper functionality. Whenever a SWC is pressed the
LED on the interface should blink. If any function does not work, repeat the
programming steps.
After you have re-calibrated the SWC buttons, the default SWC button assignments will be the same as what is listed in the
chart on page 3. If you wish to re-assign button functions you must also go through the programming listed above (Optional
SWC Programing Procedure).
Optional SWC Programming Procedure
1. Turn the key to the ignition position.
2. Press and release programming button on the side of the interface. The Status LED will turn green.
3. Within 7 seconds, press the button that is to be learned on the steering wheel. The LED will turn red when the button is pressed.
At this point you have two options:
A. For short press functionality: Release the button within 1.5 seconds. The LED will turn back on.
B. For long press functionality: Hold the button until the LED starts blinking. Release the button and the LED will
go back to solid.
4. If you need to program more buttons, repeat step 3 for each additional audio function on the steering wheel.
Re-Calibration Programming Order
Volume Up
Volume Down
Seek Up
Seek Down
Mode
Voice
Phone Answer
Phone Hang Up

Radio Replacement and
Steering Wheel Control Interface
for Select Toyota Vehicles
RP4.2-TY13
© 2022 AAMP Global. All rights reserved. PAC is a Power Brand of AAMP Global.
PAC-audio.com
Pacific Accessory Corporation
Page 5
Rev: V3
Date:032222
1. Turn the ignition on. The LED on the interface will turn on and the +12v accessory wire will turn on.
2. Turn on the radio and check volume, balance and fade. If you do not hear any audio you may need to cycle the ignition to
initialize the factory amplier.
3. If the overall volume is too low, use the gain adjustment on the side of the RP4.2 interface to set it to the desired level. The
best way to do this is to turn the volume on the radio to 3/4 volume, then turn the gain on the RP4.2 until some distortion is
heard, then back it down a little.
4. If you have a JBL system and there is no audio, please make sure the Blue / White wire in the radio connector is hooked up
properly. If there is still no audio, reset the interface according to the procedure in the next section.
5. If fading is acting inconsistent, please ensure that all speakers are connected to the proper polarity.
6. Verify that all SWC are functioning properly. If any of the SWC are not functioning properly you may need to reset the
interface or follow the re-calibration procedure above.
7. The LED and radio will turn off when the ignition is turned off.
Restoring Factory Settings
You can restore the interface to factory default settings by pressing and holding the programming button on the side of the module
until the status LED starts blinking red. Once the LED starts blinking red, release the button. You must release the button while
the LED is blinking red in order to perform the reset. Please note, the LED will go through two stages before it starts blinking red.
First it will blink green, then amber, then red.
This reset will restore the following settings to their factory defaults:
• SWC Mapping
• Factory Amplier Settings
• Real Time Fade will be reset to on
Testing and Verication
RadioPRO App
Use of the RadioPRO App allows
you to do the following:
• Congure User Interface Options:
• Factory amplier settings (Bass,
Mid, Treble, Gain, Fader and
Balance)
• Real Time Fading
• Update Product Firmware
• Read Firmware/Hardware Versions
PLEASE NOTE:
The interface must be connected to the vehicle when using the following features of the Radio PRO App:
• Factory Amplier Settings
The interface does not need to be connected to the vehicle when using the following features of the Radio PRO App:
• Firmware Updates
• Reading rmware/hardware versions

Radio Replacement and
Steering Wheel Control Interface
for Select Toyota Vehicles
RP4.2-TY13
© 2022 AAMP Global. All rights reserved. PAC is a Power Brand of AAMP Global.
PAC-audio.com
Pacific Accessory Corporation
Page 6
Rev: V3
Date:032222
Infotainment/Factory Amplier Settings
The RadioPRO app will also allow you to adjust the
settings of the factory amplier. You can adjust Amp
Gain, Fader, Balance, Bass, Mid and Treble and real
time fade. When real time fade is enabled in amplied
systems, it will allow fading to be controlled directly
from the aftermarket radio. Restoring factory settings
on the module will default all values back to middle.
RadioPRO App (cont.)
Firmware Updates
The RadioPRO app will also allow you to update the
interface with new rmware as it becomes available.
Please visit www.pac-audio.com or contact our tech
support department to see if there is a rmware update
for your interface.
In order to update the interface all DIP switches must be set to the down position. Connect the interface to your PC and select
“Update Firmware”. Now select “Select File”. Finally, browse to the place where you saved the le and select it. This will begin
the updating process. Once nished, disconnect the interface from the PC and set the DIP switches back according to the radio
you have installed.
Technical Support
Email: [e-mail]
Phone: [phone]
Chat: PAC-Audio.com

Radio Replacement and
Steering Wheel Control Interface
for Select Toyota Vehicles
RP4.2-TY13
© 2022 AAMP Global. All rights reserved. PAC is a Power Brand of AAMP Global.
PAC-audio.com
Pacific Accessory Corporation
Page 7
Rev: V3
Date:032222
Warranty
LIMITED WARRANTY
The quality controls used to manufacture PAC products are designed to ensure your complete satisfaction.
This warranty applies only to the original owner of PAC products purchased from an authorized PAC dealer. It covers PAC
products that, upon inspection by authorized PAC personnel, are found to have failed in normal use due to defects in material or
workmanship. This warranty does not cover installation expenses.
Attempting to service or modify our products, or operate them outside their recommended usage will render this WARRANTY
VOID.
Unless prescribed by law, PAC is not liable for any personal injury, property damage and/or incidental or consequential
damages (including water damage) resulting from product malfunctions, defects and/or misuse. PAC is also not liable for any
products that are altered or improperly installed.
WARRANTY PERIOD AND PROCESS
Within the rst 12 months from date of purchase, subject to the conditions above, PAC will repair or replace product at its sole
discretion if it is found to be defective in material or workmanship. Product must be returned to an authorized PAC dealer with
PROOF OF PURCHASE.