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 amplifier. 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 amplified systems is only supported with the “amplified 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 amplifier.
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
Amplified Audio Output
Non-Amplified Audio Output
Programming Button
USB Port
Radio Select DIP switches
Interface Connector 4
Amplified Audio Output Level Adjustment
