PAC RP4.2-TY11 User Manual (English)

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Radio Replacement and

Steering Wheel Control Interface

for Toyota / Lexus / Scion Vehicles

RP4.2-TY11

Introduction & Features

Important Notes

The RP4.2-TY11 interface allows the replacement of a factory radio in select Toyota/Lexus/Scion vehicles and will retain

factory features such as steering wheel controls (SWC) 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. These instructions only apply to R.2.1.1.43 or later revisions. The revision info can be found on a small white sticker on the

interface and packaging.

2. Connection of the White / Red and White / Black wires is not always necessary. Use of these wires will be dependent on whether

or not the aftermarket radio requires specific connections, and whether the vehicle provides these outputs at the radio. See the

“Installation Steps” section starting on page 3 for additional information.

3. 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 you desire prior to removal of the original radio.

4. The RP4.2-TY11 does not retain Rear Seat Entertainment.

5. After installation, if you do not initially hear any audio, you may need to cycle the ignition again to initialize the factory amplifier.

6. Speaker fading on factory amplified systems is only supported with the “amplified output” connection of the RP4.2-TY11.

7. 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.

8. 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-TY11’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.

9. The USB-TY1 or USB-TY2 must be purchased in order to retain the factory USB port.

10. The CAM-TY11 or CAM-TY12 must be purchased in order to retain the factory reverse camera.

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

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General

Product Type	Radio Replacement Interface
Amplifier Turn On	Yes
Chime Retention	Yes
Compatibility	Toyota, Scion, Lexus
Functionality	Retains factory features when replacing the radio
Installation	Plug-and-play
Steering Wheel Control	Retains factory steering wheel controls
Navigation Outputs	Provides navigation outputs for reverse, parking brake, and speed sense
Retained Features	Factory amplifier, steering wheel controls
USB Port	No
Bluetooth	No
Backup Camera	Retains factory backup camera