Radio Replacement and
Steering Wheel Control Interface
for Toyota / Lexus / Scion Vehicles
RP4.2-TY11
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, utilize short press long press dual command functionality, or
assign the programmable 12v output to a SWC button. 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 flash 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 specific order shown in the chart on page 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 programming button on the side of the interface to
skip that function. The LED will flash off and on confirming 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 below.
Steering Wheel Controls
Alpine
JVC
Kenwood
Clarion
Pioneer
Sony
Fusion
Volume -
Volume -
Volume -
Volume -
Volume -
Volume -
Volume -
Volume -
Mode
Source
Source
Source
Source
Source
Source
Source
Back
Band
Att
Play
Band
Band
Band
N/P
Voice
VR
Mute
Mute
VR
VR
VR
Mute
Answer
Receive
Receive
Off Hook
Send
Answer
Answer
Power
End
End
Reject
On Hook
End
End
Reject/Source N/P
Enter
Power
Power
Preset Up
N/P
Mute
N/P
Power
Arrow Up
Track Up
Track Up
Track Up
Track Up
Track Up
Track Up
Track Up
Arrow Down Track Down Track Down Track Down Track Down Track Down Track Down
Track Down
Arrow Left
Preset Down Disc Down Disc Down N/P
Preset Down Preset Down N/P
Arrow Right Preset Up
Disc Up
Disc Up
N/P
Preset Up
Preset Up
N/P
Default SWC Button Assignments