User Manual

Pacic Accessory Corporation

| Ph. 866-931-8021 | support@pac-audio.com

www.pac-audio.com

Pacific Accessory Corporation

RP4.2-BM21

Radio Replacement &

Steering Wheel Control Interface

for Select CAN-Bus BMW Vehicles

Rev. 043015

Page 5

RadioPRO App

Use of the RadioPRO App in BMW allows you to do the following:

• Congure user interface options such as:

• Red/White wire output behavior

• Aftermarket radio parking brake sequencing

• Adjust warning chime volume level

• Update product rmware

• Read rmware/hardware versions

• Access product user manuals

Programmable Red/White Wire

The Red/White wire can be programmed to do a pulsed or latched trigger that is controlled by a user assigned steering wheel

control button, or it can be set to provide an output when triggered by the vehicles foot brake, door or trunk. The module will

need to be connected to the vehicle so that the App is able to see what options are available from the specic vehicle. Once

connected, select User Interface Options then set the behavior of the Red/White wire using the drop down menu. PLEASE

NOTE: Available triggers depend on what info is available on the vehicles data bus. Restoring factory settings on the module will

default this wires output back to a latched SWC trigger.

Trunk - This selection will provide a 12v+ output on the Red/White wire whenever the CAN-Bus is active and the trunk is

opened.

Alpine - If you select the “Alpine” setting on the drop down menu, the Red/White wire will then work in conjunction with the

parking brake output to produce the necessary sequencing for settings menu access. This sequencing is based on the actual

parking brake, meaning to produce this sequence you have to engage the parking brake in the vehicle. If you would like to

manually do the necessary foot brake/parking brake sequencing for Alpine, select the “Foot Brake” setting (if available) and the

red/white wire will output a 12v+ signal whenever the CAN-Bus is active and the foot brake is pressed.

Door - This selection will provide a 12v+ output on the red/white wire whenever the CAN-Bus is active and any door on the

vehicle is opened.

Footbrake - This selection will provide a 12v+ output on the red/white wire whenever the CAN-Bus is active and the foot brake

is pressed.

Latched - This selection will provide a latched 12v+ output that can be tied to any of the vehicles SWC. This means that when

you press the assigned SWC, the Red/White wire will turn on and remain on until the assigned SWC is pressed again or the

ignition is turned off.