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RadioPRO RP4.2-BM21: BMW Radio Replacement and Steering Wheel Control Interface

Introduction

The PAC RadioPRO RP4.2-BM21 is designed to facilitate the replacement of factory radios in select BMW vehicles equipped with CAN-Bus systems. This interface ensures the retention of crucial factory features, including steering wheel controls, warning chimes, and retained accessory power (RAP). It also provides data bus outputs for accessory power, vehicle speed signal (VSS), illumination, reverse, and parking brake.

Key Features

  • Retains Steering Wheel Controls (SWC)
  • Retains Warning Chimes
  • Supports Dual Command Functionality for SWC buttons (short press/long press)
  • Provides Data Bus Outputs: Accessory Power, VSS, Illumination, Reverse, Parking Brake
  • Programmable 12V output via the RadioPRO App
  • Compatible with select CAN-Bus BMW vehicles

Installation and Programming

The RP4.2-BM21 requires specific wiring connections and dipswitch settings tailored to the vehicle and aftermarket radio. Detailed wiring charts and installation steps are provided within the documentation. The interface also offers advanced programming options through the RadioPRO App, allowing users to customize SWC functions, adjust chime volume, and manage other vehicle-specific features. For detailed instructions and compatibility information, please visit PAC Audio.

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