RadioPRO4 Radio Replacement Interface with Built-in Pre-Programmed Steering Wheel Control Retention and Navigation Outputs

$249.00 RP4.2-BM21

  • Incompatible with vehicles equipped with the upper display screen (above radio) (CCC or CIC systems). This screen is not retained if the radio is removed, and the owner will lose the ability to adjust some vehicle settings. Radio replacement is not recommended for those applications.
  • Does not retain amplifiers equipped with a Fiber-Optic input
  • 1 Series equipped with navigation is not compatible
  • 2006 3 Series coupe is not compatible
  • Due to lack of a true 12 volt battery lead at the radio opening, it is necessary to run a wire (wire is included) to the battery (located in the trunk).


RadioPRO4 Radio Replacement Interface with Built-in Pre-Programmed Steering Wheel Control Retention and Navigation Outputs


  1. If this is the first time using the RadioPRO PC Application, download the Radio PRO PC Application. This can be found at the "Download" tab at the very bottom of the firmware list on this page.
  2. Download the firmware file.
  3. Install the Radio PRO PC Application using the .exe file you downloaded in step one.
  4. Open the RadioPRO PC Application using the new shortcut created on your desktop.
  5. Connect the interface to the computer using a standard to micro USB cable.
  6. Click the "Firmware" icon.
  7. Click “Select File” and browse to the new firmware file. The new firmware can be found where you saved it before beginning.
  8. Once the file is chosen the update will begin. When successful it will show the text "Update Completed".
  • Firmware Download, Version 01.00.05 (Released on June 7th, 2016)
    Release Notes
    • Fixed chimes
    • Fixed VSS in 2015 cars
    • Added front park assist retention
  • Firmware Download, Version 01.00.03 (Released on August 5th, 2015)
    Release Notes
    • Initial Release
  • Utility/Other, Version V19 (Released on February 22nd, 2020)
    Release Notes
    RadioPRO PC Application

An all-in-one radio replacement and SWC interface, the innovative RadioPRO4 comes pre-loaded with amplifier retention and SWC software, navigation-based output signals, and other features that save time and money during installation. 

  • Retains OEM steering wheel control functions (pre-programmed)
  • Data controlled 10 amp accessory output
  • Removes SOS error light from cluster after factory radio is removed
  • Data controlled outputs for connecting an aftermarket navigation radio
  • Single programmable 12V output
  • Easily configurable using a PC application
  • Highly visible tricolor LEDs to keep the user informed of the module’s status
  • Retains factory amplifier (Non-Fiber Optic)
  • Retains i-Drive control. Operates some features of the aftermarket radio (tuning, etc.)
  • Retains warning chimes (including rear park assist and front collision detection)
  • Direct USB updatable. PAC-UP NOT Required

Patent # 8,014,540 & 8,184,825

RP4.2-BM21 Instruction Manual
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