PAC RadioPro 4 Radio Replacement Interface w /  SWC Retention
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PAC RadioPro 4 Radio Replacement Interface w / SWC Retention

RP4.2-BM21

An all in one radio replacement and SWC interface, the innovative new 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
Compatibility Notes
  • 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).


  • Brand : PAC
  • Make Compatibility : BMW
  • Product Type : Radio Replacement Interfaces
  • Item Rank Result : 3