Features:

• Simplifies installation of the Maestro ADS-MRR or ADS-MRR2 Car Radio Replacement Interface module in select Audi vehicles when replacing factory radio with an iDatalink Serial Port compatible car stereo.
• Includes connectors that plug in between the Maestro module, factory radio's wiring plugs, and the serial port on the new car stereo.
• Features an in-line head-unit connector harness for compatibility with iDatalink's "Head-unit direct" harnesses for select radio brands.
• Allows retention of factory features including Audi's multi-function display, steering wheel controls, and use of the factory amplifier with balance and fade control.
• Enables additional features with select iDatalink-compatible radios, such as displaying gauges and vehicle info on the receiver's screen, and reading/resetting engine codes.
• Installation note: The HRN-RR-AU1 adapter must be used with the iDatalink Maestro ADS-MRR or ADS-MRR2 module to connect a new car stereo to the vehicle.

Audi Vehicle Application:

• A3 (All Radio Trims): 2006 - 2013
• A4 (All Radio Trims): 2002 - 2008
• A6 (All Radio Trims): 2004
• Allroad (All Radio Trims): 2004 - 2005
• R8 (Does Not Retain OEM Amplifier): 2007 - 2015
• RS4 (All Radio Trims): 2007 - 2008
• S4 (All Radio Trims): 2002 - 2008
• TT (All Radio Trims): 2002 - 2015
• TT-RS (All Radio Trims): 2012 - 2014
• TT-S (All Radio Trims): 2009 - 2015