Keys used in Audi A6, S6, RS6, Allroad ( 4F ) 2004-2010 models.
The manufacturer specifies 4F0837220, 4F0837220R, 4F0837220G and other 4F0837220xx parts number.
Operating frequency : Keys for the US market generally working on 315MHz, Europe and rest of world : 868MHz.
Key with MCU - remote and transponder integrated ( ID Sokymat Crypto 8E ).
AUDI A6 - 4F0837220R PCB L
AUDI A6 - 4F0837220R PCB R