Audi 4F0 Keys description

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Audi A6, Q7 key. 4F0837220R, 4F0837220G, 4F0837220M, 4F0837220T, 4F0837220AK

Audi 4F0 key, used for Audi A6 4F and first generation of Audi Q7.

Generally, the manufacturer specifies 4F0837220xx part numbers.

Supported models:

☛ Audi A6/S6/RS4/Allroad about 2004-2010.

☛ First generation of Audi Q7 about 2006-2015.

Audi 4F0 keys are with Comfort Access (Keyless/Kessy) and without Comfort Access version. Keys with Keyless support can be recognized by an additional LF-Coil at PCB of the key or by PN. The list with Audi models and PN of keys can find at the end of this page.

Operating frequency: 315MHz, 433MHz or 868MHz (depending of the country). Keyless LF Wake-up frequency: 21kHz.

Transponder type: Sokymat Crypto 8E (MCU).

PCB of 4F0 KEY
WITHOUT KEYLESS SUPPORT
4F0837220R, 4F0837220N and others

AUDI A6, Q7 KEY: PCB 4F0-837-220, 4F0-837-220-AK, 4F0-837-220-AG, 4F0-837-220-R, 4F0-837-220-N

AUDI A6, Q7 KEYS: PCB 4F0837220, 4F0837220AK, 4F0837220AG, 4F0837220R, 4F0837220N

RENEW (VIRGINIZE) USED AUDI 4F0837220xx KEYS

Renew Audi 4F0 used keys is possible with using many tools, but for unlock this key, required eeprom file read from original EZS-Kessy. Some tools (e.g. VVDI2, AVDI) can read eeprom from EZS Kessy via OBD2 and unlock the key with the read file. This method is relatively simple to use and does not require disassemble the key.

However, if you have the key only, without original EZS-Kessy or eeprom file from it, the matter is more complicated and there is no simple method to unlock these keys.