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W205.45 Air Suspension

Old Feb 17, 2025 | 08:35 PM
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Exclamation W205.45 Air Suspension

Hi,
I have a W205.45 2016 that has an airmatic fault, the airmatic control module (N51) has lost its configuration and as a result not controlling the car, when reviewing the variant parameters all 20 address lines are blank and the CRC is displaying 0x00 0x00 0x00 0x00
I have tried various options from the 20 addresses drop downs and when attempting to write the code it displays an error. I am using an launch elite via the OBD which I think might have wiped the coding !! not sure.

Other info from the car coding data
Variante_ADS ADSPlus_W205_AMG_4x2
Version level control NR_BR205_AMG

DTC P164456 - An incorrect variant coding or configuration was detected

I have came to two possible outcomes
1. I identify the correct 20 addresses to enter and it will re-configure - I need help if this is a valid option
or
2. I need to go to a mercedes dealer with an official XENTRY system and re install the correct coding, parameters addresses and SCN etc

Any advice will be most welcome

Regards,
Iain








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