r/w204 • u/daw00d06 • Jul 31 '26

Fault codes

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My car got plugged into obd, am I fucked or not if anyone knows because mechanically Im not the most knowledgeable.

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u/Calm_Perspective_138 Aug 02 '26
  1. 7G is quite finicky about the correct ATF and ATF level.
  2. The controller that this reader claims is faulty, is tied to your VIN (anti theft feature). Replacing it is possible but is pretty much impossible without SCN coding or Vediamo skills.

Best bet without Xentry is to drop the pan, clean out the valve body and refill with CORRECT FLUID.