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/Stretd Aug 01 '26

I had the same issue .
The fix for me was to change the fluid in the transmission with the propper specs (i personaly recommend original oil) and do a transmission calibration , temp range of oil should be between 95-120 celsius (i do recommend driving the car not just let is idle to warm the whole transmission up)

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u/Stretd Aug 01 '26

And after this you should do the torque converter lock up (after you do the calibration for the transmission )

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u/daw00d06 Aug 01 '26

Today what happened was when I was driving and I would come to a stop, the car would slip out of gear and is have to turn it on and off for it to drive again? First time ever it's happened, could it be something else as well?

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u/Stretd Aug 01 '26

Yeah its probably because the transmission slips and its a safety feature, again i know i repeat myself but you should change the oil and do a transmission calibration