dominik_moeller43
C Klasse Automatic Transmission Issue
Summary of the thread
A 2021 Mercedes C Klasse is experiencing issues with the automatic transmission's parking position, leading to engine start failure, a check engine light, and gearbox slippage. Diagnostics suggest a defective control unit as the cause. A similar experience was shared, indicating that the problem might require professional repair, likely involving the transmission control unit.
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4 comment(s)
dominik_moeller43 (community.author)
The error code directly implicates the automatic transmission control unit. The symptoms you describe align with my current predicament. Do you recall the specific error code you encountered and the resolution to your transmission issues? Any details would be appreciated, especially concerning the transmission sensor.
friedhelmjung1
Right, I can't recall the exact error code now, but it definitely pointed towards the transmission. I tried looking into the transmission sensor myself, but honestly, it got complex fast. Ended up taking it to a workshop. They confirmed it was some kind of control unit issue. Honestly, based on what you're saying, it sounds like you're heading to the workshop anyway.
dominik_moeller43 (community.author)
I appreciate the confirmation and your shared experience. Based on your advice, I will proceed with a professional assessment and subsequent repair. Thank you for your assistance in clarifying the potential scope of this automatic transmission failure.
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MERCEDES
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CKLASSE
friedhelmjung1
Whoa, that sounds rough. I had something similar happen with my C Klasse. Automatic transmission went bonkers. Engine light, weird shifting, the whole nine yards. Was the error code related to the transmission at all? I'm just wondering if it's the same thing. My gut tells me it's not a simple fix.