2008 Mercedes-Benz C300 U0101 Fault: No Gear Shift, Lost Communication with Transmission Control Module
My 2008 Mercedes-Benz C300 is not shifting into any gears. The odometer display shows no errors, and the engine runs normally. When I tried to start the car this morning, it remained in neutral and would not move. A diagnostic check revealed fault code U0101, indicating lost communication with the Transmission Control Module (TCM). The vehicle is otherwise functioning properly except for the shifting issue. What are the most cost-effective troubleshooting steps to resolve this without spending a large amount on repairs? Any advice or solutions would be greatly appreciated.
Good evening. I'm also experiencing U0101 code on my 2010 Mercedes-Benz C200. The fault appears related to an electrical issue with the sensor at position U0335. I've already replaced all relevant sensors, but the problem persists and the fuel injection warning light comes on immediately. This suggests a deeper wiring or module issue rather than a simple sensor failure.