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felixneumann32

GLC ABS Fault Lateral Acceleration Sensor

Evening I have a problem with my Mercedes GLC, 2023 model with a Gasoline engine. The ABS light is on, and the ABS system seems to be failing. I ran a quick diagnostic scan and it's showing a fault with the lateral acceleration sensor. Seems to be storing an error. Anyone experienced this before?

Summary of the thread

A 2023 Mercedes GLC owner reported an ABS system failure, with a diagnostic scan indicating a fault in the lateral acceleration sensor. The issue was similar to a past experience with a BMW, where a faulty electronic control unit affected sensor readings. The suggested solution was to have a workshop perform detailed diagnostics, which confirmed a defective control unit, leading to its replacement.

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4 comment(s)

greta_walter86

Sounds familiar! I had a similar issue with my old BMW 3 series, although it was a different sensor. The ABS light kept popping up, and the car felt a bit unstable during cornering. The diagnostic scan also pointed to a sensor fault. Did your scan give you any specific codes? Have you checked the steering angle or yaw rate readings? Mine ended up being an issue with the electronic control unit, which affected the sensor readings. It triggered a safety warning too.

felixneumann32 (community.author)

Thanks for the reply! No specific code, just a general lateral acceleration sensor fault. How did you figure out it was the control unit and not just the sensor itself in your BMW?

greta_walter86

Well, I initially thought it was just the sensor, but after replacing it the problem came back after a day. The mechanic then did some more detailed diagnostics and found the electronic control unit wasn't sending the correct signals to the sensor. It was a pain to diagnose. Honestly, I think you should probably take it to a workshop. They'll be able to check the steering angle, yaw rate, and all those other fun things with proper diagnostic tools. It might save you a lot of time and money in the long run.

felixneumann32 (community.author)

Thanks for the advice. I took it to the workshop as you suggested. Turns out you were right, the affected control unit was defective. Cost me about 1000€ to repair. Appreciate the help!

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MERCEDES

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GLC