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Mercedes GLC problems again and again the starter does not work
Longer cold start time
Car won't start
Weak battery when starting the engine
Dim or flickering lights
Weird engine noise
Warning light in the speedometer of the vehicle
(Translated from German)
4 comment(s)
Hey, my GLC has 187654 km on the clock. Last inspection was about 3 months ago. And yes, the error code that came up was "P062B". I'm really wondering whether I should go straight to the garage or whether it might be something simple that I can fix myself. Thank you for your input! Best regards!
(Translated from German)
Best Answer
Hey, thanks for the info! Your mileage and the error code "P062B" can tell us a bit more. P062B is a problem with the engine control unit, or more precisely an internal control module - there can be a number of things behind it. Since your problem is quite diverse (cold start, strange noises, weak battery, etc.), it sounds very much like an electrical problem. In my case, it was a faulty relay in the control unit and some corroded contacts that were interfering with the electrical signals. The garage fixed it and my baby has been running smoothly ever since! Your symptoms could also indicate a problem with the voltage rectifier or alternator - especially if the lights and battery are affected. Before you take action yourself, a thorough check at a garage might be the best idea to prevent more serious damage. However, if you feel confident enough to take a look yourself, you could check the battery contacts for corrosion or check whether all the fuses are intact. Sometimes there are small things that you can fix yourself, but I would be careful with "P062B" and call in a professional. Good luck and let us know how it goes! Best regards!
(Translated from German)
Hey, thanks for your detailed tip! I'll definitely check the battery contacts and fuses. If I can't find anything or can't get any further, I'll go to the garage to have them take a closer look, just to be on the safe side. Sounds like a more complex problem. I'll definitely get back to you with an update when I know more! Best regards!
(Translated from German)
Let our mechanics help you!
Hey, I know the problem well. Had something similar with my 2018 Mercedes C-Class diesel. I have some experience with cars, would classify my experience as mid-level. My car had similar symptoms: longer start times in cold weather, occasional engine not starting, weird noises, low battery and flickering lights. I was also totally annoyed. I then went to the garage and the diagnosis was that the fault was the result of a secondary fault in the vehicle's electrics. Fortunately, I didn't have to pay anything, so 0.0 euros. I was really relieved! To help you further, could you share more information about your vehicle? Things like mileage, recent servicing or specific fault codes would be super helpful! Best regards!
(Translated from German)