lukaseagle26

Skoda Yeti electrical issues

I'm writing to describe an issue I am experiencing with my 2010 Skoda Yeti featuring a gasoline engine. The vehicle currently has 77092 km on the odometer. I have encountered a perplexing problem related to overvoltage. The symptoms include numerous fault memory entries indicating overvoltage, the failure of various systems within the vehicle, a weak battery during engine starts, and general electrical malfunctions. My initial suspicion points towards a heavily discharged or defective battery as the likely cause. I am aware that alternator failure can also lead to overvoltage situations, potentially damaging sensitive electronic components due to a power surge if the voltage regulator malfunctions or if there's inadequate circuit protection. I would appreciate any insights or suggestions regarding potential diagnostic steps or troubleshooting procedures to resolve this issue effectively.

4 comment(s)

That sounds like a nightmare! I had a similar experience with my old Vauxhall Astra. It wasn't exactly overvoltage, but I had weird electrical issues and random system failures. What exactly do you mean by overvoltage? How did you determine that was the problem?

When you say 'voltage regulator' are you referring to the alternator's voltage regulator, or is there another component I should be checking? And what do you mean by a power surge? I thought circuit protection was supposed to prevent that sort of thing. Thanks for the help!

Yes, I meant the voltage regulator inside the alternator. If that fails, it can send too much voltage through the system – that's the power surge I was talking about. The circuit protection is supposed to help, but sometimes it's not enough. Honestly, with all those symptoms, it's probably best to get it checked out by a professional. They can properly test the alternator and battery.

The workshop confirmed a defective battery was causing the overvoltage. It was heavily discharged, which I didn't realize could cause such a cascade of problems. A new battery was installed, the fault memory cleared, and everything seems to be running smoothly. Total cost was 290€. Thanks for the input; it pointed me in the right direction!

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