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achim_wilson1

Seat Altea Diesel Electrical Problems

I'm having a strange issue with my 2013 Seat Altea diesel. It has around 173668 km on the clock. I keep getting overvoltage errors and a ton of fault memory entries. Various systems are failing, and the car battery seems weak when starting. It generally feels like some kind of car electronics malfunction or a power surge is happening. I suspect the battery is heavily discharged or defective, but I'm not sure where to go from here. Any ideas?

Summary of the thread

A 2013 Seat Altea diesel is experiencing electrical problems, including overvoltage errors and multiple system failures, likely due to a weak or defective battery. The issue may stem from a heavily discharged battery or a power surge. Checking the battery voltage with a multimeter is recommended, and if the battery fails to hold a charge, replacement may be necessary. Replacing the faulty battery resolved the electrical issues.

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4 comment(s)

joachimthunder1

Sounds like a similar issue I had with my Altea. I remember seeing a bunch of weird errors on the dashboard. Did you check the car battery voltage? That's where I'd start.

achim_wilson1 (community.author)

Thanks for the quick reply! How did you check the voltage, and what was the next step you took after that?

joachimthunder1

Yep, same symptoms. I used a multimeter to check the voltage. It was way lower than it should have been. I tried charging the car battery, but it didn't hold the charge. In the end, I just took it to a workshop. They confirmed it was the car battery causing all the electrical issue.

achim_wilson1 (community.author)

It was a faulty car battery! Replacement cost 290€ and resolved all the electrical issues. Thanks for the help!

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SEAT

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ALTEA