willisturm27

Hyundai i10 Overvoltage Issue

I'm seeking help with my 2009 Hyundai i10 diesel. I'm experiencing an overvoltage issue. The car has 52302 km on it. Symptoms include fault memory entries related to overvoltage, failure of systems, a weak battery when starting, and electrical malfunctions. Could a discharged or defective battery cause this?

A 2009 Hyundai i10 diesel is experiencing an overvoltage issue, with symptoms like fault memory entries, system failures, weak battery starts, and electrical malfunctions. The problem could stem from a discharged or defective battery, a faulty alternator voltage regulator, or poor ground connections. The suggested solution is to check the alternator output and main ground connections, but ultimately, a workshop visit is recommended for accurate diagnosis and repair. The issue was resolved by replacing the defective battery.

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4 comment(s)

Interesting. I own an i10 myself. Did you check the alternator output? If the voltage regulator is faulty, it could be causing the overvoltage. Also, check the main ground connections, as a poor ground can cause erratic electrical behavior. Has any work been done recently on the car's electrical system?

Thanks for the insights. How would I check the alternator output accurately? I'm not experienced with automotive electrics. And are there specific ground locations I should check first?

While you can use a multimeter to check the alternator output, it's often best left to a professional. For ground points, check the main cable from the battery to the chassis and engine block. A loose or corroded connection there can cause issues. Given your symptoms, I'd recommend a workshop visit to diagnose the cause. It may save you time.

I took the i10 to a workshop. The battery was heavily discharged and defective, leading to the overvoltage. The repair, including a new battery, cost 290€.

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HYUNDAI

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I10