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Tucson Hybrid electrical malfunctions

I'm having a weird issue with my 2022 Hyundai Tucson Hybrid. I'm getting an error message in the speedometer, plus there's an error stored in the memory. The engine feels weak when starting, almost like the battery is drained, and I'm noticing other electrical malfunctions. My mileage is at 183751 km. I'm guessing the auxiliary battery isn't charging properly? Anyone else experienced this?

A 2022 Hyundai Tucson Hybrid is experiencing electrical malfunctions, including error messages and a weak engine start, possibly due to a drained battery. The issue is suspected to be related to the auxiliary battery not charging properly. A similar problem was resolved by replacing the auxiliary battery, which was confirmed as the cause of voltage drops. The suggested solution is to have the vehicle checked at a workshop to address the battery issue.

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4 comment(s)

Sounds familiar! I have a Tucson too (though not a hybrid), and I had similar issues. Low voltage warnings popping up all over. Was it the auxiliary battery, or something else?

Auxiliary battery, huh? Was it a constant thing, or did it come and go? And did you notice any voltage drops?

Yeah, it was definitely the auxiliary battery causing the voltage drops. Started intermittent, then became constant. Honestly, I'd suggest getting it checked out at a workshop, as electrical gremlins can be a pain to diagnose.

Thanks! I took your advice and went to the shop. Turns out the auxiliary battery was indeed the culprit. Repair cost me 290€. Appreciate the help!

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HYUNDAI

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TUCSON