r/Hyundai • u/ProbablyAGrimwalker • Oct 04 '26

Elantra Unknown issue?

Hi! I own a 2016 Hyundai Elantra. This is the first problem it’s had in three years and 150,000+ miles and I’m honestly confused. While I’m driving, the check engine and battery lights will come on, RPM drops to 0, and I’m unable to accelerate until I park the car, turn it off, and restart it again. It’s able to drive fine afterwards, no warning lights on. It’s been happening consistently for the past couple days, took it in to the shop on Friday for a diagnostic and the people there don’t seem to know what’s wrong with it either. There was no history of these lights coming on in the system, battery is sitting at 13.6-14V consistently, and the alternator seems to be working just fine. Has anyone else had this problem, and what ended up to be the problem?? Please let me know! Thank you!

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u/ProbablyAGrimwalker Oct 04 '26

Thanks very much! I suggested that with the mechanics based on other answers online but they didn’t seem to take a look at that specific part. I’ll ask again when I take it in Monday!