dennisraven9

Peugeot 307 battery draining

I'm having a weird issue with my 2008 Peugeot 307 (gasoline engine). The battery keeps draining like crazy. I'm getting error messages on the speedometer, the lights are weak and flickering, and the error memory is full of battery-related codes. Starting is a struggle; feels like the battery is almost dead. I've checked the battery terminals and they seem fine. I suspect it could be a defective battery sensor. Anyone else experienced this?

4 comment(s)

I had something similar happen with my Peugeot 307. Is the car battery old? Have you load tested the vehicle battery or checked for parasitic battery drain, that would be my first guess. If you had battery drain, it might also indicate a problem with battery charging. Just thinking aloud...

The battery is relatively new, only about a year old. How did you figure out what was causing the battery drain in your 307?

Well, in my case, I ended up taking it to a workshop. It turned out it was a faulty sensor that was constantly drawing power, even when the car was off. It cost me around 315€ in the end, but it fixed the problem.

Thanks for the info! I think I'll take mine to a workshop as well. Your experience confirms my suspicions. Knowing the eventual repair cost helps too; appreciate you sharing your similar experience!

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