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Peugeot 407 battery drain

My 2007 Peugeot 407 (gasoline engine) is giving me grief. The battery keeps draining, like completely dead. I'm getting a weird error message on the speedometer, the lights are dim and flickering, and the car throws an error code. Plus, the battery is super weak when I try to start it. My car has 267554 km. Any ideas?

A 2007 Peugeot 407 is experiencing battery drain issues, with symptoms including a dead battery, dim and flickering lights, and error messages. A potential cause identified is a faulty battery sensor, which can lead to various electrical problems. The suggested solution is to inspect the battery sensor, particularly its connection to the negative terminal, and consider professional repair if necessary.

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4 comment(s)

Sounds familiar! I had a similar problem with my 407. Check your battery sensor. Are your battery terminals clean and tight?

Battery sensor? Where is that located, and how do I check it? Terminals look okay to me, but I'm no expert.

It's usually connected to the negative terminal of the battery. Honestly, my issue was a faulty sensor and it caused all sorts of electrical gremlins. Eventually had to take it to a workshop to get it sorted properly.

Thanks a lot! I'll check the sensor, but it sounds like a workshop visit is in order. My local mechanic confirmed that the battery sensor was defective and I had to pay 315€ for the repair. You were spot on!

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PEUGEOT

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407