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luisa_mond1

Peugeot 107 start stop issue

Hi, I've got a 2012 Peugeot 107 diesel with 252467 km on the clock. My start-stop system isn't working. There's an error stored, and the engine sometimes shuts off unexpectedly, triggering a warning light in the speedometer. Could this be related to the car battery?

Summary of the thread

A 2012 Peugeot 107 diesel with a start-stop system issue was discussed, where the engine sometimes shut off unexpectedly, triggering a warning light. The problem was suspected to be related to the car battery, as start-stop systems are sensitive to battery voltage. It was suggested to test the battery, as a heavily discharged or defective battery could cause such issues. After taking the car to a workshop, it was confirmed that the battery was indeed the problem, and replacing it resolved the start-stop issue.

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4 comment(s)

siegfriedkoehler40

Sounds plausible. Start-stop systems are very sensitive to battery voltage. A heavily discharged or defective battery can definitely cause those issues. Has the car been struggling to start lately? Maybe get the battery tested?

luisa_mond1 (community.author)

The car starts normally, so I didn't suspect the battery. But what do you mean by 'heavily discharged'? Does that just mean it's old?

siegfriedkoehler40

Not necessarily just old. It could be that it's not holding its charge properly anymore, even if it can still start the engine. Modern cars draw power even when they're off. I'd still recommend getting it checked, because if it's not the battery, then the problem could be somewhere else in the start-stop system, and that is difficult to pinpoint. I’d go to the workshop.

luisa_mond1 (community.author)

Okay, thanks for the advice. I took it to a workshop, and you were right – the battery was the culprit. Cost me 290€ to replace, but the start-stop is now working again.

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PEUGEOT

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107