C8 start stop malfunction

Hi, I'm having a weird issue with my 2014 Citroen C8 diesel. The start-stop system isn't working. I get an error stored in the memory, the engine shuts off randomly, and a warning light pops up on the speedometer. Anyone else experienced this? I suspect a battery issue, but I'm not sure where to start. The car only has 33822 km on it.

4 comment(s)

I had a similar issue with my C8. Is the automatic restart also failing? It sounds like the car battery might be heavily discharged or defective. This is a common issue with these cars, especially if they aren't driven regularly.

Yes, the automatic restart is failing too. It tries to restart, but then stalls. Did you manage to fix it yourself, or did you take it to a workshop?

Given the automatic restart failure and the stored error, I'd recommend taking it to a workshop. It does sound like a battery issue, but a proper diagnostic check is needed to confirm. It could be more than just a simple battery replacement.

Thanks for the advice! I took it to a workshop, and you were right - it was a defective battery causing the start-stop malfunction. A new battery and diagnostic check cost me 290€. Problem solved!

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