Twingo diesel generator failure

Hi, I've got a 2014 Renault Twingo diesel with 215304 km on the clock, and I think the generator is failing. I'm experiencing reduced engine power, the battery warning light is on, and it's starting poorly. Also, the lights are flickering. I scanned it and there's an error code related to low voltage. Could a defective generator cause all these issues?

4 comment(s)

Sounds like a generator problem to me. A failing generator can cause a voltage drop, which explains the warning light and starting issues. Weak lights are another classic symptom. Does the engine misfire sometimes?

Yes, actually, I have noticed occasional engine misfires, especially when the electrical load is high, like when the headlights and heater are on. Would that be related to the generator as well? Is there a simple way to test the generator output before I replace it?

Yep, misfires can definitely be related to a faulty generator. Given all the symptoms you're describing, and the misfires under load, I'd say the generator is highly suspect. You could try testing the voltage with a multimeter, but honestly, with those kms, it's probably worn out. Best get it checked at a workshop to confirm.

Thanks for the advice! I took it to a workshop, and you were right – the generator was defective. They replaced it, and it cost 960€. Everything is working fine now. The new generator fixed all the problems: the warning light is off, the engine runs smoothly, and the lights are bright again.

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