TKoehler
Renault Captur preheating lamp and check engine light
Summary of the thread
A 2020 Renault Captur diesel exhibited issues with the preheating lamp not switching off and the check engine light illuminating, accompanied by noticeable smoke from the exhaust during acceleration. The problem was suspected to be related to a defective glow control unit or faulty cable or plug connections. After diagnosis by a mechanic, it was confirmed that the issue was due to a defective cable or plug connection in the glow control unit, which was subsequently repaired.
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4 comment(s)
TKoehler (community.author)
I have not experienced any difficulties starting the vehicle, even in colder conditions. Given that the starting is not affected, would you still suspect the glow plugs themselves, or is it more probable that the issue lies within the control unit or its associated wiring?
marvinice10
Okay, if starting isn't an issue, maybe the glow plugs are alright. Still, that control unit thing is a pain. If it was me, I'd take it to a workshop and have them run diagnostics. Better safe than sorry, you know? They'll pinpoint it quick.
TKoehler (community.author)
I appreciate the advice. I took the vehicle to a trusted mechanic, and after diagnosis, it was indeed determined that the cable or plug connection of the glow control unit was defective. The repair was completed for 95€.
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RENAULT
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CAPTUR
marvinice10
Hey, sounds familiar! I've got a Captur, and I had some similar weirdness going on a while back. Preheating light acting up, engine light popping on... Did you notice any trouble starting the car, especially when it's cold? Might be worth checking the glow plugs themselves too, just in case. Are you thinking it's the wiring harness to the glow plug controller?