victoriasilber7
Koleos AdBlue Issue Resolved
Summary of the thread
A 2019 Renault Koleos diesel engine displayed an AdBlue tank empty error, preventing the engine from starting. The suspected cause was a defective AdBlue output from the tank to the dosing unit. The issue was confirmed to be with the AdBlue tank/pump assembly, which was replaced, resolving the problem. The repair cost was accurately estimated at 250€.
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4 comment(s)
victoriasilber7 (community.author)
Weird smells? No, not really. Fuel consumption seems normal, at least until it refused to start altogether. You mentioned a faulty injection system on your BMW...was that related to the AdBlue system somehow, even though it was a gasoline engine?
guenterloewe1
Yes, absolutely! The root cause was the injection system! Even though it wasn't directly linked to AdBlue (since yours is diesel), the symptoms you described – service light, dashboard alerts, and eventual no-start situation – are eerily similar to what I experienced. Given your expertise and the cost you mentioned, I think you have a good handle on the situation. Consulting a workshop would be beneficial to confirm your diagnosis.
victoriasilber7 (community.author)
Appreciate the input. Confirmed: it was indeed the AdBlue tank/pump assembly. Replaced it, cleared the codes, and we're back in business. 250€ was spot on.
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RENAULT
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KOLEOS
guenterloewe1
That sounds incredibly frustrating! I had a similar issue with my BMW 3 series, although mine was petrol. The dashboard was flashing with service lights, all pointing to emission control issues. Could it be a faulty injection system? Did you notice any other symptoms besides the error message and the engine not starting, like changes in fuel consumption or weird smells?