peter_dunkel1
Mini Cooper Diesel Low Heating Output
Summary of the thread
The 2009 Mini Cooper Diesel had low heating output, with an error memory indicating a defective water valve. The issue was suspected to be related to the cable or plug connection of the component. A blockage in the valve was considered a plausible cause. The solution involved replacing the defective water valve, which resolved the heating issue.
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4 comment(s)
peter_dunkel1 (community.author)
Engine temperature remained normal. What type of valve was defective in your Golf? Was it related to the car heating system specifically?
christopherdavis4
Yes, in the Golf it was the valve that regulates coolant flow to the car heating core – basically a smaller radiator inside the dash that provides heat. I didn't notice engine overheating, but the car heating was barely working. Given your symptoms and the stored error, a valve blockage is definitely plausible. I'd suggest a workshop visit to confirm. It's usually a straightforward fix.
peter_dunkel1 (community.author)
Identified defective water valve in my Mini Cooper Diesel. Cable/plug connection was the likely culprit. Replaced the valve; car heating now functional. Total cost 95€. Thanks for the input.
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MINI
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COOPER
christopherdavis4
Sounds familiar! I had a similar car heating issue with my old VW Golf. Turns out it was also a faulty automotive valve. Was your engine overheating at all?