Seat Ateca Diesel Low Car Heating Output

Hey, thanks for posting! I had a similar heating problem with my old Renault Megane, though it's a petrol engine. My car heating was barely working, and it turned out to be a valve blockage somewhere in the engine coolant system. Is your engine coolant level okay? Maybe there is a coolant leak that is messing with the car heating.

Thanks for the quick reply! I checked the engine coolant level, and it seems fine, no coolant leak that I can see. Where exactly was the valve blockage in your Megane? Was it easy to spot?

Yeah, my mechanic found it. Honestly, I couldn't tell you exactly where it was – something to do with the heater core. It wasn't easy to spot, and I wouldn't recommend messing with it yourself unless you really know what you're doing. You could end up causing a coolant leak or something worse. Honestly, if you have an error code pointing to the water valve, and you're already seeing heating issues, I'd suggest getting it checked by a workshop. They'll be able to diagnose it properly and tell you if it's just a bad connection or if the valve itself needs replacing.

Okay, thanks. I took it to the shop and it was the water valve, like the error code said. They replaced it, and the car heating is working again. Total cost was 95€, which isn't too bad. Apparently the cable or plug connection was defective, as suspected. Glad that's sorted.