Skoda Roomster Overheating Issue

Sounds like a classic active air flap issue. I had a similar problem with my Vauxhall Insignia. Engine was overheating, and the check engine light was on. Did you run a diagnostic scan to pull the fault code? That would definitely pinpoint the electromechanism. Thermal management systems can be tricky these days, can't they?

A diagnostic scan, you say? What kind of fault code am I looking for? And how difficult is it to replace the flap motor?

The fault code will likely refer to the active air flap or flap motor circuit. Replacing the flap motor itself isn't massively difficult if you are mechanically inclined, but accessing it can be a pain depending on where it's located. Honestly, given the potential for messing up the thermal management system and with the overheating, you are better off taking it to a workshop and having them confirm the diagnosis with a diagnostic scan and replace the motor. Is it really worth risking further damage?

Thanks for the advice. I took it to a local mechanic, and you were spot on! The diagnostic scan confirmed a faulty flap motor. They replaced it, and the check engine light is now off. It set me back 590€, but at least it's sorted.