Hi all, I'm new to this forum, I am having some problems with my girlfriends C180. The Radiator warning light has started to come on recently and the fans blow hot air into the cabin even when set to cold. The coolant/antifreeze mixture is about right, I had it tested a few weeks ago. I thought I'd fixed the hot air problem by telling the missus to actually turn the fans on to blow cold air into the cabin but it has since come back, not sure why.

Any ideas / suggestions / questions are welcome.

Many thanks in advance for assistance.

John