I was working on a separate problem on the Avant yesterday, had the engine running whilst I worked in the boot.
After about 30 mins I noticed smoke/steam coming out from under the bonnet.
When I opened it up I could see the coolant tank was bubbling over so I turned it off to investigate.
It turns out that the fans weren't running at all, hence the overheat where not moving.
I checked the temp gauge and never went over 90 but foes drop when it cools down.
The fan does work when I turn the aircon on?
What do you think is broken?