Problem solved. I've put a revised eberspacherunit on the car and it's ok now.
I also found the sensor next to the wipers motor (just dismantle a big horizontal plate to reach it)...sensor was ok.
pete, January 2010
The switch should be close the the wiperm motor but I think you need to dismantle a lot of stuff to be able to reach it.
So your car (alhambra?) stays also cold when driving 50 - 70 km/h when it's freezing outside then?
When driving 120 km/h for a while the temperature goes up to 90°. But when standing still with running engine the temp is dropping fast again. You have this also?
pete, January 2010
join www.fgoc.co.uk and save some money.This is the galaxy owners club site and they have lots of info on how to ment rear heaters
steve, January 2010
There is no switch i think, it starts using the tempprobe at 5 degrees or less. Mine starts but stops after 2 minutus, a cold freezing car is the result. replacement will cost me 620 euro !!!!!!
Johan DG, January 2010
edit
I can answer this question...
5°C temp switch for the additional heater in seat alhambra 1.9tdi?