A4 heater, only blowing cool air
Discussion
I have a 2005 A4 Avant B7 and only blows cool/tepid air when on high setting, this started today.
Could it be an air lock as it's just had a new cylinder head a couple of weeks ago, if it is how do you get rid of an air lock ?.
Or could it be something else, your thoughts would be appreciated.
Could it be an air lock as it's just had a new cylinder head a couple of weeks ago, if it is how do you get rid of an air lock ?.
Or could it be something else, your thoughts would be appreciated.
Rich_W said:
Could be but unlikely, check the coolant level, air locks tend to eventually end up in the tank. If the levels way down then possible. Or it could be a coolant leak
More likely though to be a flap motor not moving and closing off the cool air to allow the hot air into the cabin. 1/2 hour diagnostics at a place will tell them which one. Depends on which one as to how much the labour is to fit it and reset the basic settings.
All the vents are blowing cool air, what would cause all the flap motors to fail, a fuse or could the heater matrix be blocked ?.More likely though to be a flap motor not moving and closing off the cool air to allow the hot air into the cabin. 1/2 hour diagnostics at a place will tell them which one. Depends on which one as to how much the labour is to fit it and reset the basic settings.
Edited by flatsix3.6 on Sunday 9th February 14:25
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