Hello,
I am having a problem with the heating system on my A8. Basically, the cantre vents work perfectly, however, all other vents blow nothing but hot air, no matter what I request from teh system. I believe this may be cause by the heater control valves stuck open. I have checked that the fuse is fine.
Can anyone describe where these valves are and how easy they are to replace. Alternatively I am open to any suggestion of how to fix this and would like to hear from anyone who has had the same problem.
Thanks for your help.
Stephen