Fabboi

First off, I had the Red change battery light come on so I replaced the AUX battery and "normalized" the system. My windows work perfectly however my AC, when I turn it on it does not heat up. The fan blows perfectly. I did a search and was wondering is this related to my Aux battery being changed or I need to change the heat change over valve many people have problems with?

Also when your engine is on at night, if you open your front door, does the rear dome light turn on? mine does not...

Fabboi

Really? not even 1 person?

willy_manilly

Mine wasn't working, so i checked the collant level and i found it was down a bit. Topped it right up and now it's working fine again.

Give that a shot and see how you go. If it still doesn't work it could be the valve that needs replacing.

vettdvr

When I had no heat it was the temp control valve mounted on pass side under hood at firewall. Do a search you will find al the procedures to change it,,I think it might even be in the sticky's at the beginning of the threads.

Barry45RPM

No, it goes on only when the rear door is opened. Overengineered?

Fabboi

Thanks, i never notice the rear light off until now, guess it not my battery fault. Also my time to deal with the temp valve has came

DAMN YOU W211 AND ALL YOUR RANDOM PROBLEMS!