SL - Air Con/HRW fault

[Ronnie]

I have a fault with both the aircon and heated rear window on a 2005 350SL.
The indicator lights come on, flash a couple of times and then go out...
Anyone with any idea what the likely causation is ?
I know this happens sometimes when the battery is low and certain functions are unavailable, but even with a fully charged battery the problem persists.
Would appreciate any advices...

 

[lordlee]

I have the same aircon issue and have been informed that you need to have it plugged in to STAR to get a proper diagnosis.

 

[Ronnie]

Who advised you on it ?Also, Do u have the same problem with the HRW ?