i have a 91 300e, just bought it a couple of weeks ago and there is no response to any of the heating controls, the airconditioning compressor does not engage ,,,any ideas.....

Does hot air come out all the time?

Replace the fuses. Do not just look at them and think they are OK. next would be the OVP relay.

__________________
"I have no convictions ... I blow with the wind, and the prevailing wind happens to be from Vichy"

Current
Monika '74 450 SL
BrownHilda '79 280SL
FoxyCleopatra '99 Chevy Suburban
Scarlett 2014 Jeep Cherokee
Krystal 2004 Volvo S60
Gone
'74 Jeep CJ5
'97 Jeep ZJ Laredo
Rudolf ‘86 300SDL
Bruno '81 300SD
Fritzi '84 BMW
'92 Subaru
'96 Impala SS
'71 Buick GS conv
'67 GTO conv
'63 Corvair conv
'57 Nomad

i replaced the #7 fuse but that made no difference...if i press the defrost button, there is hot air coming from the defrost ducts as long as the car is in motion...i should also mention that the 2 electric fans in the front are also not working, i unplugged them and ran a jumper down to them and they worked fine, so i know it is not the motors...

to Tech Help