I have a 1995 e320 sedan. The cabin air does not work. I have no heater no fresh air vent no a.c. Everthing was fine and one day it stopped working. How do I troubleshoot this problem? and where are the components located.

thanks in advance

First check is fuse link.
It is outside the fuse box , on the left ..check both sides for power w/test light , as a fine crack is sometimes not visible

If the seat motor works, it's not a fuse...they're on the same circuit.

Blower is Aux Fuse holder F-15 on 124.032 chassis. Circuit 15X, 30 Amp, screw mount fusible link fuse. Power feed for N-29 blower regulator circuit.
http://mb.braingears.com/124_DISC1/Program/ETM/24832001.pdf
Schematic location is 34M.

Seperate circuit..Nothing to do with seats...

thanks guys it was the fuse link $2.08 from the dealer. It is located in front of the fuse box has a black plastic cover over it.

Great job

..another happy forum visitor.

Seperate circuit..Nothing to do with seats...[/QUOTE]


Weird..when mine died the fuselink was fine but the seat fuse was replaced and it came back on...and the manual's fuse schematic says that seat fuse operates the blower as well....oh well.

I can see where you got that from. That fuse is on the controp panel side of blower circuitry.
The actual Load feed for fan is the F15 aux Fuse, which is why the 30 Amp requirement.
This is always first check due to the high failure rate and very common fault.................