Mpassion

Hello,

I have replaced the blower motor (meyle) and Regulator (behr) yet have no air at all.

1. console says error diog which I presume is ok.
2. console bar 6v as air raises appears functional
3. where can I service my benz DC/VA/MD?

A blown fuse or defective new regulator, or over head temperature sensor malfunction?

Btw I was well pleased how simple the blower motor replacement was as instructed here.

Any guidance is greatly appreciated.

wallyp

Check the blower fuse - on my 2003 S430, it is Fuse #33, the 40-Amp fuse at the front of the right box under the hood. (Remember, left/right are always from the viewpoint of the seated driver.)

Mpassion

Thanks Wally, I will have a look.

Yesterday it was 80 outside and the A/C blew cold and operations were normal. I guess that means the fuse is good? Today, nothing no air.

per instructions

W220 Automatic Climate Control Service Menu Version 4.pdf

Parameter NR.01: (In Car Temperature Sensor (N70b1), Overhead Control Panel (OCP) (N70) reads "0". I guess this is the sensor by sunroof-dome lights?

Would replacing overhead sensor solve issue at hand?

Mpassion

Wally,

the first 40 amp fuse was broken on bottom half. The fuse doesn't resemble any of the fuses I overlooked it.

Lesson learned don't change regulators or blowers until you verify all fuses.

Cold A/C is lovely in the summer.

thanks