Air con demister off

[madaboutmymerc]

I have a C Class 250 Diesel the air conditioning, heating / de mister has stopped working I have checked the fuses but cannot find a blown one....any ideas??

 

[jberks]

Do you mean the fan no longer works or not even the aircon button lights up?

 

[madaboutmymerc]

Air con and fan speed buttons all show ligts but no fan??

 

[jberks]

Check the fan regulator. Fans generally go forever, but the regulators often give up. If you locate the reg (not sure where it is on the C), you can check the current from the switch (variable 0-7v ish) and the main power feed. If all ok going in and nothing coming out - you have your answer.