Fuse #20 blows every time I start A/C and car don`t start
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Newbie
Joined: Jun 2015
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1997 S420
Fuse #20 blows every time I start A/C and car don`t start
Fuse #20 located in fuse panel located in the engine compartment near the brake fluid resevoir blows as soon as I start A/C in my 1997 S420. Some further information and a few problems that may or may not be related on my 1997 S420 are as follows:
1. Fuse #20 blows every time I start A/C of the car. The things listed against that fuse are Control Unit, A/C Compressor, Automatic climate control. I turned off the A/C and then replaced fuse #20 and re-started the car not working after going to workshop and reprogram the car it started and again turning on A/C the fuse blows and the car not started till reprogram and also the center lock of remote is not working after this happen but it working from button inside the car.
2. I went to many workshops no one know the reason every one saying may be wire expose problem but no one can find which wire.
3. The A/C fan is currently off for starting the car. I don't understand the issue with fuse #20 which keeps blowing.
1. Fuse #20 blows every time I start A/C of the car. The things listed against that fuse are Control Unit, A/C Compressor, Automatic climate control. I turned off the A/C and then replaced fuse #20 and re-started the car not working after going to workshop and reprogram the car it started and again turning on A/C the fuse blows and the car not started till reprogram and also the center lock of remote is not working after this happen but it working from button inside the car.
2. I went to many workshops no one know the reason every one saying may be wire expose problem but no one can find which wire.
3. The A/C fan is currently off for starting the car. I don't understand the issue with fuse #20 which keeps blowing.
Last edited by Civil.Aziz; Jun 7, 2015 at 06:37 AM.
MBWorld Fanatic!
Joined: Dec 2005
Posts: 4,846
Likes: 291
From: Dallas TX
2013 650i Coupe, 2010 IS250 AWD, 1999 S500
I think I might have the same problem. The fan will not come on. The display shows that everything is ok, but no air comes out, no fan running. Having my looked at next week for sure.
M
M
Junior Member
Joined: Jan 2008
Posts: 36
Likes: 1
From: Pretoria
W202 C200 1998, W123 200 1982, W123 230E 1982
CHeck your wing (Side) mirrors for wiring degration. Before opening opening up the mirrors, switch the ignition off, replace the fuse, and press the REST button. If the fan comes on, it is the wing mirror wiring.
Last edited by Laubscherc; Sep 12, 2015 at 10:24 AM. Reason: Typo
