hello, I have a 98 S420 and my seats stopped working, I have recently changed my mirror control switch out and shortly after that the fuse blew for the mirrors and seats stopped working. I have power to the fuse's and even to the seats but they dont work also my steering wheel adjustment dont work. any ideas?

They are all connected, so if one of those fuses goes out, all those mechanisms won't work. Happened to my 98 S420 as well.

when i change the fuse for the mirrors it blows as soon as power is applied

the 4 fuses for the seats do not blow

Check this thread out: https://mbworld.org/forums/s-class-w...p-working.html

There is what is known as a comfort control module which is located in the foot well of the right front passenger seat in the sloped area just forward of the level floor. The part number is 1408201426 in my 1997 S420. It is what remembers your settings when you hit the memory button on the front door. These parts can be purchased from eBay or auto dismantlers for about $50 or so and are simple to install. It sounds like the replacement of this module may solve your issues.

Paul Curtis

i had been working on my 97 s420 for almost 6 months with the same problem and after changing all fuses and related relays I found out that comfort module in the trunk above the battery well, was burnt. Part # 1408100026. Replaced it from junk yard ($15) and every thing has been working well since.

sorry part # 1408200026