Intermittent Electrical Problem - 1998 C280

[74merc]

Hi, whilst driving to work this morning I temporarily lost all power to the indicators, wipers, electric windows and sunroof. I've done some searching and it seems to point to a relay problem rather than a fuse problem. I believe the relay in question is an N10, does anyone know if it supplies power to all of the above.
Cheers
Martin

 

[Dec]

This is just for reference as your car is much later but the N10 is in around number 1 in picture others will enlighten you some more. I think the windows/sunroof aren’t on the N10 but there may be a relay in boot but not sure about that.

Dec

 

[television]

As Decs post or the ignition switch going faulty

 

[74merc]

Thanks Dec and TV. I must see if I can find a wiring diagram for this. I know this will fail again, hopefully not when the windows and sunroof are open!

 

[bigasotonuk]

When and if they fail again, turn the ignition off, remove the key and open the drivers door as i believe you should have a courtesy system which puts power on the windows and the sunroof, it goes through another control unit (comfort control i believe) my understanding of the system is this comfort control unit takes over the window and sunroof functions thus eliminating the N10 relay, if they still don,t work i would be suspecting the unit in the fuse box, which MB call a SAM (Signal Acquisition Module) its the unit that the N10 relay plugs into.
Please bear in mind this is how i believe the system operates, and it is where i would start from if it was my car.