Explanation of fuses/relays in '93 190E - Mercedes-Benz Forum
 
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#1 (permalink) Old 09-29-2013, 03:18 PM
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Explanation of fuses/relays in '93 190E

Hello, new to both MB and this site. I'm having some electrical issues. My driver-front window is not working and I was wondering if it was the relay.

Is it possible for the other windows to work if the relay was the problem or would ALL windows not work? Also, how do I know when one is bad? Do they pop up? Are the prongs burnt/discolored?

I've attached a pic of my fuse box for whatever its worth. I'm also curious about the function of the 1 silver and 1 black relay that is near the blue 25amp fuses that are in front of the fuse box. Thanks and happy driving.
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#2 (permalink) Old 09-29-2013, 03:44 PM
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Originally Posted by oregon4418 View Post

Is it possible for the other windows to work if the relay was the problem or would ALL windows not work? Also, how do I know when one is bad? Do they pop up? Are the prongs burnt/discolored?

Not likely the relay. Your window problem is either in the wiring from the switch to the motor, in the switch itself, or in the motor.

Do a search here. I just had a couple of frustrating weeks with this same problem. It was both my motor and the front window switch. The switches particularly, accumulate debris through years. They are easy to dismantle, lube and reassemble. That's likely your first step. Then check the continuity in your wiring. I'm told some wires get frayed at the door. Mine looked new but I'll take the word of others. Lastly check your motor. It's the one that gets used the most.
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#3 (permalink) Old 09-29-2013, 04:07 PM
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A quick fix might be, make sure the driver side rear window is all the way up. Then pop up the wooden panel with the switches and put the driver switch's wiring plug on the rear door's switch.
That will at least test the switch.
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#4 (permalink) Old 09-29-2013, 09:20 PM
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How do I pop the wood console with the switches? Just pry the wood panel out with a flat-head? Thanks, everyone, for your help.
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#5 (permalink) Old 09-29-2013, 10:00 PM
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Pop it up carefully at the back. When the back is loose slide it slightly to the rear and up it comes. There are 4 plastic snaps, two in front and two in back. If you're not careful those will break and then holding the wood down in the future, will be difficult.

Download the shop manual from the stickies at the top. That will give you all the info you seek, including identification of your fuses and relays.
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#6 (permalink) Old 09-29-2013, 10:16 PM
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Download the shop manual from where?
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#7 (permalink) Old 09-30-2013, 12:38 AM
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according to ur profile u have a 93 so its the later style switch. stickied thread has all info u need on the shop manual. from the sound of it sounds like the switch is bad which is common. the wood console is easy, just do a search. to get the wood console off u pop off the plastic ring around the shifter then take a plastic "bone tool" slide it between the shifter and wood near the rear edge of the shifter adn pop the wood up and your done. be careful its held in by strong plastic clips and if ur not careful they will break.


1993 MB 190E 2.3 105k- its alive.. 1996 Volvo 855 GLT-R 350k still rolling
1998 Subaru Outback SUS 210k- Daily Driver 2011 Toyota Camry XLE 36k
1991 BMW 525I stock as stock gets 98k (Wrecked) 1998 MB C230 209k possessed by the devil
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