Fuse or relay?

[85vert]

Hello, I'm new to the forum and recently purschased a 1998 C230. Love the car, but already experiencing my first problem with it and hope that someone can help.

Had the car parked overnight without any problems and the next day my remote wouldn't open the door. Batteries in remote were good, but to be sure I put in new batteries and still nothing. I opened the door manually and the alarm went off, stuck the key in ignition started car thinking the alarm would turn off, but it didn't. Ended up turning the alarm off using key in trunk. Strange part is that along with the remote, none of the following are NOT working:

windows
turn signals
wipers
door lock switch
trunk switch
rear head rest switch
power seat
front dome light

Figured it was a fuse, but they're all good. Also, checked the fuses with a test light and all is good. Is there a relay that covers all listed above? I was thinking it might be the key, but the service advisor at MB said that a bad key wouldn't cause this and it sounds like a fuse. I like working on my own cars and don't want to take it to the dealer if it's an easy fix.

Has anyone ever experienced this? Any help would be greatly appreciated. Thanks in advance.

[predrag1]

I left the lights on for the whole night on my sisters car once and she had to call the mechanic to unlock it in the morning lol :(

[85vert]

The battery in the car is good. Started right up no problem :confused:

[jnolte]

that is a weird one. There are fuses in the Trunk and under the hood. so you may want to check both if you havent

[85vert]

Yeah, I'm stumped. Check all the fuses under the hood, fuse box on drivers/passenger side along with fuses in trunk. I'm thinking it a relay somewhere.

[xvvvz]

Maybe the combination relay? Look here:

http://www.club202.com/forums/showthread.php?s=&threadid=10043&highlight=wiper+relay

[85vert]

Thanks, but they don't show a listing for a combo relay on a 98 C230.

[jnenad16]

Im not sure, but early 202's had a convenience module in the trunk, which controlled most of those things, but like I said, Im not sure if the 98' or later had it.

nenad

[timmyj51]

Doubt it's the combination relay. Did your remote entry come with the car or was it instralled?
If the latter my guess is whoever installed it screwed something
up electrically when they put it in.

[85vert]

Came with the car and is OEM. Dropped the car off at the dealership this morning, had it all day and they can't seem to find the problem. They're going to keep it overnight and keep working on it. They think there maybe a short somewhere or water leaked into one of the electrical components, dunno

[85vert]

Got the car back from the dealer. Turns out there was a short in the right rear door control unit. Dealer wanted $820 to replace unit. According to dealer the reason so expensive is that the unit only comes in a kit along with window motor and regulator. I opted to repair on my own. The tech unpluged the control unit for the meantime and everything except the right rear window is now working. Now all I have to do is find a control unit. Any ideas where to pick one up? Thanks for everyones help.

Cheers

[OzC36]

Online spares from virtually any supplier?

http://www.bmaparts.com/epcksoap.epc?action=Search&cookieID=21E0IQRK321E0J57ST&drillid=7&subcatid=802786@@Rear+Power+Window+Regulator&clientid=bmaparts

Cheers!

[85vert]

Thanks!!