tkafam

I'm looking for opinions. My rear window, drivers side, started not going up the half inch to seal with the front window. Searching the forums, it's either frayed wires, a new control module or just needs to be reset. I took the easiest path and disconnected the battery. The rear window worked great for about a day then started not going up the final little bit again. I disconnected the battery and it worked about for about a day then started doing the same thing.


I'm not much of a mechanical guy, but I'm thinking it has to be the control module on the passengers side back seat. If it were a frayed wire, I wouldn't think I'd be able to get it to work again, and it would keep malfunctioning after a day.


Has anybody had a similar experience?


Thanks.

biker349

how long did you disconnect the battery and did you do a reset? i had the problem, but on both front windows. disconnected battery for an hour, did reset and all is good.

tkafam

Thanks for the reply. Each time I've tried it, I had it disconnected for about an hour. If it happens again, I'll disconnect overnight and see if maybe that does the trick.


Any other thoughts anybody?

duhdenmark

There is a cheap used control unit on ebay buy and replace.

http://www.ebay.com/itm/2000-2006-MERCEDES-W215-CL600-CL500-CL55-REAR-WINDOW-CONTROL-MODULE-2158202326-/111229948398?pt=Motors_Car_Truck_Parts_Accessories&fits=Model%3ACL500&hash=item19e5d251ee&vxp=mtr
David

tkafam

nice find, thanks!

tkafam

So I went to purchase that module, but when I checked compatibility, it doesn't work with 2005. Does anybody know the part number for the 2005 by chance? It's too hot outside to go look for myself.

duhdenmark

I think there are only two models of the control unit.

go to autohausaz.com type in your car and you should be able to locate the right unit and its oem number.

David

AutohausAZ-Mike

Duhdenmark, thank you for mentioning us!

Unfortunately, we don't carry that particular part for your vehicle, but the part number that you were provided (ebay link) does show it is the correct part for the 2005 CL500. To be on the safe side, I would just recommend to get the part number from your original unit on the vehicle and compare to that part number.

duhdenmark

I have a 2000 CL500 and used the "newer" model of the control unit. It was plug and play and worked right away. I think they are compatable both back and forth, but of course it would be nice with the new unit since they may have improved on in?



To autohausaz: I really like your online shop. I wish it was cheaper for your guys to ship to Europe. We pay way to much for the parts here, but often shipping and taxes make it impossible to buy from you :-/ You should open a branch here in Europe :-)

David

tkafam

Okay, hate to beat a dead horse here. I found the part under the rear seat and the number is identical to the one on Ebay so I'm going to purchase it. Let me explain my symptoms though and see what you guys think.


So I disconnect the battery for an hour or two. I reconnect it and synch the windows. All four work great. Then, about two days later, the drivers side rear window stops going up the final 1/4 inch or whatever that amount is. About a week later, the drivers side front window stops going down the 1/4 inch or so it needs to when I open the door, and when I close it, the window hits the gasket around the door opening frame because the window didn't drop the 1/4 inch that it needs to.


The only other thing I notice is that if I lower the front window, when I put it up using the automatic up feature (depressing the up button and quickly letting it go) the window goes all the way up, but then lowers about 3 inches. I think that is a sign that the window sensor thinks the track is blocked. I don't see anything around the window that would make the sensor think it's blocked though, although where the gaskets meet at the side mirror could be the cause of the problem. It seems like the window rubs right at that spot.


The passenger side windows work great.


The part that should fix the rear window is called the rear window control module. That makes me think there is also a front window control module. Assuming there is, I guess both modules need to be replaced? Anybody know where that module is located, and what the part number is?


Sorry for the long post, I just want to make sure I get this fixed.


Thanks everybody.

tkafam

Here are photos of the front door, closed with the window up. I opened it but like I mentioned, the window doesn't drop so it hits the gasket when I close the door.

tkafam

Okay, I have some more info. I bought a replacement rear window control module. The result is the same, but interestingly enough, or more to the point, frustratingly enough, about 50% of the time all controls on the drivers side door don't work. The pneumatic close, all four windows, power mirrors, seat heater cooler and power seat controls are all dead. If I restart the car, sometimes all controls work. When the drivers side door is dead, the controls on the passenger side door work great. Is there a module that controls power to the drivers side door?

P ONE

Wow kafam, Im having the exact same problem on my 01 cl600. Did you ever get to the bottom of it?

tkafam

not 100% sure, but i'm thinking it's a frayed wire in the door. It's driving me nuts cuz I don't know how to fix it.

graytalon2000

You may want to check the wiring harness inside the accordion boot that is at the front of the door. I had my driver's door speakers quit working because the wiring inside the boot came apart.

P ONE

Where you able to fix the wiring harness yourself or did you have to take it to a mechanic? Ive scheduled to take mine to the stealership, but I sure dont want to.

duhdenmark

If you are average with a soldering iron you can do this yourself.


First off, just pull the big rubber protector back.


Then carefully cut a hole in the small rubber hose that surrounds the wires. Again be careful not to cut the wires in this process.


You will most likely discover that many wires are almost cut. If not then I would look for a used door control module and swap that out.


David

graytalon2000

I used butt connectors to fix my broken wires. Using the connectors added a little bit of slack in the wiring relieving some of the stress on the harness. That was about a year ago and still working fine today.

XZACM102

I had the exact same issue and just got my car back from the shop couple days ago. They had to replace motor part# 230 820 10 42. Not every time these issues are caused by door control module. The motor is also cheaper to buy/replace than module.

tusabes

Have the same problem with my rear windows and passenger side front window