Oh man you saved me a lot of hassle and frustration that I couldn’t fix this problem for the last 6 months . I checked each and every fuse since that was my suspicion to be bad. Thanks thanks……thanks. 😊
Did you have a zip tie holding the wiring down, as well, like this guy? Take it off & leave it off. It doesn't need to be there & hence you shouldn't have had a problem.
My brown wire just broke now and this video helped, thanks. It is amazing most other videos on this issue always were caused by the broken brown wire, not the other ones. I think there is a design fault here but Mercedes is not willing to do a recall to fix this common problem 😦
Thank you. Great tips. 2 wires were broken in my case on my E280 2009 model. All the wires was housed in a black conduit cable sleeving tube. The problem is the conduit cable tube has been broken into 2 pieces and become the bending point to cause the wire to break over time.
Thaaaank youuuu. It was the brown one, it was cut like it was done by a human. Everything works. Now im afraid i have a rat in my car. Thumbs up for you
No problem! Glad the video helped. They’re always broken flush like they were cut. It’s just from consistent bending in the exact same spot. Shouldn’t need to worry about a rodent, unless there is evidence of droppings in the car
BTW, you can join the wiring by simply twisting the two halves of the bared wire together & insulate with heat shrink, NOT electrical tape, as tape can start falling off with age! Simple fact!
If Japanese cars are not having similar problem of insulation going brittle then Mercedes are using wiring having sub par plastic materials. It is possible they are blending in too much % recycle plastic when making their wiring?. This would be a consideration for class action lawsuit?.
That’s more likely an issue with the release mechanism. The broke. Ground wire as shown in the video is usually apparent when 3 things happen: License plate lights out message/ license plate lights not working, trunk doesnt open without key and interior trunk light (mounted to trunk lid) doesn’t work
Usually if the back windows are not working only it’s the driver door switch having an issue with its rear window lock switch. If it’s just one window, it would be that switch or regulator
It’s always a good idea but not necessary. Just want to be sure not to not let an exposed (stripped) power wire touch the metal body anywhere. Otherwise there could be sparks and you might pop a fuse
Likely the cinch actuation within the latch isn’t working. Would recommend looking into how the cinch actuator works on that car. My E350 isn’t powered so I’m not to sure.
I haven’t looked at this yet but my third brake light and my power trunk doesn’t work and after reading on forums many others have had the same problem
@@MercedesTech okay I found the broken brown wire but when I touch them together the alarm goes off and the lights come on will it cause a problem if I solder the wires together or is the alarm just part of a safety feature and should I just disconnect the battery solder the wire and reconnect it Edit: I said whatever and taped it but now the only problem is the trunk is unlocked every time the car is unlock even if I don’t press the trunk unlock button, and the trunk unlock doesn’t do anything
Sounds like something else is going on. Be sure to check the same bundle of wires for more broken wires. There are often more than just 1 broken. Be sure of course you have the same color wires taped together and that you got them all.
Ayye just wanna cosign. I sent buddy this video and he came over and we got it done in an hour or two. The wire was split in half under some electrical tape / zip ties. Thank you ! 😇@@MercedesTech
Could be, very common on 211 sedans. But pretty much applies to any make or model door wiring. Sometimes they just break over time from opening and shutting and heating up and cooling down hundreds of times
@@MercedesTech I checked my RH license plate and find out there is no power to the wire and that wire is coming from the module, so what I did was just eliminate the wire from the module and join together with LH side license plate light which was working. So I’ll just live with the RH side error warning ⛔️
@@mzee5533 Nice 👍 at least you got it working. Perhaps there is a break or short to ground in that wire somewhere in the car. Or something wrong with the module.
Your problem was the zip tie which actually tightens the sharp angle for the wiring to drop into the area intended by Mercedes, who never put a zip tie on the trunk bracket. I've got a 2003 W211 E320 which is 20 years old. It has no zip tie & the brown wire never looks like breaking. The zip tie can actually cut the wire over a number of years & this, my friend, is your problem. Mercedes actually have the wiring routed down the underside of the trunk bracket, held in place by clips pushed into holes in the bracket. This is NOT a common problem on the W211 if you don't interfere with the wiring. Take the zip tie off & leave the wiring alone, as Mercedes intended!!!!!
@@MercedesTech Maybe Uhh,ok? to you pal, but I've owned Mercedes cars (3) off, for a number of years, all sedans, a W124, W203 & W211 & never a problem with "trunk wiring". Obviously somebody couldn't keep away from zip ties & the result is broken wiring. End of the argument!!!!!
