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W204 Rear Lamp Warning - Dangerous

ragazzi

New Member
Joined
Aug 5, 2013
Messages
29
Location
Manchester, UK
Car
E250 AMG Sport
To cut a long story short, I have emailed mb compaints as the brown wire (earth) has melted into the pin and through to the cluster. Pics attached.

I had my little lad in the car when the warnings happened, I am thinking this could have set the whole car up in flames? Or am I being a bit dramatic?

Pics attached.
 

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The system worked did it not? You were alerted to the problem.
 
Usually caused by a poor/loose connection meaning that the resistance [ and voltage drop] at that point is very high. This causes overheating and melting of the surrounding plastic. Usually the resistance eventually reaches a level where the supplying circuit fuse blows before fire occurs. Unless its known manufacturing fault its usually impossible to post mortem the fault as the localised area of the fault is usually destroyed by the time its discovered. You are right to draw it to MB's attention-- be interesting to hear their response.
 
In USA, this has been a recall on the w204. The warning system worked, but it should not have happened in the first place.

To smell burning, not something I have ever had to do.

See below, a bit of googling - this is a common problem!


Resurrecting this as still an open issue. This has been reported in the US, Belgium and the UK to name a few. MB UK say they don't know of it (the US regulator knows about it, so they didn't tell MB US (and they didn't in turn tell MB Germany), right!) and, in my case, won't honour a 100% contribution. Yes, it is a simple job and the parts are c. £30 but the cost goes up as the plug connectors all need re-soldering.

Check out these reports and what owners have said - amazing!...

“Have had the same problem with mine; the earth is common to all circuits and is a stupid little wire that uses the same size of connector as the others. As a result it heats up and eventually builds up crud that stops all the circuits working, including the fall-back circuits. A very dangerous piece of poor design by MB!”

http://www.autonews.com/article/20130715/OEM11/130...

DETROIT (Reuters) -- U.S. safety regulators have opened a probe of an estimated 218,000 Mercedes C-class sedans after receiving consumer complaints claiming a failure of rear turn signals and brake lights. The U.S. National Highway Traffic Safety Administration opened a preliminary evaluation of the luxury cars from model years 2008 and 2009 after receiving 21 complaints from U.S. consumers.

The reports typically said the failure is with the lamp connector, with many indicating burnt or melted electrical components, according to NHTSA documents. In multiple instances, consumers have reported smelling smoke and seeing burn marks in the trunks of the cars, with one reporting small flames emanating from the rear lamp connector, NHTSA said.

http://www.nydailynews.com/autos/flaming-hot-benz-...
“In another case, from June of 2012, a C-Class owner told NHTSA that the right rear tail light wiring harness caught fire and melted.”

IMHO, an issue like this should come outside of age, mileage and even goodwill gestures and no owner should be asked to pay for poorly designed parts especially on a 3 ½ year old vehicle – whether luxury or not.

Does anyone has experience of this particular issue or similar treatment via other manufacturers?

Latest:
FFS, just found this from 24th December just gone…

http://abcnews.go.com/Business/wireStory/feds-expa...
Investigators say the problem appears to be worsening as the vehicles get older. A Mercedes spokesman said the company is cooperating with the investigation.

... and yet MB UK do not know of this issue.
 
Yes they do know.

Its on their technical documents on a online system called TIPS.
 
This was common on the BMW 3 series.
It happened on mine, probably made at the same supplier to both BMW and Mercedes
 
Hi
sorry you have been hit with the problem, mine too had the same issue which started with the offside light cluster being "dimmer" than the nearside, using my limited mechanical knowledge I assumed a bad earth connection. checking the earth I found the same burnt wire which prompted a google search, it seems that MB uk are more than a little reluctant to fix this issue so I did it myself by replacing the earth lead after finding a video on you tube using a thicker wire which I soldered onto the metal earth terminal and then bolted directly to the earth point. Really simple fix and fixed the issue also done the authorised now as a precaution although all issues seem to be just on the R/H cluster.


good luck with a warrenty claim
 
Common complaint, Mercedes will not pay/contribute expect to pay around £60 a lamp to repair, (double if you go to Mercedes) you will need a bulb holder, Earth wire, 7 electrical pins and a plastic plug from mercedes.
 
Go into any Mercedes dealer , they now repair these free of charge
 
Thanks Gav105N, I didn't realise this until I got a call from my local Mercedes Benz dealer (after my email to MBUK), whom I had been in with last month due to the coolant leak.

The car is in now for the repair to FOC.
 

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