Tail light connector melted
Remember- you are not a customer complaining about floormats wearing out. These are the BRAKELIGHTS we're talking about.
You should not have to pay, but if you do- the couple hundred $$$ might be somewhat high but not completely out of range. That price most likely includes the labor which is NEVER cheap.
Especially after refusing to take it the stealer (being thickheaded), I gotta say I feel a little stupid.
Brakes illuminate properly, turns work, and rear fog turns on when needed.
I kind of like the way it looks, but would prefer it was the original way with two lit bars for visibility reasons. Pretty sure it's not a burnt bulb since the fog works. Also I only worked on the RIGHT side today, but somehow the left stopped working too.

p.s. If I could somehow get the top bar to turn on only when I'm braking that would actually be cool and maybe even more noticeable when braking.
Last edited by dcjwlee; Oct 14, 2012 at 10:19 PM.
Especially after refusing to take it the stealer (being thickheaded), I gotta say I feel a little stupid.
Brakes illuminate properly, turns work, and rear fog turns on when needed.
I kind of like the way it looks, but would prefer it was the original way with two lit bars for visibility reasons. Pretty sure it's not a burnt bulb since the fog works. Also I only worked on the RIGHT side today, but somehow the left stopped working too.

p.s. If I could somehow get the top bar to turn on only when I'm braking that would actually be cool and maybe even more noticeable when braking.
p.s. It only took me 45 minutes to solder in and heat shrink the 7 new leads.
The Best of Mercedes & AMG
Unfortunately these tail light assemblies are not the result of typical German engineering, but are a result of some very poorly thought out electrics.
As all the current from the tail light assembly from each light bulb passes through the brown earth wire, when you have a small resistance in the pin connections ie. one or two ohms and with all lights operational, that is stop, indicator,reverse, tail and side lights the peak current can be near 8-12 amps.
Ohms law gives us heating power of about 20 watts. This is the same as a small soldering iron. Not something you want hidden away in the trunk. if you examine the connector you can see that it is not designed to carry this amount of current or disperse this type of heat.

Mercedes really screwed the pooch when they let this design pass the scrutiny of the QC team. The earth connector should be at least 3 times larger than it is at the moment, or a fixed wire from the main Earth connector on the power module to the bulb holder earth will cure the problem

Posted this on another thread
Especially after refusing to take it the stealer (being thickheaded), I gotta say I feel a little stupid.
Brakes illuminate properly, turns work, and rear fog turns on when needed.
I kind of like the way it looks, but would prefer it was the original way with two lit bars for visibility reasons. Pretty sure it's not a burnt bulb since the fog works. Also I only worked on the RIGHT side today, but somehow the left stopped working too.
p.s. If I could somehow get the top bar to turn on only when I'm braking that would actually be cool and maybe even more noticeable when braking.
I have the same issue on my car and would to do it myself, I'm assuming you cut the old wires off the old melted connecter, but how did you secure the new wires to the new connector?
I can give you the part # later as I don't have the invoice with me right now. I ordered 1 connector (black piece), 1 bulb plate, and 7 "pins".
I stripped the wires one by one, attaching the pin and placing it in the correct slot in the connector, to avoid mixing up any wires. You could also take a photo of the initial set up but the wires are multicolored.
I know some people choose to solder the wire directly to the bulb plate and then heat shrink insulation around it or something like that.
So far so good for me.
Haven't done any trouble shooting to fix the new "issue" as I do kind of like it as well. The error message is a little annoying and I think I will try to find a way to get rid of them for cheap before I sell the car.z
LandSeaAir, the pins are a bit of a hassle to get out correctly and I actually had to break one out of the connector (they can be removed with some patience and skill neither of which I possess) to see how the wire was supposed to fit into the pin. You strip the wire up to the first set of "tabs" and they should be touching rubber when folded down. The second set of tabs further up the pin should be folded onto the bare wire. You don't need to try to fit the wire into the little "hole" in the pin. This is all if I remember correctly so take it with a grain of salt.
Ia lso noticed the similarity to older E/S classes and I think it gives it a slightly more sinister look at night. Idk. *shrug*
Last edited by dcjwlee; Nov 22, 2012 at 10:37 PM.
I have the exact same problem, my c300 2008 which was out of extended warranty by one month, Now have this issue. I will call dealer on monday to see if he will do as a good will and do it for free.
If not I am planning to buy below parts.(where did you buy them at the dealer or online)
1 204-820-09-77 lamp carrier right
1 211-545-03-28 plug
7 014-545-82-26 pin bushing.
Are these the right parts?
I will cut the 7 wires(How easy is it to get the old pins out?) , how easy is it to connect the wires to the pins and put it in the plug. Do I need to solder anything. or just press wires into pin bushing and .
Thanks
I have the exact same problem, my c300 2008 which was out of extended warranty by one month, Now have this issue. I will call dealer on monday to see if he will do as a good will and do it for free.
If not I am planning to buy below parts.(where did you buy them at the dealer or online)
1 204-820-09-77 lamp carrier right
1 211-545-03-28 plug
7 014-545-82-26 pin bushing.
Are these the right parts?
I will cut the 7 wires(How easy is it to get the old pins out?) , how easy is it to connect the wires to the pins and put it in the plug. Do I need to solder anything. or just press wires into pin bushing and .
Thanks
There is also a little "snap down" piece on the connector, don't press it down until you have all the connectors in place.
I bought the items from the dealership to avoid any headache from getting the wrong part. Seven pins, one connector, one bulb plate came out to around $60 IIRC.
Cut the wires one by one and place them in the corresponding hole BEFORE cutting the next wire. Not only will you avoid making any contact between the wires, but you will not mix any of them up.
If not I will buy parts and fix them. Did any one figure out how to reset the messages on Dashboards.
Thanks
If not I will buy parts and fix them. Did any one figure out how to reset the messages on Dashboards.
Thanks
The Service Advisor told me there would be charge for the repair. I asked to speak to the Service Manager and when I spoke to him- I advised it was a Safety Issue since my brake lights were working intermittently and he said it would be covered. It had also been noted in the computer that back in May/June 2011 I had received bulb-out error messages and when the dealership checked it- they were "checking" the harness because some of the connectors were "known" to come loose. Not sure if this helped.
I you don't receive cooperation- contact MBUSA and focus on the SAFETY ISSUE OF DEFECTIVE BRAKE LIGHTS. They are complete fools looking for a major lawsuit if they fail to act.
I have all the parts, as its cheeper for me to order them, then driver 2 hours one way to get fixed at stealership...
). A week later my wife saw a warning message about the right rear tail light. I took the car back in and the dealer found the right rear tail light assembly had a melted wire. Even though the car is out of warranty, the SA insisted on blaming the meltdown on a splice I had made on the power to the backup light for my aftermarket back up camera (see the Cyclops thread)
. This was ridiculous, and I finally got him to admit that he had seen a "number" of melted tail light assemblies on early W204s. Long story short...I paid $500 or so to have the tail light assembly replaced and, guess what??? The right rear is no longer dimmer than the left! So, if a dimmer right light is normal, I guess my car is "abnormal". The subpar engineering is bad, but the refusal of the SAs to be rational and candid is disturbing. My wife loves this car, but I am not sure I'll buy another MB.
The pins, connector, and bulb board combined should have been under $60. I would not pay more than a half an hour of labor to address this issue. At $120-$140 an hour it should have cost no more than $60-$70.







