Pristine

I have a 2014 E-350, and the rear LED light on one side is out. There is no warning light on the dash that indicates that the light is out. I took it to an independent Mercedes shop and the guy said that the whole light assembly will need to be replaced. The part is around $250.

I'm surprised that we have to replace the whole light assembly if the lights go out. Please let me know if you have any experience with this and what are the options


.

Pristine

Based on couple of threads I've seen, it seems I may have to replace the entire light assembly - which sucks.

KEY08

konigstiger

$222 new / free shipping https://www.ebay.com/p/Mercedes-Benz...403/1834276140 or shop used.

Pristine

Thanks for the links and the instructions. I may have to end up buying a new unit to get this working.

I'm surprised that the LED lights went out so quickly. If anyone has any other suggestions to check before buying the new tail lamp, please let me know.

BenzoPro

Thanks for the PN. I verified that it's the PN that I needed so I went ahead and ordered it but not on ebay. The ebay seller has some sketchy reviews. https://www.mbpartsprime.com/ has it and it's been shipped, I should have it soon.

konigstiger

Ebay site offered lowest price, posted in response to KEY08 comment. Also consider/shop following for future part purchases:

https://www.parts.com/
https://www.mbdirectparts.com/

mercerized

AGREE with mbdirectparts out of Lincoln, Nebraska.
Vic is a MB parts guru and has always given me correct part numbers and best dealership prices.

cetialpha5

Probably the electronics. You could try redoing the solder joints on the board of the taillight.

Or just sell the old one on Ebay, for some reason people still buy broken stuff.

Pristine

Good news - I noticed tonight that the light has come back on. I just hope that it stays on and I don't end up wasting money unnecessarily for a new unit.

Mud

Have you tried just unplugging then replugging the light assembly? Sometimes one of the pins doesn't make good contact or there's a bit of corrosion in the connector.
This method fixed an intermittent "off" situation with the back up camera in my car.

musclegto

Wow, is replacing the whole assembly really the only way to fix this?

cetialpha5

Well considering an entire assembly is under $200, it's probably cheaper than doing board level diagnostics and no guarantee that it will be fixed permanently. At least with a new one you have a one year warranty and it will probably last as long or longer than the original one. It's not common for them to fail.

https://www.rockauto.com/en/moreinfo...pt=807&jsn=946

DFWdude

The facelift cars are full LED tail lights... Accordingly, there are no user serviceable parts, other than to replace the unit.

The price is about as cheap (or cheaper) than any MB appearance item I have ever seen.

BenzV12

I have been having same issue as well .
Here's my thread for those who like to tackle DIY . All the credit goes to S-Piradi
LED Tail Light Mystery - MBWorld.org Forums

801

related thread that I created a while back for the inner tail light. might be helpful
but yes ... outer or inner tail light assembly must be replaced as a whole assembly.
they can be found for cheap

https://mbworld.org/forums/e-class-w...ml#post8722327

Edward993

I posted this very same problem not too long ago. It is an intermittent problem on these taillights. Another poster (in my old thread) said the same as above: failing solder joints. It is worth it for me (2 bills worth it!) to open up the assembly and hit all the connections with fresh solder. It can't hurt. I just haven't gotten the time to do it yet...

Edward

strife

The best thing that ever happened to the electronics industry is the banning of lead in solder. Government mandated planned obsolescence! A much better path would have been the required recycling of electronic parts.