crehop

So I had 1 LED light out on my smoked AMG tail lights and instead of buying a new one for $400 I decided to give repair a try. I started off by looking all over for other MB LED repairs, they are few and far between (probably a testament to MB quality, however I did manage to find a thread on it to track down the LED part number) The LED's is part number (Lite On Electronics LTL-911VEKSA LED,RED,WATER CLEAR,7.62x7.62) I was able to find a 20 pack on Ebay for $5.85. This was all before I even took it apart to see what what involved, but I wanted to be prepped before start. I started by removing the tail light (plenty of write ups on this so I wont cover that part) Once removed getting to the LED's is EXTREMELY easy.

First Remove the screws holding the LED backing plate.


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Then you have to be CAREFUL in removing the actual LED boards, they are all daisy chained together and must be removed in order. Make sure you disconnect the chain and start there. Unless the LED out is the last very small board, I recommend leaving it in as its hard to get to.



Once out, you can plug it back in to test, or if obvious, replace the bulb with issues. Mine ended up being just a loose connection, as it was repaired when I disassembled and plugged in. I hope this write up helps you tackle your LED out issues.

Frederick NL

Thanks for this, very useful. I removed the final, tiny board using a small tie wrap. The head slides under the board, along the side, and you can carefully unwedge it by pulling it up.

Frederick NL

Edited - I have the leds out and here is the strip, burning at a cautious 7,4 Volts. Individual leds should be tested at 2 Volts.

Frederick NL

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Frederick NL

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imtheking

so heres what my lights currently look like with no brakes applied

I think the entire bottom panel is supposed to be lit, right? I may need to replace almost all the LED's on both the left and right side

stayalive

ah damn mine looks same, did you fixed it?

Frederick NL

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emailger

Hi,

I've a couple of very corroded PCB boards on the LED daisy chain (rear runninging/breaking lights) from water damage. Some of the boards are working but not all. Can't seem to buy them from anywhere so I'm going to see if I can repair. Has anyone tried this? Thanks to this tread I have the LED part but I need to replace some of the resistors. Does anyone have knowledge of what size these resistors are?

Thanks

Frederick NL

The resistors have color codes on them so you would be able to 'read' their value. But I don't think you need to worry about those.
Clean the pcb's and test the individual leds at something like 2 volts. NEVER at 12 volts! Contrary to fairy tales, leds do die, but they are easy to test. Here's everything you need to know about them (and much more).

Frederick NL

Note polarity in conjunction with the angled corner of the led. The terms cathode and anode can be somewhat confusing.