front turn signal not working
Thread Starter
Junior Member
Joined: Jan 2018
Posts: 18
Likes: 2
From: NH
1976 450 SL, C32 AMG 2004, ML350 2010, 2004 E55, 2015 E350
front turn signal not working
I have a 2015 E350 and the right front turn signal that is integrated with the headlight assembly either comes on part way (some LED light up) or not on at all. The warning message comes on. My question. What is the most likely cause? How do your replace the turn signal LED light string that is in the headlight?
Junior Member
Joined: Mar 2020
Posts: 42
Likes: 2
From: Tripolo-Libanon
W212 2011
first put the headlight on a furnace with 180 degree make sure you remove all 3 blots and all metallic pieces
after that disassemble the lights and replace the turn light
i had the same issue but on my w212 after that make sure that you assemble the headlight with high quality silicone without acid
this is the led signal
Trending Topics
MBWorld Fanatic!
Joined: Jul 2008
Posts: 8,384
Likes: 800
2019 G70 6MT & 2022 Ford Maverick XL
I mean, that depends on exactly how good you are working with this stuff. Sure you potentially dissect the entire assembly and maybe be able to repair this unit, but maybe not. The diodes are not serviceable.
Good news it that you should be able to pick up one used online or potentially even a new one at a discount - they are manufactured by Hella for Mercedes, so if you see a Hella branded one that is the same as OEM*
*potentially it will not say "Mercedes-Benz" inside the light.
Link: https://www.ebay.com/p/1583154267
Good news it that you should be able to pick up one used online or potentially even a new one at a discount - they are manufactured by Hella for Mercedes, so if you see a Hella branded one that is the same as OEM*
*potentially it will not say "Mercedes-Benz" inside the light.
Link: https://www.ebay.com/p/1583154267
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Thread Starter
Junior Member
Joined: Jan 2018
Posts: 18
Likes: 2
From: NH
1976 450 SL, C32 AMG 2004, ML350 2010, 2004 E55, 2015 E350
I mean, that depends on exactly how good you are working with this stuff. Sure you potentially dissect the entire assembly and maybe be able to repair this unit, but maybe not. The diodes are not serviceable.
Good news it that you should be able to pick up one used online or potentially even a new one at a discount - they are manufactured by Hella for Mercedes, so if you see a Hella branded one that is the same as OEM*
*potentially it will not say "Mercedes-Benz" inside the light.
Link: https://www.ebay.com/p/1583154267
Good news it that you should be able to pick up one used online or potentially even a new one at a discount - they are manufactured by Hella for Mercedes, so if you see a Hella branded one that is the same as OEM*
*potentially it will not say "Mercedes-Benz" inside the light.
Link: https://www.ebay.com/p/1583154267
Thread Starter
Junior Member
Joined: Jan 2018
Posts: 18
Likes: 2
From: NH
1976 450 SL, C32 AMG 2004, ML350 2010, 2004 E55, 2015 E350
that would be great the VIN is WDDHF8JB1FB165445. Thanks a lot
Thread Starter
Junior Member
Joined: Jan 2018
Posts: 18
Likes: 2
From: NH
1976 450 SL, C32 AMG 2004, ML350 2010, 2004 E55, 2015 E350
Thread Starter
Junior Member
Joined: Jan 2018
Posts: 18
Likes: 2
From: NH
1976 450 SL, C32 AMG 2004, ML350 2010, 2004 E55, 2015 E350
UPDATE: brought the car to MB they pulled error codes B223900, B285711, B285811, B286011. Which is error for each of the lights. The blinker and parking light is out. I know i have moisture and that will have to be fixed (thanks LLIBENZ230), but I am think that maybe it is just a module given all the light error codes.
Question for Konigstiger: which module would throw those error codes 2228700789 or 2189007306?
Question for Konigstiger: which module would throw those error codes 2228700789 or 2189007306?
Thread Starter
Junior Member
Joined: Jan 2018
Posts: 18
Likes: 2
From: NH
1976 450 SL, C32 AMG 2004, ML350 2010, 2004 E55, 2015 E350
UPDATE: brought the car to MB they pulled error codes B223900, B285711, B285811, B286011. Which is error for each of the lights. The blinker and parking light is out. I know i have moisture and that will have to be fixed (thanks LLIBENZ230), but I am think that maybe it is just a module given all the light error codes.
Question for Konigstiger: which module would throw those error codes 2228700789 or 2189007306?
Question for Konigstiger: which module would throw those error codes 2228700789 or 2189007306?
Out Of Control!!
Joined: Jul 2003
Posts: 15,901
Likes: 4,630
From: North Scottsdale, AZ
'71 Pinto
Thread Starter
Junior Member
Joined: Jan 2018
Posts: 18
Likes: 2
From: NH
1976 450 SL, C32 AMG 2004, ML350 2010, 2004 E55, 2015 E350
MB would only give me a $900 to replace the light control module but refused to give me the part number.
Newbie
Joined: Sep 2025
Posts: 7
Likes: 2
From: United Kingdom
Mercedes-Benz S550 (S-Class)
Hey, I had a similar issue with my Mercedes a while back, one of the front turn signals would flicker or not come on at all, and I kept getting the warning on the dash. On these newer cars, the turn signals aren’t just bulbs, they’re part of an LED string inside the headlight, controlled by a small module. Sometimes it’s just a loose connection, but other times the LED strip or the control module itself can fail. While looking for solutions online, I came across this LED control unit: https://xenons4u.co.uk/a2059006805-l...trol-unit.html. I’m not 100% sure it will fit a 2015 E350, so definitely check compatibility first. As for replacing the turn signal LED string itself, unfortunately, you can’t just swap a single LED like a normal bulb. You have to:
- Remove the headlight assembly from the car (usually by opening the hood and unbolting a few screws).
- Disconnect the wiring and control module carefully.
- Replace the LED strip or the entire module inside the headlight. Some people even end up replacing the whole headlight if the LED strip isn’t sold separately.
- Reconnect everything and test before fully reassembling.
Thread Starter
Junior Member
Joined: Jan 2018
Posts: 18
Likes: 2
From: NH
1976 450 SL, C32 AMG 2004, ML350 2010, 2004 E55, 2015 E350
Hey, I had a similar issue with my Mercedes a while back, one of the front turn signals would flicker or not come on at all, and I kept getting the warning on the dash. On these newer cars, the turn signals aren’t just bulbs, they’re part of an LED string inside the headlight, controlled by a small module. Sometimes it’s just a loose connection, but other times the LED strip or the control module itself can fail. While looking for solutions online, I came across this LED control unit: https://xenons4u.co.uk/a2059006805-l...trol-unit.html. I’m not 100% sure it will fit a 2015 E350, so definitely check compatibility first. As for replacing the turn signal LED string itself, unfortunately, you can’t just swap a single LED like a normal bulb. You have to:
- Remove the headlight assembly from the car (usually by opening the hood and unbolting a few screws).
- Disconnect the wiring and control module carefully.
- Replace the LED strip or the entire module inside the headlight. Some people even end up replacing the whole headlight if the LED strip isn’t sold separately.
- Reconnect everything and test before fully reassembling.
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
