LED Trailer Tail Lights Will Not Work when Connected to a 2009 Mercedes GL550 with Factory 7-Way
Question:
Hi, I have 2009 MB GL550 and recently tried to rent a trailer to haul my motorcycle. Upon hooking up the trailer, we discovered the LED lights on trailer would not light. The team at the rental place mentioned they get there was a problem with some Euro manufacturers and LED. I researched the problem on MBZ forums and was directed here. I have a factory hitch with the 7way adapter. Do you have a converteri to solve the LED issue. I generally convert to 4way flat style as I think most trailers have. By the way, no LED lights work just fine on my hitch. Its just that many rental places have moved to LEDs. Help?
asked by: Jamie F
Expert Reply:
There is an issue with German vehicles (Audi, Mercedes, Porsche, BMW, Volkswagen, and so on) and trailers with LED lights. The LED trailer lights do not offer enough draw on the system for the lights to work. On a lot of these vehicles you will also get a bulb-out warning in the vehicle.
The solution is to use an adapter that has load resistors in it, # C35FR, to provide enough draw so the lights will work and so you will not get that bulb-out warning. The adapter will go from a 7-Way on a vehicle to a 4-Way or 5-Way flat on a trailer. We also have # C57003 to go from a 7-Way to a 7-Way.
Products Referenced in This Question
7-Way to 4-Way/5-Way Trailer Adapter for Vehicles with Lamp-Out Sensors Towing Trailers with LEDs
- Trailer Wiring
- Wiring Adapters
- Multi-Function Adapter
- 7 Round - Blade
- Plug Only
- 5 Flat
- 4 Flat
- CURT
more information >
7-Way Trailer Adapter for Towing Trailers with LED Lights
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Custom Fit
- 7 Round - Blade
- CURT
more information >
Product Page this Question was Asked From
Hopkins Active Tail Light Converter with Install Kit
- Trailer Wiring
- Trailer Connectors
- Vehicle End Connector
- Plug and Lead
- 4 Flat
- Hopkins
more information >
Featured Help Information
Instructions
Continue Researching
- Shop: Trailer Wiring
- Video: Curt Class 5 Universal Weld-on Hitch w/ Brackets - 2" Receiver - Review 15903
- Search Results: 15902
- Search Results: c57003
- Search Results: 41990~16
- Q&A: Trailer Lights Not Working Using 4- to 7-Way Adapter on a 2012 Mercedes GL450
- Q&A: How To Choose The Correct Trailer Hitch For Your 2017 Georgetown 369XL Class A Motorhome
- Shop: 7-Way Trailer Adapter for Towing Trailers with LED Lights
- Q&A: Adapter for 2010 Mercedes-Benz GL450 Towing Trailer With LED Lighting to Avoid False Short Indicator
- Q&A: Recommended 7-Way To 7-Way Adapter For Towing Trailer With LED Lights
- Q&A: Are Brackets Included With Draw-Tite Ultra Frame Service Body Trailer Hitch 41990-16
- Q&A: Preventing Travel Trailer LED Lights From Flashing With 2011 Mercedes ML350
- Q&A: LED Lights on Trailer will not Work When Towed with 2008 Mercedes-Benz ML320CDi
- Shop: Curt Class V Universal Weld-on Receiver Hitch and Brackets with 10.865" Drop
- Shop: Class V Universal Weld-on Receiver Hitch and Brackets with 3" Drop
- Shop: Buyers Products Class 5 Service Body Hitch Receiver - 2"
- Shop: Buyers Products Class 5 Service Body Hitch Receiver - 2"
- Shop: Curt Class 5 Universal Weld-on Hitch w/ Brackets - 2" Receiver - 60" Wide
- Shop: Curt Class 5 Universal Weld-on Hitch w/ Brackets - 2" Receiver - 44" Wide
- Video: Review of CURT Trailer Brake Controller - Echo In-Line Wireless Proportional - C79DR
- Shop: Brake Controller
- Search Results: brake controller
- Video: Review of Diamond Lights - Load Resistors - DI34ZR
- Video: Review of Curt 7-Way LED Trailer Light Adapter - C57003
- Search Results: 20141
- Shop: Trailer Hitch
- Video: Choosing the Right Trailer Wiring
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Search Results: trailer brake controller
- Video: Choosing the Right Brake Controller
on Trailer Wiring
