Expert Answers about Mercedes-Benz GL-Class
- Troubleshooting MaxxAir 4751KS Vent Lid Not Opening And Fan Running All The Time.
- Based on the issue you are having, Yes. A bad circuit board can cause all kinds of weird issues like your fan running all the time and the vent lid not opening.
Since you have the MaxxAir 4751KS you will need the replacement circuit board # MA10A04751KS.
I included a video of the # MA10A04751KS for you to take a look at.
view full answer... - Adapter For A 2010 Mercedes-Benz GL Class With Lamp Out Sensors Towing A Trailer With LED Lights
- You are correct, the 7-Way to 5-Way/4-Way Trailer Adapter for Vehicles with Lamp-Out Sensors Towing Trailers with LEDs # C35FR is indeed what you need, and is designed to alleviate the issue you're having towing your trailer with your 2010 Mercedes Benz GL Class with lamp-out sensors.
This adapter will plug into a 7-way connector on the vehicle and the 5-way or 4-way flat connector on your trailer.
view full answer... - Trailer Brakes Lock Up at Low Speeds With Any Tow Vehicle and Any Brake Controller
- The first thing I would look at is the adjustment of the brakes and see if backing them off a bit helps with the issue you're having, assuming that they're manually adjusting brakes. You'll want to use something like the Brake Adjustment Spoon for Drum Brakes # W80630 to back them off a bit; I've also linked our help article on brake adjustments for you to use as a reference if you're not familiar with the process.
I recommend starting with that and seeing how the performance changes....
view full answer... - Troubleshooting Curt Echo Brake Controller Not Powering Up on 2012 Mercedes-Benz GL550
- It may be necessary to also plug in your trailer to the Echo # C51180 so your 2012 Mercedes-Benz GL550 sends 12V power back to the trailer, which in turn powers on the Echo.
Each vehicle is different when it comes to sending 12V power back to the 7-Way connection so sometimes it takes playing around with the setup to get that power. If you still don't get power to the Echo when your trailer is plugged in then I recommend plugging the trailer straight into the 7-Way to see if the issue...
view full answer... - Mercedes GL-Class Does Not Work with a Trailer with LED Taillights
- Mercedes vehicles do have problems with LED trailer lights. Fortunately there are special adapters that create more current draw that will allow the affected vehicles to tow a trailer with LED lights and not have that bulb out sensor issue. Since you have a 7-Way wiring harness on the Mercedes you can use the 7-Way to 7-Way adapter, # 20142 or the 7-Way to 4- and 5-Way adapter # C35FR.
With the adapter you will be able to tow your trailer with your 2011 Mercedes without a problem. The...
view full answer... - LED Trailer Tail Lights Not Working when Connected to a 2011 Mercedes GL550
- On many German vehicles such as your 2011 Mercedes GL550 there is a bulb out sensor error that occurs when a trailer with LED lights is connected to the vehicle. This is because the LED lights draw such a small amount of power the vehicle computer thinks there is a bulb out and won't light the trailer lights.
There are adapters designed to correct this problem by using load resistors to draw more power so the system will function normally. You can use adapter # C35FR. It plugs into a 7-Way...
view full answer... - Troubleshooting 7 Way to 4 Pole Adapter for 2008 Mercedes-Benz GL450
- You will need part # C35FR. This adapter is recommended with most German vehicles, especially if you are pulling a trailer with LED lights.
This adapter will plug into your factor 7 way on your tow vehicle and allow you to plug in back here either a 4 way or a 5 way connector on a trailer. The adapter has built in load resistors that create more draw.
view full answer... - Will Prodigy P2 Brake Controller Kill Battery of Vehicel
- The Prodigy P2 part # 90885 does go into a sleep mode that does not draw what you mentioned. It would not kill the battery of your Mercedes faster. It sounds like your old controller was malfunctioning and not going into sleep mode properly.
view full answer... - How To Get A Separate Wire System On A 2011 Mercedes- Benz GL450 To Work On A Trailer 2 Wire System
- It sounds like your trailer lights are a combined system and your vehicle lights are separate. Check your 2011 Mecedes-Benz G Class and see if the brake and turn signals are separate. The 2010 has separate taillight functions. This means that the brake, turn, and running light signals run on separate wires. If the trailer is combined that means that the right side wire, which is normally green, would have both the brake and turn signal running on one wire. Same would be for the left side...
view full answer... - Pairing Problems with a Tekonsha RF Prodigy Brake Controller and a 2008 Mercedes GL450
- I attached installation instructions that I checked out and it looks like you need to do the following steps:
1. Connect trailer to tow vehicle
2. Plug the Power Module 7-Way cable into the tow vehicle
3. The trailer 7-way must be disconnected from the power module
4. Start the vehicle engine, or sometimes you will only have to have the key on (try both since you are having problems)
5. Plug the remote hand held unit into an auxiliary power source within reach of you
6. Turn the power...
view full answer... - There Power Light On the Curt Echo Has Stopped Working on a 2016 Mercedes GL350
- Congrats on your daughter winning first place and the Wild Card entrance to the National Barrel Race Championships! I definitely want to make sure you are up and running so you can continue her on her winning streak, so lets get into it.
With that said, there is one thing to double check before the more intense stuff. That being, if the trailer was not plugged into Echo # C51180 after it was plugged into your vehicle, there may not have been enough load for the vehicle to recognize a trailer....
view full answer... - Trailer Lights Not Working on a 2008 Mercedes-Benz GL320 With ModuLite Ultra Protector 119192
- The ModuLite Ultra Protector Wiring Harness w/ Integrated Circuit and Overload Protection # 119192 has a re-settable short circuit and overload protection built in that protects itself and your 2008 Mercedes-Benz GL320 from electrical shorts and mis-wiring problems. This means that it will shut itself off and restart instead of allowing a fuse to blow.
Since you have tested the functions on 7-Way of your GL320 and they seem to all be operating properly the problem is most likely on your...
view full answer... - LED Trailer Tail Lights Will Not Work when Connected to a 2009 Mercedes GL550 with Factory 7-Way
- 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...
view full answer... - Troubleshooting Produigy RF Brake Controller On 2012 Mercedes GL450 Showing NC On Display
- There can be a couple things wrong causing the nc code on your prodigy RF, part # TK94FR.
The first thing you want to do is set the gain knob on zero. If it flashes with a 00 on the display, the vehicle is paired, and there is a problem with the wiring on the trailer. Check for corrosion, broken wires or bad grounds and repair as needed.
If it does not flash 00 then there may be a bad fuse or relay on the vehicle. You can check those out and replace as needed.
view full answer... - Trailer with Incandescent Lights Hyper Flash when Connected to 2012 Mercedes GL450
- That is unusual behavior for incandescent lights. It might be a result of a burned out bulb, either on the trailer or the vehicle, because that is the only time I have heard of hyper flashing with incandescent lights.
Usually on German vehicles such as your 2012 Mercedes GL450 there can be issues if the trailer has LED lights because the LED lights do not draw enough power and it confuses the vehicle. The fix is to add more load by using a special adapter, which it sounds like you are...
view full answer... - Trailer Lights Not Working Using 4- to 7-Way Adapter on a 2012 Mercedes GL450
- If the trailer has LED lights then the issue isn't the adapter or the trailer. It is the vehicle. The 2012 Mercedes GL450 and other German vehicles do not work well with trailers that have LED lights. This is because LED lights do not draw enough power for the tow package on the vehicle to recognize them. Usually this is accompanied by a bulb out sensor light in the vehicle.
The fix is to use a special adapter such as # C35FR. Or, if this is the adapter you are using then adding load resistors...
view full answer... - Flashing Trailer Lights with a 2008 Mercedes GL450 with Factory Tow Package
- It sounds as if you have the trailer ruled out as the problem. I would recommend you check the ground connection on the trailer, to make sure it is connected securely to clean metal, so you eliminate that as a potential problem. I would then look at the connector on the vehicle. Try using a tester, part # C73NR to check if all circuits are functioning. If you find a problem at the connector, since the tow package is factory, not aftermarket, I would recommend you check with your Mercedes dealer.
view full answer... - Troubleshooting LED Utility Trailer Lighting on a 2011 Mercedes-Benz GL450
- Good news, you are correct in that the Curt # C35FR adapter will fix your 2011 Mercedes-Benz GL450 to work with your LED trailer lights. Some makes of cars are more sensitive to the LEDs and this adapter contains a resister that's needed to accommodate that sensitivity.
With the # C35FR adapter it will end up taking you from a 7-way to a 4-way, but if your trailer is a 7-way plug I'd recommend the # C57003. The Curt adapter has the same resister but allows you to still have that 7-way...
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