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Expert Answers about Volkswagen Tiguan


  • Both Blinkers on With Wiring Harness 118811
  • It isn't the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118811 being bad (if that's what you were referencing by "the connector itself"); if that was the case nothing at all would be working as it's the module that would be going bad. When both blinkers go on at the same time, the issue is a bad ground. So on both your tow vehicle and trailer, make sure your grounds are attached to bare metal surfaces and free of any paint, dirt or corrosion. I'm guessing it's the...
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  • Will the Hitch Lock part # S64029 Stick Out Pretty Past Pin Hole of Hitch
  • As long as the 3 inches of the hitch pin that extend beyond the pin holes of your trailer hitch do not interfere with anything you would be totally fine. This is a pretty long hitch pin lock so what you described is pretty normal for people who use it. I attached a picture we got from a customer that shows it sticking pretty far out to the side of a hitch opening.
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  • Trailer Wiring Shows Constant Power to Right Turn Signal With Left Turn Signal On, 2009 VW Tiguan
  • It sounds like you may have connected some of the wires from the harness to the wrong wires on the vehicle. Because the wiring on a Volkswagen can get a little complex, this does happen from time to time. but not to worry. Using the circuit tester that came with the wiring harness, you can test the wires on the vehicle after disconnecting the wiring harness on the vehicle. In the instructions for # 119250KIT which I have linked as reference, you will need to follow the directions for a...
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  • Trailer Lights Not Working with 7- to 4-Way Adapter on a 2012 Volkswagen Tiguan
  • It sounds like you are using a 7 to 4-Way adapter in the factory trailer connector on your 2012 VW Tiguan. If the trailer has LED tail lights, you will need a special adapter, # C35FR. This adapter should allow the trailer lights to function properly.
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  • Troubleshooting Left Turn Signal Not Functioning on Trailer Wiring of 2014 Volkswagen Tiguan
  • First thing you should do at this point is test the 4-way of the wiring harness with a circuit tester part # 3808 for voltage on all of the right pins when the taillight signals are being applied. Just like in the video I attached. If the voltage checks out there but the trailer lights still don't function right then the problem is on the trailer wiring. That would mean that problem is either due to a ground issue or a short issue. Make sure that the trailer side connector are clean and...
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  • Troubleshooting 2nd Hand Cargo Box Locked With No Keys
  • On your second hand cargo box, there may be a number on the lock cylinder. If so, see if we have a replacement key using part THKEYN_ _ _ . For instance if the lock core reads 009, then you will use # THKEYN009 as the replacement key. If there is not a replacement key available or the lock core doesn't have a number, you may need to drill out the current lock and use a replacement like the Thule One-Key System Lock Cylinders - Qty 2 # TH450200 or the other style of lock # SR03807....
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  • Troubleshooting Constant Trailer Connector Replacements on 2016 Volkswagen Tiguan
  • The Curt T-Connector Vehicle Wiring Harness # CU26FR is a solid choice for wiring on your 2016 Volkswagen Tiguan since it uses the tees to trigger the trailer light functions but it pulls power directly from your battery via the included power lead. Whenever there are issues with wiring malfunctioning like this it's almost always a bad ground on either the tow vehicle or the trailer. You need to make sure both the Tiguan and your trailer have a ground connection that's secured to a clean,...
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  • Troubleshooting Curt Echo Brake Controller Not Working 2019 VW Tiguan and New Tear Trailer
  • It is very possible that your issue is that the power wire isn't connected to a power source that can provide enough amperage and that's the problem. I would assume that the fuse for this circuit would have blown by now and the controller wouldn't even power on or show in the app. I would use a circuit tester like part # PTW2992 to test the brake output of the controller when the manual override is activated. Or you should be able to hear a click a the wheels when you do this as well...
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  • Trailer Wiring Harness Not Working On a 2013 Volkswagen Tiguan
  • There is actually a plug-in style wiring harness available for your 2013 Volkswagen Tiguan, # 118675. Using this harness will prevent you from having to cut and splice wires. It is possible that you will need to follow a different installation method for the # 119250KIT harness but if you still have problems you can troubleshoot the harness. To troubleshoot your # 119250KIT harness, if there is power at the 4-Way and all the signals are correct AND the trailer has LED lights then you will...
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  • Troubleshooting Installation of Wiring Harness on 2011 VW Tiguan
  • You should take a look at your owner's manual to see if there are any trailer fuses and then take a look at your fuse box to see if you need to install any. If not, and you cannot get the Vehicle Wiring Harness with Installation Kit # 119250KIT to function on your 2011 VW Tiguan there are a number of troubleshooting steps you need to take. To determine the specific problem you will need to purchase a circuit tester if you do not have one - the very handy Cordless Circuit Tester # PTW2979...
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  • Troubleshooting T-One Vehicle Wiring Harness 4-Way Connector on a 2018 Volkswagen Tiguan
  • Have you tried testing the 4-Way connector of the (discontinued) T-One Vehicle Wiring Harness 118765 on your 2018 Volkswagen Tiguan? If you use a circuit tester # PTW2993 or a multimeter # PTW1714 on the T-One 4-Way, you can determine if the issue is on your vehicle side or trailer side. If on the vehicle side, try testing the wiring on the vehicle side of the ModuLite. If power is getting to the ModuLite but not coming out then the ModuLite is bad, and you need to replace the entire wiring...
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  • Troubleshooting Trailer Wiring Harness with Turn Signals Not Working On 2017 VW Tiguan
  • To confirm it is a controller module (circuit board) issue with harness # 118675, I recommend double checking your connectors to make sure there isn't a bent pin and the connections are tight and then making sure the ground connection is bare metal where connected. Then using a circuit tester like # PTW2992 you can confirm power is getting into the black box from the connections but not exiting it correctly. If it is receiving but not sending correctly then it is a faulty module.
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  • Troubleshooting Brakes on Pop-Up Camper
  • For starters, I would recommend doing some troubleshooting. Use a multimeter like part # PT89ZR and test the leads feeding the brake assembly magnets. Have a helper activate the manual braking switch on the controller, while you probe the wire. You should be getting approximately 12-volts at the brake magnet. The Nev-R-Adjust brake assemblies are known to click, make sure that they are installed on the correct side of the trailer. The # 23-469 should be installed on the right (passenger)...
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  • Troubleshooting Curt C13381 Not Wide Enough for 2021 Volkswagen Tiguan
  • No need to worry, your # C13381 hitch is likely bent a little from when it was shipped. The mounting brackets are made to flex a bit so this is not uncommon. Flexing them back into position will allow you to get the hitch on the outside of the frame rails and complete your installation. You can use a table vise, an open step, the floor, or any number of other methods to accomplish this. It doesn't sound like it flexed much based on that measurement you gave, but it wouldn't hurt to inspect...
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  • Troubleshooting Trailer Wiring Not Working with 2015 VW Tiguan
  • Since you installed the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118675 exactly as shown in the attached videos, I recommend testing the trailer functions at the 4-way without the trailer connected using a circuit tester like # PTW2993. I've attached a video to assist. If you are not getting the functions, I recommend first checking your ground connection to ensure you are getting a good ground. Often when one function works and others do not or if one function...
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  • Troubleshooting Curt T-Connector # C56403 With Power Always On Green Wire/Right Trailer Light
  • First you will want to use your Test Light # PTW2993 to test for power going into the Curt T-Connector # C56403 on your 2018 Volkswagen Tiguan. This will allow you to determine if the module is somehow getting a signal or if the module itself is defective. If you do not have power on the green wire going into the module but have power on the green wire coming out of the module you know the module is defective. If the green wire does have power you will want to check the connectors to...
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