Touareg: 2012 V6 FSI
Join Date: Dec 2015
Location: Cedar Mill, Oregon
Second Vehicle: is not a VW
Thanked 2 Times in 2 Posts
Installed hitch and electronics in my 2012 V6. I suspect your 2013 TDI is similar.
My Treg did not have the electronics installed. I installed the module in the aft starboard quarter panel, right where you found yours. On connecting my trailer, I found that turn signals worked, brake actuation worked, but brake lights did not even though 4-way flashers did. The Treg would indicate that a trailer light bulb was out, which is pretty cool. Yours appears to be missing the connection to the 7-way near the receiver; the EOM harness is awesome in that it includes a bulkhead gromet where the wires dive through from inside to outside, and it includes retention parts all the way to the 7-way.
My dealer offered to "code for towing" for 1.5 hours of labor, or $150; he did not exude confidence. My independent garage hooked up VAGCOM and did two things: 1) they told the gateway that the car was set up for towing, and b) they changed a "1" in block 69 (towing) to a "2". Cost $0.
After coding the "1" to a "2" all lights and functions work, including brake lights, and I'm happy. If the vehicle is factory configured for towing, the lift gate won't actuate when a trailer is connected. On my configuration the lift gate works when connected, and that's OK 'cause it doesn't collide with anything on my trailer.
I recommend that you buy a $13 tester to plug in to the 7-way. This will allow verification without needing the trailer. Do this first and find out if you have brake lights, turn lights, brake actuation, charge (12.9V) and running lights. If all that works, you're done. The common thing I've read here is that brake lights don't work 'cause the car thinks it has a European trailer, so you have to inform the car that it has a North American trailer. That's the key coding change that needs to be made.
BTW - My 2012 is a "7P" chassis, and that's what's at the start of the P/N's implying the hitch and wiring harness is for the 7P chassis.
2012 Touareg V6 FSI lux
2009 BMW 535i xDrive
2007 TrailManor 3124KB