Tiguan Trailer Hitch Wiring - Help Needed

[pistoncranky]

Once you've sorted out the CAN wires under the dash, and had the trailer module coded to the CAN gateway, everything should work correctly. There's a microswitch in the 13-pin round connector that's bolted to the towbar, that detirmines if a trailer is hooked up (electrically), and will disable the reak parking sensors, and display a trailer on the radio unit, if it's an RCD or RNS 510.

As for ESP function, I don't believe the ABS module is setup for trailer stablisation in this market.

That white plug, as you've figured out, is for auxilliary power to caravan or trailer accessories.

Thanks Umai, you've been very helpful.

I going to check if the other wiring loom in the box has got the right shaped connectors at the front end to fit the CAN connectors under the dash (they look ok) and cannibalise it to make my own Y cable to connect the trailer CAN line into the main bus. May as well make use of it unless anyone has a need for it but I doubt that. The rest of the wires will get used in other projects.
C

[BladeSlapper]

Hi Guys, sorry for not checking the thread and sharing more info, so heres the follow up.
I had the Heavy Duty Hayman Reese tower fitted by CarBars from Pakenham/Mornington. Excellent job and would highly recommend them.
It took about 2.5 hours to install.
Now, the wiring and coding....I still haven't had it done, and have had a false start or two, with people who think they can do it but can't.
Am currently waiting to get it into AudVolks in Oakleigh to hopefully wrap it up...

With regard to the 13 pin round plug, i left that and made up a flat 7 pin adapter lead that's attached to the towbar with the 13 pin connection in the boot.

Out of interest, the wiring and module is installed and connected (but not yet coded). If i plug a lighting connector into it, the brake lights and the tail lights work, but indicators do not. A friend of mine did exactly the same installation but on a Toureg with the same result pre coding..
(I've used the tow bar a couple of times with my Yakima hitch mount Bike carrier which has a home made LEDLight/numberplate bar)

[BladeSlapper]

Hi Guy's, Im back on the CANbus business...Too many projects on the go at once! I have located the foam covered connector(s) under the dash next to the fuse box, pulled them out and now need to know exactly which ones i join together....

Is it just the two wires that go into the blue plug that get joined?
Or,
Do they get added to the adjacent black connector?

If its just connecting the wires from the blue plug I can make a jumper or simply cut the plug off and twist them together in a splice..

Any advice welcome.

Cheers

[Umai Naa!!]

Yeah cut the blue plug off, and splice them into the other wires at the black plugs.

The correct VW procedure is to use red duraseal heat shrink butt connectors, rather than soldering, and definitely not scotch locks.

These are communication wires on Drivetrain CAN, so it's important that the job is done well. Ensure that orange/brown goes to orange/brown, and likewise with orange/green.

[pistoncranky]

Yeah cut the blue plug off, and splice them into the other wires at the black plugs.

The correct VW procedure is to use red duraseal heat shrink butt connectors, rather than soldering, and definitely not scotch locks.

These are communication wires on Drivetrain CAN, so it's important that the job is done well. Ensure that orange/brown goes to orange/brown, and likewise with orange/green.

I did some yoga up under the dashboard and solderered the orange green to the other O/G and same with the orange / brown.. requires a bit of patience and then put on some shrink wrap.

I didn't test it without coding it - I tried coding it using my OBD11 but I couldn't get any results.. very annoying so I took it to VW Village and they plugged in a VAG-Com and asked them to go straight to the Gateway Module (19) and select the Trailer Module (69) and tick the box. Lights all worked... but there is more coding to do because my reverse alarm still squeals when I reverse which it isn't supposed to if it coded properly. Still haven't sorted that yet and I don't know if the fog lamp disable also needs attention.

I get fault codes and a dash light when I plug in LED lamp trailers.

[Umai Naa!!]

Depends on what reverse sensors it has. If they're dealer fit, I believe there is some wiring trickery to sort out at the micro switch on the 13-pin plug cover to cancel them out. If it's factory-fitted and integrated into the radio unit, then yes, more coding needs to be done.

As for the fault codes with LED trailer lights, that's normal. The trailer control module doesn't support them, as LED lights on trailers weren't in fashion in Europe at the time.

[BladeSlapper]

Perfect, Thanks Umai Naa / Pistoncranky. Im heading in Saturday morning to do the coding, so I'll splice it in in the day or so..
Fingers crossed it all works as advertised!!
Thanks again

[BladeSlapper]

Success!

Well Mostly success..

Because I'm using LEDs the Lamp failure warning illuminates on the dash when I use the bike rack.
And, the reversing sensors are not disabled when the lights are plugged in..

I can live with that..

The coding worked easily and as advertised, Big thanks to Jason at AudVolks, Oakleigh. It took no time at all.

[kotbehemot]

Hi Guys.
Does anybody have photo of the wires that needs to be connected under the dash?
I have electrical diagram but cant find the proper connector.

[ian]

The three wire are up above the kick panel on the drivers side ,you need to slide the seat right back and lie on your back,
The plug had a foam rapping around it ,and there is very little room to work ,

Tiguan Trailer Hitch Wiring - Help Needed

[kotbehemot]

I found 3 plugs, 2 wires each in the foam rapping, near to obd port and J519 module. 2 of them are conneted. Third, the blue one, is not connected. Do you mean those (how can i post a photo here)?
How those plugs should be connected? Do you know their names on current flow diagram?

[ian]

Tiguan Trailer Hitch Wiring - Help Needed

[kotbehemot]

Ok. I know what has to be done now.

Shouldn't there be a kind o connector from VW to connect those 3 plugs without cutting them?

Do you know what are the names of those plugs? (I want to check it on current flow diagram, before i connect them -just to be on the safe side)


I think i found it on the diagram. Pin 7 and 8 from 12 pin socket, should go to J519 module, socket T52c, pins 15 and 16. They also connect to CAN low and CAN high (J533 pins 5 and 15). Will try to check it on the vehicle today.



Yep. As expected. Pins were for CAN low and CAN high. I had to cut blue'ish plug under the dash - couldnt find an adapter to connect all 3 plugs. After this operation, i was able to add trailer module to the CAN line (via vcds).

[AlexV]

Hi all,

I recently installed the trailer module (1K0 907 383F) in my 2012 Tiguan. I spliced the wires under the dash and coded it using VCDS.

I tested the input measurements of the trailer module using VCDS and it picks up LH turn, RH turn, brake etc. signals.

I don't have the wiring harness from the module to the trailer connector plug, so I was planning to make my own to a 7 pin flat connector. I do have the plastic connector with 10cm of cut wire which goes to the trailer connector plug socket on the module. My plan was to test the wires with a multimeter and splice accordingly. Unfortunately, while five cables give a reading of ~1.2v, two cables of 0.5v and one of 12v they don't fluctuate when a signal (LH turn etc.) is made.

Can anybody assist?

Regards,
Alex V

[MIG]

My Passat has a 1K0 907 383 F, so the wiring should match.

Check out page 300 onwards, J345 is the module's name.

Volkswagen Passat B7 - Wiring Diagrams -vw-passat-b7-wiring-diagrams-eng.pdf