2005-Current Volkswagen Touareg, Audi, or Porsche Cayenne
Ian M.
2/23/2022
I am not quite confident with the additional relay when installing a RedArc tow pro elite since the keep alive voltage of the hot battery ensures that the calibration function remains in memory. Any removal of that keep alive voltage means that a recalibration is required after each engine shutdown. Based on that is it not counter productive to install a relay?
Les D.
2/23/2022
The black wire at the controller is from a constant source and will ensure programming is maintained. The additional relay is connected to the brake pedal switch. You will need this relay for your system to function.
Jt
8/5/2021
I see that this bulletin is for a Tekosha brand controller. The controller I'm looking at is a Redarc one. Is this wiring fix still needed? 2012 Touareg TDI with factory tow package. Thanks.
Victoria B.
8/12/2021
Yes, you will still need additional components to install a Redarc controller in your 2012 Touareg. I have linked the page showing all of the brake controllers for your Touareg - which also shows an "Installation Notes" section to let you know which controllers require additional parts and which don't. That section will also let you know what the VW part numbers are.
Marc H.
3/1/2021
The instructions about the relay are helpful, but: a. Where would I find/buy a 12V, normally open relay? Is there a part number to look for? b. How do I install a 5 amp fuse in-line? c. Where would I find/buy a 5 amp in-line fuse? s there a part number to look for? d. How/where do I find a 12V source to connect the relay to? e. Are there other connectors I'd need to install the 5 amp fuse or to connect to a 12V source? If so, what are those parts and where do I find/buy them? Thanks for the help and your patience.
Jon G.
3/4/2021
a. You would find a normally open relay at an auto parts store.
b. To install an in-line fuse you would use something similar to part # SWC9545. It would just be in place of some of that 12 gauge wire.
c. We have a mini fuse kit as part # PT62FR that you could pair with the part above to accomplish this.
d. Usually a 12V power source that is hot all the time can be found with your cigarette plug or if you have an accessory outlet in your vehicle. Otherwise you'll just need to use a circuit tester to see which wire is hot all of the time.
e. You'll need 12 Gauge Butt Connectors # DW05745-5 as well as a ring terminal, part # 44-5310A or # 44-5356A, to connect to your battery.
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Terry P.
4/5/2022
Hey there, recently installed a Curt Triflex controller on my VW TDI attached to the factory harness. As soon as the trailer is plugged into the vehicle, the Triflex begins clicking non-stop and the display flashes. Does this brake controller also need the relay installed? Called support at Curt -- they had me run a test via a test light that showed the brake controller is working fine without the trailer attached.....