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I got my lights mounted on my trailer today and took a short trip. I had to recode all associated modules to “German” instead of USA. Once I hooked up the trailer and plugged in the lights, the car “knows” it has a trailer attached. It disables “efficiency” mode, sets the air suspension for...

I just wanted to add this video as an update to this thread. Lights are already mounted on my trailer and I’ll post another video soon.

I just wanted to post this video to celebrate my success! It took forever and a day to get these lights and I was finally able to test my Westfalia trailer control module and on my car. If you want to go through the trouble, it’s well worth the effort.

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I did not. I certainly will. Can I pull this relay to see if my mirror electronics go off or my parasitic load goes away?

The rear view mirror is definitely fused. I can pull the 5A fuse in the trunk associated with the rear view mirror and the power goes off. No compass or green light auto dimming indicator with the fuse removed. With the fuse pulled, I do get an error indicating that my headlight assist...

I realize that this may be a long shot but I am wondering if anyone has experienced an issue where your rear view mirror electrics seem to stay on after the car is switched off. The compass stays on, as does the green auto dimming indicator. My wife and I have identical A8L's and her car seems...

So, after a lot of work installing a factory Westfalia hitch and the factory wiring and trailer control module, I have one more issue to work out. Those interested in seeing my hitch installation can check this thread. Audi A8 L D4 hitch Going with a 100% euro hitch, I have discovered that I...

@Dana @Uwe problem is solved. Just so you know, and for the benefit of others who may have this issue, I recoded the trailer module using the variant suggested and checked the “soft reset” block before “Do It” and the lights cleared and the errors went away. I’m happy.

I fully understand and wouldn’t want to put you in that situation @Uwe. I will refrain from discussing this topic and focus on the original issue. Thanks!

@Dana thank you for your help. I know that purchasing original Ross Tech hardware doesn’t automatically include this level of assistance and support. I really appreciate you and @Uwe being dedicated to supporting customers like me. I’ll try what you’ve suggested and will report back.

I forgot to add that I no longer have a xxx. If I could remove that controller from the canbus, that would be helpful. All fuses are good. Just checked those.

Here's the latest scan... Tuesday,27,August,2024,14:49:32:51923 VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64 VCDS Version: 24.7.0.0 (x64) HEX-V2 CB: 0.4643.4 Data version: 20240715 DS356.3 www.Ross-Tech.com VIN: WAURMAFD4EN004264 License Plate: Chassis Type: FD-AU64...

@Dana here is a scan from last night. I think the latest one that I did with the errors. Monday,26,August,2024,19:33:00:51923 VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64 VCDS Version: 24.7.0.0 (x64) HEX-V2 CB: 0.4643.4 Data version: 20240715 DS356.3 www.Ross-Tech.com...

I believe that I fouled up... I thought that it would be a good idea to plug an Amazon 13-pin to US flat four adapter into my car and see if it would work with my trailer. The car certainly does not like the LED lights on the trailer and I now have ACC disabled and error warnings for each...

@Uwe sorry for the delay in posting this autoscan. I was tied up for several days working on some other projects. I think that I have most of the coding correct but maybe not everything. Any help would be appreciated. Sunday,11,August,2024,12:08:32:51923 VCDS -- Windows Based VAG/VAS...

Will do Uwe. I’ll have to wait until tomorrow before I can do it.

I’ve searched the archives and cannot find exact instructions for my 20!4 A8 L. I have the 3.0 TDI. I sure would appreciate any assistance. Half of my battle was getting the actual German hitch and the vehicle specific “Elektro Satz” sent to me. The parts were not cheap and neither was the...

Uwe, 061 = 12887 062 = 65535 thx, Joe

Here's an autoscan as requested... Sunday,17,July,2022,15:54:42:51923 VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64 VCDS Version: 22.3.1.4 (x64) HEX-V2 CB: 0.4615.4 Data version: 20220407 DS337.0 www.Ross-Tech.com VIN: WAURMAFDXEN002924 License Plate: Chassis Type...