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I installed an aftermarket head unit almost immediately when I got the car, so that I could use CarPlay. I stream audio 99% of the time, and the only radio station I listen to is NPR - and even that is rare. That station doesn’t have great reception in my RS4 despite working fine in every other car ...

As the subject states - I get an intermittent warning on the dash about my right headlight when it's above about 80F outside. The error randomly pops up, goes away, and then pops up again while I'm driving. But...if I actually turn on the headlights, the error disappears completely as long as they'r...

Updated original post to show correct resistor for right fog light in image.

Updated original post to include modification for LED fog lights. I haven't tried this mod, so if somebody does - please let me know if it works.

WoW !! .Well done for having an indepth look into this . Does this BCM control the rear number plate lights from here aswell ? They seem to cause issues too when swapping to Leds bulbs . As I now note in my modified original post, I think that changing resistor (1) in the parking brake mod will all...

Swapped out the 20kohm for 30.1kohm, and no errors. Of course, I didn't have any with the 20kohm for the rest of this evening after the first one....I suspect that I got the first one because the board was cold after sitting all day. So it was really close to working/failing. 30.1k should work no pr...

After two days (and nights) of driving around with the parking light mod in place, I got an error for the right light when I started the car this evening. Went to the store, and when I started the car after shopping, there was no error. Since this is clearly marginal on failing, I’m going to change ...

Brooner wrote: ↑

Mon Feb 08, 2021 4:46 pm

i used PAA bulbs not LED but give a nice white light so cleans up the front headlights

Oh wow - those do look nice. And they don't require any modification, which is definitely a bonus.

I've updated my original post to include the modifications for using LED parking lights, which I now have working on my RS4. Okay sounds good then. Read your post and I’m just wondering what are the resistors you ordered for the parking lights etc so I can order them too. The 0805 resistors look ph...

I've updated my original post to include the modifications for using LED parking lights, which I now have working on my RS4.

Apologies for the late reply, here: Another few questions... so what would happen if you put the incandescent bulbs in the drls with the ecu resistor mod? Do you think you would fry the ecu? And with the parking lights does changing the resistor work on the uk/European models and for a saloon? I don...

I've been running with this modification and LED DRLs since I made the original post, and haven't ever seen any errors on the dash. So nothing about driving or using the car has been any different. If I run a VCDS scan, I get the fault "01794 - Control Module - Incorrect Chassis (VIN) Number " - whi...

Excellent. Do let me know if others have success with this, so I'll know that I didn't just get luck somehow. I've been running with DRLs this way for a month so far, and no problems. I'll be changing out the parking lights some time in the next couple of weeks, and will report on whether that porti...

Do you still get a bulb out warning when one of the DRLs fails ie. have you checked by removing one of the bulbs? Cheers Mike I haven't tried - but I'm assuming that it will still let you know if one dies completely. All I've done is make the load look bigger than it is - but 10 x zero is still zero.

It's worth noting that while the DRL connectivity appears to be consistent throughout the 1000+ GPS of wiring diagrams I have, the parking light connectivity varies. I think the difference is in the Avant, or North America vs the rest of the world - I'm not sure. I haven't yet figured out exactly wh...