DIY for Daytime Running Lights for C5 A6

**Asix** · 08-01-2008 01:49 PM

Hey guys. Has anybody done a DRL mod for their C5 A6?

What do i need and where do I get it? I looked in my headlight housing and I have a little piece that looks like I can pop out a hole toward the top of the hi-beam housing portion.

Thanks in advance guys!

**11move** · 08-01-2008 02:44 PM

Get a vag com and change the coding from USA to Canada and you have DRL's :) at least it is how it is for my A4

**Asix** · 08-01-2008 03:49 PM

Oh snap...now that sure would save time and money!

**04A6SLine** · 08-01-2008 05:59 PM

A4 and A6 codes are different.. good luck with it.. i got the Ebay Vagcom wire and still haven't trouble changing anything..

**11move** · 08-01-2008 11:05 PM

Originally Posted by 04A6SLine

A4 and A6 codes are different.. good luck with it.. i got the Ebay Vagcom wire and still haven't trouble changing anything..

Not in this case....

Go to Instrument Cluster Module 17

In there you will have this xx2xx: Country
Change the two to a 3 and you should be DRL Enabled :)

??xxx: Options
+01 = Larger Fuel Tank (80 liters for 8-Cylinder Quattro and S6)
+02 = Seatbelt Warning active
+04 = Tires for Allroad (MY 2002+)
+16 = Navigation System (w/o CAN Connection)
xx?xx: Country
0 = Germany
1 = Rest of World (Left Hand Drive)
2 = USA
3 = Canada
4 = Great Britain
5 = Japan (Left Hand Drive)
6 = Arabian States
7 = Australia and New Zealand
8 = Rest of World (Right Hand Drive)
9 = Japan (Right Hand Drive)
xxx??: Engine
40 = 4-Cylinder Diesel
42 = 4-Cylinder Gasoline
44 = 4-Cylinder Gasoline Turbo
60 = 6-Cylinder Diesel
62 = 6-Cylinder Gasoline
64 = 6-Cylinder Gasoline Turbo
83 = 8-Cylinder Gasoline

**Asix** · 08-02-2008 03:13 AM

wow nice post!!!! thanks man!!!

**Blange05** · 03-16-2010 07:38 PM

Very interesting, Asix, did this method work for you, and do you have factory HIDs" Also what year is your A6?

Thanks,
Brett

**BostonDriver** · 03-16-2010 10:01 PM

VAG COM does not work for C5 A6 running lights. Had to be hardwired.

**audifirst** · 03-17-2010 08:24 AM

That little hole is for city lights used in Europe, you can re-drill the hole, get city light harness with bulb plug from VW Golf MKIV, one wire is for ground and other connect to your DRL harness plug, you can have your city lights as DRL
however you will need to do some rewiring so the only city light is drl and rest not if this is what you are looking for

**Tamas** · 03-17-2010 08:37 AM

Originally Posted by audifirst

That little hole is for city lights used in Europe, you can re-drill the hole, get city light harness with bulb plug from VW Golf MKIV, one wire is for ground and other connect to your DRL harness plug, you can have your city lights as DRL
however you will need to do some rewiring so the only city light is drl and rest not if this is what you are looking for

yes please

**Blange05** · 03-17-2010 03:33 PM

Thanks guys,
I was hoping that the vagcom could simply activate the low beam as a drl (easily, like the key fob remote window up/down setting), but I suspected that the wiring would prevent that. I've heard of the drill out city light mod, and to be honest I don't like playing with the factory wiring, but thanks again.

**Thunderhammer** · 06-03-2011 10:08 AM

Howdy,

Do you happen to have instructions or a link to hardwire a C5 A6 to use the fogs as DRL? I have already done the fog parking light bridge mod, but I have had a couple dead batteries after leaving the light switch on. I'd just like the fog and park lights to turn off with the ignition...?

Thanks

**mithril** · 06-03-2011 11:17 AM

Originally Posted by Blange05

Thanks guys,
I was hoping that the vagcom could simply activate the low beam as a drl (easily, like the key fob remote window up/down setting), but I suspected that the wiring would prevent that. I've heard of the drill out city light mod, and to be honest I don't like playing with the factory wiring, but thanks again.

CDN DRL's are the fog lights (plus markers), not the low beams. My guess is that the VAG-COM mod does work but is being blocked (for lack of a better word) by the fact that fog light function is tied to the low beams in the US model cars.

**Batcave** · 08-22-2011 11:14 PM

I have a US C5 A6 that was imported into Canada and I have the fog log - DRL mod. I'm not sure how it was done, but it would probably be wiring around the light switch and/or ignition. From the ignition, you could connect a harness to the wire from the switch that illuminates the fogs. That's what I would do.

However, it looks like some others have done this on other models...

http://www.audizine.com/forum/showth...t-with-Fog-Mod

**scottyvee** · 07-26-2013 08:54 AM

Originally Posted by Thunderhammer

Howdy,

Do you happen to have instructions or a link to hardwire a C5 A6 to use the fogs as DRL? I have already done the fog parking light bridge mod, but I have had a couple dead batteries after leaving the light switch on. I'd just like the fog and park lights to turn off with the ignition...?

Thanks

I'm looking to do this VAG COM modification (fog parking light bridge mod) to my '05 Allroad. Do you have the instructions to do it? I've been searching but cannot find the steps for the C5 A6 and it's driving me nuts.

**V1nny** · 07-26-2013 09:14 AM

Originally Posted by scottyvee

I'm looking to do this VAG COM modification (fog parking light bridge mod) to my '05 Allroad. Do you have the instructions to do it? I've been searching but cannot find the steps for the C5 A6 and it's driving me nuts.

Instructions:
http://allroadfaq.com/downloads/mods/foglight_mod.pdf

I actually drilled my high beam reflector, and installed Cree 22 watt H1 LED with small projector lens there.
Connected with this relay:
http://www.ebay.com/itm/360394205189