Yaeil

Today, I put LED tail lights on my 04'A4.

BUT!! after changing that "Left/right rear light bulb" came up on dash board..
I guess system can not detect LED..sad... even though LED looks damn HOT! TT

Is there any way I can turn that off?

Should I go to Audi Service to turn that off and is that free even though my

warranty had been finished?

Help me out guys~

Black_RS4

The reason that happened I believe is because of the following: LED's take less voltage than conventional lights. Due to Audi having a system in place that detects the amount of current that the bulb draws, it throws an error, as the LED does not reach the lower limit of voltage draw for the correct size bulb that is in your factory location.

I'm not sure if the dealer can turn that warning off, but it's worth a shot. Also make sure you check with them that this modification does not void your warranty, because quite honestly dealers can be ****...

Yaeil

thx. if they dont do it, is it worth to buy ODB code reader from ebay? ;;

Black_RS4

you need a vag-com to do that kind of thing, and I'm not sure the hassle justifies the price of the vag-com... furthermore, i'm not even sure you can disable that feature to begin with...

25orsix24

Some "auto shops" sell resistors that you can install to comply with the "on-board" diagnostics, therefore no need to chanage your car's programming... we have seen these at a shop in Niagara Falls, New York. I think NAPA migh have those...

1move

iTrader: (1)

Go with the resistors. you can figure it out yourself, find the voltage going to the bulb and then the current, google Ohm's law which is R=E/I, which means Resistance= Voltage / Current, (do this for the factory bulb using a volt meter (make sure you are using it properly)The volt meter is connected in parallel and the ammeter(current reader) is connected in series on the + side) and this will give you the readings, than hook up the LED one do the same measurements, then do the calculations for both or let me know of measurements and I will give you the right resistor that will get rid of your fault code, and no you can not turn this of with a vag-com safely

Yaeil

Oh man, it sounds very complicated.. Then I should buy a volt meter and figure those out(I do not understand any of instructions)....graaahh
Is there any autoshop do this things for moi? I would like to go...haha..TT
LED looks so hot but the CHECKIN SIGN aint look good on my dashboard...@)#(*@)#(!*)

1move

iTrader: (1)

Where are you located? LoL Its pretty simple man, yes you need a volt meter.

Yaeil

not Simple to moi hahaha TT.... NEway livin' in DownTown of Toronto.

I will purchase THE volt meter from C.Tire tomorrow, but it will be sittin in my home until I figure out how to use it lolz

1move

iTrader: (1)

LOL, k Well here is how to connect it to check the voltage. You put the red wire on the positive side and the black on negative side if you reverse them the voltmeter will read a negative value. You need to turn the dial to 20V or less in DC (direct current).

As for the ammeter turn the dial to A or Amps and take one lead of the volt meter and put it into where the wire is supposed to go on the positive side (lightbulb), than take the other lead and put it to the wire where it is supposed to connect so essentially making it look something like this.

(Negative wire)................(Lightibulb)........+(ammeter )-.....................(Positive wire) this a series connection


as for the volt meter it will look something like this

(Negative wire)...........-............(Lightbulb).........+...............(p ositive wire)

on the - put the black wire and on the + put the red wire