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i know another stinking led ?

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Old 12-03-2013, 08:25 AM   #1
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Default i know another stinking led ?

I have changed out my daytime running bulbs and also the parking light bulbs. replaced them with leds from superbright leds the canbus kind. still getting error codes are there any bulbs available from anywhere that will work and not throw codes it is a 2006 a8. I really like the look of the leds
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Old 12-03-2013, 08:50 AM   #2
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There is no such thing as CANBUS bulbs.
You have to recode for LED DRLs and then join the +ve from the sidelights to the +ve on the DRLs, then they don't make error codes and dim at night like the originals.

http://forum.a8parts.co.uk/showthread.php?t=7192
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Old 12-03-2013, 09:24 AM   #3
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is there no way to just replace the bulb to not get the error. I cannot afford a vag com at the moment to do this plan on getting one in the spring.
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Old 12-03-2013, 10:09 AM   #4
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Default Do it right and enjoy the LEDs

This is how I did mine, no codes, no burn out, no warning, 6 months already. You're right, there is no way to just replace bulbs and NOT getting errors.

Cheers,

Louis
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Old 12-03-2013, 01:25 PM   #5
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I guess I must be a dumb*** I have no clue what you are talking about doing with all that the ptc rload. do you care to elaborate for me step by step thx
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Old 12-03-2013, 02:35 PM   #6
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Originally Posted by wildwilly1 View Post
I guess I must be a dumb*** I have no clue what you are talking about doing with all that the ptc rload. do you care to elaborate for me step by step thx
PTC is just a little reset-able fuse - You can search and find the cheap ones, I think radio shack may have them.
Every PTC has its own specs, when the current is over the designed specs, it will get hot and pop open. The good thing is when the voltage is not there, it's just a fuse = .5 to 3 ohms just like a resistant of a tungsten bulb.
In the circuit I'd drawn, 3 things are connected parallel, the PTC, Rload and the LED bulb.
Here is how a tungsten bulb resistance behaves, cold = 3ohms, hot = 30-60 ohm, so when no voltage applies, PTC sits as .5-3ohms (the sensor detects that and happy), then when the light switch turns on, PTC gets hot 12.5v/3ohms = 4A current over the design current of .1-.2A, and pops open (high resistance), at this time the Rload of 30-35ohm takes over maintain the 250mA to your LED, the sensor is happy and your LEDs are on without over current also.
As soon as the switch is off, the PTC reset and becomes a fuse again (.5-3ohms).

Parallel resistance of all three components is less than the lowest resistance which is the PTC//Rload//LED.

The sensor sees PTC resistance when cold, when it's open (hot), it sees the Rload//LED ~ Rload (30-35ohms) because the LED resistance is about 80 ohms. The reason it doesn't throw a code even if LED is burned out, because it always sees RLoad 30-35ohms.

For 5w parking bulb 2825 I used RLoad = 60 ohms 10W.
For 26w DRL bulb 1156 I used Rload = 35 ohms 50W.
For License plate LEDS, I don't use Rload, just PTC.

"Current and resistance
The actual resistance of the filament is temperature-dependent. The cold resistance of tungsten-filament lamps is about 1/15 the hot-filament resistance when the lamp is operating. For example, a 100-watt, 120-volt lamp has a resistance of 144 ohms when lit, but the cold resistance is much lower (about 9.5 ohms)"

I don't know if it makes sense, but that's how the circuit works.

Cheers,

Louis
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Last edited by ltooz_a6_a8_q7; 12-03-2013 at 02:53 PM.
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Old 12-04-2013, 10:58 AM   #7
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something like this http://store.ijdmtoy.com/Euro-Audi-H...=Y&Search=Audi
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Old 12-04-2013, 01:22 PM   #8
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Default half of the circuit - some work - some don't - throw a dice

Quote:
Originally Posted by wildwilly1 View Post
So, the Rload they use must be very small 3-6ohms and it better be mounted to the car frame for heat dissipation. Ask them how many ohms those resistors are, if they're less than 5 ohms, chances are warning light will come on after being on for a while because it draws too much current 12.5v/5 > 2A, again P = VI = 25W for the 5w & 25w bulbs- the system will think there is a short between terminals. If they're more than 6 ohms, the warning will come up as an open because it's greater .5-3 ohms.

There is no way of getting away from my circuit.

Cheers,

Louis
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Old 12-04-2013, 03:11 PM   #9
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do you have anything showing how to do this on what to buy where to buy and how to hook everything up pics would be great
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Old 12-04-2013, 06:05 PM   #10
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I got sick of dealing with it. I just bought Polarg M-4 B1 Hybrid Hyper White 194 Bulb | 12v 5w which are basically the same color range. No more issues. No more LEDs in the DRL location. All others are LEDs on the exterior and those show no errors. Seems like a lot of work and I got sick of dealing with it. So I just got a regular bulb that was whiter and brighter than the ugly halogen.
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Old 12-04-2013, 08:51 PM   #11
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Default what bulbs do you want to replace?

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do you have anything showing how to do this on what to buy where to buy and how to hook everything up pics would be great
I can get a hold of a few PTCs and Rloads, tell me what bulbs you want to replace, I make a set for you, just have to splice to the bulb wires using speaker wires. Run the wires to the metal box and never have to worry about the LEDS ever again. I should drill a hole on the plastic cover and run wires through a rubber grommet, but I didn't have time and it worked fine even being pinched.

Click the image to open in full size.
Click the image to open in full size.

Cheers,

Louis
PS: pick up the wife today at work...
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Last edited by ltooz_a6_a8_q7; 12-04-2013 at 09:35 PM.
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Old 12-05-2013, 02:13 AM   #12
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I have changed the drls and the small parking lights that mount right beside them if you pm me and help me get this fixed I will pay you for your trouble and whatever material we need thank you much
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Old 12-05-2013, 08:46 AM   #13
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Quote:
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I have changed the drls and the small parking lights that mount right beside them if you pm me and help me get this fixed I will pay you for your trouble and whatever material we need thank you much
Show me your DRL & Parking, yours must be 06 because 05 lights are different. Post the pictures of your bulbs here, either on the car or outside.

It takes time and work to install these, make sure the bulbs are not the cheapo with tons of little LEDs on them like Mishar's DRL. Avoid millions of tiny SMD LEDS mounted on a bulb, the brightness comes from Quality LEDS and not the Quantity of LEDS, it doesn't work.

These 2 types I bought from these guys have been working for months without a hitch. They're inexpensive and proven working.

for parking light, I use these T10-194-5W.
for DRL I use these 1156 7.5W.

Click the image to open in full size.
Click the image to open in full size.

The only problem is they take a few weeks to ship to the US.

You will need:

4-PTCs - 250mA = $3 x 4 = $12.
2-Rload 50-60 ohm 5w for parking bulbs = $2.5x2 = $5.
2-Rload 25-35 ohm 50W for DRL bulbs = $4 x 2 = $8.

I'll solder the PTCs and Rloads with stripped wires, all you do is to splice them to your socket wires.

I run the wire from the driver side to the box - passenger side.
The reason for doing this is if I need to change the PTC or RLoad, I don't have to mess around with the light assembly, and if anything happens, it's isolated to a metal box, NO FIRES :-) I'm just a careful/paranoid guy.

Click the image to open in full size.
Click the image to open in full size.

I hate shipping, I do everything online these days. Shipping these with USPS is about $5-7.

Again, I do this for fun and help people in the forum, I'll test and make sure they work and I don't send untested stuff. Please don't ask for money back or complain about the failure due to operator errors. If they work for me, they should work for you, I will help to get your LED system work just like mine (like it never exists).

Cheers,

Louis
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Old 12-05-2013, 10:04 AM   #14
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here you go and yes it is an 06
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Old 12-05-2013, 10:15 AM   #15
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Default Those LEDS look scary... Just as I thought.

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here you go and yes it is an 06
Anyhow, if they're on and work for you is fine. I'll start on it today and you may have them in a few days. I'll see if I still have some speakers wires laying around, I know I used up the last roll. Do you have speaker wires 16-18 gauge? The smaller number is "fatter" but minimum is 18.

If you have the speaker wires, I'll just make the PTC and Rload for you.

Cheers,

Louis
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Old 12-05-2013, 10:22 AM   #16
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yes I have some 18 wire red and black its not speaker wire though.the leds are on now and working fine just the stupid error codes do you want me to send you some cash.
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Old 12-05-2013, 12:32 PM   #17
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yes I have some 18 wire red and black its not speaker wire though.the leds are on now and working fine just the stupid error codes do you want me to send you some cash.
Paypal me as friend when it's done. So, you know how to splice and run the wires to the metal box right? Or do I need to send you the splicers too?

Cheers,

Louis
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Old 12-05-2013, 01:14 PM   #18
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probably just send me everything and I will pay you that way I know everything is correct. do you know what this will be $
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Old 12-05-2013, 03:26 PM   #19
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Default Don't worry about the money, the work is more important!!!

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probably just send me everything and I will pay you that way I know everything is correct. do you know what this will be $
I don't know if I have all 5 splicers, but you can get them here cheap or any auto part store, even home depot or Lowes.

I got the circuits for Parking Light done. I have to get the resistors for the DRL.

Here are your parking light circuit tested.


Are you really worried about the cost or the work that needs to be done? I already listed everything out for you already. Just add them up.

Why don't we do this, I'll ship them to you for Christmas, after you install them correctly, if you like it, pay whatever you feel, FAIR?

It's my Christmas present to you.

Cheers,

Louis
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Last edited by ltooz_a6_a8_q7; 12-05-2013 at 03:35 PM.
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Old 12-06-2013, 01:55 AM   #20
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sounds good to me looking forward to getting them hooked up. if you could send some instructions on how to install everything I would really appreciate it.i will take care of you thank you very much
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Old 12-06-2013, 01:55 AM
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