DIY LED Reverse Light

[Mrav]

Amen!

the sexiest reverse lights go to the Porsche Cayenne. They're a row of LED's, that look similar to our DRL's but straight, and when you put the car in reverse, all other lights in the back turn off so all you see at night are the white LEDs. So beautiful

[Liquid Smoke]

the sexiest reverse lights go to the Porsche Cayenne. They're a row of LED's, that look similar to our DRL's but straight, and when you put the car in reverse, all other lights in the back turn off so all you see at night are the white LEDs. So beautiful

damn that sounds nice! cant find any pics on google though, is it just on the new ones?

[Jmstrag]

i might have to test these out

if you do end up trying them out please post the results. ive been wanting to try these out as well but the original poster hasnt answered any questions.....dont wanna waste 50-60 bucks for nothing if they end of throwing errors

[Lloydeezy E]

if you do end up trying them out please post the results. ive been wanting to try these out as well but the original poster hasnt answered any questions.....dont wanna waste 50-60 bucks for nothing if they end of throwing errors

i'll be sure to. my order should be in either today or tomorrow, so i should have the pictures and results up by sunday (tuesday the latest)

[Lloydeezy E]

the sexiest reverse lights go to the Porsche Cayenne. They're a row of LED's, that look similar to our DRL's but straight, and when you put the car in reverse, all other lights in the back turn off so all you see at night are the white LEDs. So beautiful

I really need to see this

[Mrav]

I can't find a picture unfortunately. I wonder if that was a mod that the owner had made.

[Lloydeezy E]

it's all good. i was trying to find youtube videos of it but no luck =(

[Lloydeezy E]

got them in today. tried it. failed.

[Mrav]

it's all good. i was trying to find youtube videos of it but no luck =(

Yeah, definitely a mod. but oh so sexy.


And why didn't the reverse lights work?

[Lloydeezy E]

Yeah, definitely a mod. but oh so sexy.


And why didn't the reverse lights work?

i got error codes as soon as i put the car in reverse.

[Mrav]

Well shit. Maybe you need a resistor somewhere in the circuit? I don't know.

Thanks for trying though.

[Jmstrag]

i got error codes as soon as i put the car in reverse.

i knew they looked too good to be true....i dunno what the OP was talking about

[Jmstrag]

http://store.ijdmtoy.com/Error-Free-...led-sku318.htm

A new error free bulb has been released....i think im gonna order a set to try out

[TDIaholic]

Stupified, You can get that same Q5 CREE bulb on ebay for 1/3 of the price in your link.

[Jmstrag]

Stupified, You can get that same Q5 CREE bulb on ebay for 1/3 of the price in your link.

They're pretty much the same price on ebay. At least the error canceling ones are... There's various different ones

[Mrav]

Either way, I'd love to see a picture! Either before-after or with just one bulb changed.

Thanks Stupified

[cnoiseau]

This is my first post (ever) guys, so be gentle.
I've tried the iJDMToy "Error Free" bulbs with no luck. I tried rotating the bulbs in case polarity was an issue, and followed all of their troubleshooting advice, but to no avail.
I've ordered a set of Lumens 194CW 9-LED 194/921 Bulbs from CARid which are also supposed to be error-free. I was guaranteed a hassle-free return by my sales associate if they don't work, so I'll let you know how it goes...

EDIT 2/28/13: No luck with the above stated Lumens bulbs, either. The brightness and color are both great, but the errors still come up once you drop into reverse. I have now ordered a set of V-LEDs 8W 921 Reverse Lights. I'm very familiar with the color and brightness of V-LEDs and I'm hoping that 8W will be enough draw to overcome the bulb-out warnings. If not, I may try to wire in some 1W or 2W resistors just so I can keep them without the errors. Otherwise, the search will continue...

[awhk82]

I have disabled the reverse light bulb error check with VAGCOM. Now running LED bulbs without any issue.

Here are the steps:
Module 46 Central Convenience > Security Access 16 > 16017
Adaption 10 > Channel 181 > Convert your decimal number to binary (for example my default number in decimal is 65535, converted to binary = 1111111111111111), then change bit 10 and 11 from 1 to 0 (my new binary value becomes 1111001111111111, which is 62463 in decimal) > Enter the new binary value > Test > Save

[Jmstrag]

I have disabled the reverse light bulb error check with VAGCOM. Now running LED bulbs without any issue.

Here are the steps:
Module 46 Central Convenience > Security Access 16 > 16017
Adaption 10 > Channel 181 > Convert your decimal number to binary (for example my default number in decimal is 65535, converted to binary = 1111111111111111), then change bit 10 and 11 from 1 to 0 (my new binary value becomes 1111001111111111, which is 62463 in decimal) > Enter the new binary value > Test > Save

WOW! You figured out a way to disable it! Thank you im def gonna try this out tonight. Do you know if this just disables the reverse bulbs or does it disable the bulb out warning for all the bulbs on the car?

[Lloydeezy E]

^^i will have to try this as well

[awhk82]

WOW! You figured out a way to disable it! Thank you im def gonna try this out tonight. Do you know if this just disables the reverse bulbs or does it disable the bulb out warning for all the bulbs on the car?

This disable the bulb out warning of the reverse bulbs only.

[dracolnyte]

howd you figure that out?

[awhk82]

howd you figure that out?

Looking at German forums.

[Jmstrag]

I have disabled the reverse light bulb error check with VAGCOM. Now running LED bulbs without any issue.

Here are the steps:
Module 46 Central Convenience > Security Access 16 > 16017
Adaption 10 > Channel 181 > Convert your decimal number to binary (for example my default number in decimal is 65535, converted to binary = 1111111111111111), then change bit 10 and 11 from 1 to 0 (my new binary value becomes 1111001111111111, which is 62463 in decimal) > Enter the new binary value > Test > Save

Success! it works! I Can finally use my Cree LED bulbs without that damn error. Great find awhk82.....Thanks again!

[Lloydeezy E]

I just tried it also. It works great! Thank you awhk82!

[apexit1]

sweet, anyone know which is the brightest light with the best spread available?

[todd1010]

Does this disable "ONLY" the reverse bulb out warning or "ALL" bulb out warnings? Example, if you were to change the front fog lights to LED and change the coding, would it disable the warning?

[zontalk]

I am attempting to find a led bulb for my 2008 A5 3.2 and going on to the second set and no luck. Can I please get directed to a plug and play replacements?

[zoocoin]

This is my first post (ever) guys, so be gentle.
I've tried the iJDMToy "Error Free" bulbs with no luck. I tried rotating the bulbs in case polarity was an issue, and followed all of their troubleshooting advice, but to no avail.
I've ordered a set of Lumens 194CW 9-LED 194/921 Bulbs from CARid which are also supposed to be error-free. I was guaranteed a hassle-free return by my sales associate if they don't work, so I'll let you know how it goes...

EDIT 2/28/13: No luck with the above stated Lumens bulbs, either. The brightness and color are both great, but the errors still come up once you drop into reverse. I have now ordered a set of V-LEDs 8W 921 Reverse Lights. I'm very familiar with the color and brightness of V-LEDs and I'm hoping that 8W will be enough draw to overcome the bulb-out warnings. If not, I may try to wire in some 1W or 2W resistors just so I can keep them without the errors. Otherwise, the search will continue...

Does anyone have a picture when they have installed a resistor or know between wich cabels you should install your resistors.

I have an 2014 ALLROAD with LED rear lights.... only the reverse bulb is halogen, that I've tried to replace with a 5W LED bulb (w16W,w5w,T15,T10) but I've got a bulb out warning in the display =/

And I dont have access to VAGCOM... and the local Audi dealer will reset the coding if my car is in for a service. So I would like to install resistors.

Ideas?

Between 4 and 5 I think I should put the resistor.




The left side it's a 5W LED only with lens straight back.

[acaudi]

Does this disable "ONLY" the reverse bulb out warning or "ALL" bulb out warnings? Example, if you were to change the front fog lights to LED and change the coding, would it disable the warning?

I would like to know this as well, I'm about to do this on my car. Anyone?

[Jmstrag]

I would like to know this as well, I'm about to do this on my car. Anyone?

If you guys read the posts just above, its already answered

[acaudi]

Shit my bad totally missed that. Flame on.

[acaudi]

I have disabled the reverse light bulb error check with VAGCOM. Now running LED bulbs without any issue.

Here are the steps:
Module 46 Central Convenience > Security Access 16 > 16017
Adaption 10 > Channel 181 > Convert your decimal number to binary (for example my default number in decimal is 65535, converted to binary = 1111111111111111), then change bit 10 and 11 from 1 to 0 (my new binary value becomes 1111001111111111, which is 62463 in decimal) > Enter the new binary value > Test > Save

Am I missing something? You said to change bit 10 and 11 to zero, but in your example you changed bit 5 and 6. Just want to make sure I'm reading this right. Thanks!

[zoocoin]

Does anyone have a picture when they have installed a resistor or know between wich cabels you should install your resistors.

I have an 2014 ALLROAD with LED rear lights.... only the reverse bulb is halogen, that I've tried to replace with a 5W LED bulb (w16W,w5w,T15,T10) but I've got a bulb out warning in the display =/

And I dont have access to VAGCOM... and the local Audi dealer will reset the coding if my car is in for a service. So I would like to install resistors.

Ideas?

Between 4 and 5 I think I should put the resistor. Have you guys any ideas between wich cables??

Between 4 and 5 I think I should put the resistor. Have you guys any ideas between wich cables??

[Jmstrag]

Am I missing something? You said to change bit 10 and 11 to zero, but in your example you changed bit 5 and 6. Just want to make sure I'm reading this right. Thanks!

binary values are read from right to left and start at 0

[drob23]

Checked out my tails and it looks like the housing is different on the facelift 4's. Anyone have suggestions? I'm not really excited about unscrewing things at random All I see are some bolts + nuts that appear to mount the tail lights and one torx screw that I think secures the circuit board. Problem is the red housing appears to be impenetrable, like they don't want you to change your own bulbs Do I have to take off the entire lights to get to this?

Here's some shots


There's a small torx screw, you can kind of see the circular housing on the bottom leftish of this shot. My guess is it locks in the circuit board.

[ed@mtl]

Here's my setup on a 2014 Allroad. Followed awhk82 for the Vagcom code and it works. No dash error. Thanks!

LED from eBay $9 shipped from China.


Drivers side:

[AudiCoupe]

Tip to you guys trying to figure out the correct resistors to use.
You have to add a resistor in parallel (not in series) to the new LED bulb to increase the power/current going to the cable to the bulb.

To calculate how big the resistor should be you have to use Ohms law. P=U*I and R=U/I

Lets say that the new bulb is 5W and the standard one is 16W then we have the following calculation:
standard bulb:
I=16W/12V = 1,33A

LED bulb:
I=5W/12V = 0,417A this bulb only draws 1/3 of the current the standard bulb does. We now need to calculate what size resistor to use to draw an additional 0,913A(done below)
R=12V/0,913A = 13,14 ohm now we need to determine how much power this will have to last (done below)
P=12*0,913A = 10,9W

In this case the correct resistor is 13 ohm and 10W

Good luck =)

[shonseb]

Am I missing something? You said to change bit 10 and 11 to zero, but in your example you changed bit 5 and 6. Just want to make sure I'm reading this right. Thanks!

The bits are read from left to right, not right to left

Sent from my Nexus 7 using Tapatalk

[drob23]

Here's my setup on a 2014 Allroad. Followed awhk82 for the Vagcom code and it works. No dash error. Thanks!

LED from eBay $9 shipped from China.


Drivers side:

Thanks for this post!