08-05-2016, 09:38 AM
Last edit by: IB Advertising
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- Audi A4 B7 How to Replace Tail Light Bulbs<br>Step by step instructions for do-it-yourself repairs.
Intermittant Rear Brake/Turn Signal Light Outage
10-24-2019, 09:25 AM
#161
It seems SAE is a world wide organization that sets automotive standards. This must probably mean that the tail light is SAE compliant which means it's been tested and approved by the SAE Organization. Check this out: What is SAE/DOT
I would assume the tail lights both LED or non-LED "made by Audi standards" are SAE compliant. An aftermarket tail light might not be SAE compliant. So I would subtract both values first to see what happens. I would then add the SAE compliance value if there are issues.
I would assume the tail lights both LED or non-LED "made by Audi standards" are SAE compliant. An aftermarket tail light might not be SAE compliant. So I would subtract both values first to see what happens. I would then add the SAE compliance value if there are issues.
Last edited by jasontaylor7; 10-24-2019 at 09:29 AM.
10-24-2019, 10:35 AM
#162
10-24-2019, 06:35 PM
#163
All right. My scanner software, vcp 5.x, refused to allow a single subtraction of the "+0131072 = Highline (LED Rear Lights)" by itself. It said it was an out of range coding. It did, however, allow it when +0004096 = SAE Rear Lights (PR-A8U) was also subtracted. So PR-A8U seems like goes with LED lights, perhaps referring to the 5 SAE bulbs you can pick up at any auto store.
All lights now work perfectly, and the other LED one doesn't ever turn on. Given that non-led light lenses are going for $50 on ebay, this means that the cheapest way to solve the problem of this thread is to purchase the non-led ebay lights and as well as a ~$47 "bulb holder". I got this one: https://www.ebay.com/itm/Bapmic-Rear...72.m2749.l2649 .
In hindsight, this car's tail lights are ideal on European cars. For the wealthy US market they tried to jazz it up with LED tail lights, but then there's no orange and frankly it's not as safe IMO.
Net cost of my "downgrade to Europe" repair is only $97, way cheaper than other options. The light functions are not perfectly symmetric since I only did the driver's side, but it's a better use of the orange light, and if it bothers you too much get the right side replaced as well.
One bizarre note: it may take like 15 minutes after you change your coding before you can really clear the bad light codes!!!
My inspection deadline is tomorrow, so many thanks to Kelisko since I was would have just subtracted 131072 and still have been in fail country now.
All lights now work perfectly, and the other LED one doesn't ever turn on. Given that non-led light lenses are going for $50 on ebay, this means that the cheapest way to solve the problem of this thread is to purchase the non-led ebay lights and as well as a ~$47 "bulb holder". I got this one: https://www.ebay.com/itm/Bapmic-Rear...72.m2749.l2649 .
In hindsight, this car's tail lights are ideal on European cars. For the wealthy US market they tried to jazz it up with LED tail lights, but then there's no orange and frankly it's not as safe IMO.
Net cost of my "downgrade to Europe" repair is only $97, way cheaper than other options. The light functions are not perfectly symmetric since I only did the driver's side, but it's a better use of the orange light, and if it bothers you too much get the right side replaced as well.
One bizarre note: it may take like 15 minutes after you change your coding before you can really clear the bad light codes!!!
My inspection deadline is tomorrow, so many thanks to Kelisko since I was would have just subtracted 131072 and still have been in fail country now.
Last edited by jasontaylor7; 10-24-2019 at 06:41 PM.
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kelisko (10-25-2019)
02-09-2020, 07:21 AM
#164
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Brake / Running / Turn signal lights
Same issue... I removed the cluster inside the tail light housing and pulled all of the bulbs.. There was a lot of corrosion on these connections.. I took a small file and cleaned up each of the bulb sockets and any other areas that seemed to have a lot of corrosion.. After putting everything back together I did have running lights and that was it.. no brake lights or turn signals.. However in the trunk of the car there is a fuse box I pulled the fuses for the left and right rear lights and they were not blown however they were a bit corroded so I replaced them and I now do have all working lights.. I believe my issue was a combination of the two.. You can buy new housing assemblies to fix the issue quickly however they are costly so if you have the time and can be patient then use some small files and clean the corrosion around you bulb holders!
hope this helps
hope this helps
I'm having a strange problem, and I wonder if anyone can help me figure out how to fix it.
About 3x in the last week as I've been driving I'd hear a beep and a message shows up on the small dash display indicating that the driver's side rear turn signal light has a problem. Immediately followed by the same beep and a message indicating that there's a brake light problem. As soon as I see this message, if I turn on the left turn signal, I get the rapid blinking and the rear signal does not operate. Further, the brake light does not operate.
Now, when I turn off the car, and then turn it on again, the error has cleared and everything operates properly. All lights seem to match those on the other side. I cannot replicate the problem on command. It happened today, and a couple of times during the week last week with limited regular driving. However, I drove 330 miles yesterday and it didn't show up once then.
Does anyone have an idea what's going on or how to resolve the situation? Thanks!
About 3x in the last week as I've been driving I'd hear a beep and a message shows up on the small dash display indicating that the driver's side rear turn signal light has a problem. Immediately followed by the same beep and a message indicating that there's a brake light problem. As soon as I see this message, if I turn on the left turn signal, I get the rapid blinking and the rear signal does not operate. Further, the brake light does not operate.
Now, when I turn off the car, and then turn it on again, the error has cleared and everything operates properly. All lights seem to match those on the other side. I cannot replicate the problem on command. It happened today, and a couple of times during the week last week with limited regular driving. However, I drove 330 miles yesterday and it didn't show up once then.
Does anyone have an idea what's going on or how to resolve the situation? Thanks!
10-09-2020, 02:56 PM
#165
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Folks, I too am working through a tail light issue.
Both the left and right tail lights.
all lights on both sides, are sending warnings.
so I get a tail, turn, brake, and reverse warning.
note: lights work but they send warnings.
Issue started when I removed both lights to do some body work.
Info, I have a 2010 a6 with 140k miles.
After reading all the posts I am focused on the ground.
terminal #1.
from left wiring harness connector, terminal 1 to body ground = .5 ohms
my meters internal resistance is .2.
now to the left tail light module, wire connector socket.
a good examination of the spade connector of terminal #1 (ground) you could see a black dimple on both sides of the spade connector.
these connectors index in the same spot when they are dimpled like these.
I cleaned all the spade connectors individually with denatured alcohol.
the #1 spade was dirtier than the rest.
could I have used Deox-it and shoved things back together Sure but, I scraped And sanded the #1 spade till the surface was flat, cleaned with denatured alcohol and put things back together. I have dielectric in the socket.
surely the coating on the connectors have dissolved through the silver.
in my electrical experience the connectors need to be examined closely.
lately the Left light warning will happen right away.
took a little test drive and so far so good.
buy a new tail light?- no way.
This is just my hypothesis and time will tell.
new to the site but the information in sites like these are Invaluable.
if i can repay the help I have received from sites like these, I will gladly.
thank you all.
gary
Both the left and right tail lights.
all lights on both sides, are sending warnings.
so I get a tail, turn, brake, and reverse warning.
note: lights work but they send warnings.
Issue started when I removed both lights to do some body work.
Info, I have a 2010 a6 with 140k miles.
After reading all the posts I am focused on the ground.
terminal #1.
from left wiring harness connector, terminal 1 to body ground = .5 ohms
my meters internal resistance is .2.
now to the left tail light module, wire connector socket.
a good examination of the spade connector of terminal #1 (ground) you could see a black dimple on both sides of the spade connector.
these connectors index in the same spot when they are dimpled like these.
I cleaned all the spade connectors individually with denatured alcohol.
the #1 spade was dirtier than the rest.
could I have used Deox-it and shoved things back together Sure but, I scraped And sanded the #1 spade till the surface was flat, cleaned with denatured alcohol and put things back together. I have dielectric in the socket.
surely the coating on the connectors have dissolved through the silver.
in my electrical experience the connectors need to be examined closely.
lately the Left light warning will happen right away.
took a little test drive and so far so good.
buy a new tail light?- no way.
This is just my hypothesis and time will tell.
new to the site but the information in sites like these are Invaluable.
if i can repay the help I have received from sites like these, I will gladly.
thank you all.
gary
10-10-2020, 04:45 AM
#166
just get the OEM one. I am sure you can find aftermarket ones even cheaper, but they might not work well with the central computer.
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