Right headlight high beams flash when I use my turn signal?

2016 AUDI A3

131,000 MILES • 1.8L • 4 CYL • TURBO • 2WD • AUTOMATIC

GUILLERMO809

MEMBER
3 POSTS

My right headlights drl is out and my right side high beams flash when I use my turn signal (only on the right side) I did notice that the inner tail light bulb carrier went out for the passenger side and both of the taillights share the same ground i don’t know if that would cause any issues to the front side since it’s only on the right side. I did change the bulbs already and still the same issue. I checked voltage on the wires and they were good, and inspected the fuses which also seemed good. I swapped the ballast out from left to right and the problem went away but came back after a day and a half.

Oct 3, 2024 at 1:01 AM

STRAILER

✓ASE Certified Mechanic
54,832 POSTS

It sounds like you have a problem with the vehicle system electronic module at the left end of the dash. To be sure let's run a CAN scan. You can get a CAN scanner (Controller Area Network) which will work on most cars from Amazon.

Here is a video to show you how:

https://youtu.be/u-4syLc-ifQ

Here is how to replace the vehicle system electronic module in case a code is stored for it. Check out the images (below). Please let us know what happens.

Images (Click to enlarge)

Professional Diagram for 2CarPros Members
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Oct 3, 2024 at 10:21 AM

GUILLERMO809

MEMBER
3 POSTS

I also just noticed it does a loud clicking noise coming from the headlight.

Video (Click to enlarge)

Oct 3, 2024 at 10:30 AM

STRAILER

✓ASE Certified Mechanic
54,832 POSTS

Thanks for the video. When you say you switched the bulbs out do you mean the headlight assembly housing? If this is the only part of the lighting system having an issue, the housing has electronics inside of it. I wonder if a CAN scan would have a code for what is wrong. You can get a CAN scanner (Controller Area Network) which will work on most cars from Amazon.

Here is a video to show you how:

https://youtu.be/u-4syLc-ifQ

Please go over this guide and get back to us.

Oct 4, 2024 at 10:40 AM

GUILLERMO809

MEMBER
3 POSTS

No, I just switched the bulbs.

Oct 4, 2024 at 2:36 PM

STRAILER

✓ASE Certified Mechanic
54,832 POSTS

I would do the housing which has the voltage converter and headlight control module. Here is how to do the job correctly. Check out the images (below). Please let us know what happens.

Images (Click to enlarge)

Professional Diagram for 2CarPros Members
Click here to log in and view diagram.

Oct 5, 2024 at 9:25 AM

Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.