Jesse J

Hi, I bought a used Audi A4 B9 2018 which, according to the seller, has matrix headlights. So far I have been unable to to set the headlights to "matrix mode".

With the headlights set to Auto, when I push the indicator stalk away from me only the regular high beams seem to be activated. Those high beams seem to be always fully on when activated, ie. I cannot detect the lights dimming at the areas pointed at other light sources. Dashboard only shows a blue high beam icon without 'A' or "Auto" text on it. The same thing happens with speeds varying from 0 - 100kmh and in lighted/dark areas.

Part numbers on the headlights are 8W0.941.033 / 8W0.941.034 which to me seem to indicate that the lights should not have matrix beam.

The only option codes that seem to be related to lights are these:
8IT, LED headlamps
8Q3, Automatic headlight range adjustment dynamic (self-adjusting while driving)

So no 8G4 / 8G5 or other options that would directly indicating about matrix lights.



What else can I check to verify whether the headlights are standard LED lights or matrix LEDs?

Br, Jesse

Jesse J

Some images of the headlights:

A4Audi4Fun

What region are you located in? 8IT is the PR code for LED Headlamps; LIA is what I show as associated with Matrix Beam. Your picture looks like my headlights which are on the 2017 Order Guide as LED headlights. The Matrix design headlights didn't arrive in North America until the 2020 Model Year.

Jesse J

Sorry, forgot to mention that I am located in Finland.

A4Audi4Fun

As you're in Europe, then my opinion is that the matrix lights would have been available as an option on your 2018 A4 B9 but you do not have that component fitted to your car; your headlights are the "standard" LED ones. BTW - I misread my Excel document, you are correct that if your car had matrix lights the option code would be 8G4 or 8G5. Don't know what redress you have with the seller for misrepresenting the type of headlights fitted to the car you bought,

SMac770

There's multiple groups of groups to define the headlamp functions.

AV0 = RoW left-hand traffic (e.g., UK)
AV1 = RoW right-hand traffic (e.g., Germany)
AV2 = NAR right-hand traffic (e.g., USA)
AV3 = India left-hand traffic
AV3 = China right-hand traffic

8IH = HID
8EX = LED, entry unit in the context of B9
8IT = LED, could be non-matrix, could be single zone matrix, could be multi-zone matrix
8IY = matrix LED
8IZ = matrix LED + laser light

For B9.0, 8IT could be matrix or not. You need to know the 8G_ code to determine which. For B9.5, matrix was moved to code 8IY. 8IT is only non-matrix for B9.5.

8Q0 = no leveling
8Q1 = manual leveling
8Q3 = autoleveling
8Q5 = autoleveling + cornering

The 8IT has a turning light (cornering), but since there's no motor that moves anything, is why I suspect you are 8Q3 and not 8Q5.

8G0 = no light control
8G1 = high beam assist
8G4 = matrix beam
8G5 = multiple matrix beam
8G9 = matrix capable, but not activated

I'm surprised the 8Gx code doesn't make the short list for the sticker. It's kind of significant (for B9.0). You'd need to hit up your dealership for your full PR codes list (140+ codes) to find your 8Gx code.

Void20

Those are full LED headlights. No Matrix

Matrix LED looks like this:
https://commons.wikimedia.org/wiki/F...fer_Detail.jpg

(has more LED beams)


Also, a car can be retrofitted with Matrix headlighs, so the PR code will be the old fitted heatlights from factory. I've bought the car like this.
DIY: Matrix LED

Jesse J

Thanks for your replies. I have now asked for an extended list of the PR codes. Looks like "PXC" option code is also used for Matrix LED lights, at least for the cars sold in Finland. But my short code list does not have that included either.

To be fair, I would not have bought this particular car if it did not have "Matrix LED headlights" text on the advertisement. Sure the car can be retrofitted with the Matrix headlights, but I am not that excited to spend more money to get what I have already paid for. At least this car has a front camera installed so retrofitting should only need wires and modules for the lights.

SMac770

"in the beginning" of B9, Audi used 8IT for LED headlamps, matrix or not. Then Audi seemed to get their act together after B9 came out and stopped using 8IT for both matrix and non-matrix LED configs.

For B9.5, 8IT is non-matrix LED, 8IY is matrix LED, and 8IZ is matrix LED with laser light (A5 only, no idea why they didn't offer it for A4). And 8EX is cheap LED, replacing 8IH bi-xenon as the entry level headlamp. No idea how it's function limited compared to 8IT.

But back to B9.0, here are the headlamps for bi-xenon, non-matrix LED, and matrix LED. The difference for the no-matrix LED (8IT + 8G0/8G1) and matrix LED (8IT + 8G4/8G9) is the high beam section in the inner half (the large square unit in the outer half is the low beam unit).




That your headlamps are ...033 / ...034 make them the non-matrix ones. The matrix ones would be ...035 / ...036.

You mention PXC, though there's no P__ codes at all in the PDF pretty much everyone has. When you get your full list, it would be interesting for you to post it so we can see what the code meanings are that Audi is using these days.

Jesse J

Thanks for the help. I did not receive an extended list of PR codes or any other information about them but the car dealer confirmed that the lights are non-matrix ones.