Audi A4 B9
Built-in Activations
Features already in your A4 B9's hardware — just waiting to be switched on.
Built-in
Taillight S/RS Animation
Dynamic S/RS taillight animation on lock & unlock.
Built-in
Headlight RS Animation
RS4 Matrix headlight welcome animation.
Built-in
Matrix Headlight Activation
Unlock adaptive Matrix LED on US/NAR-spec vehicles.
Built-in
Close Trunk on Key Fob
One-touch tailgate close from your key fob.
Built-in
Traffic Sign Recognition
Speed limits and road signs displayed in your cockpit.
Built-in
Lane Assist (Active Lane Keeping)
OEM Lane Assist activated using your front camera.
Built-in
QQ2 Entry Color Customization
Change ambient entry light from white to blue, red or green.
Built-in
Subwoofer Menu (MIB3)
Unlock the hidden subwoofer slider in Sound settings.
Guides for A4 B9
Detailed activation guides with compatibility details, requirements, and pricing for your Audi A4 B9.
A4 B9 Specific
How to Enable Matrix Headlights on Audi A4 B9Your Audi A4 B9 has Matrix LED headlights — but if you bought it in the US, the adaptive features are software-locked. T...
How to Activate Traffic Sign Recognition on Audi A4 B9Your Audi A4 B9's front camera can already read speed limit signs — but the feature is not enabled. Traffic Sign Recogni...
How to Activate Taillight Animation on Audi A4 B9Your Audi A4 B9 has dynamic LED taillights that support animated light sequences — but from the factory, only the dynami...
How to Unlock the Subwoofer Menu on Audi A4 B9 (MIB3)Your Audi A4 B9 with MIB3 has a hidden Subwoofer control buried in the MMI software. By default, the Sound menu only sho...
How to Enable Trunk Close on Key Fob on Audi A4 B9Your Audi A4 B9 Avant has a power tailgate that you can open remotely — but closing it requires walking up to the car an...
General Guides
Audi Coding Without VCDS or Dealer VisitsTired of researching long coding values, buying expensive licenses, and hoping you don't brick a module? There's a bette...
Hidden Audi Features You Can Unlock on MLBevo VehiclesYour Audi has more features than you think. Matrix headlights, traffic sign recognition, subwoofer controls, taillight a...
How to Activate Traffic Sign Recognition on Your AudiYour Audi's front camera can read speed limit signs and display them right in your dashboard. The hardware is already th...
Unlock the Hidden Subwoofer Menu on Audi MIB3Your Audi's sound system has a hidden Subwoofer slider that Audi left turned off. One activation adds it right next to y...