Incorrect coding can cause vehicle malfunctions or leave control units in a "bricked" state. Always back up your original coding (create a "VCDS Map" or save the trace file) before making changes.
By default, the bright front DRL dims when you activate the turn signal so the indicator is easier to see. You can program it to stay at 100% brightness. : 09 (Central Electrics) Action : Coding / Long Coding
The of your B9 (Pre-facelift 2016-2019 vs Facelift 2020+) Which coding tool you plan to use (VCDS, OBDeleven, etc.) Specific features you are most eager to unlock
A budget-friendly Bluetooth adapter with simple toggle switches for basic adaptations, though it lacks advanced long coding. Safety Rules Before You Begin audi a4 b9 coding list
Change at what speed the blind spot monitoring activates.
| Feature | Description | Module & Coding Path | | :--- | :--- | :--- | | | The fog lights illuminate independently when turning the steering wheel at low speeds to light up corners. | 09 - Cent. Elect: Long Coding > Fog light configuration > switch to static cornering light via foglightpin | | DRL Menu in MMI | Adds a check-box to the MMI car settings menu to turn Daytime Running Lights on/off. | 09 - Cent. Elect: Adaptations > Daytime running lights > Tagfahrlicht Aktivierung durch Bedienfolge moeglich = active | | Scandinavian DRLs | Turns on the rear tail lights together with the DRLs (looks like low-beam lights but at DRL brightness). | 09 - Cent. Elect: Adaptations > Außenlicht_Rear > Heckdeckel_Verbaut = not_active | | High Beam Assist (HBA) | Automatically toggles high beams when the camera detects oncoming cars or city lights. (Requires camera in rearview mirror housing). | A5 - Front Sensors: Long Coding > Byte 2 > Enable Bit 0 (High Beam Assist) | | Auto High Beams Menu | Adds HBA options to the MMI for cars with "Prem Plus" packages that have the hardware. | Module A5: Adaptations > Menue_ferr_licht = active |
This comprehensive guide covers the essential tools, safety prerequisites, and the most popular coding modifications available for the Audi A4 B9 platform. 🛠️ Required Tools for Audi A4 B9 Coding Incorrect coding can cause vehicle malfunctions or leave
: This information is for educational purposes only. The author and sources are not responsible for any damage to your vehicle. Always consult professional services if unsure.
Small quality-of-life adjustments that eliminate daily annoyances or add premium luxury features. Comfort Turn Signal Cycle (Highway Flash)
Note: Manual long coding is blocked on newer firmware. This modification usually requires an OBDEleven one-click app or a dedicated VCP script. 12. Display AM/FM/Satellite Radio Station Logos You can program it to stay at 100% brightness
Note : Since your physical steering column stalk won't have the ALA button, the system will turn on by default every time you start the car. You can adjust the vibration and intervention timing via your MMI screen under Car Settings. 2. Adjust Distance for High Beam Assist Activation
Ensure your car hood (bonnet) is physically unlatched and popped open. Audi integrated a security gateway requirement on many B9 models that blocks writing changes to modules unless the hood switch registers as open.
Set Akustische Rueckmeldung entriegeln (unlock) and Akustische Rueckmeldung verriegeln (lock) to Yes . Set Menuesteuerung akustische Rueckmeldung to Active to add the checkbox to your MMI screen. 3. Driver Assistance & Virtual Cockpit Adaptive Cruise Control (ACC) Default Distance Menu