This guide provides a curated list of the most popular coding modifications for the B9 platform.
Module 08 (Auto HVAC) -> Adaptation -> Memory for air recirculation
: Long Coding → Byte 1 → Activate Bit 3 (Lap Timer active) Acceleration Measurement (0-100 km/h) Enables the performance menu to measure acceleration times. Module : 17 (Dashboard / Instruments)
Module 09 (Central Electrics) -> Long Coding -> "DRL MMI" set to .
| Feature Category | Feature Description | Module | Procedure / Adaptation Channel | Value/Setting to Change | | :--- | :--- | :--- | :--- | :--- | | | Needle Sweep (Staging) | 17 - Instruments | Long Coding, Byte 1 | Activate Bit 0 | | | Lap Timer / Oil Temp | 17 - Instruments | Long Coding, Byte 1 | Activate Bit 3 | | | Show Gear in D/S | 02 - Auto Trans | Adaptation | Channel: "Single Gear Display", New Value: "D on/S on" | | Driver Assist | Active Lane Assist | A5 - Front Sens. Drv. Assist | Long Coding, Byte 16 | Activate Bit 4 | | | | 09 - Cent. Elect. | Long Coding, Byte 11 | Activate Bit 6 | | | | 44 - Steering Assist | Long Coding, Byte 2 | Activate Bit 0 | | | | 5F - Elect. Info. | Adaptations | Activate lane_assist_0x19 and lane_assist_0x19_msg_bus | | | Traffic Jam Assist | 13 - Auto Dist. Reg | Long Coding, Byte 1 | Bits 3 & 4 | | | | 44 - Steering Assist | Long Coding, Byte 2 | Bit 0 | | | High Beam Assist | 09 - Cent. Elect. | Long Coding, Byte 5 | Bit 0, and dropdown to "60" | | | | A5 - Frt Sens. Drv. Assist | Long Coding, Byte 21 | Dropdown to "20" | | | Traffic Sign Recognition | A5 - Frt Sens. Drv. Assist | Long Coding | Byte 1 Bit 0 | | | | 5F - Elect. Info. | Adaptations | Activate menu_display_road_sign_identification , etc. | | Convenience | Lock/Unlock Chirp | 46 - Central Conv. | Long Coding (or 09) | Activate "Acknowledge Signals" | | | Comfort Windows (Remote) | 46 - Central Conv. | Long Coding | Activate "Comfort Operation" | | | Mirror Fold on Lock | 42/52 - Door modules | Coding | Activate "Fold mirror" function | | | Disable Seatbelt Chime | 17 - Instruments | Long Coding, Byte 12 | Activate Bit 1 (Seat Belt Warning inactive) | | | 5x Turn Signal Flash | 46 - Central Conv. | Adaptation | "Komfortblinken" to "5" cycles | | | Coming/Leaving Home | 09 - Cent. Elect. | Adaptations | Set activation time in seconds | | Lighting | Scandinavian DRLs | 09 - Cent. Elect. | Long Coding | Activate the option for rear lights with DRL | | | Disable Orange Side Markers | 09 - Cent. Elect. | Long Coding | Disable Bit for "Side Marker Light" | | | DRL Menu in MMI | 09 - Cent. Elect. | Adaptations | Channel (5)-Daytime running lights to "active" | | | Ambient Light on Unlock | 09 - Cent. Elect. | Adaptation | Set activation via central locking | | MMI / Audio | AM Radio Band Removal | 5F - Elect. Info. | Long Coding, Byte 9 | Set to value that disables AM (e.g., "11" hex) | | | Deactivate Start/Stop | 19 - CAN Gateway | Adaptations | Change Start/Stop function to "not active" | | Performance | Sportier Throttle Response | 44 - Steering Assist | Coding | Select "Audi dynamic steering" variant | audi a4 b9 coding list
Many newer B9 models require you to physically pop the hood (bonnet) open to write adaptation changes to the modules successfully . 仪表 (Dashboard & Virtual Cockpit) Needle Sweep (Gauge Test)
Adds a lap timer menu to your Virtual Cockpit or Driver Information System (DIS) display. : 17 (Dashboard / Instruments)
Change target brightness value to match standard DRL (typically 100% ) or change the configuration from winking to active . 3. Needle Sweep (Gauge Test) on Startup
Modifies the instrument cluster to display exactly which gear the automatic transmission is in (e.g., showing "D1" or "S3" instead of just "D" or "S"). 02 (Transmission) Long Coding: Byte 2 → Enable Bit 2 ( Gear Display ) 9. Enable Lap Timer and Oil Temperature This guide provides a curated list of the
To access specific control modules, you may need these common security access codes: 20113 13 — Auto Distance Regulation: 20103 6D — Trunk Electric: 12345 03 — ABS Brakes: 61378 Popular "Tried and Tested" Tweaks The following are common modifications for the B9 platform: Virtual Cockpit & Interior
Coding, in the context of automotive tuning, refers to the process of modifying the software that controls various vehicle systems, such as the engine, transmission, and infotainment. By reprogramming the vehicle's computer, owners can enable or disable features, adjust performance parameters, and even add new functionality. For Audi A4 B9 owners, coding offers a way to personalize their vehicle, improve performance, and stay up-to-date with the latest technological advancements.
Before diving into the coding list, it’s essential to understand the hardware and software you’ll need. Without the right tools, you can’t access your car’s control modules.
Makes the tachometer and speedometer needles sweep to their maximum values and back when you switch on the ignition. 17 - Dashboard Function: Long Coding | Feature Category | Feature Description | Module
Based on the most common requests from owners, here are the most in-demand coding modifications for the Audi A4 B9.
Note: This requires changes across multiple modules (09, 17, 44, A5, and 5F).
| Feature | Adaptation | Value | |--------|-------------|-------| | Enable hidden green menu (engineering menu) | Developer Menu | Activated | | Video in motion (VIM) – local laws apply | Speedlock → Speed_dependent_volume or VIM activation byte | See long coding helper | | Remove start‑up warning (Accept screen) | Startup_Screen → Legal_disclaimer | Deactivated | | Enable needle test in MMI | Display → Needle test | Active |