The Audi A4 B9 (2015–2020, including the 2021 facelift in some markets) is a technological masterpiece. However, Audi, like many manufacturers, ships vehicles with a treasure trove of features disabled by default. Whether due to regional regulations, marketing segmentation, or simply to push you toward a higher trim level, these hidden functions are waiting to be activated.
| Feature | Adaptation Channel | Value / Change | Notes | | :--- | :--- | :--- | :--- | | | (6)-Comfort operation-Comfort opening & Comfort closing | Set both to Active | Hold lock/unlock on fob. (Usually active from factory, but check). | | Sunroof via Key Fob | (10)-Comfort operation-Sunroad (typo common) | Change to Active | Opens roof with windows. | | Auto Lock after 15 km/h | (6)-Automatic lock after start-up | Change to Active | Doors lock automatically. | | Auto Unlock with Key Out | (5)-Automatic unlock when key removed | Change to Active | Unlocks all doors when ignition turns off. | Module A5 – Front Sensors / Driver Assistance For Adaptive Cruise Control (ACC) and Lane Assist. audi a4 b9 coding list
| Feature | Adaptation Channel | Value / Change | Notes | | :--- | :--- | :--- | :--- | | | (12)-Display configuration-lap counter | Change to Active | Adds Boost pressure and oil temp to VC. | | Needle Sweep (Gauge Celebration) | (1)-Staging (in coding, not adaptation) | Change to Active | Needles sweep fully on start-up. | | Disable Start/Stop via Dash Menu | (24)-Automatic start/stop start/stop function status | Change to Active | Adds a permanent button option. (Note: Sometimes requires module 8D adaptation). | | Change Country Region for Display | (78)-Language-Vehicle Region | Change to EU / US / ROW | Affects DRL behavior and some navigation restrictions. | | Battery Voltage Display | (13)-Display configuration-Voltage | Change to Active | Shows voltage in VC menu. | Module 5F – Information Electronics (MMI) The heart of your infotainment system. This is where the magic happens. The Audi A4 B9 (2015–2020, including the 2021
| Feature | Adaptation Channel | Value / Change | Notes | | :--- | :--- | :--- | :--- | | | (48)-Vehicle menu operation-menu_operation_speed_dependent_activation | Change to Deactivated | Allows video (DVD/SD) while driving. Legal only for passengers. | | RS Boot Screen | (18)-Startup screen | Change to 19 (RS4) or 22 (RS5) | Changes logo on MMI start-up. | | Audi Drive Select Individual Mode | (78)-Car_Function_Adaptations_Gen2-menu_display_individual | Change to Activated | Unlocks "Individual" setup for engine/steering. | | Green Engineering Menu (Hidden Menu) | Enable developer mode: (13)-Developer mode | Change to Activated | Allows access to secret menu (hold Back + Car for 6 sec). | | Disable Legal Disclaimer (Accept Screen) | (23)-Disclaimer_Display_Time | Change to 0 | Removes the startup agreement screen. | | Hold Music after Ignition Off | (12)-Infotainment system–Terminal 30-1: Ignition - Afterrun time | Increase to 300s | Radio stays on longer after key out. | Module 46 – Comfort System (Central Locking) Handles windows, sunroof, and locking bits. | Feature | Adaptation Channel | Value /
| Feature | Adaptation Channel | Value / Change | Notes | | :--- | :--- | :--- | :--- | | | (30)-Assistants_visualisation-Lane_assist_startup_state | Change to On (Default is Off) | Lane keeping is active at every car start. | | ACC Last Distance Memory | (1)-Adaptive Cruise Control-last_operation_acceptance_of_distance | Change to On | Remembers last following distance setting. | | Traffic Sign Recognition (TSR) | Requires calibration, but enable via (18)-Car_Function_List_BAP_Gen2-traffic_sign_recognition_0x21 | Change to Activated | Shows speed signs in VC (needs camera). | Module 44 – Power Steering Simple but satisfying.
To unlock them, you need diagnostic software like , OBD11 , or VCP . This extensive guide provides a verified coding list for the B9 platform. Warning: Always back up your original control module maps before making changes. Part 1: Preparation & Safety (Read This First) Before diving into the codes, understand the architecture. The B9 uses UDS (Unified Diagnostic Services) protocols. Unlike older VAG cars, you cannot simply change a byte; you often need to adapt channels or change binary bits.