The Audi A4 B9 (2016–present) uses electronic control units (ECUs) that can be configured (coded) to enable, disable, or modify vehicle features. Coding changes are done via diagnostic tools (e.g., VCDS/ODIS, OBDeleven, VCP) using OBD-II connections and typically involve adjusting long coding bytes or adaptation channels. Common coding targets include lighting, convenience features, driver assistance, locking, and display options.
The Audi A4 B9 (Typ 8W) operates on the Volkswagen Group MQB-EVO platform, utilizing a decentralized electronic architecture. Unlike simple parameter adjustments, "coding" refers to the modification of hexadecimal values within control modules (e.g., 09 – Central Electronics, 5F – Information Electronics). This paper provides a structured list of documented, community-verified coding changes for the B9 platform, categorized by module. Emphasis is placed on safety, diagnostic prerequisites (VCDS, ODIS, OBD11), and reversibility.
Turn off ADS (Audi Drive Select) warning
Module 44 – Steering → Driving profile switch → activated (already active on S‑line) audi a4 b9 coding list
Enable oil temperature in VC (Virtual Cockpit)
17 – Dashboard → Oil temperature → Active
Reverse mirror dip (passenger side) – only with memory seats
52 – Passenger door → Spiegelabsenkung bei Rueckwaertsfahrt → Active Audi A4 B9 coding list Overview The Audi
| Feature | Adaptation | Value |
|--------|-------------|-------|
| Auto fold/unfold mirrors | Spiegelverstellung → Funk Spiegelanklappung | Active |
| Mirror fold delay (on lock) | Funk Spiegelanklappung Modus | by look command via remote control key |
| Turn off seatbelt chime | Seat belt warning → Seatbelt reminder | Deactivated (seat dependent) |
Allows passengers to watch DVDs or videos on the MMI screen while the car is moving. Turn off ADS (Audi Drive Select) warning Module
Video_Freigabe (Video Release)Author: Technical Research Compilation
Platform: MQB-EVO Architecture (Audi B9 8W)
Date: 2025 (Current as of known datasets)
Keeps the DRL on fully while the turn signal is blinking (instead of dimming it).
SLA_FLC_Tagfahrlicht_Dauerfahrlicht (or similar variants depending on region)Cause: You lack the hardware. For example, coding mirror dip requires the memory module in the door. Fix: Accept that some features are hardware-locked. You cannot add Lane Assist with coding alone.