A4 B9 Coding List | Audi

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.

To unlock them, you need diagnostic software like VCDS (VAG-COM) , 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.



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Here’s a helpful, organized guide to Audi A4 B9 (Type 8W, 2016–2020) coding using tools like VCDS (VAG-COM), OBDeleven, or VCP.

These are popular, well-tested adaptations and long coding changes for convenience, lighting, and driver assistance features. The Audi A4 B9 (2015–2020, including the 2021


Coding your Audi A4 B9 allows you to unlock features hidden by the factory, customize vehicle behavior, and enhance convenience. Below is a curated list of the most sought-after modifications.

Module 09 → Adaptations: (2)-Static cornering light-Helligkeit links & rechts → Set values to 100% . Also ensure (1)-Static cornering light is Active. The fog light will now illuminate when turning at low speed. Let me know if you want a printer‑friendly

Keeps the DRL on fully while the turn signal is blinking (instead of dimming it).

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.