Audi A4 B9 Coding List -
The Audi A4 B9 offers a wide range of coding options to enhance your driving experience. While this list is not exhaustive, it provides a solid starting point for exploring the possibilities. Before attempting any coding, ensure you have the necessary tools and knowledge to avoid potential issues. Always follow proper safety procedures and consult with a professional if unsure.
Before modifying your car's software, you must gather the correct hardware and software tools. Recommended Diagnostic Tools
: Allows you to open or close all windows and the sunroof by holding the lock or unlock buttons on your remote.
→ Long Coding → Byte 4 → Enable Bit 2
Yes, if you blindly change bits without knowing what they do. If you strictly follow verified byte/bit locations and keep a clean backup log, the risk is minimal. If a system throws an error, simply paste your original code back into the module to revert it. audi a4 b9 coding list
If your vehicle has a fully digital Virtual Cockpit, you can unlock the central tachometer display layout found on S and RS models. Note: Compatibility depends on your cluster's firmware version. : 17 (Instruments) Action : Adaptation
: Tagfahrlicht (Daytime Running Lights) → Tagfahrlicht-Dauerfahrlicht aktiviert zusatzlich Standlicht → Change to "Active" High Beam Assist (HBA) Activation
: A5 (Front Sensors Driver Assistant Camera) → Long Coding → Byte 21 → Set to "High Beam Assistant" 4. Advanced Driver Assistance & Powertrain Deactivate Engine Start/Stop System
Prevents the heated seats from turning off automatically when you turn off the ignition. 08 (Air Conditioning) The Audi A4 B9 offers a wide range
Module 09 (Central Electrics) -> Long Coding -> Byte 6 -> Disable Bit 4. Double Beep on Unlock
: Search for "Production sports car" or "Derivatives"
Unlocks lane-keep steering assistance if your car was built with the hardware but without the package selected .
Perform all coding modifications with the ignition active but the engine stopped. Always follow proper safety procedures and consult with
Note: The physical mirror adjustment knob must be set to the passenger side "R" position for this to trigger automatically when shifting into reverse. 3. Lighting Configurations Disable Amber Side Markers (US Models Only)
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If your B9 has the front-facing camera on the windshield (used for Audi Pre-Sense) but lacks ALA from the factory, you can retroactively code it. Long Coding -> Byte 35 -> Enable Bit 0 Step 2 (Module A5): Long Coding -> Byte 16 -> Enable Bit 7 Step 3 (Module 17): Long Coding -> Byte 4 -> Enable Bit 6 Step 4 (Module 44): Long Coding -> Byte 2 -> Enable Bit 7
Keeps the automatic high beams toggled "On" even after you turn off the ignition, saving you from pushing the stalk every drive. 09 (Central Electrics)