New users often confuse the two sections in VCDS.
Pro Tip: Use the "Search" function in VCDS/OBD11. Instead of scrolling through 100 channels, search for keywords like
Ambiente,Komfort, orSpiegel.
| Module | Name | Common tweaks | |--------|------|----------------| | 01 | Engine | Start-stop off, soundaktor off | | 03 | ABS/ESP | Brake assist sensitivity (not recommended for street) | | 09 | Central Elec. | Lights, wipers, coming home, folding mirrors | | 13 | Adaptive Cruise | Lane assist early/late reaction | | 17 | Instruments | Needle sweep, lap timer, seatbelt chime | | 42/52 | Door modules | Mirror folding, window comfort | | 44 | Steering | Steering weight adjustment | | 5F | MMI | Video in motion, menu activation | | 6D | Trunk | Power trunk close from key fob |
If you are using VCDS, you won't see plain English names like "Needle Sweep." You will see Long Coding Helper bytes.
Coding your Audi A4 B9 can unlock many hidden features and heavily customize your driving experience. Software tools like OBDeleven or VCDS are required to interface with your car's computer network .
Below is a categorized guide to the most popular coding modifications available for the Audi A4 B9 platform (2017–2024+). ⚠️ Important Disclaimer
Backup First: Always create and save a complete scan or record your default "Long Coding" values before making any changes .
No Engine Start: Perform these steps with the ignition on, but the engine off .
Hood Open Rule: 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)
Effect: Gauges do a full sweep from zero to max when you turn on the ignition. audi a4 b9 coding list
Location: Module 17 (Dash Board) -> Long Coding -> Staging -> Set to Active. Display Gear Number
Effect: Shows D1, D2, S1, S2 instead of just D or S on your dash .
Location: Module 02 (Transmission) -> Long Coding -> General -> Display Gear -> Set to Active. Enable Lap Timer
Effect: Adds a track lap timer and oil temperature display to the driver screen .
Location: Module 17 (Dash Board) -> Long Coding -> Byte 1 -> Enable Bit 3 . 💡 Lighting Tweaks Daytime Running Lights (DRL) with Tail Lights
Effect: Keeps your rear tail lights illuminated whenever your front DRLs are on.
Location: Module 09 (Central Electrics) -> Long Coding -> Tagfahrlicht-Dauerfahrlicht aktiviert -> Set to Active. Disable Orange Side Markers
Effect: Turns off the orange corner lights on North American models for a cleaner Euro look .
Location: Module 09 (Central Electrics) -> Long Coding -> Byte 6 -> Disable Bit 4. Double Beep on Unlock New users often confuse the two sections in VCDS
Effect: Horn chirps twice when unlocking and once when locking .
Location: Module 46 (Central Conv.) -> Adaptation -> sounder_settings-beeptime_opening_central_locking -> Change to double_beep . 🎛️ Comfort & Convenience Deactivate Start/Stop System
Effect: Disables the annoying feature that shuts off your engine at red lights .
Location: Module 08 (Air Conditioning) -> Adaptation -> A/C comfort parameter for start/stop function -> Change value from 5 to 0. Increase Trunk Opening Time Delay
Effect: Prevents accidental trunk openings by requiring you to hold the key fob button longer .
Location: Module 46 (Central Conv.) -> Adaptation -> Time for opening rear lid with remote control -> Change from 800ms up to 2000ms . Allow Locking Car with Engine Running
Effect: Allows you to hop out and lock the doors using your physical key while leaving the engine running .
Location: Module 46 (Central Conv.) -> Long Coding -> central_locking_system_lock_driving_engine_running -> Set to Active. 🛣️ Driver Assistance High Beam Assist (Auto High Beams)
Effect: Automatically toggles high beams on and off based on oncoming traffic (requires the front-facing mirror camera). Pro Tip: Use the "Search" function in VCDS/OBD11
Location: Module 09 (Central Electrics) -> Long Coding -> fernlicht_assistent -> Set to Active. Active Lane Assist
Effect: Unlocks lane-keep steering assistance if your car was built with the hardware but without the package selected .
Note: This requires complex coding across modules 09, 17, A5, and 44 .
** VCDS Mod List for B9 ** | Audizine Audi Enthusiast Forums
This is a structured technical overview paper on the subject of coding modifications for the Audi A4 B9 (2016–2020). It is written in the style of an enthusiast technical document, suitable for forums, garage references, or personal research.
To code the B9 platform, you typically need one of the following:
Access: [A5] → Coding
| Function | Modification | Effect | |----------|--------------|--------| | Lane Assist default to “Last Setting” | Byte 12, Bit 0 = 1 | Lane assist stays off/on as last used, not reset at ignition | | Early warning for Pre-sense | Byte 7, Bit 2 = 1 | Increases sensitivity of collision warning |