This guide provides a comprehensive list of known VCDS (VAG-COM Diagnostic System) modifications and how-to guides for the Audi A4 B9 platform. This compilation aims to centralize information often scattered across various forums and threads, offering a one-stop resource for B9 owners looking to customize their vehicles.
While we strive for completeness, compatibility varies depending on the specific trim level and equipment of your A4 B9. Always confirm compatibility before implementing any modifications. Furthermore, modifying your vehicle with VCDS can potentially void warranties or cause unexpected issues if not performed correctly. Proceed with caution and at your own risk.
Popular Audi A4 B9 VCDS Tweaks
Here’s a breakdown of some popular VCDS coding options for the Audi A4 B9:
Convenience and Comfort
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Window Auto Drop: Enable automatic window lowering and raising with a single press of the key fob.
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HVAC Recirculation Memory: Retain the last used HVAC recirculation setting after restarting the vehicle. This ensures consistent air quality preferences.
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Disable Seat Belt Warning: Deactivate the audible seat belt warning chime. (Note: This modification is not recommended for safety reasons).
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Change Heated/Ventilated Seat Settings: Adjust the temperature levels and fan speeds for heated and ventilated seats to personalize comfort.
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Increase Comfort Window Operation Range: Extend the range within which the key fob can control the windows, providing greater convenience for remote operation.
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Enable Beep on Unlock: Configure the vehicle to emit an audible confirmation beep when unlocking.
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Change Lock/Unlock Chirp: Modify or disable the audible chirp that sounds when locking or unlocking the doors. This can include adjusting the number of chirps.
Display and Instrumentation
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Display Gear Number in Virtual Cockpit: Show the current gear selection prominently in the virtual cockpit instrument cluster. This enhances driver awareness.
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Enable Lap Timer: Activate the built-in lap timer functionality within the virtual cockpit or MMI.
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Enable Needle Sweep: Add a dramatic needle sweep animation to the gauges upon starting the vehicle.
Lighting
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Disable Orange Side Marker (Non-Matrix Headlights): Deactivate the orange side marker lights for a cleaner aesthetic. (Only applicable to vehicles without Matrix headlights).
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Enable Coming Home/Welcome Light: Configure the headlights and taillights to illuminate for a predetermined duration upon approaching or leaving the vehicle.
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Turns on Low Beam with High Beam Flash: Activate both low and high beams when flashing the high beams with the headlights off. This improves visibility during signaling.
Driving and Performance
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Deactivate Start/Stop: Disable the engine’s automatic start/stop function, preventing the engine from shutting off at idle.
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Active Lane Assist Steering Vibration Adjustment: Modify the intensity of the steering wheel vibration feedback provided by the lane assist system.
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Enable Sports Computer: Access additional performance data and information through the onboard computer.
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Adjust Steering Wheel Heater Temp: Fine-tune the temperature settings for the steering wheel heater.
Other Modifications
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Disable MMI Lock-out Functionality: Allow access to certain MMI functions while the vehicle is in motion. (Note: Use caution as this may distract the driver).
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Auto Parking Brake with Ignition Off: Automatically engage the parking brake when the ignition is turned off.
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Enable Emergency Braking Lights: Enhance safety by activating the hazard lights during hard braking.
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Enable Ability to Lock Car with Engine Running: Allow locking the vehicle while the engine is still running.
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Enable/Disable Auto Lock When Driving: Automatically lock the doors once the vehicle reaches a certain speed.
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Increase Time Required to Open Trunk Lid: Adjust the duration of the key fob button press required to open the trunk, preventing accidental openings.
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Disable Rear Wiper: Deactivate the rear wiper for vehicles equipped with a rear wiper delete.
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Switch Off Speed for Park Assist: Adjust the speed at which the park assist system deactivates.
This list represents a selection of potential VCDS modifications for the Audi A4 B9. For detailed instructions and further information on each mod, consult reputable online forums and resources dedicated to VCDS coding. Always remember to proceed cautiously and back up your original coding before making any changes.
