Programming a new key for your Volkswagen or Audi can seem daunting, but with a VCDS (Vag-Com Diagnostic System) and this guide, the process becomes straightforward. This article outlines the step-by-step procedures for matching new radio-frequency remote keys to various VW and Audi models using VCDS. Important Note: This guide focuses on programming the remote’s radio frequency, not the immobilizer chip. For immobilizer programming, consult your vehicle’s Factory Repair Manual or other resources on the Ross-Tech website.
Using VCDS to Program a New Key: Two Primary Methods
There are two main methods for programming a new key with VCDS, depending on your specific vehicle. Always check the Ross-Tech Wiki for model-specific instructions before beginning. Gather all your keys, including existing and new ones, before starting the procedure.
Method 1: Adaptation Channel Programming
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Key in Ignition: Insert a working key into the ignition and turn it to the “ON” position. Do not start the engine.
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Access Central Locking/Convenience Module: In VCDS, select either [46 – Cent. Conv.] or [35 – Cent. Locking], depending on your vehicle. You can find the correct module for your car on the Ross-Tech website’s applications page.
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Adaptation Channel 01 (or 21): Go to [Adaptation – 10] and enter channel “01”. In some Audi models, this might be channel “21”. Click [Read]. This displays the number of currently stored keys.
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Enter New Key Count: In the “New Value” field, enter the total number of keys you want to program, including existing ones. You can program up to four keys. Click [Test] to verify the number and then [Save].
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Program Each Key: Press and hold the UNLOCK button on each key fob for at least one second. You have 15 seconds to program all keys. The car may acknowledge each successful programming with flashing lights or a horn beep. Program each key one at a time.
Method 2: Measuring Block Programming (If Method 1 Fails)
If Adaptation Channel 01 or 21 is unavailable, use this method:
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Key in Ignition: Insert a working key and turn the ignition to the “ON” position without starting the engine.
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Access Module and Measuring Blocks: Select [46 – Cent. Conv.] or [35 – Cent. Locking] in VCDS and go to [Meas. Blocks – 08]. Enter group “003” (or “007” in some vehicles) and click [Go!]. Field 2 displays the number of matched remotes and their memory positions. A “1” indicates an occupied position, and a “0” indicates a free position.
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Lock Car with New Key: Lock the car from the outside using the new, unprogrammed key in the driver-side door lock. You might need to hold the key in the unlock position for the next step.
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Press Unlock Button: Within five seconds, press the UNLOCK button on the new key enough times to reach the next available memory position. For instance, if Field 2 showed “0001,” press the UNLOCK button twice to program the new key to position 2. The car may acknowledge this action.
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Unlock and Cycle Ignition: Wait five seconds, press the UNLOCK button to unlock the door, turn the ignition OFF, and remove the old key. Test the new key by locking and unlocking the car.
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Verify Programming: Insert the new key into the ignition, turn it ON, and in VCDS, navigate back to [46 – Cent. Conv.] or [35 – Cent. Locking], [Meas. Blocks – 08], and group “003” (or “007”). Click [Go!]. Field 2 should now show both the old and new keys in their respective memory positions.
Clearing Existing Keys with VCDS
If necessary, you can clear all programmed remotes:
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Access Adaptation Channel 00: In VCDS, select [46 – Cent. Conv.] or [35 – Cent. Locking], go to [Adaptation – 10], and enter channel “00”.
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Clear Remotes: Click [Read] and then [Save]. Confirm by clicking [Yes] when prompted. This will erase all programmed remotes, requiring you to program all keys again using one of the methods above.
This comprehensive guide provides a clear path to programming new keys for your VW or Audi using VCDS. Remember to always consult the Ross-Tech Wiki for vehicle-specific instructions and proceed with caution. This information is for educational purposes only, and Ross-Tech is not responsible for any damage or issues arising from following these instructions.
