Programming a new key fob for your Volkswagen or Audi can seem daunting, but with a VCDS (Vag-Com Diagnostic System) and this guide, the process is straightforward. This article provides step-by-step instructions on how to use VCDS to program a new key fob, covering various VW and Audi models.
Using VCDS to Program Your VW or Audi Key Fob: Two Methods
There are two primary methods for VCDS key fob programming. We’ll outline both, starting with the most common. Important Note: Always consult your vehicle’s factory repair manual for specific instructions and safety precautions. Ross-Tech, the maker of VCDS, is not responsible for any damage resulting from these instructions.
Method 1: Adaptation Channel Programming
-
Gather Your Supplies: You’ll need your VCDS system, all key fobs you want to program (both old and new), and your vehicle’s factory repair manual.
-
Access Central Convenience or Central Locking: Connect your VCDS to your vehicle’s OBD-II port and turn the ignition ON. In the VCDS software, select:
- [46 – Cent. Conv.] or [35 – Cent. Locking] depending on your vehicle. You can find the correct module for your car in the Ross-Tech application guide.
-
Adaptation Channel 01 (or 21): Go to [Adaptation – 10].
- Enter channel “01”. In some Audi models, this might be channel “21”.
- Select [Read] to see the number of currently stored remotes.
-
Enter the New Value: In the “New Value” field, enter the total number of keys you want to program (up to four, including existing keys).
- Select [Test] to verify the number.
- If correct, select [Save].
-
Program Each Key: Within 15 seconds, press and hold the UNLOCK button on each key fob for at least one second, one at a time. Your car may acknowledge each successful programming with flashing lights or a horn beep.
Method 2: Measuring Blocks Programming (If Method 1 Fails)
If Adaptation Channel 01 or 21 isn’t available, try this method:
-
Ignition ON with Working Key: Insert a working key into the ignition and turn it to the ON position without starting the car.
-
Access Measuring Blocks: Select [46 – Cent. Conv.] or [35 – Cent. Locking], then go to [Meas. Blocks – 08]. Enter group “003” (or “007” in some vehicles) and select [Go!]. Field 2 indicates the number of matched remotes and their memory positions.
-
Lock the Car: 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.
-
Press Unlock: Within 5 seconds, press the UNLOCK button on the new key multiple times. The number of presses should correspond to the next available memory position. For example, if field 2 showed “0001”, press the unlock button twice to program the new key to position 2. The car might acknowledge this.
-
Unlock and Cycle Ignition: Wait 5 seconds, press unlock again to unlock the door, turn the ignition OFF, and remove the old key. Test the new key by locking and unlocking the car. Then, insert the new key in the ignition, turn it ON (don’t start), and recheck Measuring Blocks group “003” to confirm the new key is programmed.
Clearing Existing Matched Remotes with VCDS
If necessary, you can clear existing key fob programming:
-
Access Adaptation: Select [46 – Cent. Conv.] or [35 – Cent. Locking], then go to [Adaptation – 10].
-
Clear Channel 00: Enter channel “00”, select [Read], then [Save]. Confirm you want to save a value of “0” when prompted. This will erase all programmed remotes, requiring you to program all keys again using one of the methods above.
Important Considerations for VCDS Key Fob Programming
Remember to always code new keys into free memory positions (indicated by a “0” in Group 003, Field 2). Using an occupied position will overwrite the existing key. This guide provides general instructions. Always refer to your vehicle’s factory repair manual for specific procedures and safety information. Using VCDS incorrectly can potentially damage your vehicle’s systems. Proceed with caution and at your own risk.
