How to use KEYDIY KD-X4 to add a 5D transponder key to Volkswagen and Audi?
Check the detailed operation below.
Required Hardware:
- KEYDIY KD-X4 5-in-1 Key Programmer
- KEYDIY KD-X4 8-pin Adapter Board
- Target 5D Transponder Key Blank
- Original Vehicle Key (with 5D chip)
- Soldering Equipment and Connecting Wires
Required Software/Firmware:
- KEYDIY Mobile Application: Version 8.7.1 or later
- KD-X4 Firmware: Version 1.53 or later
Procedure
1. Device Connection:
Launch the KEYDIY application on your mobile device.
Enable Bluetooth and establish a connection with KD-X4 unit via:
Bluetooth Settings > KD Remote Control Devices
Verify a successful pairing under “Paired Devices.”
2. Navigation to Function:
From the application’s main interface, select “Immo Programming”.
Then navigate through the following path:
VOLKSWAGEN > Select by Type > 5C/5D Immobilizer System > Start Execution.
3. Process Initiation:
Select the option “Read the original car key and generate a dealer key”.
The application will subsequently display a detailed wiring schematic.
Proceed to the next step based on this diagram.
4. Wiring Configuration:
Referencing the on-screen schematic:
Connect wires to the three designated pins on the top row of the adapter board’s front side.
Establish two additional connections as indicated.
Solder the wires from the adapter board to their corresponding contact points on the key blank’s circuit board.
Verify all connections against the diagram for accuracy before proceeding.
5. Data Extraction from Original Key:
Insert the original vehicle key into the adapter socket.
Execute the “Read Chip Data” command.
Upon successful completion, the key data will be uploaded and a unique Service Code will be generated.
It is imperative to record this code.
6. Programming the New Key Blank:
Ensure all wiring remains correctly attached.
Insert the new key blank into the adapter.
Within the software, select the “Original Key (Non-Vehicle)” option.
Critical Note:
- The “KD ZB Smart Key” option is compatible exclusively with 5C chips.
- For 5D keys, the procedure described herein must be followed.
Initiate the write process.
A “Write successfully” confirmation message indicates successful programming of the key blank.
7. Final Vehicle Immobilizer Matching:
Carefully disconnect all wiring and reassemble the newly programmed key.
Proceed to the vehicle. Using either KD-X4‘s integrated “Key Learning” function or an external KD-Mate device
Perform the final step of synchronizing the new key with the vehicle’s immobilizer system, following the on-screen instructions which will require both the new and original keys.
Additional Note:
For model year 2024 and newer vehicles, it may be necessary to first unlock SFD (Secured Feature Deactivation) before the key learning procedure can be performed.
8. Verification
The procedure is concluded successfully when the newly programmed key can start the vehicle’s engine.