Lost or need to replace your Aston Martin Key Fob? For Gaydon era Aston Martin models, you might be able to program a new key fob yourself using a ThinkDiag diagnostic tool. This guide will walk you through the process, ensuring you can get back on the road with a working remote.
Before you begin, the most crucial element is your key code. This code is essential for programming a new key fob to your Aston Martin. You should have received a card similar to the one shown below when you got your car.
Image: A sample Aston Martin key code card. This card contains the necessary 8-character code required to program a new key fob to your vehicle.
Without this key code, programming a new fob is unfortunately not possible. Locate your key code card before proceeding. The card typically contains two 8-character codes; either one should work, but you might need to try both.
Here’s a step-by-step guide to programming your Aston Martin key fob with ThinkDiag:
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Locate the Door Module Port: The ThinkDiag tool needs to be connected to the correct port. For most Gaydon era Aston Martins, including the V8 Vantage (’09 LHD model as shown in the original guide), this port is located in the passenger side footwell, near the center console. Using the driver’s side port may result in communication errors.
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Turn Ignition ON (Engine OFF): Turn your Aston Martin’s ignition to the “ON” position without starting the engine. For models with an ECU/Key insert (like the ’09 V8 Vantage), insert the key into the dash but do not press and hold to start the car. Consult your owner’s manual if you’re unsure how to achieve ignition ON without engine start in your specific model.
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Connect ThinkDiag and Launch Software: Plug your ThinkDiag device into the door module port and open the ThinkDiag software on your phone or tablet. Select the Aston Martin module and allow the software to automatically detect your vehicle model.
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Navigate to Special Functions: Once connected and your car is identified, go to the “Special Functions” menu within the ThinkDiag software.
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Select “Key Fob Learn/Clear”: Within the Special Functions menu, find and select the “Key Fob Learn/Clear” option. This is where you’ll manage your key fob programming.
Image: A screenshot from the ThinkDiag software showing the “Special Functions” menu with “Key Fob Learn/Clear” highlighted. This function is crucial for accessing key programming options.
- Verify Communication with “Read”: Inside the “Key Fob Learn/Clear” menu, use the “Read” command first. This step is crucial to ensure your ThinkDiag is properly communicating with your Aston Martin’s door module. If you encounter an error, try unplugging and replugging the ThinkDiag, restarting the software, and repeating the connection process. Successful communication will display a list of currently programmed keys and empty slots (represented by all zeros).
Image: A display from the ThinkDiag software illustrating the key fob function menu. Options such as “Read,” “Erase,” and “Write” are visible, allowing users to manage programmed keys.
- Program New Key with “Write”: Return to the “Key Fob Learn/Clear” menu and select the “Write” command. Enter the 8-character key code from your key code card when prompted. After entering the code, your new Aston Martin key fob should be programmed and the lock/unlock buttons should now function with your car.
Image: A ThinkDiag software interface displaying key slots. This screen shows programmed key codes and available empty slots, useful for managing key programming capacity.
Important Notes:
- Key Code is Mandatory: Without the key code, this programming method will not work. There is no known way to retrieve the key code from the key fob itself. If you’ve lost your key code, you will likely need to purchase a new key and potentially have it programmed by a dealership.
- Full Key Slots: The “Read” function is helpful for checking the number of programmed keys and available slots. If all slots are full and you want to add a new key, you’ll need to erase an existing slot. Be extremely cautious when erasing slots, as you risk deleting one of your working keys if you don’t have the codes for all existing keys.
- Communication Issues: Encountering communication errors with ThinkDiag can be frustrating. Ensure you are using the correct door module port, have a stable connection, and potentially restart the software and device if needed.
By following these steps carefully, you can program a new Aston Martin key fob using a ThinkDiag tool. Always double-check your connections and key code to ensure a smooth programming process. If you are uncomfortable with these steps, consulting a professional locksmith or Aston Martin dealership is recommended.
