This guide outlines the steps to program a spare smart key to 2021- Nissan Sentra using Xhorse VVDI Key Tool Plus.
Tools Required
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Xhorse VVDI Key Tool Plus (or compatible key programmer)
Step-by-Step Procedure
1. Access the Vehicle’s OBD2 Port
- Connect the 16+32 cable to BCM under the dash.
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Locate the OBD2 port (typically under the dashboard near the driver’s side).
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Connect the VVDI Key Tool Plus to the port using the OBD2 cable.
2. Power On the Tool and Select Vehicle
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Turn the ignition to ON (do not start the engine).
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Open the VVDI software and select:
- IMMO- Nissan- US Nissan- Sentra (B18)- 2021/08- Smart Key system
- Choose 16+32 cable or 40 pin cable. Here we use 16+32 cable.
3. Read Immobilizer Data
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Follow the software prompts to read the ECU and immobilizer data.
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Save this data to avoid errors during programming.
4. Prepare the Blank Key
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Place the blank key in the tool’s key programmer slot.
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Select “Generate New Key” and wait for the key to be initialized.
5. Write Key to Vehicle
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Upload the immobilizer data back to the vehicle.
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Confirm the key is recognized by testing:
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Lock/unlock doors.
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Start the engine.
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6. Final Checks
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Ensure all functions work (remote start, trunk release, etc.).
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Disconnect the tool and cycle the ignition.
Troubleshooting Tips
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If the key isn’t recognized, recheck immobilizer data or try a different blank key.
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For software errors, update the VVDI tool firmware.