1. Turn the ignition key to the "ON" position, but do not start the engine.
2. Press and hold the "OK" button on the instrument cluster.
3. While holding the "OK" button, turn the ignition key to the "OFF" position, then back to the "ON" position.
4. Release the "OK" button.
5. The oil light should now be reset.
If the oil light does not reset, you may need to take your vehicle to a Land Rover dealer to have it reset.