1. Turn off the ignition and allow the car to sit for at least 30 seconds.
2. Open the hood and locate the negative battery terminal.
3. Disconnect the negative battery terminal using a wrench or socket wrench.
4. Wait for at least 1 minute.
5. Reconnect the negative battery terminal.
6. Close the hood and turn on the ignition.
The Mitsubishi Diamante computer will now be reset.