1. Insert the Correct Key: Make sure you are using the correct key for the vehicle. Using an incorrect key may trigger the alarm.
2. Cycle the Ignition: Cycle the ignition key from "Off" to "On" and back to "Off" three times within a short timeframe (usually around 5 seconds). This quick succession of turning the ignition on and off may disarm the alarm.
3. Check for a Valet Key: Some Toyota vehicles have a valet key that can be used to deactivate the alarm. If you have a valet key, try inserting it into the ignition and turning it to the "On" position for a few seconds. This may reset the alarm.
4. Look for a Reset Button: Some Toyota models have a reset button for the alarm. Check your vehicle's owner's manual to find the location of the reset button and press it.
5. Disconnect Battery: Disconnecting the vehicle's battery for a short time can sometimes reset the alarm. Disconnect the negative battery terminal for about 15 minutes and then reconnect it. This should reset the alarm and allow the vehicle to start.
If none of these steps work, or if you do not have an owner's manual, it is recommended that you contact an authorized Toyota dealership or a reliable auto mechanic who is familiar with Toyota vehicles to assist you in resetting the alarm on your 1993 Toyota Forerunner.
