Horn does not sound and/or the headlights do not flash when the PANIC button on the transmitter is pressed

Keyless/Power Door Locks/Security System Symptom Troubleshooting - The horn does not sound and/or the headlights do not flash when the PANIC button on the transmitter is pressed

The horn does not sound and/or the headlights do not flash when the PANIC button on the transmitter is pressed

NOTE: Before troubleshooting, check the B-CAN DTCs. If any DTC is indicated, troubleshoot the indicated DTC first.

1. Determine possible failure area (MICU, others):

Determine possible failure area (MICU, others)
-1. Press the PANIC button.

Do the horns sound?
-YES- Go to step 3.
-NO- Go to step 2.

2. Horn operation check:

Horn operation check
-1. Press the horn button.

Do the horns sound?
-YES- Replace the transmitter, then register the new transmitter Testing and Inspection.
-NO- Check the horn circuit.

3. MICU check:

MICU check
-1. Turn the headlight switch ON.

Do the headlights come on?
-YES- Intermittent failure, the system is OK at this time.
-NO- Check the lighting circuit. Do the MICU input test.