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 remote 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):

  - 1. Press the PANIC button.

  Do the horns sound?

  YES 

  Go to step 3.

  NO 

  Go to step 2.

• 2. Horn operation check:

  - 1. Press the horn button.

  Do the horns sound?

  YES 

  Replace the remote, then register the new transmitter .

  NO 

  Check the horn circuit.

• 3. 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 .