Operation CHARM: Car repair manuals for everyone.

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. Press the PANIC button.

Does the horn sound?

YES - Go to step 3.

NO - Go to step 2.

2. Press the horn button.

Does the horn sound?

YES - Go to step 3.

NO - Check the horn circuit.

3. Turn the headlight switch ON.

Do the headlights come on?

YES - Go to step 4.

NO - Check the lighting circuit.

4. Do the transmitter test.

Is the transmitter OK?

YES - Substitute a known-good MICU and recheck. If there is still a problem, substitute a known-good immobilizer-keyless control unit and recheck.

NO - Replace the transmitter.