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Home >> Acura >> 2008 >> MDX V6-3.7L >> Repair and Diagnosis >> Accessories and Optional Equipment >> Antitheft and Alarm Systems >> Keyless Entry >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> 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

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.

Do the horns 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.

NO - Replace the transmitter.