Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Hazard and Horn Reminder
Power is supplied at all times
- to horn relay terminal 2
- through 10A fuse (No. 32, located in the fuse and fusible link box).
When BCM receives LOCK or UNLOCK signal from key fob with all doors closed, BCM sends horn chirp signal to IPDM E/R.
IPDM E/R grounds horn relay
- to horn relay terminal 1
- through IPDM E/R terminal 51, and
- to BCM terminals 45 and 46 from hazard warning lamp system
Horn relay is now energized, and hazard warning lamp flashes and horn sounds as a reminder
The hazard and horn reminder has C mode (horn chirp mode) and S mode (non-horn chirp mode).
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.