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.
System Description
- GENERAL
The defogger system's thin heater wires are attached to the inside of the rear window and defog the window surface quickly. The indicator light illuminates while the system is operating. The system automatically turns off after approximately 15 minutes.
HINT:
The rear window defogger is linked with the mirror defogger.
- FUNCTION OF MAIN COMPONENT FUNCTION OF MAIN COMPONENT
Component Outline Defogger switch Located on A/C control, detects defogger switch operation and transmits signals to front light ECU (front controller) through CAN line DEFOG relay Receives rear defogger activation request signals from front light ECU (front controller) through air conditioning amplifier via CAN line and supplies power to rear window defogger Rear window defogger Receives power from DEFOG relay and heats defogger wires - DESCRIPTION DESCRIPTION CHART
Function Outline Defog rear window surface - Receives rear defogger activation request signals from front light ECU (front controller) through air conditioning amplifier via CAN line and supplies power to rear window defogger
- Receives power from DEFOG relay and heats defogger wires
Use the Manual With the Right Hardware
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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.
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