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.
Seat Heaters System Description - Failsafe Function
Thermistor Circuit Open Failure
When the seat heater control unit detects a thermistor wire break, it stops the heater output 90 seconds after detection and turns off the seat heater switch indicator.
Thermistor Circuit Short Failure
When the seat heater control unit detects a thermistor short-circuit, it stops the heater output immediately after detection and turns off the seat heater switch indicator.
Heater Circuit Current Error
When the seat heater control unit detects an abnormal current value in the heater circuit, it stops the heater output immediately after detection and turns off the seat heater switch indicator.
NO RELATED
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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.