Toyota Highlander Service Manual: Location

Toyota Highlander Service Manual / Seat / Seat heater system / Location

LOCATION

PROBLEM SYMPTOMS TABLE

Symptom	Suspected Area
Driver's and passenger's seat heaters do not warm up	SEAT HTR fuse IG1 fuse Seat heater relay Wire harness
Only driver's seat heater does not warm up	Seat heater (front) switch LH Front seat cushion Cover LH (seat cushion heater assy LH) Front seatback cover LH (seatback heater assy LH) Wire harness
Only passenger's seat heater does not warm up	Seat heater (front) switch RH Front seat cushion Cover RH (seat cushion heater assy RH) Front seatback cover RH (seatback heater assy RH) Wire harness

Inspection

1. INSPECT SEAT HEATER (FRONT) SWITCH LH (a) Check the resistance between the terminals when the switch is operated. Standard: If the result is not as specified, replace the seat heater sw ...

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Inspection
1. INSPECT THERMOSTAT HINT: The valve opening temperature is stamped on the thermostat. (a) Immerse the thermostat in water and gradually heat the water. (b) Check the valve opening temperature. Valve opening temperature: 80 to 84 C (176 to 183 F) If the valve opening temperature is ...