SEAT HEATER SYSTEM PROBLEM SYMPTOMS TABLE

Tech Tips

Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
Inspect the fuses related to this system before inspecting the suspected areas below.

Front Seat
Symptom	Suspected Area	Link
Seat Heater LH does not Operate	Seat heater switch LH	Click here
	Front seat cushion heater assembly LH (for Manual Seat)	Click here
	Front seat cushion heater assembly LH (for Power Seat)	Click here
	Front seatback heater assembly LH (for Manual Seat)	Click here
	Front seatback heater assembly LH (for Power Seat)	Click here
	Harness or connector	-
Seat Heater RH does not Operate	Seat heater switch RH	Click here
	Front seat cushion heater assembly RH (for Manual Seat)	Click here
	Front seat cushion heater assembly RH (for Power Seat)	Click here
	Front seatback heater assembly RH (for Manual Seat)	Click here
	Front seatback heater assembly RH (for Power Seat)	Click here
	Harness or connector	-

Rear Seat (w/ Rear Seat Heater)
Symptom	Suspected Area	Link
Rear LH side seat heater does not operate	Rear heater relay LH (S/HTR R/L)	-
	Rear seat heater switch LH	Click here
	Seat heater assembly LH (seat cusion side)	Click here
	Seat heater assembly LH (seatback side)	Click here
	Air conditioning control assembly	Click here
	Air conditioning amplifire assembly	Click here
	Harness or connector	-
Rear RH side seat heater does not operate	Rear heater relay RH (S/HTR R/R)	-
	Rear seat heater switch RH	Click here
	Seat heater assembly RH (seat cusion side)	Click here
	Seat heater assembly RH (seatback side)	Click here
	Air conditioning control assembly	Click here
	Air conditioning amplifire assembly	Click here
	Harness or connector	-
Seat heater does not operate for rear LH side and rear RH side seat	Proceed to "Air Conditioning System (for Automatic Air Conditioning System)"	Click here
	Air conditioning control assembly	Click here
	Air conditioning amplifire assembly	Click here
	Harness or connector	-