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 and relays related to this system before inspecting the suspected areas below.
| Symptom | Suspected Area | See page |
|---|---|---|
| Front seat heater does not operate (for driver) | Seat heater switch (for LH) | |
| Front seat cushion heater (separate type front seat cushion cover) | ||
| Front seatback heater (separate type front seatback cover) | ||
| Seat heater control sub-assembly LH | - | |
| Wire harness or connector | - | |
| Front seat heater does not operate (for front passenger) | Seat heater switch (for RH) | |
| Front seat cushion heater (separate type front seat cushion cover) | ||
| Front seatback heater (separate type front seatback cover) | ||
| Seat heater control sub-assembly RH | - | |
| Wire harness or connector | - | |
| Rear seat heater does not operate (for LH)*1 | Seat heater switch (cooler control switch assembly)*2 | - |
| Seat heater switch (for LH)*3 | - | |
| Rear seat cushion heater LH (bench type rear seat cushion cover)*2 | ||
| Rear seat cushion heater LH (bench type rear seat cushion cover)*3 | ||
| Rear seatback heater LH (separate type rear seatback cover)*2 | ||
| Rear seatback heater LH (separate type rear seatback cover)*3 | ||
| Wire harness or connector | - | |
| Rear seat heater does not operate (for RH)*1 | Seat heater switch (cooler control switch assembly)*2 | - |
| Seat heater switch (for RH)*3 | - | |
| Rear seat cushion heater RH (bench type rear seat cushion cover)*2 | ||
| Rear seat cushion heater RH (bench type rear seat cushion cover)*3 | ||
| Rear seatback heater RH (separate type rear seatback cover)*2 | ||
| Rear seatback heater RH (separate type rear seatback cover)*3 | ||
| Wire harness or connector | - |
*1: w/ Rear Seat Heater
*2: w/ Rear Power Seat
*3: w/o Rear Power Seat