Seat Heater Cushion
WARNING: This page is about a different car, the 2003 Lexus RX 300 and 2002 Lexus RX 300. However, it is still accessible from the selected car via links, so may be relevant.
- Disconnect the seatback heater from the seat cushion heater.
- Heat the thermostat with a light. See Fig 1.
- Inspect the seat cushion heater continuity between terminals. See INSPECTING SEAT HEATER CUSHION CONTINUITY table.
INSPECTING SEAT HEATER CUSHION CONTINUITY
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| A1 - B3 | Constant | Continuity |
| A2 - B4, A3 - B2 | Seat Heater Temp. Below 77-95°F (25-35°C) | Continuity |
| A3 - B2 | Seat Heater Temp. Below 115-129°F (46-54°C) Or More | No Continuity |
| A2 - B1 | Seat Heater Temp. Below 97-111°F (36-44°C) Or More | No Continuity |