Electrically operated heating coils may be incorporated directly into the seat cushion (1) and the seatback covers.
Power to the coils is directed through a relay. The relay is mounted under the seat, near the motor assemblies.
If diagnosis shows a non-functioning heater coil, replace the entire cover. Refer to Front Seat Back Cushion Cover and Cushion Pad Replacement or to Front Seat Cushion Replacement .