Principle Of Operation
The front seat heaters are adjustable through three ranges of heating output temperature.
Pressing the respective seat heater button once provides stage 1:
- All three LEDs illuminate and the heating elements are provided regulated output current producing a seat temperature of 111°F.
Pressing the button a second time provides stage 2:
- The top LED switches off and the heating elements are regulated to an output temperature of 102°F.
Pressing the button a third time provides stage 3.
- The top and middle LEDs are off and the heating elements are regulated to an output temperature of 95°F.
The SZM monitors the seat heating element temperature via an NTC feedback signal to regulate the output current which maintains the seat temperature.
Seat heating is switched off by pressing the button a fourth time, pressing and holding the button for more than 1 second or when the ignition is switched off.