Temperature control unit (Seats)
- Make
- Land Rover
- Model
- Discovery II (UK)
- Section
- Description and operation › Temperature control unit
Temperature control unit
The temperature control unit is only fitted to vehicles with electric seats. Feed back of the seat temperature is via a Negative Temperature Coefficient (NTC) sensor within the seat cushion. Resistance of this sensor changes with the temperature of the seat cushion allowing the temperature control unit to lower or raise the voltage to the seat heater elements to raise or lower their temperature.
An ignition feed is supplied via the seat heater switch. The temperature sensor supplies an input. Output is a supply to the cushion heater element and an earth.
Thermostat
On vehicles with non electric seats, the temperature is controlled by a thermostat located in the seat cushion. The thermostat interrupts the power supply when it reaches a pre-determined temperature.
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