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Home >> Jaguar >> 2009 >> XKR 2D Convertible >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> A/C Compressor >> Control Components >> Control Components >> Control Components - Description & Operation >> Principles Of Operation >> Steering Wheel Heater

Steering Wheel Heater

The steering wheel heater has 1 heat setting and can be turned on and off by pressing the soft button located on the seat heater TSD screen. The on/off status of the steering wheel heater is relayed to the vehicle occupants through the TSD. When the ignition is switched off, the heater will reset to off.

Power for the heater element is supplied by the central junction box (CJB) on receipt of a request from the automatic temperature control (ATC) module over the medium speed controller area network (CAN) bus. Temperature control for the heater element is provided by the steering wheel heater control module which receives a temperature feedback signal from a negative temperature coefficient (NTC) thermistor located within the steering wheel.

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