Steering Wheel Heater Switch
The steering wheel heater is switched on by a button on the left-hand side of the steering column between the two steering column stalks.
It can be switched on provided the electrical system status is at least terminal 15. An LED on the switch indicates when the steering wheel heater is on.
The steering wheel heater consists of a coil heater element in the steering wheel rim.
A temperature sensor (PTC sensor) in the steering wheel sends the temperature signal back to the steering wheel electronics module.