Steering wheel heating (Discovery 3)

The driver can control the steering wheel heating function using the switch on the steering wheel. Depending on the equipment variant, the switch is either a dual function switch or a separate switch.

Steering wheel heating switches

The heated steering wheel icon in the switch will illuminate as follows:

• If the steering wheel heating is on, the icon lights up amber,
• If the heated steering wheel and headlights are off, the icon is off,
• If the steering wheel heating is off and the headlights are on, the icon will be green.

Heated steering wheel, control chart

NOTE: A = Permanent wired connection

Item name	Spare part number	Description
1		Battery
2		Battery Electrical Junction Box (fuse)
3		ignition switch
4		Central electrical box (fuse)
5		Movable contact group
6		Steering wheel heater module
7		Steering wheel heating element
8		Steering wheel heat sensor
9		Steering wheel heating switches

A maintenance-free heating element is integrated into the steering wheel to distribute heat evenly around the steering wheel rim. The heat sensor, also located in the steering wheel rim, is controlled by the steering wheel heater module located under the right steering wheel switch box.

The heating element is activated when the driver presses the switch on the steering wheel. The switch provides an input signal to the steering wheel heater module, which responds to this signal by sending an output signal to the heater element. The heater module uses signals from the heat sensors to control the operation of the heating element, maintaining the surface temperature of the steering wheel at approximately 30°C (86°F).