Range Rover (LM) V8-4.4L (2009)
/v8-4.4l/Page-2545001.png)
Headlamp Switch: Description and Operation
Lighting Control Switch
Lighting Control Switch
The lighting control switch is located in the instrument panel between the steering column and the driver's door. The switch comprises a four position
rotary switch for controlling side lamps and headlamps, a thumbwheel rheostat which manually controls the instrument panel and interior switch night
illumination, and momentary push switches for front and rear fog lamps.
The rotary side and headlamp control switch has three connections to the LCM. One connection supplies a reference voltage to the switch contacts. The
two remaining connections supply a combination of earth paths to the LCM for the side lamp, headlamp and 'AUTO' selection contacts.
The front and rear fog lamp switches operate in a similar way, completing earth paths to the LCM when the switch is pressed. The fog lamp switches are
momentary, non-latching switches which briefly complete an earth path which is sensed by the LCM.
Lighting Control Switch Illumination
When the ignition is in position I or II, the switch legends on the lighting control switch are illuminated at maximum brightness when the lighting control
switch is in the 'O' (off) position. When the lighting control switch is rotated to the side, headlamp or AUTO position the legend illumination is dimmed.
Lighting Control Switch/High Beam Functionality
The functionality of the high beam differs between halogen and bi-xenon headlamps. This is shown in the following table:
