Land Rover Discovery Owners & Service Manuals

Land Rover Discovery: Front Fog Lamps

Front Fog Lamps

  1. LED light source
  2. Lens
  3. Attachment holes
  4. Electrical connector

The two front fog lamps are available as an option or standard fitment on vehicles fitted with xenon headlamps and headlamp washer jets.

The front fog lamps are located in apertures in the front bumper. Each lamp is secured in the bumper with Torx screws which are covered with a removable finisher. Each fog lamp has an adjuster which is used to set the fog lamp to the correct alignment.

The fog lamp uses an LED light source.

The front fog lamps are controlled by the CJB. When the ignition is in ignition power mode 6 or above and the lighting control switch is in the side lamp or headlamp position or AUTO position (and Rain/Light Sensor is requesting low beam), the fog lamp switch can be rotated to activate the front fog lamps. A front fog lamp warning indicator is illuminated in the Instrument Cluster (IC) when the front fog lamps are active.

Front Fog Lamp Functionality (NAS and Canadian Markets Only)

The front fog lamps operate as described previously but with the following differences which cover local laws governing lamp usage.

If the low beam headlamps and the front fog lamps are on at the same time, when the high beam headlamps are switched on, the front fog lamps will be automatically switched off. When the high beam headlamps are subsequently switched off, the front fog lamps will be switched on automatically.

NOTE:

NOTE: The front fog lamps will also be switched off if the high beam 'flash' function is operated.

REAR FOG LAMP

REAR FOG LAMP

  1. Rear fog lamp bulb holder
  2. Rear fog lamp bulb
  3. Attachment holes
  4. Attachment

The rear fog lamp is located in the bumper and uses a bayonet fitting bulb.

The rear fog lamp is controlled by CJB. When the ignition switch is in power mode 6 or greater and the lighting control switch is in the side lamp or headlamp position, the rear fog lamp switch on the left steering column multifunction switch can be operated to activate the rear fog lamps. A rear fog lamp warning indicator is illuminated in the Instrument Cluster (IC) when the rear fog lamps are active.

HIGH MOUNTED STOP LAMP

HIGH MOUNTED STOP LAMP

The HMSL is located in the tailgate. Access to the lamp is by removal of the upper tailgate interior trim panel. After releasing the lamp retaining clips, the lamp can be removed from outside the vehicle.

The lamp comprises a plastic housing with a red coloured lens. The lamp is illuminated by LEDs.

The HMSL is activated, along with the tail lamp stop lamps, when the ignition is in power mode 6 or above and the stop lamp switch is active (by pressing the brake pedal).

The HMSL and the stop lamps can also be activated by the ABS when HDC is active (if fitted). A signal on the HS CAN bus from the ABS control module is passed to the CJB which supplies power to the stop lamps.

LICENSE PLATE LAMPS

LICENSE PLATE LAMPS

Two license plate lamps are fitted in the tailgate handle, above the license plate in the upper tailgate. Each lamp uses LEDs.

The lamps are secured in the upper tailgate handle with integral clips. The lamps can be released from the handle using a small, flat blade screwdriver.

The license plate lamps are active at all times when the side lamps are switched on.

SIDE REPEATER LAMPS

SIDE REPEATER LAMPS

The side repeater lamps are located in the external rear view mirrors.

The side repeater lamps use LEDs. The side repeater lamps have the same functionality as the front and rear turn signal indicator lamps and are operated by the left steering column multifunction switch or by the hazard warning lamp switch. The steering column multifunction switch is only active with power mode 6, the hazard warning lamp switch is active at all times, regardless of the power mode. When active, the side repeater lamps will flash at a frequency cycle of 400ms on and 400ms off. If a side repeater lamp fails, the turn signal indicator lamps continue to flash at the normal rate.

HEADLAMP LEVELLING CONTROL MODULE

HEADLAMP LEVELLING CONTROL MODULE

The HLCM is located on the bulkhead panel, adjacent to the right pillar. The HLCM controls headlamp LEVELLING and, where fitted, the AFS headlamps and the static bending lamps. The HLCM is connected to the HS CAN and receives inputs from other vehicle inputs from the other vehicle systems on the status of the parameters that follow:

  • Height sensors
  • Steering angle
  • Vehicle speed
  • Headlamp status
  • Engine running
  • Reverse gear selected.

The HLCM is connected to each AFS on a private LIN bus.

FRONT AND REAR HEIGHT SENSORS

FRONT AND REAR HEIGHT SENSORS

The height sensors used by the headlamp LEVELLING system are both located on the right side of the vehicle.

Each sensor has three connections with the Integrated Suspension Control Module (ISCM); power, ground and signal.

IMAGE PROCESSING CONTROL MODULE (IPCM) CAMERA

IMAGE PROCESSING CONTROL MODULE (IPCM) CAMERA

Vehicles with the Image Processing Control Module (IPCM) feature have an IPCM camera installed in the covers of the rear view mirror support, with the lens directed through the windshield. The camera is connected to the IPCM, integrated into the body of the rear view mirror.

The camera is a low resolution image sensor that detects headlamps and tail lamps of the vehicles ahead. The IPCM evaluates the image data, checking for light intensity and location. Depending on the image data, the control module then sends a low or high beam request message to the CJB via the Medium Speed CAN bus. The CJB then controls the shutter in the Xenon projector module accordingly.

STOP LAMP SWITCH

STOP LAMP SWITCH

The stop lamp switch is a two pole switch mounted in the brake pedal bracket and operated by the brake pedal. The output connections of the two poles are hardwired to the CJB. The input connection of one pole is a hardwired signal feed from the CJB. The input connection of the second pole is hardwired to ground. The CJB compares the signals from the two poles to confirm the status of the stop lamp switch, which it uses to operate the stop lamps.

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