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Home >> Land Rover >> 2021 >> Discovery S >> Repair and Diagnosis >> Electrical >> Gauges >> Message Center -- Discovery/L462 >> Message Center (G2284094) >> Diagnosis And Testing >> Information And Message Center (G2363575) >> Pinpoint Tests >> Pinpoint Test B: Head Up Display (HUD) Rain/Light Sensor

Pinpoint Test B: Head Up Display (HUD) Rain/Light Sensor

  1. B1: HUD - WINDSHIELD 
    1. Inspect the windshield directly above the rain/light sensor for dirt/dust

      Is the windshield directly above the rain/light sensor clean?

      Yes:  GO to  B2.

      No:  Check and clean the windshield as required

  2. B2: HUD BRIGHTNESS - MANUAL ADJUSTMENT CHECK 
    NOTE: The customer may have reported that driving at night, the HUD brightness will not adjust using the instrument panel cluster light dimmer switch
    1. Using the steering wheel switchpack (menu control), select HUD brightness  from the Head up Display  menu and follow the on-screen instructions
    2. Switch on the exterior lights and operate the instrument panel cluster light dimmer switch

      Is it possible to adjust the HUD  brightness with the steering wheel switchpack (menu control), or with the instrument panel cluster light dimmer switch?

      Yes:  Advise the customer HUD  brightness can be adjusted with either the steering wheel switchpack (menu control), or with the vehicle lights switched on using the instrument panel cluster light dimmer switch

      No:  GO to  B3.

  3. B3: HUD - RAIN/LIGHT SENSOR CHECK 
    1. Refer to the relevant service information and remove the rear view mirror mounting bracket plastic trim (the part number label is now visible)
      G11735869Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC
    2. Check the label for a large capital letter (printed on the bottom right hand corner)
      • A denotes non HUD  rain/light sensor
      • B denotes HUD  rain/light sensor

      Has the sensor a large capital 'B' printed on the bottom right hand corner?

      Yes:  Using the Jaguar Land Rover approved diagnostic equipment, check the central junction box for related DTC  s and refer to the relevant DTC  index

      No:  Incorrect sensor installed, check and install the correct rain/light sensor as required