Headlight Assembly: Adjustment

WARNING: This page is about a different car, the 2007 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT HEADLIGHT ASSEMBLY
1. Place the vehicle in the following conditions:
  - The area around the headlight is not deformed.
  - The vehicle is parked on a level surface.
  - Tire inflation pressure is at the specified value.
  - A driver is in the driver's seat and the vehicle is in a state ready for driving (fuel tank is full).
  - The vehicle has been bounced several times.
2. Check the headlight's aim.
  HINT:
  
  Perform the following procedures while referring to the illustration below.
  1. Prepare a piece of thick white paper.
  2. Stand the paper perpendicular to the ground at a location 3 m (9.8 ft) from the headlights.
  3. Ensure that the center line of the vehicle and the paper surface form a 90° angle as shown in the illustration below.
  4. Draw a horizontal line (H line) on the paper at the position where the high beam light from the headlights will contact the paper.
  5. Draw a vertical line (V line) on the paper at the position where the center of the vehicle is located.
  6. Draw 2 vertical lines (V RH and V LH lines) on the paper at the position where the light from the headlights will contact the paper.
  7. Mark the low beam center marks on the paper. Then draw a horizontal line (H RH and H LH lines) through the marks. This is where the low beam light from the headlights will contact the paper.
  8. Cover or disconnect the connector of the headlight on the opposite side to prevent light from the headlight not being inspected from affecting headlight aiming inspection.
    NOTE: Do not keep the headlight covered for more than 3 minutes. The headlight lens is made of synthetic resin, and may easily melt or be damaged due to heat.
  9. Start the engine.
  10. Turn on the headlights.
  11. Check that the light from the headlights properly strike the positions shown in the illustration. If not, adjust the lights vertically.
    
    Fig 1: Identifying Headlight Aiming Position
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    HINT:
    
    Adjust each aim aspect of the RH and LH headlights as shown above.
    
    Fig 2: Identifying Adjusting Bolt
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Adjust the low beam headlight vertically.
  1. Using adjusting bolt B, adjust the headlight aim to the specified range.
    HINT:
    
    Rotating a screwdriver clockwise moves the optical axis aim downward and rotating it counterclockwise moves it upward.
4. Adjust the low beam headlight horizontally.
  1. Using adjusting bolt A, adjust the headlight aim to the specified range.