HEADLIGHT ASSEMBLY ADJUSTMENT

Tech Tips

It is possible that a bulb is incorrectly installed, affecting headlight aim. Bulb installation should be considered prior to performing the adjustment procedure.

PREPARE VEHICLE FOR HEADLIGHT AIM ADJUSTMENT
1. Prepare the vehicle:
  - Ensure there is no damage or deformation to the body around the headlights.
  - Fill the fuel tank.
  - Make sure that the oil is filled to the specified level.
  - Make sure that the coolant is filled to the specified level.
  - Inflate the tires to the appropriate pressure.
  - Unload the trunk and vehicle, ensuring that the spare tire, tools and jack are in their original positions.
  - Sit a person of average weight (75 kg, 165 lb) in the driver's seat.
  - Vehicles with manual headlight beam level control system should be adjusted to "0".

PREPARE FOR HEADLIGHT AIMING

Prepare the vehicle:
- Place the vehicle in a location that is dark enough to clearly observe the cutoff line. The cutoff line is a distinct line, below which light from the headlights can be observed and above which it cannot.
- Place the vehicle at a 90° angle to the wall.
- Create a 25 m (82 ft.) distance between the vehicle (headlight bulb center) and the wall.
- Make sure that the vehicle is on a level surface.
- Position the front wheels straight ahead.
- Bounce the vehicle up and down to settle the suspension.
  
  Note
  
  A distance of 25 m (82 ft.) between the vehicle (headlight bulb center) and the wall is necessary for proper aim adjustment. If sufficient space is not available, secure a distance of exactly 3 m (9.84 ft.) to allow for checking and adjustment of headlight aim. (The size of the target zone will change with the distance, so follow the instructions in the illustration.)
Prepare a piece of thick white paper (approximately 2 m (6.56 ft.) (height) x 4 m (13.1 ft.) (width)) to use as a screen.
Draw a vertical line down the center of the screen (V line).
Set the screen as shown in the illustration.
Tech Tips
- Stand the screen perpendicular to the ground.
- Align the V line on the screen with the center of the vehicle.

Text in Illustration
*a	V LH Line
*b	V Line
*c	V RH Line
*d	H Line
*e	Ground

Draw base lines (H, V LH, and V RH lines) on the screen as shown in the illustration.

Tech Tips

The base lines differ for "low beam inspection" and "high beam inspection".
Mark the headlight bulb center marks on the screen. If the center mark cannot be observed on the headlight, use the center of the headlight bulb.

Text in Illustration
*A	Type A
*B	Type B
*a	Headlight bulb center mark of the high beam headlight
*b	Headlight bulb center mark of the low beam headlight

H Line (Headlight height):

Draw a horizontal line across the screen so that it passes through the center marks. The H line should be at the same height as the headlight bulb center marks of the low beam headlights.

V LH Line, V RH Line (Center mark position of left-hand (LH) and right-hand (RH) headlights):

Draw two vertical lines so that they intersect the H line at each center mark (aligned with the center of the low beam headlight bulbs).

INSPECT HEADLIGHT AIMING
1. Cover the headlight or disconnect the connector of the headlight/headlight ECU on the opposite side to prevent light from the headlight that is not being inspected from affecting the headlight aiming inspection.
  
  CAUTION:
  
  Do not disconnect the HID high voltage connector for the bulb when performing this aiming inspection.
  
  Note
  
  Do not keep the headlight covered for more than 3 minutes. The headlight lens is made of synthetic resin, which may melt or be damaged due to excessive heat.
  
  Tech Tips
  
  When checking the aim of the high beam, cover the low beam or disconnect the connector.
2. Start the engine.
3. Turn on the headlights and check if the cutoff line for each low beam matches the preferred cutoff line in the illustration.
  Tech Tips
  
  Since the low beam light and the high beam light are a unit, if the aim on the low beam is correct, the high beam should also be correct. However, check both beams just to make sure.
  
  If the alignment distance is 25 m (82 ft.):
  
  The low beam cutoff line should be within 48 mm (1.89 in.) and 698 mm (2.29 ft.) below the H line as well as 248 mm (9.79 in.) left or right of the V LH or V RH line.
  
  If the alignment distance is 3 m (9.84 ft.):
  
  The low beam cutoff line should be within 6 mm (0.227 in.) and 83 mm (3.29 in.) below the H line as well as 29 mm (1.17 in.) left or right of the V LH or V RH line.
  
  If the alignment distance is 25 m (82 ft.):
  
  The horizontal line of the preferred low beam cutoff line is 249 mm (9.79 in.) below the H line and point A of the preferred low beam cutoff line is on the V LH or V RH line.
  
  If the alignment distance is 3 m (9.84 ft.):
  
  The horizontal line of the preferred low beam cutoff line is 30 mm (1.18 in.) below the H line and point A of the preferred low beam cutoff line is on the V LH or V RH line.
4. Turn on the high beams and check if the center of intensity for each high beam matches the preferred center of the intensity in the illustration.
  Tech Tips
  
  Since the low beam light and the high beam light are a unit, if the aim on the low beam is correct, the high beam should also be correct. However, check both beams just to make sure.
  
  If the alignment distance is 25 m (82 ft.):
  
  The high beam center of intensity should be within 174 mm (6.87 in.) above and 248 mm (9.79 in.) below the H line as well as 497 mm (1.63 ft.) left or right of the V LH or V RH line.
  
  If the alignment distance is 3 m (9.84 ft.):
  
  The high beam center of intensity should be within 20 mm (0.824 in.) above and 29 mm (1.17 in.) below the H line as well as 59 mm (2.35 in.) left or right of the V LH or V RH line.

ADJUST HEADLIGHT AIMING

except HID Headlight with AFS:

Adjust the aim vertically:

Text in Illustration
*A	for Halogen Headlight:	*B	for HID Headlight:
*1	Aiming Screw A	-	-

Adjust the aim of each headlight to the specified range by turning each aiming screw A with a screwdriver.

Note

The final turn of the aiming screw should be made in the clockwise direction. If the screw is tightened excessively, loosen it and then retighten it, so that the final turn of the screw is in the clockwise direction.

Tech Tips

Since the low beam light and the high beam light are a unit, if the aim on the low beam is correct, the high beam should also be correct. However, check both beams just to make sure.
If it is not possible to correctly adjust headlight aim, check bulb, headlight unit and headlight unit reflector installation.
The headlight aim moves down when turning the aiming screw clockwise, and moves up when turning the aiming screw counterclockwise.
Confirm the direction of rotation of the aiming screw by observing it while it is being adjusted. Due to the position of the screwdriver, the direction of rotation of the adjusting screw can be different than the direction of rotation of the screwdriver being used to adjust it.

Adjust the aim horizontally:

Text in Illustration
*A	for Halogen Headlight	*B	for HID Headlight
*1	Aiming Screw B	-	-

Adjust the aim of each headlight to the specified range by turning each aiming screw B with a screwdriver.

Note

Tech Tips

Since the low beam light and the high beam light are a unit, if the aim on the low beam is correct, the high beam should also be correct. However, check both beams just to make sure.
If it is not possible to correctly adjust headlight aim, check bulb, headlight unit and headlight unit reflector installation.
Confirm the direction of rotation of the aiming screw by observing it while it is being adjusted. Due to the position of the screwdriver, the direction of rotation of the adjusting screw can be different than the direction of rotation of the screwdriver being used to adjust it.

for HID Headlight with AFS:
1. Adjust the low beam:
  1. Text in Illustration
    
    *1 Aiming Screw A
    
    Adjust the aim vertically:
    
    Adjust the aim of each headlight to the specified range by turning each aiming screw A with a screwdriver.
    
    Note
    
    The final turn of the aiming screw should be made in the clockwise direction. If the screw is tightened excessively, loosen it and then retighten it, so that the final turn of the screw is in the clockwise direction.
    Tech Tips
    
    Since the low beam light and the high beam light on each side have separate reflectors, it is necessary to check and adjust the aim separately for both.
    
    When adjusting the vertical axis of the headlight, the horizontal axis will also change. It is necessary to adjust the vertical position first, and then correct the horizontal position.
    
    If it is not possible to correctly adjust headlight aim, check bulb, headlight unit and headlight unit reflector installation.
    
    The headlight aim for the LH side moves up and to the right when turning the aiming screw clockwise, and moves down and to the left when turning the aiming screw counterclockwise.
    
    The headlight aim for the RH side moves up and to the left when turning the aiming screw clockwise, and moves down and to the right when turning the aiming screw counterclockwise.
    
    Confirm the direction of rotation of the aiming screw by observing it while it is being adjusted. Due to the position of the screwdriver, the direction of rotation of the adjusting screw can be different than the direction of rotation of the screwdriver being used to adjust it.
  2. Text in Illustration
    
    *1 Aiming Screw B
    
    Adjust the aim horizontally:
    
    Adjust the aim of each headlight to the specified range by turning each aiming screw B with a screwdriver.
    
    Note
    
    The final turn of the aiming screw should be made in the clockwise direction. If the screw is tightened excessively, loosen it and then retighten it, so that the final turn of the screw is in the clockwise direction.
    Tech Tips
    
    Since the low beam light and the high beam light on each side have separate reflectors, it is necessary to check and adjust the aim separately for both.
    
    If it is not possible to correctly adjust headlight aim, check bulb, headlight unit and headlight unit reflector installation.
    
    Confirm the direction of rotation of the aiming screw by observing it while it is being adjusted. Due to the position of the screwdriver, the direction of rotation of the adjusting screw can be different than the direction of rotation of the screwdriver being used to adjust it.
2. Adjust the high beam:
  1. Text in Illustration
    
    *1 Aiming Screw A
    
    Adjust the aim vertically:
    
    Adjust the aim of each headlight to the specified range by turning each aiming screw A with a screwdriver.
    
    Note
    
    The final turn of the aiming screw should be made in the clockwise direction. If the screw is tightened excessively, loosen it and then retighten it, so that the final turn of the screw is in the clockwise direction.
    Tech Tips
    
    Since the low beam light and the high beam light on each side have separate reflectors, it is necessary to check and adjust the aim separately for both.
    
    When adjusting the horizontal axis of the headlight, the vertical axis will also change. It is necessary to adjust the horizontal position first, and then correct the vertical position.
    
    If it is not possible to correctly adjust headlight aim, check bulb, headlight unit and headlight unit reflector installation.
    
    The headlight aim moves up when turning the aiming screw clockwise, and moves down when turning the aiming screw counterclockwise.
    
    Confirm the direction of rotation of the aiming screw by observing it while it is being adjusted. Due to the position of the screwdriver, the direction of rotation of the adjusting screw can be different than the direction of rotation of the screwdriver being used to adjust it.
  2. Text in Illustration
    
    *1 Aiming Screw B
    
    Adjust the aim horizontally:
    
    Adjust the aim of each headlight to the specified range by turning each aiming screw B with a screwdriver.
    
    Note
    
    The final turn of the aiming screw should be made in the clockwise direction. If the screw is tightened excessively, loosen it and then retighten it, so that the final turn of the screw is in the clockwise direction.
    Tech Tips
    
    Since the low beam light and the high beam light on each side have separate reflectors, it is necessary to check and adjust the aim separately for both.
    
    If it is not possible to correctly adjust headlight aim, check bulb, headlight unit and headlight unit reflector installation.
    
    Confirm the direction of rotation of the aiming screw by observing it while it is being adjusted. Due to the position of the screwdriver, the direction of rotation of the adjusting screw can be different than the direction of rotation of the screwdriver being used to adjust it.