Lexus IS250 IS220d GSE20 ALE20 - LIGHTING

INSTALL REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY

REMOVE FRONT HEIGHT CONTROL SENSOR SUB-ASSEMBLY (for 4WD)

INSTALL FRONT HEIGHT CONTROL SENSOR SUB-ASSEMBLY (for 2WD)

VEHICLE PREPARATION FOR HEADLIGHT AIM ADJUSTMENT

PREPARATION FOR HEADLIGHT AIMING (Using a screen)

HEADLIGHT AIMING INSPECTION

HEADLIGHT AIMING ADJUSTMENT

HEIGHT CONTROL SENSOR - INSTALLATION

1. INSTALL REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY

When replacing the rear height control sensor sub-assembly:

Align the matchmarks and also the trace of the nut, and install the rear height control sensor sub-assembly and bracket.

When reusing the rear height control sensor sub-assembly:

Align the matchmarks on the rear height control sensor sub-assembly and bracket.

Install the rear height control sensor sub-assembly with the 2 bolts and nut.

Torque:
Bolt:
14 N*m{ 143 kgf*cm, 10 ft.*lbf}
Nut:
5.4 N*m{ 55 kgf*cm, 48 in.*lbf}

Install the clamp.

Connect the connector.

2. REMOVE FRONT HEIGHT CONTROL SENSOR SUB-ASSEMBLY (for 4WD)

Install the 2 bolts.

Torque:
14 N*m{ 143 kgf*cm, 10 ft.*lbf}

Install the front height control sensor sub-assembly with the bolt.

Torque:
5.4 N*m{ 55 kgf*cm, 48 in.*lbf}

Connect the connector.

3. INSTALL FRONT HEIGHT CONTROL SENSOR SUB-ASSEMBLY (for 2WD)

Install the 2 bolts.

Torque:
14 N*m{ 143 kgf*cm, 10 ft.*lbf}

Install the front height control sensor sub-assembly with the nut.

Torque:
5.4 N*m{ 55 kgf*cm, 48 in.*lbf}

Connect the connector.

4. VEHICLE PREPARATION FOR HEADLIGHT AIM ADJUSTMENT

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.

Place the spare tire, tools, and jack in their original positions.

Unload the trunk.

Sit a person of average weight (75 kg, 165 lb) in the driver's seat.

5. PREPARATION FOR HEADLIGHT AIMING (Using a screen)

Prepare the vehicle according to the following conditions:

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.

Place the vehicle on a level surface.

Bounce the vehicle up and down to settle the suspension.

NOTICE:

A distance of 25 m (82 ft) between the vehicle (headlight bulb center) and the wall is necessary for proper aim adjustment. If unavailable, secure a distance of exactly 3 m (9.84 ft) for check and adjustment. (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 (6.6 ft) (height) x 4 m (13.1 ft) (width)) to use as a screen.

Draw a vertical line down the center of screen (V line).

Set the screen as shown in the illustration.

Height Control Sensor - Installation. LIGHTING. Lexus IS250 IS220d GSE20 ALE20

HINT:

Stand the screen perpendicular to the ground.

Align the V line on the screen with the center of the vehicle.

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

HINT:

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 or the manufacturer's name marked on the headlight as the center mark.

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).

6. HEADLIGHT AIMING INSPECTION

Cover the headlight 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.

NOTICE:

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.

HINT:

When checking the aim of the high-beam, cover the low-beam or disconnect the connector.

Start the engine.

Turn on the headlight and make sure that the cutoff line falls within the specified area, as shown in the illustration.

Height Control Sensor - Installation. LIGHTING. Lexus IS250 IS220d GSE20 ALE20

HINT:

Alignment distance is 25 m (82 ft):
The cutoff line is 48 mm (1.88 in.) to 698 mm (27.48 in.) below the H line with low-beam (ECE Reg.48).

Alignment distance is 3 m (9.84 ft):
The cutoff line is 6 mm (0.23 in.) to 84 mm (3.3 in.) below the H line with low-beam (ECE Reg.48).

Alignment distance is 25 m (82 ft):
The cutoff line is 249 mm (9.8 in.) below the H line with low-beam.

Alignment distance is 3 m (9.84 ft):
The cutoff line is 30 mm (1.18 in.) below the H line with low-beam.

Since the low-beam light and the high-beam light are a unit, if the aim on one is correct, the other should also be correct. However, check both beams just to make sure.

7. HEADLIGHT AIMING ADJUSTMENT

Adjust the aim vertically:

Adjust the headlight aim into the specified range by turning aiming screw A with a screwdriver.

NOTICE:

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.

HINT:

Perform low-beam aim adjustment.

The headlight aim moves up when turning the aiming screw clockwise, and moves down when turning the aiming screw counterclockwise.

Adjust the aim horizontally:

Adjust the headlight aim into the specified range by turning aiming screw B with a screwdriver.

NOTICE:

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.

HINT:

Perform low-beam aim adjustment.