Lexus IS250 IS220d GSE20 ALE20 - SUSPENSION

REAR UPPER NO. 1 CONTROL ARM - INSTALLATION

1. TEMPORARILY TIGHTEN REAR UPPER NO. 1 CONTROL ARM
Rear Upper No. 1 Control Arm - Installation. SUSPENSION. Lexus IS250 IS220d GSE20 ALE20

Temporarily install the rear upper No. 1 control arm with the bolt, nut, and washer.

Rear Upper No. 1 Control Arm - Installation. SUSPENSION. Lexus IS250 IS220d GSE20 ALE20

Temporarily install the rear upper No. 1 control arm with the bolt, nut, and washer.

  • NOTICE:
  • Push the axle carrier downward.
2. TEMPORARILY TIGHTEN REAR SHOCK ABSORBER WITH COIL SPRING
Rear Upper No. 1 Control Arm - Installation. SUSPENSION. Lexus IS250 IS220d GSE20 ALE20

Temporarily install the rear shock absorber with coil spring with the bolt and nut.

3. TEMPORARILY TIGHTEN REAR STABILIZER LINK ASSEMBLY

Temporarily install the rear stabilizer link assembly and the height control sensor link bracket to the rear No. 2 suspension arm assembly with the bolt and nut.

4. STABILIZE SUSPENSION
Rear Upper No. 1 Control Arm - Installation. SUSPENSION. Lexus IS250 IS220d GSE20 ALE20

Jack up the axle carrier, with a wooden block placed between the jack and axle carrier, to apply a load to the suspension so that the rear drive shaft assembly becomes level.

5. FULLY TIGHTEN REAR UPPER NO. 1 CONTROL ARM
Rear Upper No. 1 Control Arm - Installation. SUSPENSION. Lexus IS250 IS220d GSE20 ALE20

Fully tighten the nut on the rear upper No. 1 control arm assembly.

  • Torque:
  • 161 N*m{ 1,640 kgf*cm, 119 ft.*lbf}
Rear Upper No. 1 Control Arm - Installation. SUSPENSION. Lexus IS250 IS220d GSE20 ALE20

Using a ball joint lock nut wrench (19 mm), fully tighten the nut on the rear upper No. 1 control arm assembly.

  • Torque:
  • :
  • 161 N*m{ 1,640 kgf*cm, 119 ft.*lbf}
  • When using a ball joint lock nut wrench:
  • 117 N*m{ 1,192 kgf*cm, 86 ft.*lbf}
6. FULLY TIGHTEN REAR SHOCK ABSORBER WITH COIL SPRING
Rear Upper No. 1 Control Arm - Installation. SUSPENSION. Lexus IS250 IS220d GSE20 ALE20

Fully tighten the bolt (A) holding the rear shock absorber with coil spring.

  • Torque:
  • 110 N*m{ 1,120 kgf*cm, 81 ft.*lbf}
  • NOTICE:
  • Turn the bolt while holding the nut.
7. FULLY TIGHTEN REAR STABILIZER LINK ASSEMBLY

Full tighten the nut (B) holding the rear stabilizer link assembly.

  • Torque:
  • 27 N*m{ 275 kgf*cm, 20 ft.*lbf}
8. INSTALL NO. 2 DIFFERENTIAL SUPPORT PROTECTOR
Rear Upper No. 1 Control Arm - Installation. SUSPENSION. Lexus IS250 IS220d GSE20 ALE20

Install the No. 2 differential support protector with the 2 nuts.

9. INSTALL REAR WHEEL
  • Torque:
  • 103 N*m{ 1,050 kgf*cm, 76 ft.*lbf}
10. INSPECT AND ADJUST REAR WHEEL ALIGNMENT

11. 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.
12. PREPARATION FOR HEADLIGHT AIMING
Rear Upper No. 1 Control Arm - Installation. SUSPENSION. Lexus IS250 IS220d GSE20 ALE20

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.

Rear Upper No. 1 Control Arm - Installation. SUSPENSION. 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.
Rear Upper No. 1 Control Arm - Installation. SUSPENSION. Lexus IS250 IS220d GSE20 ALE20

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).

13. 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.

Rear Upper No. 1 Control Arm - Installation. SUSPENSION. 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.
14. HEADLIGHT AIMING ADJUSTMENT
Rear Upper No. 1 Control Arm - Installation. SUSPENSION. Lexus IS250 IS220d GSE20 ALE20

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.
Rear Upper No. 1 Control Arm - Installation. SUSPENSION. Lexus IS250 IS220d GSE20 ALE20

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.
LEXUS IS250, IS220d / GSE20 ALE20
SUSPENSION
Lexus IS250 IS220d GSE20 ALE20
REAR UPPER NO. 1 CONTROL ARM