NHTSA ID Number: 10177781
Manufacturer Communication Number: T-SB-0063-20
TSB/Document Date: 2020-08-03
Summary
TSB: SUPERSESSION NOTICE The information contained in this bulletin supersedes Service Bulletin Nos. ST005-01, SU001-08, and T-SB-0391-08. The aforementioned bulletins are obsolete, and any printed versions should be discarded. Be sure to review the entire content of this service bulletin before proceeding. This Service Bulletin provides best practice procedures for vehicle pulling complaint, diagnosis, and repair for 2002 ? 2021 model year Toyota
vehicles. This information supplements Repair Manual procedures when the symptoms are: ?Vehicle Pulling: The vehicle moves to the right or left when the driver holds the steering wheel while driving straight ahead without exerting steering effort. ?Steering Wheel Off Center: The vehicle travels straight, but the steering wheel is not pointed straight ahead. The vehicle is not pulling. Before repairing a vehicle pulling to one side, it is necessary to clearly identify the cause of the pulling condition. Frequently, pulling to one side is diagnosed as a wheel alignment concern. However, the actual cause may be related to the lateral force generated by the tires, vehicle damage, road crown or worn components. Performing a wheel alignment when tire force is the cause could result in the wheel alignment being set at a value outside of specifications. This could then cause other problems such as uneven tire wear, etc. A customer may notice a pull to the left when in the left lanes of travel and notice a pull to the right or no pull when traveling in the right lanes of travel on the very same section of roadway. This road crown effect is environmental and cannot be corrected with suspension adjustments or any other wheel or tire modification discussed in this bulletin.
ADJUSTING BOLT
1 DOT
ADJUSTING VALUE
1
15’
X
30’
X
45’
X
1◦00’
2
1
2 DOTS
2
1
3 DOTS
2
1
2
X
X
X
X
1◦15’
X
X
1◦30’
X
X
X
10. Follow steps 1 – 8 again. Between steps 2 and 3, exchange one or two selected bolts.
HINT
When exchanging the two bolts, exchange one bolt at a time.
11. Road test the vehicle to ensure the vehicle pull has been eliminated.
12. Has the vehicle pull been eliminated?
YES — The repair is now complete.
NO — Repeat the steps in the Vehicle Pulling Caused by Wheel Alignment subsection.
© 2020 Toyota Motor Sales, USA
T-SB-0063-20
June 23, 2020
Page 18 of 23
Vehicle Pull, Steering Wheel Off Center, and Alignment Best Practices
Repair Procedure (continued)
Steering Wheel Off Center Adjustment
This section shows the procedure to correct steering wheel off center for rack and pinion type
steering systems. An alignment rack is not needed.
1. Inspect steering wheel off center.
Figure 15.
A. Apply masking tape to the top center of
the steering wheel and steering column
upper cover.
1
2
3
z
z
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1
2
3
Steering Column Upper Cover
© 2020 Toyota Motor Sales, USA
T-SB-0063-20
June 23, 2020
Page 19 of 23
Vehicle Pull, Steering Wheel Off Center, and Alignment Best Practices
Repair Procedure (continued)
Steering Wheel Off Center Adjustment (continued)
B. Drive the vehicle in a straight line for
330 feet (100 m), at a constant speed of
35 mph (56 km/h) and hold the steering
wheel to maintain the course.
Figure 16.
1
2
C. Draw a line on the masking tape as
shown in Figure 16.
3
z
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1
Steering Column Upper Cover
2
Marked Line
3
4
© 2020 Toyota Motor Sales, USA
4
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T-SB-0063-20
June 23, 2020
Page 20 of 23
Vehicle Pull, Steering Wheel Off Center, and Alignment Best Practices
Repair Procedure (continued)
Steering Wheel Off Center Adjustment (continued)
D. Turn the steering wheel to its
straight position.
Figure 17.
1
HINT
Use the upper surface of the steering
wheel, steering spoke and SRS airbag line
(when present) as a reference.
2
3
z
z
z
E. Draw a new line on the masking tape of
the steering wheel as shown in Figure 17.
F. Measure the distance (in millimeters)
between the two lines drawn on the
steering wheel.
HINT
Make a note of this measurement.
1
Steering Column Upper Cover
2
3
New Marked Line
© 2020 Toyota Motor Sales, USA
T-SB-0063-20
June 23, 2020
Page 21 of 23
Vehicle Pull, Steering Wheel Off Center, and Alignment Best Practices
Repair Procedure (continued)
Steering Wheel Off Center Adjustment (continued)
2. Determine the amount and direction of tie rod adjustment.
A. Use the measurement made in step 1F to determine the amount of adjustment necessary
to the tie rod ends.
Table 3.
AMOUNT OF ROTATION
OF EACH TIE ROD END
(ROTATE EACH ROD
END SAME AMOUNT
BUT IN DIFFERENT
DIRECTIONS)
DISTANCE MEASURED
BETWEEN TWO LINES
DRAWN ON STEERING
WHEEL
APPROXIMATE ANGLE
STEERING WHEEL IS
OFF CENTER (BASED ON
MEASURED VALUE)
MEASUREMENT (mm)
APPROXIMATE ANGLE
(deg)
STARTING
POSITION
ENDING
POSITION
VERIFICATION
MEASUREMENT (mm)
1.0
1.0
0
1/2
0.125
2.0
2.0
0
1
0.2
3.0
3.0
0
1–1/2
0.375
4.0
4.0
0
2
0.5
5.0
5.0
0
2–1/2
0.625
© 2020 Toyota Motor Sales, USA
CHANGE IN LENGTH OF
TIE ROD END (ONE GETS
LONGER, THE OTHER
GETS SHORTER)
T-SB-0063-20
June 23, 2020
Page 22 of 23
Vehicle Pull, Steering Wheel Off Center, and Alignment Best Practices
Repair Procedure (continued)
Steering Wheel Off Center Adjustment (continued)
B. See the figure below for the direction of adjustment.
Figure 18.
1
2
z
2
Steering Wheel
Position When
Vehicle is
Traveling Straight
1
z
1
z
NOTE
These are the adjustment directions for the tie rod ends when the
rack is located behind the axle centerline.
If your vehicle has the steering rack forward of the axle centerline,
turn the tie rod ends the opposite direction.
Turn Inward
2
© 2020 Toyota Motor Sales, USA
Turn Outward
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T-SB-0063-20
June 23, 2020
Page 23 of 23
Vehicle Pull, Steering Wheel Off Center, and Alignment Best Practices
Repair Procedure (continued)
Steering Wheel Off Center Adjustment (continued)
3. Adjust the steering angle.
A. Lift the vehicle.
B. Draw a line on the right and left-hand tie
rods and rack ends where it can be
easily seen.
C. Measure the distance from the right and
left-hand tie rod ends to the rack
end screws.
NOTE
Measure the right and left-hand sides.
Make a note of the measured values.
D. Remove the right and left-hand boot clips
from the rack boots.
E. Loosen the right and left-hand lock nuts.
Figure 19.
F. Turn the right and left-hand rack ends by
the same amount (but in different
directions) according to the
steering angle.
z
2
1
G. Tighten the right and left-hand lock nuts
to the specified torque.
NOTE
Make sure that the difference in length of
the threaded portion of the right- and lefthand tie rod ends and rack ends are within
1.5 mm (0.059 in.).
1
Rack Boot
2
Boot Clip
3
Lock Nut
4
Rack End
H. Install the right- and left-hand boot clips.
I. Is the steering wheel centered
when driving?
YES — The repair is complete.
NO — Repeat the steps in the
Steering Wheel Off Center
Adjustment subsection.
© 2020 Toyota Motor Sales, USA
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3
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TSB/Document ID: T-SB-0063-20
Replacement Service Bulletin Number:
MFR Communication Date: 2020-06-23
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: WHEELS
MFR Component System:
MFR Component Subsystem:
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