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1997 Lexus LS 400 Luxury Sedan Base 4dr Sedan

1997 Lexus LS 400 Luxury Sedan
Trim Info:
Rear Wheel Drive, 4 Door Sedan, Mid-Size
19 mpg city / 25 mpg hwy
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April 25, 2012, 8:04 am

David A
 

Question: Steering wheel motor

How do I replace the motor that moves the steering column. Thanks


May 5, 2012, 2:17 am

Tyler O
Expert Mechanic

You need to remove the complete steering column

Are you sure it's the motor? It's usually one of the sensors that goes bad.

You can try applying power directly to the motor to double check this.

Removal and Installation



CAUTION: Work must be started after 90 seconds from the time the ignition switch is turned to the "LOCK" position and the negative ( - ) terminal cable is disconnected from the battery with the telescopic steering pulled out.

Remove steering wheel pad.

NOTICE:

If the airbag connector is disconnected with the ignition switch at ON or ACC, DTCs will be recorded.
Never use airbag parts from another vehicle. When replacing parts, replace with new parts.

Place the front wheels facing straight ahead.
Remove the steering wheel lower No. 2 and No. 3 covers.
Using a torx socket wrench, loosen the 2 torx screws.

HINT: Loosen the 2 screws until the groove along the screw circumference catches on the screw case.




Pull out the wheel pad from the steering wheel and disconnect the airbag connector.

CAUTION:

When storing the wheel pad, keep the upper surface of the pad facing upward.
Never disassemble the wheel pad.

NOTICE: When removing the wheel pad, take care not to pull the airbag wire harness.




Remove steering wheel.

Disconnect the connector.
Remove the steering wheel set nut.
Place matchmarks on the steering wheel and main shaft.
Using SST 09950 - 50010 (09951 - 05010, 09952 - 05010, 09953-05020, 09954-05020), or equivalent, remove the wheel.

Remove No. 1 under cover.

Disconnect the 2 connectors and DLC 2.
Remove the 2 screws and disconnect the DLC 3.
Remove the 2 cover set screws.

Remove end pad and finish plate.
Remove No. 1 safety pad.

Remove the 2 screws and disconnect the engine hood release lever from the pad.
Remove the 4 pad set bolts.

Remove No. 2 heater to register duct.
Remove upper and lower column covers. Remove the 3 screws.
Remove combination switch with spiral cable.

Disconnect the 2 connectors.
Disconnect the airbag connector.
Remove the 3 screws.

Remove spiral cable.

NOTICE: Do not disassemble the cable or apply oil to it.




Disconnect sliding yoke.

Place matchmarks on the sliding yoke and control valve shaft.
Loosen bolt A and remove bolt B.

Remove sliding yoke. Remove the bolt A.
Remove steering column assembly.

Disconnect the 3 connectors.
Remove the return spring.
Remove the 4 column assembly set nuts.

INSTALLATION

Install steering column assembly.

Torque the 4 column assembly set nuts. Torque: 25 Nm (19 ft. lbs.)
Install the return spring.
Connect the 3 connectors.




Install sliding yoke. Temporarily tighten the bolt A.
Connect sliding yoke.

Align the matchmarks on the sliding yoke and control valve shaft.
Torque the bolt B. Torque: 35 Nm (26 ft. lbs.)
Torque the bolt A. Torque: 35 Nm (26 ft. lbs.)

Install spiral cable.
Install combination switch with spiral cable.

Tighten the 3 screws.
Connect the airbag connector.
Connect the 2 connectors.

Install upper and lower column covers. Tighten the 3 screws.
Install No. 2 heater to register duct.
Install No. 1 safety pad.

Tighten the 4 panel set bolts.
Connect the engine hood release lever and tighten the 2 screws to the pad.

Install end pad and finish plate.
Install No. 1 under cover.

Tighten the 2 cover set screws.
Connect the DLC 3 with 2 screws.
Connect the 2 connectors and DLC 2.

Center spiral cable.

Check that the front wheels are facing straight ahead.
Turn the cable counterclockwise by hand until it becomes harder to turn the cable.




Then rotate the cable clockwise about 3 turns to align the green mark.

HINT: The cable will rotate about 3 turns to either left or right of the center.

Install steering wheel.

Align the matchmarks on the wheel and main shaft.
Torque the wheel set nut to 35 Nm (26 ft. lbs.)
Connect the connector.

Install steering wheel pad.

NOTICE: Make sure the wheel pad is installed to the specified torque. If the wheel pad has been dropped, or there are cracks, dents or other defects in the case or connector, replace the wheel pad with a new one. When installing the wheel pad, take care that the wirings do not interfere with other parts and are not pinched between other parts.

Connect the airbag connector.




Install the wheel pad after confirming that the circumference groove of the torx screws is caught on the screw case.
Using a torx socket wrench, torque the screws to 8.8 Nm (78 inch lbs.)
Install the steering wheel lower No. 2 and No. 3 covers.

Check steering wheel center point.


Disassembly and Reassembly


DISASSEMBLY

NOTICE: When using a vise, do not overtighten it.

Remove ignition key cylinder illumination with transponder key coil.

Disconnect the connector.
Remove the screw.




Remove No. 2 intermediate shaft assembly.

Place matchmarks on the main shaft and No. 2 intermediate shaft.
Remove the bolt.

Remove telescopic sensor plate. Remove the bolt.
Remove telescopic position sensor.

Disconnect the connector.
Remove the 2 screws.

Remove tilt position sensor.

Remove the wiring harness clamp.
Remove the screw.

Remove turn signal bracket. Remove the 3 bolts.
Remove protector and No. 2 protector. Remove the 3 bolts and screw.
Remove connector bracket. Remove the 2 bolts.
Remove column upper bracket.

Using a centering punch, mark the center of the 2 tapered head bolts.
Using a 4 - 5 mm (0.16 - 0.20 inch) drill, drill into the 2 bolts.




Using a screw extractor, remove the 2 bolts.




Remove tilt steering gear assembly with motor.

Remove the 2 adjusting nuts, springs and plate washer.
Remove the bond cable with screw.
Set SST 09213 - 54015 (09214 - 00030), 09910-00015 (09911 -00011, 09912-00010), or equivalents, and 2 plate washers (18 and 36 mm outer diameter), as shown. And then remove the 2 No. 2 tilt steering shafts. Reference: Plate washer A: 90562 - 04012

Plate washer B: 90201 - 10201

Remove the 2 bushings from the tilt steering gear assembly with motor.
Remove the 2 support stopper bolts with set bolts.




Remove column upper tube with main shaft and No. 1 main shaft.

Set SST 09213 - 54015 (09214 - 00030), 09910 - 00015 (09911 - 00011, 09912 - 00010), or equivalents, and 2 plate washers (18 and 36 mm outer diameter), as shown. And then remove the 2 tilt steering shafts. Reference: Plate washer (A): 90562 - 04012

Plate washer (B): 90201 - 10201

Using a snap ring expander, remove the snap ring from the No. 1 main shaft.
Remove the upper tube with main shaft and No. 1 main shaft.
Remove the No. 1 main shaft.
Using a snap ring expander, remove the snap fir from the No. 1 main shaft.




Remove main shaft.

Using SST 09950 - 40010 (09958 - 04010), compress the compression spring.

NOTICE: Do not bend the universal joint of the shaft more than 20° .

Using a snap ring expander, remove the snap ring.
Remove the main shaft from the upper tube.
Remove the compression spring, thrust collar and bearing.




Remove radial ball bearing.

Using snap ring pliers, remove the snap ring from the breakaway bracket with telescopic motor.
Using SST 09950 - 60010 (09951 - 00280), 09950-70010 (09951-07200), and hammer, drive out the ball bearing.

Remove tilt steering housing support. Remove the 4 bolts.
Remove column tube support.

Remove the bolt.
Remove the clip from the support.

Remove No. 1 lower tube bracket. Remove the bolt.




Remove 2 energy absorbing plates. Using a pin punch and hammer, tap out the energy absorbing pin. Remove the plate roller. plate and guide.

INSPECTION AND SERVICE

NOTICE: When using a vise, do not overtighten it.




Inspect steering lock operation. Check that the steering lock mechanism operates properly.




If necessary, replace key cylinder.

Place the ignition key at the ACC position.
Push down the stop pin with a screwdriver, and pull out the cylinder.
Install a new cylinder.

HINT: Make sure the ignition key is at the ACC position. Do not operate steering lock with the cylinder removed.

Inspect ignition switch.
If necessary, replace ignition switch.

Remove the 2 screws.
Install new switches with the 2 screws.

Inspect key unlock warning switch.
Inspect key interlock solenoid.
if necessary, replace key interlock solenoid with key unlock warning switch.

Remove the 4 screws.
Install a new solenoid and warning switch with the 4 screws.

Inspect transponder key coil.
If necessary, replace transponder key coil.

Remove the key coil from the ignition key cylinder illumination.
Install a new key coil to the ignition key cylinder illumination.




If necessary, replace transponder key amplifier.

Remove the 2 screw.
Install a new key amplifier with the 2 screws.

Inspect bearing. Check the bearing rotation condition and check for abnormal noise. If it is faulty, replace the column upper tube.
If necessary, adjust 2 telescopic adjusting screws.

Using SST 09922 - 1001 0, remove the lock nut.




NOTICE: Use SST 09922 - 10010 in the direction shown.




Using a 17 mm hexagon wrench, torque the adjusting screw to 7 Nm (62 inch lbs.) .




NOTICE:

If the adjusting screw is tightened higher than the specified torque, the telescopic mechanism may malfunction. Conversely, if the torque applied is ton low, rattling may develop in the column, so the specified torque should always be applied.
When the adjusting screw and conical springs have been removed. replace the conical springs facing in the direction shown in the illustration.




Using a 17 mm hexagon wrench to hold the adjusting screw and using SST 09922 - 100 1 0, torque the lock nut to 26 Nm (19 ft. lbs.)

NOTICE: Use SST 09922 - 10010 in the direction shown in the illustration.
HINT: Use a torque wrench with a fulcrum length of 345 mm (13.58 inch) .

ASSEMBLY

NOTICE: When using a vise, do not overtighten it.

Coat with molybdenum disulfide lithium base grease.
Install 2 energy absorbing plates. Install the energy absorbing roller, pin, guide and plate.
Install No. 1 lower tube bracket. Torque the bolt to 2.8 Nm (25 inch lbs.)
Install column tube support.

NOTICE: If the clip or support is deformed, replace it with a new one.




Install the clip to the support until its stopper contacts the support.
Install the support.

NOTICE: Make sure you install the support facing the correct direction.

Torque the bolt to 15 Nm (11 ft. lbs.)

NOTICE: Tighten the bolt while holding the support to prevent it turning too. Be sure to tighten the bolt to the specified torque.

Install tilt steering housing support. Torque the 4 bolts to 13 Nm (9 ft. lbs.)
Install radial ball bearing.

Coat a new ball bearing with molybdenum disulfide lithium base grease.




Using SST 09950 - 60010 (09951 - 00190, 09951 - 00340, 09952 - 06010), 09950 - 70010 (09951 - 07100), press in the ball bearing. Using snap ring pliers, install a new snap ring to the breakaway bracket with telescopic motor.

Install main shaft.

Coat a new bearing with molybdenum disulfide lithium base grease.
Install the bearing, thrust collar and compression spring to the main shaft.
Install the main shaft into the column upper tube.




Using SST 09950 - 40010 (09958 - 04010), compress the spring.

NOTICE: Do not bend the universal joint of the main shaft more than 20° .

Using a snap ring expander, install a new snap ring.




Install No. 1 main shaft.

Align the ditch of the No. 1 main shaft and projection of the main shaft, and install the No. 1 main shaft in the main shaft.
Using a snap ring expander, install a new snap ring to the No. 1 main shaft.

Install tilt steering gear assembly with motor.

Install the 2 bushing to the tilt steering gear assembly with motor.
Install the 2 support stopper bolts with 2 bolts and torque to 5 Nm (44 inch lbs.)




Using a vise, press in the 2 No. 2 tilt steering shaft.
Install a new plate washer, springs to each adjusting nuts.
Install the bond cable.
Torque new lock nuts and torque to 3 Nm (27 inch lbs.)
Tighten the bond cable set screw.

Install column upper tube with main shaft and No. 1 main shaft.

Install the column upper tube with main shaft and No. 1 main shaft.
Using a snap ring expander, install a new snap ring to the No.1 main shaft.




Using a vise, press in the 2 tilt steering shafts.

HINT: Make sure the upper tube turns smoothly.




Install column upper bracket. Tighten the 2 new tapered head bolts until the bolt heads break off.
Install connector bracket. Torque the 2 bolts to 2.8 Nm (25 inch lbs.) .
Install protector and No. 2 protector.

Torque the 3 bolts to 5 Nm (44 inch lbs.) .
Tighten the screw.

Install turn signal bracket and torque the 3 bolts to 5 Nm (44 inch lbs.) .
Install tilt position sensor.

Tighten the screw.
Install the wiring harness clamp.

Install telescopic position sensor.

Tighten the 2 screws.
Connect the connector.




Install telescopic sensor plate.

Install the sensor plate, as shown in the illustration.
Torque the bolt to 5 Nm (44 inch lbs.)

install ignition key cylinder illumination with transponder key coil.

Install the screw.
Connect the connector.

Install No. 2 intermediate shaft assembly.

Align the matchmarks on the main shaft and No. 2 intermediate shaft.
Torque the bolt to 35 Nm (26 ft. lbs.)


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