Lexus SC300 / Lexus SC400. Service manual - part 758

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STEERING

STEERING COLUMN

SR–9

MAIN POINTS OF REMOVAL AND
INSTALLATION

NOTICE:

•

If the SRS (Supplemental Restraint System) connector is

disconnected with the ignition switch at ON or ACC,

diagnostic trouble codes will be recorded.

•

Never use SRS parts from another vehicle. When

replacing parts, replace with new parts.

1. 

DISCONNECT NEGATIVE (–) TERMINAL CABLE FROM
BATTERY

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.

(See RS section)

2. 

REMOVE STEERING WHEEL PAD

(a)  Place the front wheels facing straight ahead.
(b)  Remove the No.2 and No.3 covers.
(c)  Using a torx wrench, loosen the 4 torx screws.

Torx wrench: T30 (Part No. 09042–00010 or locally manufac-
tured tool)
HINT: Loosen the 4 screws until the groove along the screw
circumference catches on the screw case.

(d) Pull 

the 

wheel pad  out from the steering  wheel and

disconnect the Airbag connector.

NOTICE: When removing the wheel pad, take care not to pull

the Airbag wire harness.

CAUTION:

•

When storing the wheel pad, keep the upper surface of

the pad facing upward.

•

Never disassemble the wheel pad.

3. 

REMOVE STEERING WHEEL

(a)  Disconnect the connector.
(b)  Remove the steering wheel set nut.
(c)  Place matchmarks on the steering wheel and main shaft.
(d)  Using SST, remove the wheel.

SC400:
SST 09213–31021
SC300:
SST 09609–20011

SR–10

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STEERING

STEERING COLUMN

4. 

CENTER SPIRAL CABLE

(a)  Check that the front wheels are facing straight ahead.
(b)  Turn the spiral cable counterclockwise by hand until it

becomes harder to turn the cable.

(c)  Then rotate the spiral cable clockwise about 3 turns to align

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

5. 

INSTALL STEERING WHEEL

(a)  Align matchmarks on the steering wheel and main shaft, and

install the wheel to the shaft.

(b)  Tighten the wheel set nut.

Torque: 35 N

⋅

m (360 kgf

⋅

cm, 26 ft

⋅

lbf)

(c)  Connect the connector.

6. 

INSTALL STEERING WHEEL PAD

(a)  Connect the Airbag connector.
(b) Install 

the pad after confirming that the circumference groove

of the torx screws is caught on the screw case.

(c)  Using a torx wrench, tighten the 4 torx screws.

Torque: 7.4 N

⋅

m (75 kgf

⋅

cm, 65 in.

⋅

lbf)

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 wiring

does not interfere with other parts and is not pinched

between other parts.

7. 

CHECK STEERING WHEEL CENTER POINT

8.  CONNECT NEGATIVE (–) TERMINAL CABLE TO

BATTERY

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STEERING

STEERING COLUMN

SR–11

MANUAL TILT AND MANUAL
TELESCOPIC STEERING COLUMN

SR0EP–07

(SC300)
COMPONENTS

SR–12

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STEERING

STEERING COLUMN