Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Precaution

PRECAUTION

HANDLING PRECAUTIONS FOR STEERING SYSTEM

(a) Care must be taken when replacing parts. Incorrect replacement may affect the performance of the steering system and result in a driving hazard.

HANDLING PRECAUTIONS FOR SRS AIRBAG SYSTEM

(a) This vehicle is equipped with a Supplemental Restraint System (SRS). Failure to carry out service operations in the correct sequence could cause the SRS to unexpectedly deploy during servicing. This may cause a serious accident. Before servicing (including inspection, replacement, removal, and installation of parts), be sure to read the precautionary notices for Supplemental Restraint System.

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HANDLING PRECAUTIONS FOR STEERING COLUMN

(a) When handling the steering column assembly:

(1) Do not subject the steering column assembly (especially the motor and torque sensor) to any impact. Replace the steering column assembly with a new one if subjected to a strong impact.

(2) Do not pull the wire harness when moving the steering column assembly.

(3) When the electric power steering column sub-assembly has been replaced, perform torque sensor zero point calibration.

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(b) When disconnecting or reconnecting the connectors:

(1) Before disconnecting connectors related to the power steering system, turn the engine switch on (IG), center the steering wheel, turn the engine switch off, and then disconnect the connectors.

(2) Before reconnecting connectors related to the power steering system, ensure that the engine switch is off. Then center the steering wheel and turn the engine switch on (IG).

NOTICE:

Do not turn the engine switch on (IG) when the steering wheel is not centered.

(3) If the above operations are not carried out properly, the steering center point (zero point) will deviate, which may lead to a difference in steering effort between turning right and left.

If there is a difference in steering effort between turning right and left, perform torque sensor zero point calibration.

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HANDLING PRECAUTION FOR SPIRAL CABLE

(a) Do not replace the spiral cable with sensor sub-assembly with the battery connected and the engine switch on (IG).

(b) Do not rotate the spiral cable with sensor sub-assembly without the steering wheel assembly installed, with the battery connected and the engine switch on (IG).

(c) Ensure that the steering wheel assembly is installed and aligned straight when inspecting the steering sensor.

(d) Be sure that the spiral cable is in the center position during installation and when removing and installing the steering wheel.

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CAUTION:

If the steering wheel is turned without the spiral cable installed in the center position, the cable may break.