PROBLEM SYMPTOMS TABLE
HINT:
Symptom | Suspected Area | Link |
---|---|---|
Heavy steering | Front tires (improperly inflated, unevenly worn) | |
Front wheel alignment (incorrect) | | |
Front suspension (Lower ball joint) | | |
Steering gear assembly | | |
Battery and power source circuit | | |
Power source voltage of power steering ECU assembly | | |
Power steering ECU assembly | | |
Vehicle condition (Steering wheel is turned from left to right repeatedly with vehicle stopped or heavy load is continuously applied to vehicle) | | |
Steering effort differs between right and left or is uneven | Rotation angle sensor initialization and torque sensor zero point calibration incomplete | |
Front tires (improperly inflated, unevenly worn) | | |
Front wheel alignment (incorrect) | | |
Front suspension (Lower ball joint) | | |
Steering gear assembly | | |
Torque sensor (Electric power steering column sub-assembly) | | |
Electric power steering column sub-assembly | | |
Power steering ECU assembly | | |
While driving, steering effort does not change in accordance with vehicle speed, or steering wheel does not return to its centered position easily | Skid control ECU (brake actuator assembly) | |
Speed sensor | | |
Torque sensor (Electric power steering column sub-assembly) | | |
Power steering ECU assembly | | |
CAN communication system | | |
Friction sounds occur when turning steering wheel during low speed driving | Power steering motor (Power steering ECU assembly) | |
Electric power steering column sub-assembly | | |
Spiral with cable sensor sub-assembly | | |
Steering column cover contacting steering wheel assembly | | |
High-pitched sound (squeaking) occurs when turning steering wheel slowly with vehicle stopped | Power steering motor (Power steering ECU assembly) | |
Steering wheel installation (incorrect) | | |
Steering wheel vibrates and noise occurs when turning steering wheel from lock to lock | Power steering motor (Power steering ECU assembly) | |
Electric power steering column sub-assembly | | |
Steering wheel installation (incorrect) | | |
EPS warning light remains on | EPS warning light circuit | |
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Steering Gear: Reassembly
REASSEMBLY PROCEDURE 1. INSTALL NO. 2 STEERING RACK BOOT (a) Apply lithium soap base glycol grease to the inside of the small opening of a new No. 2 steering rack boot. Lithium Soap Base Glycol Grease (b) Install the No. 2 steering rack boot to the groove on the rack housing. NOTICE:
Be ...
Lexus RX (RX 350L, RX450h) 2016-2025 Owners Manual > Maintenance: Maintenance
requirements
To ensure safe and economical driving, day-to-day care and regular
maintenance
are essential. It is the owner's responsibility to perform regular checks.
Lexus recommends the following maintenance:
General maintenance
General maintenance should be performed on a daily basis. This can be done ...