2001 Lexus LS 430FACTORY OEM SERVICE PROCEDURE

Problem Symptoms

WARNING: This page is about a different car, the 2002 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.

Use PROBLEM SYMPTOMSΒ  table to help you find the cause of the problem. The numbers indicate the priority of the likely cause of the problem. Check each part in the order shown. If necessary, repair or replace these parts.

Problem Symptoms

Symptom/Suspect Area Refer To
Hard Steering
Tires (Improperly Inflated) (1)
Power Steering Fluid Level (Low) INSPECTIONΒ 
Drive Belt (1)
Front Wheel Alignment (Incorrect) ALIGNMENT SPEICIFCATIONS & PROCEDURES
Steering System Joints (Worn) (2)
Suspension Arm Ball Joints (Worn) BALL JOINT ROTATION
Steering Column (Binding) (2)
Power Steering Gear POWER STEERING GEARΒ 
PPS System PPS SYSTEM
Poor Return
Tires (Improperly Inflated) (1)
Front Wheel Alignment (Incorrect) ALIGNMENT SPEICIFCATIONS & PROCEDURES
Steering Column (Binding) (2)
Power Steering Gear POWER STEERING GEARΒ 
Excessive Play
Steering System Joints (Worn) (2)
Suspension Arm Ball Joints (Worn) BALL JOINT ROTATION
Intermediate Shaft, Universal Joint, Sliding Yoke (Worn) (2)
Front Wheel Bearing (Worn) BEARING BACKLASH & AXLE HUB DEVIATION
Power Steering Gear POWER STEERING GEARΒ 
PPS System PPS SYSTEM
Abnormal Noise
Power Steering Fluid Level (Low) INSPECTIONΒ 
Steering Systems Joints (Worn) (2)
Power Steering Gear POWER STEERING GEARΒ 
(1) Inspect and adjust as necessary.
(2) Inspect and repair/replace as necessary.

Β 
NOTE: When the problem occurs on the power tilt and telescopic steering system, refer to POWER TILT AND TELESCOPIC STEERING SYSTEM .
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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