2004 Lexus LS430

2004 Lexus LS430

Overview

The 2004 Lexus LS430 is renowned for its exceptional reliability and luxury, building upon Lexus’s strong reputation for building durable vehicles. This generation of the LS430, particularly with its robust V8 engine and refined engineering, generally experiences very few significant mechanical or electrical problems. Owners typically report a smooth ownership experience with minimal unscheduled repairs. While no car is entirely immune to issues, the LS430 stands out for its longevity and the quality of its construction, making it a solid choice for those seeking a dependable luxury sedan. Routine maintenance is key to preserving its excellent condition.

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Engine

4.3L V8 (3UZ-FE)

No widespread issues reported.

• Symptoms: No widespread issues reported.
• Solution: No widespread issues reported.
• Cost: N/A

Transmission

5-Speed Automatic (A760E)

No widespread issues reported.

• Symptoms: No widespread issues reported.
• Solution: No widespread issues reported.
• Cost: N/A

Suspension

Standard & Air Suspension

Air Suspension Leaks (Air Suspension models only)

• Symptoms: Vehicle may sag on one corner, especially after sitting for a period. Hissing sounds from suspension components.
• Solution: Replacement of leaking air springs, air compressor, or associated lines. Often requires specialized diagnostic equipment.
• Cost: $500 - $1500 per corner (air spring), $800 - $2000 (compressor)

Control Arm Bushings

• Symptoms: Clunking noises over bumps, vague steering feel, uneven tire wear.
• Solution: Replacement of worn control arm bushings. Can be done separately or with the control arm assembly.
• Cost: $300 - $700 per axle

Electrical

General Electrical System

Navigation System Glitches

• Symptoms: Screen freezing, unresponsiveness, incorrect map data.
• Solution: Software update or replacement of the navigation head unit.
• Cost: $500 - $2000 (depending on repair)

Power Window Motor Failure

• Symptoms: Window not operating, slow operation, clicking noises.
• Solution: Replacement of the power window motor and regulator assembly.
• Cost: $250 - $500 per window

Exterior

Body and Trim

Headlight Lens Hazing/Yellowing

• Symptoms: Reduced light output, unsightly appearance of headlights.
• Solution: Restoration kits or replacement of headlight assemblies.
• Cost: $50 - $200 (restoration), $400 - $800 (replacement per pair)

Interior

Cabin Components

Mark Levinson Audio System Speaker Degradation

• Symptoms: Distorted sound, rattling from speakers, loss of audio output from specific speakers.
• Solution: Replacement of the affected speaker(s).
• Cost: $150 - $400 per speaker

Climate Control Display Issues

• Symptoms: Dimming or failure of the climate control display pixels.
• Solution: Repair or replacement of the climate control module.
• Cost: $300 - $700

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Summary Verdict

The 2004 Lexus LS430 is a highly reliable luxury sedan. Its 4.3L V8 engine and 5-speed automatic transmission are exceptionally robust, with no widespread issues reported. While minor issues like headlight hazing and occasional climate control display problems can occur, they are generally not deal-breakers. The air suspension system on equipped models is the most notable area for potential costly repairs, with leaks being the primary concern. Overall, the LS430 offers a dependable and luxurious ownership experience, with most reported issues being minor and manageable. Regular maintenance is crucial for maximizing its already impressive longevity.