2000 INFINITI Q45

2000 INFINITI Q45

Overview

The 2000 Infiniti Q45, a luxury sedan from the turn of the millennium, offered a potent V8 engine and a comfortable ride. While generally well-regarded for its performance and premium features, like any vehicle of this age, it has specific areas where owners have reported issues. This analysis focuses on common mechanical and electrical problems, excluding routine maintenance. Understanding these potential pitfalls can help current and prospective owners manage expectations and budget for necessary repairs, ensuring the continued enjoyment of this sophisticated vehicle.

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Engine

4.1L V8 (VH41DE)

Timing Chain Tensioner Failure

• Symptoms: Rattling noise from the front of the engine, especially on startup; potential for severe engine damage if ignored.
• Solution: Replacement of timing chain tensioners, guides, and potentially the chain itself.
• Cost: $1500 - $2500

Oil Leaks (Valve Covers/Gaskets)

• Symptoms: Visible oil on the engine block, burning oil smell, low oil level.
• Solution: Replacement of valve cover gaskets and potentially other seals.
• Cost: $300 - $600

Transmission

4-Speed Automatic (RE4R01A)

Harsh Shifting / Slipping

• Symptoms: Jerky gear changes, delayed engagement, or feeling of the transmission slipping out of gear.
• Solution: Transmission fluid and filter change, solenoid replacement, or full transmission rebuild.
• Cost: $500 - $3000+

Suspension

Independent Multi-Link

Worn Bushings and Ball Joints

• Symptoms: Clunking noises over bumps, vague steering feel, uneven tire wear.
• Solution: Replacement of worn bushings and ball joints.
• Cost: $400 - $900

Electrical

General Electrical System

Instrument Cluster Failures

• Symptoms: Non-functional gauges (speedometer, tachometer), dim or dead displays.
• Solution: Repair or replacement of the instrument cluster.
• Cost: $500 - $1200

Window Regulator Malfunctions

• Symptoms: Power windows failing to operate, slow movement, or getting stuck.
• Solution: Replacement of window regulators and motors.
• Cost: $200 - $400

Exterior

Body and Trim

Clear Coat Peeling

• Symptoms: The clear coat on the paint begins to flake or peel, especially on horizontal surfaces.
• Solution: Repainting affected areas or the entire vehicle.
• Cost: $500 - $3000+

Interior

Cabin Components

HVAC Blower Motor Failure

• Symptoms: No air coming from vents, or air only coming from certain vents regardless of setting.
• Solution: Replacement of the blower motor and resistor.
• Cost: $200 - $500

Leather Seat Wear

• Symptoms: Cracking, tearing, or excessive wear on leather surfaces.
• Solution: Repair or reupholstering of leather seats.
• Cost: $300 - $1000+

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Summary Verdict

The 2000 Infiniti Q45, while a capable luxury vehicle, exhibits some common issues typical of its age and luxury segment. The V8 engine can be prone to timing chain tensioner problems and oil leaks, requiring attention. The automatic transmission may develop shifting issues. Suspension components like bushings and ball joints are also wear items. Electrically, instrument clusters and power window regulators are known failure points. Exterior paint can suffer from clear coat degradation, and interior leather may show wear. Despite these potential issues, many Q45s remain on the road with proper maintenance and timely repairs, offering a blend of performance and comfort.