2004 INFINITI FX35

2004 INFINITI FX35

Overview

The 2004 INFINITI FX35, a luxury crossover SUV, offered a blend of performance and utility. Powered by a robust V6 engine, it aimed to provide an engaging driving experience. While generally considered a reliable vehicle for its era, like any automotive product, it has certain areas where owners have reported issues. This analysis focuses on common technical problems beyond routine maintenance, providing insights into potential repair needs for prospective or current owners. Understanding these specific areas can help in preemptive checks and budgeting for potential repairs.

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Engine

3.5L VQ35DE V6

Oil Leaks (Valve Covers/Gaskets)

• Symptoms: Visible oil residue around the engine, burning oil smell, low oil level.
• Solution: Replacement of valve cover gaskets or other related seals.
• Cost: $300 - $600

Timing Chain Tensioner Wear

• Symptoms: Rattling noise from the front of the engine, especially on startup or at idle.
• Solution: Replacement of timing chain tensioners and potentially the timing chain itself.
• Cost: $800 - $1500

Transmission

5-Speed Automatic (RE5R05A)

Harsh Shifting / Delayed Engagement

• Symptoms: Jerky gear changes, difficulty engaging drive or reverse, transmission warning light.
• Solution: Transmission fluid and filter change, solenoid replacement, or full transmission rebuild.
• Cost: $400 - $2500+

Suspension

Standard Chassis

Worn Control Arm Bushings

• Symptoms: Clunking noises over bumps, vague steering feel, uneven tire wear.
• Solution: Replacement of front or rear control arm bushings.
• Cost: $300 - $700

Electrical

Body Control Module (BCM)

Intermittent Electrical Gremlins

• Symptoms: Malfunctioning power windows, door locks, interior lights, or dashboard warning lights.
• Solution: Diagnosis and potential reprogramming or replacement of the BCM.
• Cost: $500 - $1000

Alternator

Premature Failure

• Symptoms: Dimming headlights, battery warning light, difficulty starting, dead battery.
• Solution: Replacement of the alternator.
• Cost: $400 - $700

Exterior

Body Panels & Trim

Clear Coat Peeling

• Symptoms: Fading paint, peeling clear coat, especially on the roof and hood.
• Solution: Repainting affected areas.
• Cost: $500 - $2000+

Interior

HVAC System

Blend Door Actuator Failure

• Symptoms: Inability to control temperature (stuck on hot or cold), air only coming from certain vents.
• Solution: Replacement of the blend door actuator(s).
• Cost: $200 - $500

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Summary Verdict

The 2004 INFINITI FX35 is a capable luxury SUV with a generally good reliability record for its age. The most commonly reported issues tend to be related to the engine’s oil seals and timing chain tensioners, as well as potential transmission problems like harsh shifting. Electrical components, particularly the alternator and BCM, can also be a source of concern. Suspension wear, especially control arm bushings, is typical for a vehicle of this mileage. Exterior paint issues like clear coat peeling and interior HVAC blend door actuator failures are also noted. While not overwhelmingly problematic, these areas warrant attention for owners to ensure continued optimal performance and longevity of the vehicle.