2008 INFINITI FX45
2008 INFINITI FX45
Overview
The 2008 INFINITI FX45 is a luxury performance SUV known for its distinctive styling and potent V8 engine. While generally considered a reliable vehicle, like any car, it has specific areas that have seen more attention from owners regarding potential issues. This analysis focuses on documented technical reliability concerns beyond routine maintenance, providing insights into common problems and their potential resolutions for owners and prospective buyers. The FX45’s robust V8 powertrain and sophisticated all-wheel-drive system contribute to its driving dynamics but also present potential areas for mechanical scrutiny.
Engine
4.5L V8 (VK45DE)
Oil Leaks (Valve Covers/Gaskets)
- Symptoms: Visible oil residue around the engine, burning oil smell, low oil level.
- Solution: Replacement of valve cover gaskets and/or 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 guides.
- Cost: $1,200 - $2,500
Transmission
5-Speed Automatic (RE5R05A)
Harsh Shifting / Delayed Engagement
- Symptoms: Jerky gear changes, hesitation when shifting into drive or reverse, slipping.
- Solution: Transmission fluid and filter service, solenoid replacement, or full transmission rebuild.
- Cost: $400 - $3,000+
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 - $1,200
Alternator
Premature Failure
- Symptoms: Dimming headlights, battery warning light, difficulty starting, dead battery.
- Solution: Replacement of the alternator.
- Cost: $400 - $800
Exterior
Standard Chassis
No Major Issues
- Symptoms: No widespread issues reported.
- Solution: No widespread issues reported.
- Cost: No widespread issues reported.
Interior
Standard Interior
No Major Issues
- Symptoms: No widespread issues reported.
- Solution: No widespread issues reported.
- Cost: No widespread issues reported.
Summary Verdict
The 2008 INFINITI FX45, powered by its 4.5L V8 engine and paired with a 5-speed automatic transmission, offers a compelling blend of performance and luxury. While generally reliable, common concerns include potential oil leaks from valve covers and wear on the timing chain tensioners, which can manifest as engine noise. The transmission may experience issues with harsh shifting or delayed engagement, often requiring fluid services or component replacements. Suspension components, particularly control arm bushings, can wear over time, leading to noise and handling degradation. Electrical systems, including the Body Control Module and alternator, have also been noted for occasional failures. Despite these potential issues, with proper maintenance and timely repairs, the FX45 can remain a dependable and enjoyable vehicle.