2005 INFINITI FX45

The 2005 INFINITI FX45 is a luxury crossover SUV that blends sporty performance with practical utility. The FX45 came equipped with a 4.5L VK45DE V8 engine producing 320 horsepower and 330 lb-ft of torque. A major selling point was its distinctive styling and performance-oriented handling. People often disliked the firm ride and limited cargo space compared to more traditional SUVs.

Engine

4.5L VK45DE V8

• Excessive Oil Consumption
  • Description/Symptoms: Owners report higher than normal oil consumption, requiring frequent top-offs between oil changes. Symptoms may include a burning oil smell and blue smoke from the exhaust.
  • Solution: In some cases, the issue can be related to worn valve stem seals. Replacing the valve stem seals can reduce oil consumption. In more severe cases, worn piston rings may be the cause, necessitating an engine rebuild or replacement.
  • Estimated Cost to Fix: $800 - $2,000+ (depending on the cause and repair needed).
  • Recalls: None Found
• Timing Chain Tensioner Failure
  • Description/Symptoms: A rattling noise from the front of the engine, especially on startup, can indicate a failing timing chain tensioner. If left unaddressed, this can lead to timing chain failure and severe engine damage.
  • Solution: Replacement of the timing chain tensioners, guides, and possibly the timing chain itself.
  • Estimated Cost to Fix: $1,200 - $2,500+
  • Recalls: None Found

Transmission

5-Speed Automatic Transmission

• Valve Body Issues
  • Description/Symptoms: Harsh or delayed shifting, slipping between gears, or a complete failure to shift can indicate problems with the valve body.
  • Solution: Replacing or rebuilding the valve body. In some cases, a complete transmission rebuild or replacement is necessary.
  • Estimated Cost to Fix: $800 - $3,500+ (depending on the repair needed).
  • Recalls: None Found

Suspension

• Front Lower Control Arm Bushing Failure
  • Description/Symptoms: Clunking or rattling noises from the front suspension, especially when going over bumps. Premature tire wear can also be a symptom.
  • Solution: Replacement of the lower control arm bushings or the entire lower control arm.
  • Estimated Cost to Fix: $300 - $800+ per side (depending on whether bushings or the entire arm are replaced).
  • Recalls: None Found
• Rear Shock Absorber Leaks
  • Description/Symptoms: The rear shocks may start to leak fluid over time, leading to a bouncy or unstable ride, especially over bumps.
  • Solution: Replacement of the rear shock absorbers.
  • Estimated Cost to Fix: $300 - $600+ for a pair.
  • Recalls: None Found

Electrical

• Battery Drain
  • Description/Symptoms: The battery drains overnight or within a few days, especially if the vehicle is not driven frequently.
  • Solution: Finding and addressing the parasitic drain. Common causes include faulty relays, aftermarket accessories, or a malfunctioning alternator. A professional electrical diagnostic is often needed.
  • Estimated Cost to Fix: $100 - $500+ (depending on the source of the drain and repair needed).
  • Recalls: None Found
• Gauge Cluster Issues
  • Description/Symptoms: Intermittent or complete failure of the gauge cluster, including the speedometer, tachometer, and fuel gauge.
  • Solution: Repair or replacement of the gauge cluster.
  • Estimated Cost to Fix: $300 - $800+
  • Recalls: None Found

Exterior

• Sunroof Issues
  • Description/Symptoms: The sunroof may fail to open or close properly, get stuck, or leak when closed. This can be due to a faulty motor, broken tracks, or clogged drain tubes.
  • Solution: Repair or replacement of the sunroof motor, tracks, or clearing of drain tubes.
  • Estimated Cost to Fix: $200 - $1,000+ (depending on the specific problem).
  • Recalls: None Found

Interior

• Navigation System Failure
  • Description/Symptoms: The factory navigation system may fail to boot up, display an error message, or provide inaccurate directions. The screen may also become unresponsive.
  • Solution: In some cases, updating the navigation system software can resolve the issue. Otherwise, repair or replacement of the navigation unit is necessary.
  • Estimated Cost to Fix: $300 - $1,000+
  • Recalls: None Found
• Seat Motor Failure
  • Description/Symptoms: The power seats may stop moving in one or more directions due to a faulty seat motor.
  • Solution: Replacement of the affected seat motor.
  • Estimated Cost to Fix: $200 - $500+ per motor.
  • Recalls: None Found

Summary

The 2005 INFINITI FX45 can be a fun and stylish vehicle but has some potential problem areas. Engine oil consumption and timing chain issues can be costly to repair. Suspension and electrical issues are also common, although potentially less expensive. The valve body issue in the transmission is another concern, as it could eventually require a transmission rebuild. Potential buyers should have a mechanic inspect the vehicle before purchase, paying close attention to these known issues. Addressing the oil consumption and valve body issues can be costly, with costs ranging up to $3,500 or more, depending on the severity of the issue.