2005 INFINITI Q45

Introduction:

The 2005 INFINITI Q45 is a full-size luxury sedan known for its impressive performance and refined interior. It offers a powerful 4.5L V8 engine paired with a 5-speed automatic transmission. This combination produces 340 horsepower and 333 lb-ft of torque. Despite its strong reputation, the Q45 has encountered some issues that owners have reported.

Engine

• 4.5L V8
  • Timing chain failure: Premature wear or failure of the timing chain can cause engine damage. Symptoms may include rattling noises, reduced engine power, or the engine failing to start. Repair involves replacing the timing chain, tensioners, and guides. Estimated Cost to Fix: $2,000 - $3,500+
  • Intake manifold failure: Cracks or leaks in the intake manifold can lead to vacuum leaks, reduced engine performance, and rough idling. Replacement of the intake manifold is required for a fix. Estimated Cost to Fix: $1,000 - $2,000+
  • Oil consumption: Excessive oil consumption can be caused by worn piston rings or valve guides. Symptoms include low oil levels and increased oil consumption between oil changes. Replacement of affected components is necessary for repair. Estimated Cost to Fix: $2,500 - $5,000+

Transmission

• 5-speed automatic
  • Transmission slipping: Inability to properly engage gears, resulting in a loss of power or transmission failure. Replacement of the transmission is the most common solution. Estimated Cost to Fix: $3,000 - $5,000+

Suspension

• Front suspension noise: Wear or failure of the suspension components can cause noise while driving. Replacement of the worn components, such as control arms or bushings, may be necessary. Estimated Cost to Fix: $500 - $1,500+
• Rear suspension sag: Premature wear or failure of the rear suspension components can cause the vehicle to sag or lean to one side. Replacement of the affected components is typically required. Estimated Cost to Fix: $750 - $2,000+

Electrical

• Battery drain: Excessive battery drain can be caused by faulty components or electrical leaks. Troubleshooting and replacement of the affected components is required. Estimated Cost to Fix: $200 - $1,000+
• Malfunctioning sensors: Faulty sensors can trigger false warnings or malfunctions in the vehicle’s systems. Replacement of the affected sensor is necessary for a fix. Estimated Cost to Fix: $150 - $500+

Exterior

• Headlight condensation: Moisture buildup inside the headlights can impair visibility during night driving. Replacement of the affected headlight assembly may be required. Estimated Cost to Fix: $200 - $500+
• Sunroof leaks: Poor seals or damaged sunroof components can lead to leaks. Repair involves replacing the affected seals or components. Estimated Cost to Fix: $500 - $1,500+

Interior

• Center console trim peeling: The silver trim on the center console may peel or discolor over time. Replacement of the affected trim piece is the solution. Estimated Cost to Fix: $200 - $500+
• Power seat failure: Failure of the power seat motor or mechanisms can prevent proper seat adjustment. Replacement of the affected motor or components is necessary. Estimated Cost to Fix: $400 - $1,000+
• Climate control issues: Malfunctioning climate control components can affect temperature regulation, airflow, or defrosting. Replacement of the affected components is typically required. Estimated Cost to Fix: $300 - $1,200+

Summary:

The 2005 INFINITI Q45 is a capable vehicle with a powerful engine, but it has faced some issues that can be costly to repair. The most significant issues include timing chain failure, transmission slipping, and suspension noise. Owners should be aware of these potential problems and consider preventive maintenance or regular inspections to mitigate their impact.