2006 INFINITI M45

The 2006 INFINITI M45 is a mid-size luxury sedan known for its powerful engine, sporty handling, and comfortable interior. It was offered with one engine option: a 4.5-liter V8 (VK45DE) producing 335 horsepower and 340 lb-ft of torque. It was paired with a 5-speed automatic transmission. Owners often praise the M45 for its performance and distinctive styling, but some common complaints include higher fuel consumption than comparable vehicles and some reliability issues related to the age of the car.

Engine

4.5L V8 (VK45DE)

• Timing Chain Tensioner Failure
  • Description/Symptoms: Rattling noise on startup, especially when cold. Can lead to timing chain slippage and potential engine damage if left unresolved.
  • 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
• Valve Cover Gasket Leaks
  • Description/Symptoms: Oil leaks from the valve covers, leading to burning smells, oil consumption, and potential oil dripping onto exhaust components.
  • Solution: Replacement of the valve cover gaskets.
  • Estimated Cost to Fix: $300 - $600+
  • Recalls: None Found
• Oil Consumption
  • Description/Symptoms: Excessive oil consumption requiring frequent top-offs.
  • Solution: This issue could stem from various causes. Before committing to more expensive repair, check for the sources listed above. If none of those apply, monitor oil consumption and add oil as needed. If oil consumption is severe, engine rebuild or replacement may be necessary.
  • Estimated Cost to Fix: $0 - $5,000+ (depending on the cause and solution)
  • Recalls: None Found

Transmission

5-Speed Automatic

• Transmission Slipping/Harsh Shifting
  • Description/Symptoms: Delayed or rough shifting between gears, slipping during acceleration, and general transmission performance issues. Often linked to worn valve bodies or low transmission fluid.
  • Solution: Transmission fluid flush and filter replacement (if not too late in the progression of the issue). If the problem persists, valve body replacement or a complete transmission rebuild/replacement may be required.
  • Estimated Cost to Fix: $200 - $3,500+
  • Recalls: None Found

Suspension

• Front Lower Control Arm Bushing Failure
  • Description/Symptoms: Clunking noises from the front suspension, especially when going over bumps. Loose or unstable handling.
  • Solution: Replacement of the lower control arm bushings or the entire lower control arm.
  • Estimated Cost to Fix: $300 - $800+
  • Recalls: None Found
• Rear Shock Absorber Leaks/Failure
  • Description/Symptoms: Bouncy ride, poor handling, and visible leaks from the rear shock absorbers.
  • Solution: Replacement of the rear shock absorbers.
  • Estimated Cost to Fix: $300 - $700+
  • Recalls: None Found

Electrical

• Intelligent Key Issues
  • Description/Symptoms: Intermittent or complete failure of the intelligent key system, preventing starting or unlocking the vehicle.
  • Solution: Replacement of the key fob battery, reprogramming of the key, or replacement of the keyless entry system module.
  • Estimated Cost to Fix: $50 - $500+
  • Recalls: None Found
• Radio/Navigation System Failures
  • Description/Symptoms: Intermittent or complete failure of the radio, navigation system, or display screen.
  • Solution: Repair or replacement of the affected unit. This can be costly due to the integrated nature of the system.
  • Estimated Cost to Fix: $100 - $1,000+
  • Recalls: None Found

Exterior

• Headlight Condensation/Yellowing
  • Description/Symptoms: Moisture buildup inside the headlight lenses, causing reduced visibility. Yellowing or clouding of the headlight lenses.
  • Solution: Polishing the headlights or replacing the headlight assemblies.
  • Estimated Cost to Fix: $50 - $800+
  • Recalls: None Found

Interior

• Sunroof Issues
  • Description/Symptoms: Sunroof not opening/closing properly, getting stuck, or leaking.
  • Solution: Sunroof track cleaning/lubrication, repair or replacement of sunroof motor or components.
  • Estimated Cost to Fix: $100 - $800+
  • Recalls: None Found

Summary

The 2006 INFINITI M45, while offering a luxurious and powerful driving experience, does have some common issues that prospective buyers should be aware of. Engine-related problems like timing chain tensioner failure and valve cover gasket leaks can be relatively expensive to address. Transmission issues, while not always prevalent, can also be costly. Suspension and electrical problems are also potential concerns. The severity and cost of repairs can vary greatly, but understanding these common issues can help buyers make informed decisions and budget for potential maintenance.