2007 INFINITI M45

2007 INFINITI M45

Overview

The 2007 INFINITI M45 is a luxury sedan that offered a blend of performance and comfort. Powered by a robust V8 engine, it generally provided a solid ownership experience. However, like any vehicle of its age, certain components may exhibit wear or specific issues. This analysis focuses on documented reliability concerns beyond routine maintenance, providing insights into potential problem areas for owners and prospective buyers. The M45’s strong performance is a key selling point, but understanding its potential weak spots is crucial for long-term satisfaction and cost management.

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Engine

4.5L V8 (VK45DE)

Oil Leaks (Valve Covers/Gaskets)

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

Camshaft Position Sensor Failure

• Symptoms: Check Engine light, rough idle, stalling, difficulty starting.
• Solution: Replacement of the camshaft position sensor.
• Cost: $150 - $300

Transmission

5-Speed Automatic (RE5R05A)

Harsh Shifting / Delayed Engagement

• Symptoms: Jerky gear changes, hesitation when shifting into gear, transmission warning light.
• Solution: Transmission fluid and filter change, solenoid replacement, or 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 control arm bushings or the entire control arm assembly.
• Cost: $400 - $800

Electrical

General Electrical System

Infotainment System Glitches

• Symptoms: Screen freezing, unresponsive touch controls, navigation issues.
• Solution: Software update, or replacement of the head unit.
• Cost: $200 - $1500+

Power Window/Lock Actuator Failure

• Symptoms: Windows not rolling up/down, doors not locking/unlocking.
• Solution: Replacement of the faulty actuator.
• Cost: $150 - $350 per actuator

Exterior

Body and Trim

No widespread issues reported.

• Symptoms: N/A
• Solution: N/A
• Cost: Varies

Interior

Cabin Components

Heater Control Valve Failure

• Symptoms: No heat or inconsistent temperature control from the HVAC system.
• Solution: Replacement of the heater control valve.
• Cost: $200 - $400

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Summary Verdict

The 2007 INFINITI M45 is a capable luxury sedan with a powerful V8 engine. While generally reliable, common issues to be aware of include potential oil leaks from valve covers, camshaft position sensor failures, and transmission problems such as harsh shifting. Suspension components like control arm bushings can wear over time, leading to noise and handling issues. Electrical gremlins, particularly with the infotainment system and power accessories, are also noted. Addressing these potential problems proactively can help maintain the M45’s performance and comfort, making it a solid choice for those seeking a blend of luxury and power, provided they are prepared for potential maintenance.