2009 Mazda CX-9

2009 Mazda CX-9

Overview

The 2009 Mazda CX-9 is a mid-size crossover SUV that offered a blend of family-friendly practicality and a more engaging driving experience than many of its competitors. It was generally well-received for its styling, spacious interior, and available all-wheel-drive system. Reliability for the 2009 model year is considered average to good, with most owners reporting satisfaction. However, like any vehicle, there are specific areas that have seen more attention from mechanics and owners alike. This report focuses on documented technical issues beyond routine maintenance, providing insights into potential concerns for prospective buyers or current owners.

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Engine

3.7L V6

Intake Manifold Runner Control (IMRC) Failure

• Symptoms: Check Engine light illumination, rough idle, poor engine performance, P2004, P2005, P2006 DTCs.
• Solution: Replacement of the IMRC actuator or intake manifold assembly.
• Cost: $300 - $700

Variable Valve Timing (VVT) System Issues

• Symptoms: Rattling noise from the engine, especially on startup; check engine light; rough idle; reduced power.
• Solution: Replacement of VVT solenoids, phasers, or timing chain components.
• Cost: $500 - $1500

Transmission

6-Speed Automatic (FWD/AWD)

Transmission Fluid Leaks

• Symptoms: Leaking fluid, slipping gears, harsh shifting, overheating.
• Solution: Repair or replacement of seals, gaskets, or transmission cooler lines.
• Cost: $200 - $600

Torque Converter Issues

• Symptoms: Shuddering during acceleration, slipping, delayed engagement.
• Solution: Rebuilding or replacement of the torque converter.
• Cost: $800 - $1800

Suspension

Standard Chassis

Worn Control Arm Bushings

• Symptoms: Clunking noises over bumps, uneven tire wear, vague steering feel.
• Solution: Replacement of control arm bushings or the entire control arm assembly.
• Cost: $300 - $600

Strut Mount Bearing Failure

• Symptoms: Popping or creaking noise when turning the steering wheel, especially at low speeds.
• Solution: Replacement of the strut mount bearings.
• Cost: $200 - $400

Electrical

General Electrical System

Power Window Motor Failure

• Symptoms: Windows not operating, slow window operation.
• Solution: Replacement of the power window motor and regulator.
• Cost: $200 - $400

Alternator Failure

• Symptoms: Dimming headlights, battery warning light, electrical system malfunctions, dead battery.
• Solution: Replacement of the alternator.
• Cost: $400 - $700

Exterior

Body and Trim

No widespread issues reported.

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

Interior

Cabin Components

No widespread issues reported.

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

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Summary Verdict

The 2009 Mazda CX-9 generally presents a solid reliability record, particularly for its powertrain components when properly maintained. The most frequently cited issues revolve around the V6 engine’s variable valve timing system and intake manifold runner control, which can trigger check engine lights and affect performance. Transmission issues are less common but can include fluid leaks and torque converter problems. Suspension components like control arm bushings and strut mounts may require attention as the vehicle ages, leading to noise and handling degradation. Electrical gremlins, such as failing power window motors and alternators, are also noted. Overall, the CX-9 is a dependable choice, but potential buyers should be aware of these specific areas and ensure thorough pre-purchase inspections.