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2009 Acura MDX

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By Research the Car 4 min read

The 2009 Acura MDX is a popular luxury SUV known for its reliability, comfortable ride, and spacious interior. The MDX came equipped with a single engine option: a 3.7-liter V6 producing 300 horsepower and 270 lb-ft of torque. It was paired with a 5-speed automatic transmission. Owners often praise the MDX for its performance, handling, and Acura’s reputation for reliability. Common dislikes include less-than-stellar fuel economy and some reported issues with certain electronic components.

Engine

3.7L V6

  • Oil Consumption
    • Description/Symptoms: Some owners report excessive oil consumption, requiring frequent top-offs between oil changes. This can sometimes be related to worn piston rings or valve seals.
    • Solution: Depending on the severity, solutions range from using a heavier-weight oil, performing an engine flush, or, in more severe cases, replacing the piston rings or valve seals.
    • Estimated Cost to Fix: $500 - $3,000+
    • Recalls: None Found
  • VTEC Solenoid Failure
    • Description/Symptoms: The VTEC (Variable Valve Timing and Lift Electronic Control) solenoid can fail, leading to a loss of power, rough idle, and potentially a check engine light.
    • Solution: Replacement of the faulty VTEC solenoid.
    • Estimated Cost to Fix: $200 - $400
    • Recalls: None Found

Transmission

5-Speed Automatic

  • Torque Converter Issues
    • Description/Symptoms: Shuddering during acceleration, particularly at lower speeds, can indicate a failing torque converter.
    • Solution: Replacement of the torque converter or, in some cases, a complete transmission rebuild.
    • Estimated Cost to Fix: $800 - $3,000+
    • Recalls: None Found
  • Shift Flare
    • Description/Symptoms: A momentary increase in engine RPMs between shifts, without a corresponding increase in vehicle speed (shift flare), can indicate internal transmission wear.
    • Solution: Fluid change, valve body replacement, or full transmission rebuild/replacement, depending on severity.
    • Estimated Cost to Fix: $100 (fluid change) - $3,000+
    • Recalls: None Found

Suspension

  • Rear Suspension Sag
    • Description/Symptoms: Some owners report the rear suspension sagging over time, leading to a less comfortable ride and reduced handling performance. This can be attributed to worn-out shocks or springs.
    • Solution: Replacement of the rear shocks and/or springs.
    • Estimated Cost to Fix: $300 - $800
    • Recalls: None Found
  • Strut Mount Noise
    • Description/Symptoms: Clicking or popping sounds from the front suspension, especially when turning or going over bumps, can indicate worn strut mounts.
    • Solution: Replacement of the strut mounts.
    • Estimated Cost to Fix: $200 - $500
    • Recalls: None Found

Electrical

  • Power Tailgate Problems
    • Description/Symptoms: The power tailgate can become unreliable, failing to open or close properly, or getting stuck mid-operation. This is often due to a faulty motor, actuator, or sensor.
    • Solution: Diagnosis of the specific component failure (motor, actuator, or sensor) and subsequent replacement.
    • Estimated Cost to Fix: $300 - $800+
    • Recalls: None Found
  • Navigation System Issues
    • Description/Symptoms: The navigation system screen can fail, freeze, or display incorrect information. The system may also have trouble acquiring GPS signal.
    • Solution: Software update (if available), replacement of the navigation unit, or repair of faulty wiring.
    • Estimated Cost to Fix: $100 - $1,000+
    • Recalls: None Found
  • Bluetooth Connectivity Issues
    • Description/Symptoms: Difficulty pairing phones, dropped calls, or poor sound quality can be common problems with the Bluetooth system.
    • Solution: Update Bluetooth software if available, or replace the Bluetooth module.
    • Estimated Cost to Fix: $100 - $400
    • Recalls: None Found

Exterior

  • Automatic Headlight Sensor Failure
    • Description/Symptoms: Automatic headlights will not automatically turn on at night or will be constantly on, even in daylight.
    • Solution: Replacement of the automatic headlight sensor.
    • Estimated Cost to Fix: $100 - $200
    • Recalls: None Found

Interior

  • Sunroof Issues
    • Description/Symptoms: The sunroof may become stuck, fail to open or close properly, or leak water. This can be caused by a faulty motor, broken tracks, or clogged drain tubes.
    • Solution: Diagnosis of the specific cause (motor, tracks, or drain tubes) and repair or replacement of the affected components. Cleaning out clogged drain tubes.
    • Estimated Cost to Fix: $50 - $800+
    • Recalls: None Found
  • Climate Control Issues
    • Description/Symptoms: Inconsistent temperatures, failure to blow hot or cold air, or strange noises from the HVAC system can indicate a problem with the climate control system. This may be related to a faulty actuator, blend door, or compressor.
    • Solution: Diagnosis of the specific component failure and subsequent repair or replacement.
    • Estimated Cost to Fix: $200 - $1,000+
    • Recalls: None Found

Summary

The 2009 Acura MDX is a generally reliable vehicle, but it does have some common issues that potential buyers should be aware of. Engine and transmission problems, such as oil consumption and torque converter issues, can be costly to repair. Electrical issues, especially with the power tailgate and navigation system, are also relatively common. While the severity of these issues varies, being informed can help buyers make a wise decision and potentially negotiate a better price. The overall cost to maintain this vehicle and perform repairs can be high.

Acura, MDX
Acura MDX 2009
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