2013 INFINITI QX56

The 2013 INFINITI QX56 is a full-size luxury SUV known for its powerful engine, spacious interior, and comfortable ride. It comes equipped with a 5.6L V8 engine that produces 400 horsepower and 413 lb-ft of torque, paired with a 7-speed automatic transmission. Owners generally praise its towing capacity, smooth ride, and luxurious features. Common complaints include relatively poor fuel economy, large size making it difficult to maneuver in tight spaces, and some reliability concerns related to specific components.

Engine

5.6L VK56VD V8

• Timing Chain Tensioner Failure
  • Description/Symptoms: A rattling noise upon start-up, especially when cold. This is due to a loss of oil pressure in the tensioner, causing the timing chain to slap against the guides. If left unaddressed, it can lead to significant engine damage.
  • Solution: Replace the timing chain tensioner, guides, and potentially the timing chain itself if it has stretched.
  • Estimated Cost to Fix: $1,500 - $3,000+
  • Recalls: None Found
• Catalytic Converter Failure
  • Description/Symptoms: Check engine light illuminated with codes related to catalytic converter efficiency (e.g., P0420, P0430). Decreased engine performance and fuel economy may also be noticeable.
  • Solution: Replace the faulty catalytic converter(s).
  • Estimated Cost to Fix: $1,500 - $3,000+ (per converter)
  • Recalls: None Found
• Coolant Leaks
  • Description/Symptoms: Low coolant levels, overheating, and visible coolant leaks under the vehicle. Potential leak locations include radiator hoses, water pump, and radiator itself.
  • Solution: Identify and repair the source of the leak. This may involve replacing hoses, the water pump, or the radiator.
  • Estimated Cost to Fix: $100 - $1,000+ depending on the component
  • Recalls: None Found

Transmission

7-Speed Automatic (RE7R01A)

• Valve Body Issues
  • Description/Symptoms: Harsh or delayed shifting, slipping between gears, and occasional transmission failure. Often more pronounced when the transmission is cold.
  • Solution: Replacement of the valve body or complete transmission replacement
  • Estimated Cost to Fix: $800 - $4,000+ depending on the fix
  • Recalls: None Found
• Torque Converter Failure
  • Description/Symptoms: Shuddering, especially at lower speeds. Can also cause issues with locking and unlocking.
  • Solution: Torque Converter replacement
  • Estimated Cost to Fix: $1,200 - $2,500+
  • Recalls: None Found

Suspension

• Air Suspension Failure (If Equipped)
  • Description/Symptoms: The vehicle sitting unevenly, sagging in the rear, or a harsh ride. Warning lights related to the air suspension system may illuminate on the dashboard. The air compressor may also run excessively or fail completely.
  • Solution: Diagnosis and repair of the air suspension system. This may involve replacing the air struts, air compressor, height sensors, or air lines.
  • Estimated Cost to Fix: $500 - $2,000+ (per component)
  • Recalls: None Found
• Rear Automatic Leveling Suspension
  • Description/Symptoms: Sagging rear suspension when towing or carrying heavy loads, noisy operation from the leveling system compressor.
  • Solution: Replacement of shocks, compressor, or height sensors as needed.
  • Estimated Cost to Fix: $400-$1500+ depending on component.
  • Recalls: None Found

Electrical

• Navigation/Infotainment System Malfunctions
  • Description/Symptoms: The navigation screen freezing, the system failing to respond to inputs, or complete system failure. Bluetooth connectivity issues and audio problems are also common.
  • Solution: Software updates or replacement of the navigation/infotainment unit.
  • Estimated Cost to Fix: $100 (software update) - $1,500+ (unit replacement)
  • Recalls: None Found
• Battery Drain Issues
  • Description/Symptoms: The battery draining overnight or within a few days of being parked. This can be caused by a parasitic drain from a faulty module or accessory.
  • Solution: Diagnose and eliminate the source of the parasitic drain. This may involve replacing a faulty module or disconnecting an aftermarket accessory.
  • Estimated Cost to Fix: $100 - $500+ depending on the source of the drain
  • Recalls: None Found

Exterior

• Power Liftgate Problems
  • Description/Symptoms: The power liftgate failing to open or close properly, getting stuck in an intermediate position, or making unusual noises.
  • Solution: Diagnosis and repair of the power liftgate system. This may involve replacing the liftgate struts, motor, or latch.
  • Estimated Cost to Fix: $300 - $1,000+
  • Recalls: None Found

Interior

• Heated/Cooled Seat Issues
  • Description/Symptoms: The heated or cooled seats failing to function properly. This can be due to a faulty heating element, blower motor, or control module.
  • Solution: Diagnosis and repair of the heated/cooled seat system. This may involve replacing the heating element, blower motor, or control module.
  • Estimated Cost to Fix: $200 - $800+ (per seat)
  • Recalls: None Found

Summary

The 2013 INFINITI QX56, while a luxurious and capable SUV, does have some known reliability issues. The most concerning are the potential for timing chain tensioner failure and valve body issues in the transmission, as these can lead to costly repairs. Air suspension problems (if equipped), navigation/infotainment malfunctions, and power liftgate issues are also relatively common. Overall, a thorough inspection and service history review are recommended before purchasing a used 2013 QX56, and prospective buyers should be prepared for potential repairs. While not all vehicles will experience these issues, their prevalence warrants consideration.