2009 Lexus GX470

The 2009 Lexus GX470 is a body-on-frame mid-size luxury SUV known for its off-road capability, reliability, and comfortable ride. It came standard with a 4.7L V8 engine producing 263 horsepower and 323 lb-ft of torque, paired with a 5-speed automatic transmission. Owners often appreciate the GX470’s robust build quality, smooth V8 power, and luxurious interior. Common complaints include its relatively poor fuel economy and somewhat dated infotainment system.

Engine

4.7L 2UZ-FE V8

• Valve Cover Gasket Leaks
  • Description/Symptoms: Oil leaking from the valve cover onto the exhaust manifold, causing a burning smell. Visible oil residue around the valve covers.
  • Solution: Replace the valve cover gaskets.
  • Estimated Cost to Fix: $200 - $400+
  • Recalls: None Found
• Secondary Air Injection Pump Failure
  • Description/Symptoms: Check Engine Light with codes related to the secondary air injection system. Loud whining noise during cold starts. The system helps reduce emissions during startup.
  • Solution: Replace the secondary air injection pump and/or valves. Some owners opt for a bypass kit, although this might not be emissions-compliant in all areas.
  • Estimated Cost to Fix: $500 - $1200+
  • Recalls: None Found
• Exhaust Manifold Cracks
  • Description/Symptoms: Ticking noise, especially during cold starts, that may lessen as the engine warms up. Exhaust smell in the cabin.
  • Solution: Replace the cracked exhaust manifold.
  • Estimated Cost to Fix: $500 - $1500+
  • Recalls: None Found

Transmission

A750F 5-Speed Automatic

• Torque Converter Shudder
  • Description/Symptoms: A shudder or vibration felt during light acceleration, typically at lower speeds. Often described as feeling like driving over rumble strips.
  • Solution: Perform a transmission fluid flush, sometimes multiple times. In severe cases, the torque converter may need to be replaced.
  • Estimated Cost to Fix: $150 - $300+ for fluid flush; $800 - $1500+ for torque converter replacement.
  • Recalls: None Found

Suspension

• Air Suspension System (Rear) Leaks/Failure
  • Description/Symptoms: Rear of the vehicle sagging or sitting unevenly. Compressor running constantly or not at all. Warning lights on the dashboard.
  • Solution: Replace leaking air springs (bags) or the air suspension compressor. Some owners convert to coil springs for a more reliable, but less adjustable, system.
  • Estimated Cost to Fix: $400 - $1000+ per air spring; $500 - $1200+ for compressor; $800 - $1500+ for coil spring conversion.
  • Recalls: None Found
• Height Control Sensor Failure
  • Description/Symptoms: Warning lights, suspension system not working or adjusting ride height.
  • Solution: Replace the Height Control Sensor
  • Estimated Cost to Fix: $300 - $500
  • Recalls: None Found

Electrical

• Navigation Screen Failure
  • Description/Symptoms: Screen flickering, dimming, or completely failing. Touchscreen unresponsive.
  • Solution: Repair or replace the navigation unit. Aftermarket replacements are also an option.
  • Estimated Cost to Fix: $300 - $800+ for repair; $500 - $1500+ for replacement.
  • Recalls: None Found
• Mark Levinson Amplifier Failure
  • Description/Symptoms: No sound from the speakers, or distorted sound.
  • Solution: Replace the amplifier.
  • Estimated Cost to Fix: $600 - $1200
  • Recalls: None Found

Exterior

• Rust (Frame)
  • Description/Symptoms: Visible rust on the frame, especially in areas with heavy road salt use.
  • Solution: Rust repair or frame replacement in severe cases. Regular undercoating can help prevent rust.
  • Estimated Cost to Fix: Varies widely depending on the severity of the rust.
  • Recalls: None Found

Interior

• Power Seat Motor Failure
  • Description/Symptoms: Seat unable to move forward, backward, up, or down. Grinding noises when attempting to adjust the seat.
  • Solution: Replace the faulty seat motor or the entire seat mechanism.
  • Estimated Cost to Fix: $300 - $800+
  • Recalls: None Found

Summary

The 2009 Lexus GX470 is a generally reliable vehicle, but owners should be aware of potential issues such as valve cover gasket leaks, secondary air injection pump failure, air suspension problems, and navigation system failures. Frame rust can also be a concern, particularly in colder climates. While some repairs can be relatively inexpensive, others, such as air suspension or navigation system replacements, can be costly. Addressing these issues promptly can help maintain the GX470’s performance and longevity.