2005 Lexus GX470

The 2005 Lexus GX470 is a body-on-frame SUV known for its off-road capability, luxurious features, and Toyota reliability. It came with only one engine and transmission option: the 4.7L 2UZ-FE V8 engine producing 270 horsepower and 330 lb-ft of torque, paired with a 5-speed automatic transmission. Owners generally appreciate the GX470’s comfortable ride, strong V8 power, and Toyota’s reliability track record. Common dislikes include its relatively poor fuel economy, dated interior design (for some), and body roll when cornering.

Engine

4.7L 2UZ-FE V8

• Valve Cover Gasket Leak
  • Description/Symptoms: Oil leaking from the valve cover gaskets, leading to oil consumption, burning oil smell, and potential oil spots on the driveway.
  • Solution: Replacement of the valve cover gaskets.
  • Estimated Cost to Fix: $300 - $600
  • Recalls: None Found
• Exhaust Manifold Crack/Leak
  • Description/Symptoms: Ticking or hissing sound, especially upon cold start that diminishes as the engine warms up. Can also lead to decreased fuel economy.
  • Solution: Replacement of the cracked exhaust manifold.
  • Estimated Cost to Fix: $500 - $1000+ (depending on aftermarket vs. OEM and DIY vs. professional installation)
  • Recalls: None Found
• Secondary Air Injection System Failure
  • Description/Symptoms: Check Engine Light illuminated with codes related to the secondary air injection system (e.g., P0418, P2440, P2442). Can be noisy operation of the system.
  • Solution: Replacement of the secondary air injection pump, valves, or bypass valve, or installation of a bypass kit.
  • Estimated Cost to Fix: $500 - $1500+
  • Recalls: None Found

Transmission

A750F 5-Speed Automatic

• Shift Solenoid Failure
  • Description/Symptoms: Harsh or erratic shifting, difficulty shifting into certain gears, or transmission slipping.
  • Solution: Replacement of the faulty shift solenoid(s).
  • Estimated Cost to Fix: $300 - $800+ (depending on which solenoid(s) need replacing)
  • Recalls: None Found
• Torque Converter Failure
  • Description/Symptoms: Shuddering or vibration at certain speeds, especially under light acceleration, and/or poor fuel economy.
  • Solution: Replacement of the torque converter.
  • Estimated Cost to Fix: $800 - $2000+ (including transmission removal and installation)
  • Recalls: None Found

Suspension

• X-REAS Suspension Failure
  • Description/Symptoms: Leaking struts or shocks, a bouncy or unstable ride, uneven tire wear, and/or sagging of the vehicle on one side.
  • Solution: Replacement of the X-REAS system with new X-REAS components or conversion to a traditional suspension system (e.g., Bilstein or similar aftermarket setup).
  • Estimated Cost to Fix: $1500 - $4000+ (X-REAS replacement) or $800 - $2000+ (conversion to traditional suspension)
  • Recalls: None Found
• Air Suspension Compressor Failure (If Equipped)
  • Description/Symptoms: Vehicle sagging or not leveling properly, the air suspension compressor running constantly or not at all, and/or “AHC” (Active Height Control) light illuminated on the dashboard.
  • Solution: Replacement of the air suspension compressor.
  • Estimated Cost to Fix: $500 - $1500+
  • Recalls: None Found

Electrical

• Navigation Screen Failure
  • Description/Symptoms: Blank screen, flickering, or intermittent operation of the navigation/infotainment system.
  • Solution: Replacement or repair of the navigation unit. Repairing can be difficult and costly.
  • Estimated Cost to Fix: $300 - $1000+ for a used replacement; potentially more for a repair or new unit.
  • Recalls: None Found
• Power Window Motor Failure
  • Description/Symptoms: Window not moving up or down, or moving slowly and erratically.
  • Solution: Replacement of the power window motor.
  • Estimated Cost to Fix: $200 - $500+ per window
  • Recalls: None Found

Exterior

• Rust on Frame
  • Description/Symptoms: Visible rust, flaking, or perforation of the frame, especially in areas exposed to road salt.
  • Solution: Rust repair, frame reinforcement, or, in severe cases, frame replacement (very costly).
  • Estimated Cost to Fix: Varies greatly depending on the severity; $500 - $5000+ or more for extensive repairs or frame replacement.
  • Recalls: None Found

Interior

• Dashboard Cracking
  • Description/Symptoms: Cracks appearing on the dashboard surface, especially in areas exposed to sunlight.
  • Solution: Replacement of the dashboard or installation of a dashboard cover.
  • Estimated Cost to Fix: $500 - $2000+ for dashboard replacement; $50 - $200+ for a dashboard cover.
  • Recalls: None Found

Summary

The 2005 Lexus GX470 is generally a reliable vehicle, but owners should be aware of potential issues related to the engine (valve cover gaskets, exhaust manifolds, secondary air injection), transmission (shift solenoids, torque converter), and suspension (X-REAS, air suspension). Frame rust is a serious concern, especially in northern states. Electrical issues with the navigation screen and power windows are also not uncommon. The cost to repair these issues can range from a few hundred dollars for minor fixes to several thousand dollars for major repairs like suspension overhauls or frame work. Due diligence, including a thorough inspection by a qualified mechanic, is recommended before purchasing a used 2005 GX470.