2009 Lexus GS450h

The 2009 Lexus GS450h is a luxury hybrid sedan that was known for its smooth ride, fuel efficiency, and advanced technology for its time. It features a 3.5-liter V6 engine paired with an electric motor, producing a combined 335 horsepower and ample torque for responsive acceleration. While it’s praised for its reliability and luxury features, some owners have reported certain issues over time. Unlike the standard GS models, the GS450h only came with one powertrain option. Dislikes often revolve around the higher maintenance costs associated with hybrid systems compared to traditional gasoline vehicles.

Electric Motor

Electric Motor and Hybrid System

• Hybrid Battery Degradation
  • Description/Symptoms: Reduced electric-only driving range, decreased fuel economy, the hybrid system warning light illuminating on the dashboard, and eventually complete failure of the hybrid battery.
  • Solution: Replacement of the hybrid battery pack.
  • Estimated Cost to Fix: $3,000 - $8,000+
  • Recalls: None Found
• Inverter Failure
  • Description/Symptoms: Hybrid system malfunction light, loss of power, and potential inability to start the vehicle.
  • Solution: Replacement of the inverter assembly.
  • Estimated Cost to Fix: $4,000 - $6,000+
  • Recalls: None Found

Transmission

Electronically Controlled Continuously Variable Transmission (ECVT)

• No Issues Found

Suspension

• Air Suspension Issues (if equipped)
  • Description/Symptoms: If the vehicle is equipped with air suspension, the system may experience leaks, compressor failure, or ride height sensor malfunctions. This leads to a sagging suspension, uneven ride height, and a harsh ride.
  • Solution: Repair or replacement of the leaking air struts, air compressor, or ride height sensors.
  • Estimated Cost to Fix: $800 - $2,500+ per corner (strut replacement); $500 - $1,500 (compressor replacement).
  • Recalls: None Found

Electrical

• Navigation System Failure
  • Description/Symptoms: Navigation screen malfunctions, freezes, or becomes unresponsive.
  • Solution: Replacement of the navigation unit or professional repair if possible.
  • Estimated Cost to Fix: $500 - $2,000+ (replacement).
  • Recalls: None Found
• Mark Levinson Audio System Issues (if equipped)
  • Description/Symptoms: Failure of the amplifier, speakers, or other components of the premium audio system.
  • Solution: Component repair or replacement.
  • Estimated Cost to Fix: $200 - $1,500+ (depending on the component).
  • Recalls: None Found

Interior

• Dashboard Cracking
  • Description/Symptoms: Cracking of the dashboard surface, especially in hot climates.
  • Solution: Replacement of the dashboard (expensive) or installation of a dashboard cover.
  • Estimated Cost to Fix: $1,500 - $3,000+ (dashboard replacement); $100 - $300 (dashboard cover).
  • Recalls: None Found

Exterior

• HID Headlight Issues
  • Description/Symptoms: HID headlights flickering, dimming, or failing.
  • Solution: Replacement of the HID bulbs or ballast.
  • Estimated Cost to Fix: $100 - $500+
  • Recalls: None Found

Summary

The 2009 Lexus GS450h is generally a reliable luxury sedan, but like any vehicle, it has potential issues. The most significant concerns revolve around the hybrid system components, particularly the hybrid battery and inverter, which can be costly to repair or replace. Suspension issues with the air suspension (if equipped) can also be pricey. Interior and electrical problems are less frequent but can still occur. Overall, potential buyers should be aware of the potential hybrid system maintenance costs and factor those into their purchasing decision.