What are the most common Lexus GS problems?
According to Au7o's analysis of 3,300+ owner reports, the 2009 Lexus GS has 7 documented issues. The most frequently reported are: Hybrid Inverter Coolant Pump Failure - GS 450h (P0A93), ECB Brake Actuator Pump Motor Failure - GS 430 / GS 450h / GS 460, Fuel Pulsation Damper Diaphragm Cracks and Leaks Fuel - 2GR-FSE (Recall 18V432000). Of these, 4 are rated critical and should be addressed promptly.
Is the Lexus GS reliable?
The 2009 Lexus GS has 7 known issues documented across 3,300+ owner reports. 4 issues are rated critical: Hybrid Inverter Coolant Pump Failure - GS 450h (P0A93) and ECB Brake Actuator Pump Motor Failure - GS 430 / GS 450h / GS 460 and Fuel Pulsation Damper Diaphragm Cracks and Leaks Fuel - 2GR-FSE (Recall 18V432000) and VVT Gear Assembly Bolts Loosen and Sprocket Separates - 2GR-FSE (Recall 13V395000). Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
How much does it cost to fix common Lexus GS problems?
Repair costs for known Lexus GS issues range from $0 to $4,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Hybrid Inverter Coolant Pump Failure - GS 450h (P0A93), typically costs $400-$900 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What is the 2007-2011 Lexus GS Hybrid Inverter Coolant Pump Failure - GS 450h (P0A93)?
The GS 450h carries a second, completely separate cooling circuit for the power inverter, consisting of an electric water pump, its own radiator and a fan. That electric pump fails - it is a known wear item on the S190 hybrid - and when circulation stops the inverter overheats. T… Repairs typically run $400-$900. Severity: high.
What is the 2006-2011 Lexus GS ECB Brake Actuator Pump Motor Failure - GS 430 / GS 450h / GS 460?
S190 GS models fitted with the electronically controlled brake (ECB) system - the GS 430, GS 450h and GS 460 - use a brake actuator assembly containing an electric pump motor that maintains accumulator pressure. The pump motor's commutator wears, and once worn the motor can stop… Repairs typically run $900-$4,500. Severity: high.
What is the 2007-2011 Lexus GS Fuel Pulsation Damper Diaphragm Cracks and Leaks Fuel - 2GR-FSE (Recall 18V432000)?
The fuel delivery pipe (fuel rail) on 2007-2011 GS 350 and GS 450h models with the 2GR-FSE 3.5L V6 carries pulsation dampers whose rubber diaphragms harden with age and heat cycling. Once hardened, the diaphragm cracks and gasoline leaks from the damper on top of the engine. A fu… Repairs typically run $0-$0. Severity: high.
What is the 2007-2011 Lexus GS VVT Gear Assembly Bolts Loosen and Sprocket Separates - 2GR-FSE (Recall 13V395000)?
On 2007-2011 GS 350 vehicles with the 2GR-FSE V6 built 19 June 2006 through 12 July 2011, the bolts that secure the housing and the sprocket of the variable valve timing gear assembly can loosen. The loosening is driven by abnormal impacts generated inside the gear assembly right… Repairs typically run $0-$0. Severity: high.
What is the 2006-2012 Lexus GS Dashboard Melting and Sticky Surface?
The GS dashboard suffers from the same melting and sticky surface defect as other Lexus models of this era. Heat exposure causes the dashboard material to chemically degrade, resulting in a shiny, tacky surface that creates dangerous glare on the windshield. This was a widespread… Severity: medium.
What is the 2006-2015 Lexus GS Power Steering Rack Seal Leak?
The power steering rack develops internal seal leaks that cause power steering fluid loss. The leak typically appears at the inner tie rod boots where fluid seeps past the rack seals. Low fluid levels lead to increased steering effort and pump whining noise, and eventually the ra… Repairs typically run $800-$2,000. Severity: medium.
What is the 2006-2020 Lexus GS Front Timing Chain Cover and Cam Housing Oil Leak - 2GR-FSE (FIPG Sealant Failure)?
The 2GR family V6 - including the 2GR-FSE fitted to the S190 GS 350 / GS 450h and the L10 GS 350 - seals its front timing chain cover and cam housings with FIPG (formed-in-place gasket) sealant rather than a solid gasket. Over years of heat cycling the sealant hardens, shrinks an… Repairs typically run $2,400-$4,000. Severity: medium.
