Summary
The Lexus GS 350 has 9 recalls covering 2006 through 2014 model years, with the most serious being a brake pedal pressure switch failure on 2013 models that can cause the brakes to apply on their own without the brake lights activating, creating a rear-collision risk for following traffic.
The 2013 model year carries the heaviest concentration of recalls. Alongside the brake switch issue, the low-pressure fuel pump on 2013 vehicles can fail and cause the engine to run rough, fail to start, or suddenly lose power while driving. There is also a steering concern specific to early-production 2013 examples: the variable gear ratio steering control unit can leave the steering wheel off-center after restarting the vehicle following a tight-angle park, which can cause the car to pull in an unexpected direction when pulling away.
Across the broader 2006-2014 production run, fuel pulsation damper diaphragms in vehicles equipped with the 3.5-liter V6 can harden and crack over time, allowing fuel to leak near potential ignition sources and raising the risk of an engine fire. This affects the widest span of the model's history and applies to both GS 350 and GS 450h variants in those years.
The 2006 model year has several of its own issues. Aluminum fuel rails can corrode when the vehicle runs certain ethanol-blended fuels, leading to plugged injectors or pinhole leaks that allow fuel to escape. Separately, a fuel pressure sensor on some 2006 vehicles may not have been tightened sufficiently at the factory, and a loose sensor can leak fuel past its gasket and threads. On 2006 all-wheel-drive models, if floor carpet near the accelerator pedal is reinstalled incorrectly after a service visit, the carpet's plastic pad can wedge the pedal in a partially pressed position and prevent it from returning to idle.
