There are 2 owner-reported engine complaints for the 2006 Lexus GXin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
TL* THE CONTACT OWNS A 2006 LEXUS GX470. WHILE DRIVING APPROXIMATELY 35 MPH AND ATTEMPTING TO MERGE ONTO THE HIGHWAY, THE VEHICLE DID NOT ACCELERATE PAST 50 MPH. IN ADDITION, THE CHECK ENGINE, VEHICLE STABILITY CONTROL, AND TRACTION CONTROL WARNING INDICATORS ILLUMINATED. THE CONTACT CONTINUED DRIVING AND STATED THAT THE FAILURE OCCURRED FOR APPROXIMATELY THREE WEEKS. THE VEHICLE WAS TAKEN TO LEXUS OF GREENVILLE (2660 LAURENS RD, GREENVILLE, SC 29607) WHERE IT WAS DIAGNOSED THAT THE SECONDARY AIR PUMP AND VALVE SWITCH FAILED AND NEEDED REPLACEMENT. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 168,000.
UNINTENDED ACCELERATION OF A 2006 LEXUS GX470 WHEN SHIFTING FROM PARK TO DRIVE. THIS IS THE FIRST KNOWN OCCURRENCE OF THIS ABNORMAL ACTIVITY IN THE 6 MONTHS I HAVE OWNED THIS VEHICLE. THE ENGINE RPMS WENT FROM IDLE TO WIDE OPEN THROTTLE FOR 2-3 SECONDS WHEN I SHIFTED THE TRANSMISSION INTO DRIVE. SINCE MY FOOT WAS ON THE BRAKE I WAS ABLE TO KEEP THE VEHICLE UNDER CONTROL. THE ENGINE RETURNED TO NORMAL IDLE ON ITS OWN. FORTUNATELY, I WAS IN THE MIDDLE OF AN EMPTY PARKING LOT AND THERE WERE NO DAMAGES AND NO INJURIES. THE DEALER (WOODFIELD LEXUS, SCHAUMBURG ILLINOIS) FOUND NO FAULTS OR FAILURES UPON INITIAL INSPECTION OF THE VEHICLE. TOYOTA MOTOR SALES, NORTH AMERICA IS SENDING ME INSTRUCTIONS ON WHAT STEPS I SHOULD TAKE TO ADDRESS THIS DANGEROUS AND UNSAFE ISSUE. I WAS TOLD THESE INSTRUCTIONS SHOULD ARRIVE IN THE MAIL WITHIN 7-10 DAYS. *TR
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026