Problems · by component
2003 Toyota Highlander vehicle speed control problems
31 owner complaints to NHTSA about the 2003 Toyota Highlander cite vehicle speed control, 11% of all 270 complaints for this model year.
Complaints
31
11% of all complaints
Crashes
17
Reported by owners
Fires
0
Reported by owners
Injuries
5
Reported by owners
What owners say about the vehicle speed control
Verbatim from NHTSA complaints, newest first
“TL* THE CONTACT OWNS A 2003 TOYOTA HIGHLANDER. WHILE DRIVING 20 MPH, THE VEHICLE UNINTENTIONALLY ACCELERATED AT HIGH SPEEDS WITHOUT WARNING. THE CONTACT WAS ABLE TO BRING THE VEHICLE TO A COMPLETE STOP AND TURN OFF THE ENGINE. THE VEHICLE WAS NOT TAKEN TO A DEALER OR INDEPENDENT MECHANIC FOR DIAGNOSTIC TESTING OR REPAIRS. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 185,000.”
“TL* THE CONTACT OWNED A 2003 TOYOTA HIGHLANDER. WHILE THE VEHICLE WAS IN REVERSE, IT ACCELERATED INDEPENDENTLY. THE CONTACT STATED THAT THE BRAKE PEDAL WAS DEPRESSED, BUT FAILED TO EFFECTIVELY SLOW DOWN THE VEHICLE. THE GEAR SHIFTER BUTTON WAS PUSHED INTO DRIVE AND THE VEHICLE SPED FORWARD AND CRASHED INTO A TREE. THE AIR BAGS FAILED TO DEPLOY. THERE WERE NO INJURIES AND A POLICE REPORT WAS NOT FILED. THE VEHICLE WAS TOWED TO AN INDEPENDENT MECHANIC. THE FAILURE RECURRED TWICE PRIOR TO THE CRASH. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 150,000. THE VEHICLE WAS DESTROYED. *JS”
“SATURDAY JUNE 18 2016 AT 6:40 A.M. DRIVING ON TULLY ROAD IN MY 2003 TOYOTA HIGHLANDER. MY SPEED WAS 35 MILES PER HOUR WHEN THE CAR SUDDENLY ACCELERATED AT A HIGH RATE OF SPEED. I APPLIED MY BRAKES TO SLOW DOWN THE HIGHLANDER THIS HAD NO EFFECT ON SLOWING DOWN THE HIGHLANDER. THE BRAKES WENT INTO ANTI LOCKING MODE THE WHEELS STARTED TO PULSATE. WHILE THIS WAS HAPPENING MY FOOT WAS NOT ON THE ACCELERATOR , BUT ON THE BRAKES. THE HIGHLANDER WAS NOT SLOWING DOWN BUT INCREASING SPEED. I DOWN SHIFTED INTO A LOWER GEAR, THE ENGINE RACED AT A HIGH RPMS. I THEN PUT THE CAR IN NEUTRAL THE RPMS STILL RACING AT A HIGH RATE. I THEN APPLIED THE BRAKES AGAIN TO SLOW DOWN. THE HIGHLANDER STARTED TO SLOW DOWN I THEN TURNED OFF THE ENGINE AND THEN CAME TO A STOP. I WAITED FOR A MINUTE AND STARTED THE CAR THE ENGINE RACED AT A HIGH RPMS AS IF MY FOOT WAS PUSHED ALL THE WAY DOWN ON THE ACCELERATOR, BUT MY FOOT WAS NOT ON THE GAS PEDAL. I WAITED AGAIN A FEW MINUTES TO START THE HIGHLANDER , THE SAME HIGH RPMS HAPPENING AGAIN. A FEW MINUTES LATER I TRIED AGAIN TO START THE HIGHLANDER AND THIS TIME THE HIGHLANDER IDLED NORMAL. I TURNED THE HIGHLANDER AROUND AND WENT HOME WHICH WAS…”
“PULLING INTO A PARKING SPACE AT KAISER HOSPITAL AS I HIT THE BRAKE THE CAR UNEXPECTEDLY ACCELERATED. THE CAR SPED FORWARD WHILE MY FOOT WAS STILL ON THE BRAKE. I HIT A TREE CAUSING DAMAGE TO THE LEFT FRONT AREA OF THE CAR (LIGHTS, FENDER, BUMPER) HAD CAR REPAIRED. AT THE TIME I THOUGHT THAT I HAD ACCIDENTALLY HIT THE GAS PEDAL;HOWEVER, ONE MONTH LATER WHILE APPROACHING AN INTERSECTION, AS I STOPPED, THE SAME THING HAPPENED. LUCKILY NO CAR OR PEDESTRIAN WAS IN THE INTERSECTION. I WAS ABLE TO STOP THE CAR BY SHIFTING INTO PARK. TOOK THE CAR TO MY MECHANIC. HE WAS UNABLE TO REPLICATE THE PROBLEM. SINCE THIS UNEXPECTED ACCELERATION OCCURRED IN THE SAME WAY (COMING TO A STOP WITH FOOT ON BRAKE AND GEAR-SHIFT IN DRIVE) , IN A FIVE WEEK PERIOD, IT COULD BE A TRANSMISSION OR ACCELERATER PROBLEM. I NO LONGER FEEL CONFIDENT DRIVING THE CAR AND CONSIDER IT UNSAFE.”
“TL* THE CONTACT OWNED A 2003 TOYOTA HIGHLANDER. THE CONTACT STATED THAT WHILE THE BRAKE PEDAL WAS DEPRESSED, THE VEHICLE ACCELERATED RAPIDLY WITHOUT WARNING CAUSING A CRASH. THE CONTACT SUSTAINED INJURIES TO HER LEFT FOOT. MEDICAL ATTENTION WAS REQUIRED. A POLICE REPORT WAS FILED. THE VEHICLE WAS TOWED AND DEEMED DESTROYED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 51,082.”
“GRANDMOTHER WAS LEAVING AND DROVE THROUGH A CLOSED WROUGHT IRON GATE THAT WAS OVER 10' TALL AND 16' WIDE. CONTINUED ACCELERATING THROUGH A PARKING LOT ACROSS THE STREET, DROVE OVER A LARGE DECORATIVE BOULDERS AND CAME TO HALT AFTER CRASHING INTO A NEIGHBORS FENCE. SHE SAID THAT SHE ATTEMPTED TO STOP IN FRONT OF HER GATE TO OPEN IT BUT THE BREAKS WOULD NOT WORK AND THE CAR KEPT ACCELERATING. THANKFULLY IT ENDED HOW IT DID LEAVING HER WITH MINOR INJURIES. IT IS ALSO DISGUSTING KNOWING THAT IT COULD HAVE BEEN MUCH WORSE AND IF A CAR DEFECT IS THE REASON NOTHING WILL BE DONE UNTIL DEATHS BEGIN TO OCCUR. *TR”
Showing 6 of 31 reports. Read every report on NHTSA.gov.
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 10, 2026NHTSA vehicle page
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.