There are 3 stored owner reports matching the speed control & cruise leading-label group for the 2017 Toyota Sienna in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 3 of 3 matching reports.
Open the full vehicle complaint log (all categories)Today 4/7/23 My 2017 Toyota Sienna accelerated on its own. I was driving my 4 children to school and we were at a stop light. When I took my foot of the brake to start making a turn the car gunned it around the corner. It scared everyone in the car half to death. Thankfully no one was hurt but it looks like others on here haven't been so lucky with this issue. I hope toyota does the right thing a d fixes this issue before more people die.
TL* THE CONTACT OWNS A 2017 TOYOTA SIENNA. WHILE DRIVING APPROXIMATELY 25 MPH, THE VEHICLE HESITATED AND ACCELERATED FORWARD. THE CONTACT STATED THAT THE FAILURE OCCURRED AT LEAST ONCE A DAY FOR THE PAST THREE MONTHS. THE VEHICLE WAS NOT TAKEN TO A DEALER OR AN INDEPENDENT MECHANIC FOR DIAGNOSTIC TESTING. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 5,500.
TL* THE CONTACT OWNS A 2017 TOYOTA SIENNA. THE CONTACT STATED THAT WHILE THE ACCELERATOR PEDAL WAS DEPRESSED, THE VEHICLE FAILED TO RESPOND. IN ADDITION, THE VEHICLE WAS SHIFTED INTO PARK THEN INTO THE DRIVE POSITION AND RESTARTED THE VEHICLE BUT STILL THE VEHICLE FAILED TO RESPOND. THE CONTACT MENTIONED THE ACCELERATOR PEDAL WAS DEPRESSED WITH FORCE AND THE VEHICLE STARTED TO OPERATE HOWEVER, AN ABNORMAL GRINDING NOISE WAS COMING FROM UNDERNEATH THE VEHICLE. THE VEHICLE WAS TOWED TO A BILL FOX TOYOTA AT 755 S ROCHESTER RD, ROCHESTER HILLS, MI 48307 WHERE THE FAILURE WAS UNDETERMINED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THAT APPROXIMATE FAILURE MILEAGE WAS 2,873.
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.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 29, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.