There are 2 stored owner reports matching the driver assist & adas leading-label group for the 2019 Toyota Highlander 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 2 of 2 matching reports.
Open the full vehicle complaint log (all categories)DRIVING ON A TWO LANE ROAD FOLLOWING A CAR IN FRONT OF ME. CRUISE IS ON AND THE CAR IN FRONT OF ME IS NOT AFFECTING MY SPEED. THE CAR IN FRONT OF ME TURNS LEFT INTO THEIR DRIVEWAY AND IS COMPLETELY OFF THE ROADWAY. MY CAR BRAKES VERY HARD LIKE THERE IS SOMETHING IN FRONT OF ME. THEIR WAS NO ON COMING TRAFIIC. I'VE HAVE HAD THIS HAPPEN AGAIN BUT THE OTHER CAR WAS TURNING RIGHT. THE CAR WAS COMPLETELY OFF THE ROADWAY AND AGAIN MY CAR STARTS BRAKING VERY HARD. I WAS ALMOST REAR ENDED BY THE CAR BEHIND ME.
I was using the adaptive cruise control on I-68 in Western Maryland. I was in the fast lane (on the far left of three uphill lanes). A dump truck was in the center lane going well below the speed limit. The road curved to the left at the point where I got up to the dump truck. There was no one in front of me in my outside lane. My car sensed the presence and speed of the dump truck and slowed me abruptly. There was considerable risk to me and to the driver of a white pick-up truck that was behind me, and who was also driving at passing speed. We were both going approximately 75 mph when my car slowed--a slowing that does not display brake lights. The cruise control has not been inspected. It is the default setting on ignition. I routinely disable it, opting for regular cruise, each time I use it, but the potential is always there for me and for other owners. If there was any sort of warning (I don't remember) it would have been inadequate to prevent an accident. The alertness of the pick-up truck driver saved us both a collision.
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.