There are 3 stored owner reports matching the visibility & wipers leading-label group for the 2021 Toyota 4Runner 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)The contact owns a 2021 Toyota 4Runner. The contact stated while driving approximately 70 MPH, the sunroof exploded, sending glass inside the cabin of the vehicle. The vehicle was taken to a local dealer where it was diagnosed with needing the sunroof to be replaced however, the vehicle was not repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 2,800.
I was driving my new car with less than 500 miles on a highway with no other cars around and nothing overhead. It sounded like a gun went off then I could hear the glass falling sliding around on the sunroof shade. The glass was blown outward proving nothing fell and broke it. A Toyota dealers is replacing the sunroof but refuse to accept responsibility and let warranty pay. My 2 year old daughter was in the cover and I’m so thankful I had the sun roof shade closed because glass would have been sprayed over all of us.
WHILE DRIVING IN A SNOWSTORM ON AN INTERSTATE HIGHWAY AT NIGHT ON 1/25/2021, TWO IMPORTANT SAFETY SYSTEMS FAILED DUE TO ICE AND SNOW BUILDUP ON THE VEHICLE. FAILURE 1: THE PRE COLLISION SYSTEM (PCS) WARNING LIGHT ILLUMINATED INDICATING TEMPORARY FAILURE OF THE PCS SYSTEM (SEE PHOTO 1). THIS WAS DUE TO ICE AND SNOW BUILDUP ON THE FORWARD SENSOR, LOCATED ON THE FRONT GRILLE (SEE PHOTO 2). PROBLEM COULD ONLY BE RECTIFIED BY STOPPING AND PHYSICALLY REMOVING THE ICE BUILDUP, AS REFERENCED IN THE TOYOTA OWNER'S MANUAL, PAGE 252. I RECOMMEND THE SENSOR BE RELOCATED IN FRONT OF THE REAR VIEW MIRROR HIGH ON THE WINDSHIELD, WHERE WINDSHIELD DEFROST AND THE ANGLE OF THE GLASS WILL REDUCE OR ELIMINATE THE BUILDUP. IN THE SHORT TERM, PERHAPS A PLASTIC AIR DEFLECTOR OR SHIELD CAN BE FABRICATED WHICH WILL KEEP ICE FROM INTERFERING WITH THE SENSOR. FAILURE 2: HEADLIGHT HIGH BEAM FAILURE. THE DESIGN OF THE HEADLIGHT COVER FACILITATES ICE BUILDUP OVER THE ENTIRE STRUCTURE (SEE PHOTO 3). SINCE THE HIGH BEAM BULB IS INBOARD AND AFT OF THE LOW BEAM BULB, IT CANNOT PENETRATE THE ICE BUILDUP AT ALL, AND MAKES THE HIGH BEAMS COMPLETELY INEFFECTIVE. WEATHER CONDITIONS WERE: OUTSIDE AIR TEMP: 30 TO 32 DEGREES; NIGHT; HEAVY SNOW; ALTITUDE: 3,000 TO 6,563 FEET.
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.