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2021 Toyota 4RUNNER Forward Collision Avoidance Warnings Problems, Complaints and Defects

Issue ID	1720394
Internal NHTSA #	11390053
Manufacurer	Toyota Motor Corporation
Brand	TOYOTA
Model	4RUNNER
Model Year	2021
File date	25/01/21
Component	FORWARD COLLISION AVOIDANCE: WARNINGS
Product type code	VEHICLE
Description of the problem	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.
Vehicle Mileage at Failure	637
Number of Occurences
Source of the issue	NHTSA WEB SITE
City and State	CEDAR CITY, UT
VIN pattern	JTEHU5JR9M5XXXXXX
Was vehicle invloved in a crash?	N
Was vehicle involved in a fire?	N
Was incedent reported to police?	N
Was medical attention required?	N
Was part original equipment?
No. of injured persons
No. of fatalities
Date of purchase	22/01/25
Was original owner?	N
Anti-lock brakes	N
Cruise control	N
Number of cylinders
Drive train type
Transmission type
Vehicle speed	60
DoT tire identifier
Tire size
Location of tire code
Type of tire failure code
Was defective tire repaired?
Date of manufacture
Type of child seat code
Type of restraint
Dealer's name
Dealer's telephone number
Dealer's city
Dealer's state code
Dealer's ZIP code

What is Recall?
A recall is when a product is removed from the market or a correction is made to the product because it is either defective or potentially harmful.
What is Failure?
Failure is the state or condition of not meeting a desirable or intended objective, and may be viewed as the opposite of success. Product failure ranges from failure to sell the product to fracture of the product, in the worst cases leading to personal injury, the province of forensic engineering.
What is Defect?
Non-conformance of a car component with the specified requirements, or non-fulfillment of user expectations, including the safety aspects.

Last decoded VIN:

KMHDH41F1EU990348 VF30U9HR8BS008822 5XYZT3LB8FG246181 LS4ASJ2E4NA981692 JDAJ200G001010176 1GT120CG7BF165549 WF0DP3TH1H4121301 1GC1KVEGXFF105023 WBAPK5G52BNN27984 WBAFP31030C502048 1N6BA07A65N576123 1G1FK1R62J0188421

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2021 Toyota 4RUNNER Forward Collision Avoidance Warnings Problems, Complaints and Defects, Recalls and Failures

2021 Toyota 4RUNNER Forward Collision Avoidance Warnings Problems, Complaints and Defects

What is Recall?

What is Failure?

What is Defect?