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2017 Toyota PRIUS Vehicle Speed Control Problems, Complaints and Defects

Issue ID	1506988
Internal NHTSA #	11141907
Manufacurer	Toyota Motor Corporation
Brand	TOYOTA
Model	PRIUS
Model Year	2017
File date	08/07/11
Component	VEHICLE SPEED CONTROL
Product type code	VEHICLE
Description of the problem	The adaptive cruise control in this vehicle has several operational issues (programming bugs or defects) which are potentially extremely hazardous. Perhaps the most potentially dangerous behavior of the system is as follows: - when using adaptive cruise control, the system automatically accelerates and applies braking force to stay a set distance (one of three distances) from the nearest preceding vehicle. - when the nearest preceding vehicle changes lanes, the system can become confused, display "no preceding vehicle" and disengage. - this behavior can be dangerous or life-threatening in some cases, which i've experienced several times: what happened: - highway driving at 65mph, using adaptive cruise control and following another vehicle. - we approach an area of congestion or stopped vehicles (a traffic jam). - the preceding vehicle begins quick deceleration in order to avoid rear-ending the vehicle in front of it. - my adaptive cruise control also applies strong braking to maintain its programmed distance - the preceding vehicle changes lanes out of my lane - my adaptive cruise control displays "no preceding vehicle" and disengages, which means that it stops braking - my car is now flying into the vehicle in front of me, giving me only a moment to react and apply braking. Instead of disengaging during braking, the adaptive cruise control should continue braking down to a speed of 25mph, which is the maximum speed that toyota's safety stop operates at to bring a car to a complete stop. The current behavior of the system has led to several near accidents in my highway driving, and is undoubtedly a danger to anyone else who uses a toyota adaptive cruise control of this model on the highway. I reported this issue to toyota last year and they seem uninterested in fixing it, refusing even to convey my report to their developers in japan.
Vehicle Mileage at Failure	500
Number of Occurences
Source of the issue	NHTSA WEB SITE
City and State	SAN FRANCISCO, CA
VIN pattern	JTDKARFP0H3XXXXXX
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	30/06/24
Was original owner?	N
Anti-lock brakes	N
Cruise control	N
Number of cylinders
Drive train type
Transmission type
Vehicle speed	65
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:

KNAGW411BHA476510 NVDHY46YX33810268 1C6SRFFTXMN508415 SALLTAM23XA222375 2C4RC1BG4ER338741 WAUAFCFCXFN010114 SALYA2BX4KA201184 NP9LW4291RP025005 1GKS28KJ2KR150959 ZFA18700001324385 1FBNE3BL2CDA38010 SUPTF69YD6W278523

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2017 Toyota PRIUS Vehicle Speed Control Problems, Complaints and Defects, Recalls and Failures

2017 Toyota PRIUS Vehicle Speed Control Problems, Complaints and Defects

What is Recall?

What is Failure?

What is Defect?