NHTSA Complaint #10654312 — 2015 MAZDA CX-5

VEHICLE SPEED CONTROL issue reported to NHTSA

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Complaint Details

ODI Number	10654312
Vehicle	2015 MAZDA CX-5
Component	VEHICLE SPEED CONTROL
Date of Incident	November 12, 2014
Date Filed	November 12, 2014
Mileage	10,000 miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	IN

Consumer Description

OUR VEHICLE IS EQUIPPED WITH THE "SMART CITY BRAKING" FEATURE THAT AUTOMATICALLY PREVENTS COLLISIONS AT LOW SPEED. THIS SYSTEM TRIGGERS THE BRAKES AND BRINGS THE VEHICLE TO A STOP WHEN AN OBJECT IS DETECTED IN FRONT OF THE VEHICLE. THIS SYSTEM HAS BEEN TRIGGERED BY STEAM CLOUDS COMING OUT OF SEWER GRATES AND HAS BROUGHT THE CAR TO A COMPLETE AND VERY UNEXPECTED STOP SEVERAL TIMES. NO REAL "OBJECT" WAS BEHIND THE STEAM CLOUD / YET BECAUSE OF THE WAY THE SYSTEM IS IMPLEMENTED IT DETECTED AN OBJECT AND ACTIVATED THE BRAKES. THIS UNEXPECTED BRAKING CAN QUICKLY BRING THE CAR TO A COMPLETE STOP AND COULD RESULT IN SERIOUS PROPERTY DAMAGE OR INJURY. WE PASS BY AN AREA WITH MULTIPLE SEWAGE GRATES RELEASING STEAM AND THIS SYSTEM IS BECOMING A SAFETY HAZARD. WE HAVE BEEN LUCKY ENOUGH NOT TO HAVE SOMEONE BEHIND US WHEN THE SYSTEM IS TRIGGERED - BUT IT IS ONLY A MATTER OF TIME BEFORE THE BRAKING TRIGGERS IN HEAVY TRAFFIC. *TR

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