NHTSA Complaint #10553584 — 2013 HONDA PILOT

WE HAVE HAD THIS PROBLEM SINCE DAY ONE (JANUARY 18, 2013) WITH OUR 2013 HONDA PILOT EX 4WD. THE PROBLEM IS A NOTICEABLE VIBRATION WHEN THE ENGINE DROPS DOWN FROM HIGH ECO MODE (4 CYLINDERS) TO LOW ECO MODE (3 CYLINDERS - IF I UNDERSTAND THE ECO CYLINDER REDUCTION SYSTEM CORRECTLY). IT IS SMOOTH IN HIGH ECO MODE BUT AS SOON AS IT DROPS DOWN, THE VEHICLE VIBRATES/RUMBLES SIGNIFICANTLY. IT IS MY WIFE'S PRIMARY VEHICLE AND I DO NOT LIKE TO DRIVE IT FOR THAT REASON. I DO NOT HAVE AN INDEPENDENT AUDIBLE VIBRATION ALTHOUGH WHEN IN LOW ECO MODE IT MAKES A SOUND AS WELL AS A VIBRATION WITH THE VIBRATION BEING THE MOST PRONOUNCED. IT IS ODD THAT ONE PART OF THE ECO MODE IS SMOOTH AND THE OTHER PART IS ROUGH. I CAN PREDICT WHEN THE ROUGHNESS WILL OCCUR WHEN TRAVELING ON A RELATIVELY FLAT ROAD WITH GRADUAL INCLINES AND DECLINES. WHEN THE ROAD DECLINES, THE LOW ECO MODE ENGAGES AND THE VIBRATION INITIATES AND CONTINUES UNTIL THE ROAD BEGINS TO INCLINE AT WHICH TIME THE ECO MODE TRANSFERS FROM ITS LOW MODE TO ITS HIGH MODE AND THE VIBRATION STOPS IMMEDIATELY. THE VIBRATION IS SIGNIFICANT ENOUGH AND IS COMPARABLE TO RIDING ON SMOOTH ASPHALT AND THEN THE SURFACE CHANGING ABRUPTLY TO A ROUGH OIL AND CHIP ROAD SURFACE. WE HAD A 2009 HONDA PILOT LX 4WD WITH THE SAME ECO SYSTEM AND THERE WAS NO VIBRATION IN LOW ECO MODE. HAS ANYONE HAD A SUCCESSFUL FIX/REPAIR OF THIS ISSUE? IT IS VERY ANNOYING TO ME AND THIS CANNOT BE NORMAL BY ANY STRETCH OF THE IMAGINATION. IF NOTHING CAN FIX THIS PROBLEM, IS THERE A METHOD TO SHUT OFF THE LOW ECO SYSTEM FROM ACTIVATING BUT STILL HAVE THE HIGH ECO SYSTEM OPERABLE. I WOULD RATHER HAVE A SMOOTH RIDE AND SACRIFICE SOME GAS MILEAGE THAN BE TORMENTED BY THIS VIBRATION. THE VIBRATION IS SO OBVIOUS THAT IT CANNOT BE IGNORED ESPECIALLY IF YOU ARE DRIVING IT. IT VIBRATES IN THE STEERING WHEEL AS WELL AS THE VEHICLE IN GENERAL. THANK YOU. *TR