NHTSA Complaint #10308960 — 2007 TOYOTA HIGHLANDER HYBRID

I HAVE A 2007 TOYOTA HIGHLANDER HYBRID. WHEN BRAKING OVER BUMPY ROADS OR POTHOLES (EVEN SMALL BUMPS), THE SENSATION I GET IS THAT THE BRAKES ARE NO LONGER ENGAGED. THE CAR FEELS TEMPORARILY OUT OF CONTROL. THIS SENSATION IS STRONGER IF THE BUMPS ARE ENCOUNTERED DURING A TURN OR IF THERE ARE MULTIPLE BUMPS ABOUT A FOOT OR TWO APART (AS OFTEN LEFT BY BUSES REPEATEDLY STOPPING IN THE SAME AREAS ON CITY STREETS). ON FAMILIAR ROADS, I KNOW WHERE THE BUMPS ARE AND CAN DRIVE/BRAKE ACCORDINGLY. UNFAMILIAR ROADS MAKE THIS PROBLEM LESS PREDICTABLE AND MORE DANGEROUS. THIS PROBLEMS SOUNDS VERY SIMILAR TO THE PROBLEMS WITH TOYOTA PRIUS' BRAKING. MY VEHICLE IS NOT CURRENTLY PART OF THE RECALL AND I WONDER IF TOYOTA IS BEING EVASIVE ABOUT HOW EXTENSIVE THE PROBLEM TRULY IS. TEMPORARY LOSS OF BRAKING OVER BUMPY ROADS HAS EXISTED SINCE I TOOK POSSESSION OF MY NEW HIGHLANDER IN JUNE 2007. I CAN PREDICT OCCURRENCE WITH NEAR 100% ACCURACY ON CERTAIN FAMILIARLY BUMPY ROADS. I SEE ON THIS FORM THAT I MUST PICK A DATE FOR "THE" INCIDENT (THERE HAVE BEEN MANY). I'LL PICK A DATE OF RECENT PARTICULARLY MEMORABLE/SCARY OCCURRENCE. NOTE: THIS ONLINE REPORTING SYSTEM REQUIRES ME TO CHOOSE "ELECTRIC BRAKES" OR "HYDRAULIC BRAKES." I DON'T KNOW WHICH TO CHOOSE: I THINK IT IS A HYBRID OF BOTH, SO NEITHER CHOICE IS ACCURATE. NHTSA: YOU CAN DO BETTER! *TR