WHILE THE BRAKE IS HELD DOWN WITH THE LEFT FOOT AND A SLIGHT PRESSURE IS PUT ON THE GAS PEDAL THE CAR WILL SUDDENLY SURGE FORWARD. IT CAN MOVE ABOUT TWO FEET BEFORE I GET THE BRAKE ON HARD ENOUGH TO STOP THE CAR. IT FEELS AS IF THE VEHICLE WAS STRUCK HARD FROM BEHIND. THE DEALER HAS LOOKED AT IT TWICE AND SUGGESTED THAT THE BOG FOR "BREAK OVER GAS" LOGIC SYSTEM IS BEING FOOLED BY THE COMBINED PRESSURE ON THE BRAKE AND GAS AT THE SAME TIME, I.E., IF, WHILE BOTH PEDALS ARE PRESSED, IF THE BRAKE PRESSURE IS SLIGHTLY RELEASED WHILE THE GAS PEDAL IS STILL SLIGHTLY DEPRESSED THE COMPUTER THINKS THE IT HAS TO "CATCH-UP WITH THE GAS PEDAL AND IT SURGES FORWARD. IT HAS HAPPENED FIVE TIMES. IT HAS NEVER HAPPENED WITHOUT BOTH THE BRAKE AND GAS BEING SIMULTANEOUSLY APPLIED. IT BECOMES A SAFETY ISSUE WHEN IT HAPPENS AT A BUSY STOP SIGNED INTERSECTION WHILE WAITING TO MAKE A LEFT TURN ACROSS ONCOMING TRAFFIC, I.E., A PEDESTRIAN COULD BE STRUCK. I TRY TO AVOID THIS USING THIS TECHNIQUE BUT IT IS A HABIT THAT I'M SURE MANY DRIVERS HAVE. *TR
2013
ENGINE
WHILE DRIVING ON THE HIGHWAY, THE VEHICLE VERY SUDDENLY DECELERATED (FROM ABOUT 55 TO 40), ALMOST AS IF IT SLIPPED BACK A COUPLE OF GEARS- IT WAS A JARRING AND IMMEDIATE LOSS OF POWER, AND I COULD HEAR THE ENGINE STRAIN AS IF IT WAS FORCED INTO A LOWER GEAR. THE TRACTION CONTROL SYSTEM AND TIRE PRESSURE MONITORING DASHBOARD LIGHTS CAME ON, AND THE CHECK ENGINE LIGHT BEGAN FLASHING. I LOST ABILITY TO ACCELERATE ABOVE MAYBE 1K OR 1.5K RPMS. WHEN I SLOWED THE CAR DOWN AND DROVE TO A PLACE I COULD SAFELY PULL OVER, THE CAR WAS SPUTTERING AND TREMBLING AGGRESSIVELY WITH EACH PUSH OF THE GAS PEDAL. WHEN I FINALLY DID STOP, I POWERED OFF THE VEHICLE AND CHECKED THE TIRES - ALL OF WHICH WERE FINE. I TURNED THE CAR BACK ON AND IT BEHAVED NORMALLY, ALL THE ERROR LIGHTS WERE CLEARED. I EVEN DROVE IT QUITE SOME DISTANCE TO THE DEALER FOR MAINTENANCE. THE SERVICE CENTER SAID THEY HAVE NEVER HEARD OF THIS TYPE OF INCIDENT. A QUICK WEB SEARCH, HOWEVER, INDICATES THAT OTHERS HAVE EXPERIENCED THIS VERY SAME ISSUE. THIS IS A NEW (6 MONTHS) 2013 MAZDA CX-5 WITH AROUND 6000 MILES. *TR
