NHTSA Complaint #10533607 — 2010 FORD EXPEDITION

WHEN ATTEMPTING TO PASS ANOTHER VEHICLE WITHOUT WARNING THE TRUCK WILL NOT ACCELERATE CAUSING A HAZARDOUS SITUATION. THE TRANSMISSION WILL ATTEMPT TO SHIFT INTO PASSING GEAR AND THE ENGINE WILL INCREASE IN RPM BUT THERE IS NO INCREASE IN SPEED. AFTER A FEW SECONDS THERE IS A MILD BANG AND SHUDDER WHEN YOU LET OFF THE FOOT PEDAL. THERE IS NO WAY TO ACCELERATE ENOUGH TO PASS THE VEHICLE YOU'RE ATTEMPTING TO PASS UNLESS THEY SLOW DOWN FOR YOU SO THE ONLY OPTION IS TO COAST AND RESUME YOUR POSITION BEHIND THE VEHICLE YOU WERE ATTEMPTING TO PASS. THIS HAS NOW HAPPENED AT LEAST 3 TIMES THAT I REMEMBER. UNFORTUNATELY IT ONLY NEEDS TO HAPPEN ONCE IN THE WRONG SITUATION TO HAVE POTENTIALLY DEADLY CONSEQUENCES. I HAVE RETURNED THE VEHICLE TO THE DEALERSHIP AND HAVE BEEN ADVISED THE TRANSMISSION SOFTWARE NEEDS TO BE UPDATED. I'VE DONE THIS TWICE AND NOW IT APPEARS TO BE NEEDED AGAIN AFTER ONLY 3 OR 4 MONTHS. IN ADDITION, WHILE IT IS NOT A SAFETY ISSUE, THE LOW SPEED OPERATION OF THE TRANSMISSION IS ERRATIC. THE SOFTWARE UPDATES SEEM TO ADDRESS THIS ISSUE BUT ONLY FOR A SHORT TIME. I CAN LIVE WITH THE LOW SPEED ISSUE, THE LACK OF PASSING ABILITY IS A HUGE SAFETY ISSUE TO ME AT LEAST. *TR