2004 Toyota Sienna electronic stability control (esc) problems

“Toyota VSC and ABS engaging and activating for no reason on dry pavement causing loss of proper control of the vehicle. The have been multiple occurrences on dry pavement between 30 and 65 mikes per hour. The car pulls to one side as the computer takes control of the car end engages the brakes suddenly for no reason. VSC Skid light goes on on the dash and there is a beeping sound while this happens. Very dangerous. Toyota USA notified and assigned case number 220201001364. They refuse to take any responsibility for this dangerous failure.”

“IN MOTION, ON DRY, OFF-CAMBER HIGHWAY CURVES, WITH SLIGHT ACCELERATION, THE ABS/VSC /TRAK ENGAGES, BRIEFLY JERKING THE STEERING TO ONE SIDE. DASH WARNINGS: "VSC" "TRAK OFF" + "CHECK ENGINE". REDUCING MECHANICAL "SLOP" (WHEEL BEARINGS, STEERING RACK & PINION, ETC.) TENDS TO REDUCE FREQUENCY OF OCCURRENCE. TOYOTA DEALER DIAGNOSIS: "STEERING CONTROL SYSTEM FAULT". >"TOYOTA KNOWS ABOUT -- BUT, DOES NOT KNOW HOW TO FIX THIS PROBLEM."< DEALER-SUGGESTED WORKAROUND: "PULL FUZES TO DISABLE VSC AND ABS SYSTEMS..." DEALER REPAIR DOCUMENTS ARE WITH PREVIOUS OWNER...”

“THIS VEHICLE HAS A TRACTION CONTROL FEATURE WHICH HELPS KEEP IT FROM SKIDDING OUT OF CONTROL IN ICY, WET, OR OTHERWISE UNSTABLE CONDITIONS. IT CAN HELP AN OUT OF CONTROL VEHICLE GET BACK INTO CONTROL BY DOING A VARIETY OF THINGS, INCLUDING BRAKING. PREVIOUSLY THIS FEATURE HAD ONLY KICKED ON WHEN I WOULD SLIDE ON THE SNOW DURING A LOW SPEED TURN AND WOULD SLIDE IN THE SNOW (WHICH WAS GOOD). BUT OVER THE PAST FEW MONTHS, THERE HAVE BEEN TWO TIMES THAT THIS FEATURE HAS KICKED ON AT HIGH SPEEDS (ONCE AT 40MPH AND ONCE AT 65MPH) ON DRY ROADS, BOTH WHILE TURNING AROUND A CURVE. SUDDENLY THE BRAKING SYSTEM IS APPLIED WITHOUT ANY WARNING AND THE VEHICLE SWERVES SLIGHTLY AND DOES WHAT IT WANTS FOR A FEW SECONDS. THEN IT STOPS. IF THIS WERE TO HAPPEN ON AN ICY ROAD AT THOSE SPEEDS, THE VEHICLE COULD CERTAINLY SPIN OUT OF CONTROL. THE VEHICLE COULD ALSO SWERVE INTO AN ONCOMING LANE OF TRAFFIC. I HAVE SEEN MANY FORUMS ONLINE WHERE OTHER SIENNA OWNERS ARE HAVING THE SAME ISSUE AND TOYOTA DEALERS SAY THEY CAN'T REPLICATE OR FIX THE ISSUE. THIS IS CERTAINLY A SAFETY ISSUE THAT NEEDS TO BE LOOKED INTO BY TOYOTA TO SEE WHAT IS CAUSING THIS ISSUE. THANK YOU! *TR”

“WHILE DRIVING AT OR BELOW THE SPEED LIMIT, UNDER DRY CONDITIONS, ON CURVY ROADS, THE VSC DASH LIGHT COMES ON AND ENGAGES WITH BEEPING AND AUTOMATIC BRAKING. THE RAPID DECELERATION AND SKIDDING, AS THE TIRES LOCK-UP, MAKES CONTROL OF THE VEHICLE DIFFICULT AND CARS FOLLOWING MUST PANIC BRAKE TO AVOID REAR-ENDING MY VEHICLE. INCREASING OCCURRENCES OVER THE PAST YEAR.”

“WHEN DRIVING UNDER NORMAL CONDITIONS THE VEHICLES' VSC WILL ENGAGE. THE DASHBOARD LIGHTS GO OFF, THERE IS A LOUD INTERIOR BEEPING SOUND, THE ABS ENGAGES, THE CAR SLOWS DOWN DRASTICALLY AT ONCE. THE ROADS ARE DRY. AT FIRST THIS HAPPENED WHILE DRIVING NORMAL SPEED EXITING OR ENTERING AN HWY OFF/ON RAMP. THEN HAPPENED YESTERDAY AS I WAS DRIVING ON NEIGHBORHOOD STREETS AT ABOUT 25-30 MPH. I COULD HEAR A RUBBING ON THE BACK TIRES AS IF THE BRAKES WERE ON.”

“WHEN DRIVING IN DRY CONDITIONS AT VARIOUS SPEEDS OVER 25 MPH, THE VSC WARNING LIGHT COMES ON, AN ALARM SOUNDS AND THE ANTILOCK BRAKES ENGAGE FOR NO REASON. THIS IS A TERRIFYING AND EXTREMELY DANGEROUS ISSUE THAT IS WELL DOCUMENTED BY SO MANY TOYOTA SIENNA OWNERS BUT TO DATE HAS NOT BEEN ADDRESSED OR ACKNOWLEDGED BY TOYOTA. WHEN TAKEN TO A DEALERSHIP, THEY CLAIM (AS OTHER OWNERS HAVE ALSO STATED) THAT THEY CANNOT REPLICATE THE PROBLEM AND IT DOES NOT REGISTER THROUGH THE OBD2 SENSOR SO THERE IS NO RECORD OF IT HAPPENING. WITH AS MANY PEOPLE AS THIS IS HAPPENING WITH, IT IS NOT A QUESTION OF WHETHER THERE WILL BE ACCIDENTS, INJURIES AND ULTIMATELY DEATHS CAUSED BY THIS ISSUE. THE ONLY QUESTION IS WHEN AND HOW MANY HAVE TO OCCUR BEFORE TOYOTA ACKNOWLEDGES THIS IS A PROBLEM. DRIVING DOWN THE ROAD, IN TRAFFIC AT 65 MILES AN HOUR WHEN FOR NO REASON, THE CAR SLAMS ON THE BRAKES WITHOUT WARNING. IT IS HAPPENING ALL THE TIME AT THIS POINT MAKING THE CAR COMPLETELY UNSAFE TO DRIVE FOR THE OWNER, THE VEHICLE'S OCCUPANTS AND ANY UNSUSPECTING VEHICLE IN THE VICINITY. I AM BEGGING YOU. PLEASE GET TOYOTA TO ISSUE A RECALL BEFORE TRAGEDY STRIKES. THANK YOU FOR YOUR PROMPT…”