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Toyota Sienna Vehicle Speed Control Safety Report | Dec 01, 2010
Reported on Dec 01, 2010
| PROBLEMS : LOST ACCELERATION WHEN THE CAR WAS FREE RUNNING (NO GAS PEDAL APPLIED) DOWN HILL OR DECLINED ROADS AT ABOUT 8-10 MPH, WHILE THE ENGINE SPEED WAS 1100RPM OR ABOVE ( THIS MOSTLY HAPPENED IN WINTER WHILE THE ENGINE WAS COLD OR NOT WARM UP, BUT IT HAPPENED IN HOT ENGINE TOO), IF I STEPPED ON THE GAS PEDAL TO ACCELERATE THE CAR AT THIS TIME, THE CAR WOULD NOT PICK-UP SPEED AND ACCELERATE; IT ACTED LIKE THE CAR WAS BEING DRIVEN IN NEUTRAL; THE GAS PEDAL FELT LIGHTER THAN NORMAL; EVEN IF THE ENGINE WAS RUNNING UP FROM 1000RPM TO 1800RPM, I STILL COULDN'T FEEL THE ACCELERATING; IT ACTED LIKE CONTINUING ITS FREE RUNNING. ONLY WHEN THE ENGINE RAN UP TO1800-2000RPM THEN THE CAR STARTED PICK-UP SOME ACCELERATION. IN OTHER WORDS, THREE CONDITIONS MUST HAPPEN AT THE SAME TIME TO SEE THIS PROBLEM: 1)FREE RUNNING (NO GAS PEDAL APPLIED) DOWN HILL OR DECLINED ROADS, 2)FREE RUNNING AT ABOUT 8-10 MPH, 3)ENGINE SPEED IS AT 1100RPM OR ABOVE THEN STEP ON GAS PEDAL TO ACCELERATE. THIS PROBLEM WOULD NOT HAPPEN ON UP-HILL ROAD, OR ACCELERATE SLOWLY FROM SPEED BELOW 10 MPH. I TOOK IT TO THE TOYOTA DEALER FOR INSPECTION TODAY. THE MECHANIC WAS ABLE TO REPRODUCE THIS PROBLEM ON A ROAD TEST WITH ME ON THE CAR. HE TESTED OTHER SIENNA LATER, WHILE I WAS WAITING. HE SAID ALL THE SIENNA ACTED LIKE THIS WAY. HE RESET THE COMPUTER FOR TRANSMISSION TO LEARN MY DRIVING HABIT, HOPING IT WILL FIX THE PROBLEM. I BELIEVE THIS IS A DESIGN IN COMPUTER PROGRAMMING PROBLEM. RESETTING COMPUTER WOULD NOT FIX THE PROBLEM. THAT UNABLE TO ACCELERATE MY CAR WHEN I NEED TO IS A DANGEROUS, FOR I MIGHT NOT BE ABLE TO AVOID SOME DANGEROUS SITUATIONS ON THE ROAD. *TR | |
| Make: | Toyota |
| Model: | Sienna |
| Manufactured by: | TOYOTA MOTOR CORPORATION |
| Year: | 2011 |
| Was a crash reported? | N |
| Was an injury reported? | |
| Was a death reported? | |
| Was a fire reported? | N |
| Location: | LITTLE NECK NY |
| Vehicle Identification Number (VIN): | 5TDZK3DC0BS |
| Mileage: | |
| Speed: | |
| Number of cylinders: | 6 |
| Vehicle type: | |
| Vehicle fuel: | GAS |
| Was a police report filed? | N |
| Tire size: | |
| Dealer name and location: | |
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