2008 Toyota Sienna vehicle speed control problems

“I have had the traction control go on while driving on the highway even when I turn it off. Sometimes the VSC and TRAC OFF lights go on while driving. The roads are dry. Whenever I take it in to the mechanic, all the lights are off. They pulled a zero calibration code and recalibrated. It still kept happening. Then I was driving around a curve on highway speeds when the traction control light went on and the van suddenly braked on its own and I almost lost control. The tires are new and the roads were dry.”

“Anti skid/slip malfunctions, Brakes are automatic applied while turning a corner. When this happen one dry road surfaces it was harder to control the car. This happen multiple times in the pass. Yes my safety and others on the road was put at risk. Yes been confirmed by independent service centers. 4.) UNKNOWN 5).No. The warning indicator light and buzzer comes on at the time the incident happens.”

“2008 Toyota Sienna. Driving down steep right turns, VSC light comes on, urgent beeping alarm and tires grip and grip vehicle brakes going 20-30+ mph on dry road. Very scary and dangerous, and has continues repeatedly over the past year on curvy right turns. Local mechanics don't know what is wrong with the vehicle. Many Sienna owners have similar problems listed on Carguru. https://www.cargurus.com/Cars/Discussion-c9152_ds656326 Please insist on a manufacturing recall for this vehicle. It is unsafe and could easily cause an accident. Thank you. Concerned original car owner.”

“BRAKES HAVE BEEN REPLACED, AND CHECKED SEVERAL TIMES MAKE A LOUD GRINDING NOISE IN WET WEATHER WHEN BACKING UP AND SOMETIMES WHEN APPLYING PRESSURE WHILE DRIVING ALSO A 🔊 NOISE AND BRAKES SEEM TO SLIP HAVE HAD TO PULL OVER BECAUSE IT SCARES ME CAN NOT FIND ANYTHING WRONG BUT CONTINUES TO PERSIST. BOTH IN HIGHWAY DRIVING AND REGULAR STREET DRIVING”

“CAR SPEED VARIES WHEN DOING A MODERATE SPEED EXAMPLE 40 MPH SOMETIMES FEELS LIKE ITS ENGINE SLIPS AND SPEED SLOWS CAR JUMPS FORWARD FEELS LIKE ENGINE SLIPS OR GEAR SHIFTS. ENGINE BOGS DOWN OR SOMETIMES REVS UP A LITTLE..SCARES ME SOMETIMES BUT NO CHOICE BUT TO DRIVE”

“WHILE ON AN ON-RAMP; THE VEHICLE AT ABOUT 35 MPH STARTED BLINKING THE SLIP LIGHT AND SLOWED THE VAN DOWN, ALSO CAUSING I THINK THE BRAKES TO ENGAGE WITH FORCE. HAPPENS WHILE DRIVING NORMALLY AND ON RAMPS. I HAD THE RACK AND PINION REPLACED AND STILL HAS DONE THIS.”