2005 Toyota Sequoia vehicle speed control problems

“After several years of fighting problems with, after braking to a brief stop, the loss of power/abs grinding when accelerating and turning right, now the ABS is completely dysfunctional. Both TRC lights will turn on and usually the parking brake, and when braking at speeds less than 10mph the abs will activate and prevent bring the truck to a stop without pumping them, on dry pavement. When the ABS light turns on, then braking is possible, but all pressure is gone from brake booster and brakes sound like they're grinding, not like the sound of abs engaging. Very dangerous to drive in snow as front brakes work but drive axle doesn't disengage when the brake pedal is depressed. Regular mechanic won't engage with diagnosing issues as he feels the problem is partly computer malfunction and Toyota won't allow for used part mismatching. ABS/ECU is failed.”

“Malfunction indicator lights - Check engine, VSC off and TRAC off. The vehicle goes into limp mode. The issue is both a mechanical and engineering defect causing the override of the entire AIP system. Parts affected are Air injection pumps, Air switching valves, Air pump inlets/covers, Gaskets/connectors/clamps and Speed sensors.”

“TL* THE CONTACT OWNS A 2005 TOYOTA SEQUOIA. WHILE DRIVING VARIOUS SPEEDS, THE VEHICLE INDEPENDENTLY ACCELERATED WITHOUT WARNING. THE VEHICLE WAS TAKEN TO AN UNKNOWN DEALER WHERE IT WAS DIAGNOSED, BUT THE CAUSE OF THE FAILURE WAS UNDETERMINED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE, BUT DID NOT OFFER ANY ASSISTANCE. THE VIN AND FAILURE MILEAGE WERE UNKNOWN.”

“MY VEHICLE WILL SUDDENLY ACCELERATE FOR NO REASON. THIS SUDDEN "UNINTENDED ACCELERATION OF POWER" COMES ON WITH NO NOTICE. I HAVE ALMOST HIT A PERSON AND HAVE BEEN IN ONE CAR ACCIDENT AS A RESULT. THIS UNINTENDED ACCELERATION PROBLEM HAS OCCURRED ABOUT 10 TO 12 TIMES. THE UNINTENDED ACCELERATION HAS OCCURRED BOTH IN STATIONARY & IN MOTION; AND BOTH ON A CITY STREET AND HIGHWAY. TURNING HAS NOT BEEN AFFECTED BY UNINTENDED ACCELERATION. TOYOTA HAS TESTED AND PROVIDED THE ATTACHED REPORT TO ME BUT WITHOUT ANY INTERPRETATION. MY VEHICLE REPAIR COST BECAUSE OF THE UNINTENDED ACCELERATION WAS $4,529.24. TOYOTA STILL HAS NOT RESPONDED TO THIS DANGEROUS AND LIFE THREATENING SITUATION. THE MANUFACTURER COULD NOT DUPLICATE THE FAILURE. UPDATED 10/04/2017*JS”

“I EXPERIENCED A PROBLEM WITH ENGINE WARNING AND VSC TRAC OFF LIGHTS GOING ON. THE CHECK ENGINE LIGHT ALSO CAME ON. MY FAMILY AND I WERE ON A TRIP AND OUR SEQUOIA ALL OF A SUDDEN LOST POWER. IT SLOWED DOWN DRAMATICALLY EVEN THOUGH THE ENGINE WAS FINE. IT WAS A VERY DANGEROUS SITUATION BECAUSE WE WERE ON AN INTERSTATE WHERE THE SPEED IS 70 MPH. I ALSO EXPERIENCED ALL THE BRAKES MAKING A MASSIVE GRINDING NOISE WHILE GOING SLOW INTO A RESTAURANT. (THE BRAKES HAVE LESS THAN 3000 MILES ON THEM.) THE PARKING BRAKE LIGHT ALSO COMES ON PERIODICALLY.”

“I HAVE VSC TRAC, VSC OFF, AND CHECK ENGINE. IF YOU GIVE IT A LOT OF FUEL, IT JUST SOUNDS LIKE IT WANTS TO GO, BUT IT DOESN'T TRANSLATE INTO POWER IN THE REAR END. I USE MY CODE READER AND IT SHOWED CODES P1441 AND P1444. SAYS I MAY HAVE: A) FAULTY VACUUM SWITCHING VALVE (VSV) FOR AIR INJECTION CONTROL CIRCUIT, B)FAULTY AIR SWITCHING VALVE NUMBER 2, OR C)FAULTY VSV FOR AIR INJECTION SYSTEM. THIS IS THE SECOND TIME THIS HAPPENED TO MY SEQUOIA, AND THIS SEEMS TO BE A RECURRING ISSUES FOR TOYOTA SEQUOIA OWNERS AND IN FACT IT IS A RECURRING ISSUES FOR OTHER MODELS AS WELL. THIS COST ME APPROXIMATELY $2200 LAST TIME AND NOW 2 YEARS LATER IT IS BACK FOR ANOTHER $2200 TO REPAIR. IT'S ALL THE OVER THE INTERNET ABOUT THIS VSC TRAC, VSC OFF, AND CHECK ENGINE, IT NEEDS TO BE RECALLED!”