2006 Toyota Sienna Brakes Problems

Vehicle Trac Control/ABS system engages periodically especially on winding roads between speeds of 30-60mph. Trac Control alarm goes off and vehicle pumps brakes automatically, then resolves. This is extremely dangerous especially when roads are wet/icy or when being followed too closely by another vehicle. Tried replacing front right wheel speed sensor but problem persists. Research shows this is a chronic problem with Sienna vans and needs to be repaired or guidance provided by Toyota on how to resolve before someone gets hurt. Please help!

The contact owns a 2006 Toyota Sienna. The contact stated that she heard a strange noise while decelerating and the brake pedal failed to engage. There were no warning lights. The contact continued to depress the brake pedal with force until the antilock braking system engaged but failed. The vehicle was towed to an independent mechanic where the brake pump was replaced but the failure recurred. The contact then had the brake pump replaced for a second time, but the failure recurred. The vehicle was towed to another independent mechanic where it was diagnosed that the ABS needed to be replaced and the contact was advised to take the vehicle to a dealer. The dealer was notified of the failure and informed the contact to take the vehicle back to the independent mechanic. The manufacturer was not notified of the failure. The failure mileage was approximately 90,000.

WITH NO WARNING ABS WILL LOCK UP AND CAUSE VAN TO VIOLENTLY SWERVE TO THE RIGHT WHILE DRIVING. SOMETIMES ONCE , OTHER TIMES SEVERAL TIMES IN A ROW. ONLY LASTS FOR A FEW SECONDS. BUT LONG ENOUGH TO CAUSE AN ACCIDENT. TERRIFYING TO LOOSE COMPLETE CONTROL OF YOUR VEHICLE UNTIL IT DECIDES TO GIVE YOU CONTROL AGAIN. SEVERAL TRIPS TO DIFFERENT TOYOTA DEALERS AS WELL NO LESS THAN 5 DIFFERENT MECHANICS AND NO ONE HAS ANY IDEA WHAT CAUSES IT. HOWEVER THE TOYOTA DEALERS WERE ALL VERY FAMILIAR WITH THE ISSUE BUT HAD NO IDEA HOW TO FIX IT. THIS HAS BEEN GOING ON FOR 18 MONTHS. THE INTERNET IS FULL OF PEOPLE TRYING TO SOLVE THE SAME ISSUE IN 2004-2010 TOYOTA'S IN ALL MODELS. PLEASE HELP!

I've had multiple instances of driving along at varying speeds ranging from 35 to 65 mph, where the traction control kicked in abruptly, the slip indicator lights come on along with the traction control light on the dashboard, a beeping sound occurs, and the van brakes suddenly on its own. This has happened on dry pavement without any reason for traction control to kick in whether I'm driving straight or going around a curve. It is very dangerous and I've stopped driving the vehicle since I often drive with my 3 young children and I fear for our safety.

TL* THE CONTACT OWNS A 2006 TOYOTA SIENNA. THE CONTACT STATED WHILE DRIVING APPROXIMATELY 35 MPH, THE VEHICLE STALLED, CAUSING THE CONTACT TO LOSE CONTROL FOR A SHORT WHILE. THE CONTACT STATED THAT THE TRACTION CONTROL WARNING LIGHT WAS ILLUMINATED. THE VEHICLE WAS DRIVEN TO HIS DESTINATION. THE CONTACT ATTEMPTED TO CALL BIG ISLAND TOYOTA KAILUA-KONA (74-5504 KAIWI ST, KAILUA-KONA, HI 96740; (808) 329-8517) WHERE A VOICEMAIL WAS LEFT. THE VEHICLE WAS NOT DIAGNOSED NOR REPAIRED. THE MANUFACTURER WAS INFORMED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 77,400.

Every time I go around a curve, the ABS TRC and vehicle beeps like I'm sliding. It happens on every curve. Its very dangerous. I have unplugged the sensor under the front passenger seat and all problems go away. i have replaced this part and it still has not fixed the problem. with part unplugged i have no ABS TRC Airbags none of the safety equipment is working while unplugged, but is safer than having my brakes slammed in every curve.

TRACTION CONTROL ACTIVATES ON DRY PAVEMENT AT RANDOM SPEEDS CAUSING VEHICLE ABS SYSTEM TO BRAKE AUTOMATICALLY. THIS HAPPENS ON GRADUAL CURVES TAKEN AT 30-45 MPH CAUSING THE VEHICLE TO PULL WHEN ABS ACTIVATED.

TL* THE CONTACT OWNS A 2006 TOYOTA SIENNA. WHILE DRIVING 40 MPH, THE TRACTION WARNING INDICATOR ILLUMINATED AND THE VEHICLE MADE A COMPLETE STOP. THE CONTACT WAS ABLE TO PARK ON THE SIDE OF THE ROAD. THE VEHICLE WAS TOWED TO AN INDEPENDENT MECHANIC WHO STATED THAT THE ABS MODULE NEEDED TO BE REPLACED. THE CONTACT CALLED LITHIA TOYOTA OF REDDING (LOCATED AT 250 E CYPRESS AVE, REDDING, CA 96002, (530) 605-2938) AND INFORMED THEM OF THE FAILURE. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED. THE FAILURE MILEAGE WAS 165,000.

TL* THE CONTACT OWNS A 2006 TOYOTA SIENNA. WHILE DRIVING 35 MPH, THE BRAKE ASSIST AND SLIP WARNING INDICATORS ILLUMINATED. AS A RESULT, THE VEHICLE SUDDENLY SLOWED DOWN. THE VEHICLE WAS TAKEN TO TOYOTA OF OLYMPIA (6969 TYEE DR SW, TUMWATER, WA 98512 (360), 539-3939) TO BE DIAGNOSED, BUT THE FAILURE COULD NOT BE REPLICATED. THE MANUFACTURER WAS CONTACTED AND PROVIDED CASE NUMBER: 1907270452. THE FAILURE MILEAGE WAS 150,669.

THE BRAKES SUDDENLY ACTIVATE WITH THE VSC TRAC LIGHTS AND ALARM GOING OFF, ON THE SLIGHTEST TURNS AND WHILE GOING DOWNHILL. I HATE HAVING MY WIFE AND KIDS DRIVE THIS VAN LIKE THIS.

ANTILOCK BRAKE SYSTEM (ABS) WARNING LIGHT AND PARKING BRAKE LIGHT ARE ON SIMULTANEOUSLY, AT ALL TIMES ONCE CAR IS STARTED. ISSUE WAS DIAGNOSED AS FAULTY ABS CONTROL MODULE REQUIRING REPLACEMENT. VEHICLE HAS NEVER BEEN IN AN ACCIDENT, AND TO THE BEST OF MY KNOWLEDGE, HAS NEVER EVEN REQUIRED THAT THE ABS BE UTILIZED.

THE VEHICLE WAS IN MOTION . DRIVING UP THE MOUNTAIN . WHEN THE TRACTION CONTROL SENSORS WENT ON AND BRAKED AND BEGAN MOVING THE STEERING WHEEL . ALARMS WHERE GOING OFF WHEN NO DANGER OCCURRED . THE NEXT TWO HOURS THE SENSORS WOULD ALARM. DID NOT MATTER HOW SLOW OR FAST WE DROVE IT WOULD BRAKE GOING UP AND DOWN THE HILL. TOOK CAR TO DEALERSHIP AND THEY STATED THAT IT WAS A YAW SENSOR MALFUNCTION PART NUMBER 89180-45010. $900+ CHARGE

TL* THE CONTACT OWNS A 2006 TOYOTA SIENNA. WHILE DRIVING BETWEEN 10-35 MPH, THE BRAKES ACTIVATED INDEPENDENTLY AND THE VEHICLE CONTROL SYSTEM ALARM SOUNDED. THE VEHICLE WAS TAKEN TO A LOCAL DEALER (TOYOTA OF HUNTINGTON BEACH LOCATED AT 18881 BEACH BLVD HUNTINGTON BEACH, CA 92648, 855-661-4272), BUT WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE AND OPENED CASE NUMBER: 1708143994. NO FURTHER ASSISTANCE WAS PROVIDED. THE FAILURE MILEAGE WAS 102,000.

WHEN I DRIVE HIGHWAYS THAT CURVE MY TRACTION CONTROL TURNS ON A NEARLY CAUSES ME TO WRECK! IT'S TERRIFYING AND IT'S ONLY A MATTER OF TIME UNTIL IT CAUSES AN ACCIDENT.

THE CAR WAS SENT TO THE DEALER FOR TIMING BELT KIT REPLACEMENT, UPON INSPECTION THE TECHNICIAN FOUND THE ANTI LOCK BRAKE SYSTEM IS MALFUNCTIONING DUE TO THE FACT THE ABOVE MENTIONED PART, PART # 44050-08030, THE ANTI LOCK BRAKES HYDRAULIC UNIT, IS DAMAGE OR INOPERABLE. THE TECHNICIAN TOLD ME THIS IS NOT THE FIRST TIME HE HAS ENCOUNTERED THIS SITUATION IN THE SAME MODEL/YEAR OF MY CAR, BUT BECAUSE TOYOTA HAS NOT PRONOUNCE ON THIS MATTER THERE IS LITTLE HE CAN DO ABOUT IT EXCEPT FOR REPLACE THE PART WHICH COST ABOUT $1,680.00, HE ADVISE ME TO INFORM THE PROPER AUTHORITIES FOR FURTHER INVESTIGATION ON WHY THE PART MALFUNCTION. *TR

ABS LIGHT AND BRAKE LIGHTS ARE ON. TAKE THE VEHICLE TO A MECHANIC AND THEY SAID THAT IT IS NOT THE FIRST SIENNA WITH THAT PROBLEM AND WHEN BOTH LIGHTS ARE ON, THE ABS SYSTEM IS DISABLED. *TR

WHILE DRIVING IN A RESIDENTIAL AREA, GOING 5-10 MPH, THE ANTI-LOCK BRAKE LIGHT CAME ON FLASHING AND BEEPING LOUDLY. THE STEERING SYSTEM LOCKED UP AND LASTED 45 SECONDS TO 1 MINUTE. IT WOULD OCCUR ON A HIGHWAY AS WELL, NO REASON, GROUND COMPLETELY DRY. IT WOULD OCCUR DRIVING INTO THE PA TURNPIKE TOLL BOOTH, ROUNDING CORNERS, GOING STRAIGHT ON 65 MPH HIGHWAY, (IT OCCURRED INTERMITTENTLY 60-70 TIMES). THE DEALER (NORTH HILLS TOYOTA 7401 MCKNIGHT ROAD, PITTSBURGH, PA 15237 412-318-3000 WERE UNABLE TO FIX IT AFTER I TOOK IT IN TWICE. THE LAST TIME, THEY DISCONNECTED THE ANTILOCK BRAKE SYSTEM TO FIX THE PROBLEM. I CURRENTLY AM DRIVING WITH THE SYSTEM UNCONNECTED. *JS

TL* THE CONTACT OWNS A 2006 TOYOTA SIENNA. THE CONTACT STATED WHILE DRIVING APPROXIMATELY 5 MPH THE ANTI SKID BREAK LIGHT ILLUMINATED AND THE VEHICLE MADE A LOUD BEEPING SOUND. THE CONTACT WAS ABLE TO DRIVE THE VEHICLE TO HER RESIDENCE AFTER THE FAILURE OCCURRED. THE FAILURE OCCURRED SIXTY OR SEVENTY TIMES OVER A PERIOD OF ONE YEAR. THE VEHICLE WAS TAKEN TO A DEALER WHERE THE MECHANIC COULD NOT DIAGNOSE THE FAILURE, BECAUSE IT OCCURRED INTERMITTENTLY. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 84,000.

THE VEHICLE SUSTAINED INTERMITTENT BRAKE FAILURES. THE BRAKES WOULD FUNCTION NORMALLY, THEN COMPLETELY FAIL, THEN BEGIN FUNCTIONING NORMALLY AGAIN. THIS INCIDENT RESULTED IN A LOW SPEED COLLISION. THE INITIAL OCCURRENCE WAS AFTER DRIVING AT HIGHWAY SPEEDS FOR APPROXIMATELY 20 MILES AND BRAKING FOR STOPPED TRAFFIC. AFTER BRAKING TO APPROXIMATELY 10 MPH, THE BRAKES WERE RELEASED, AND THEN THE BRAKE PEDAL WAS APPLIED AGAIN. THERE WAS NO BRAKING EFFORT. THE DRIVER BEGAN PUMPING THE BRAKE PEDAL, AND WAS ABLE TO DO SO THREE TIMES BEFORE IMPACT. THE VEHICLE WAS THEN PLACED IN PARK AND AN ACCIDENT REPORT FILED. THE VEHICLE WAS THEN MOVED UNDER ITS OWN POWER TO A NEARBY PARKING LOT, DURING WHICH TIME THE BRAKES FUNCTIONED NORMALLY. THE VEHICLE WAS THEN TAKEN HOME. THE NEXT MORNING THE VEHICLE WAS BEING BACKED OUT OF THE GARAGE AND HAD ANOTHER COMPLETE BRAKE FAILURE. THE VEHICLE WAS STOPPED BY PLACING THE TRANSMISSION IN PARK. AT THIS TIME, THE VEHICLE IS SCHEDULED TO BE TOWED TO THE LARICHE TOYOTA DEALERSHIP IN FINDLAY, OHIO FOR DIAGNOSIS AND REPAIR. THE TELEPHONE NUMBER TO THEIR SERVICE DEPARTMENT IS 419-423-5656. *TR

I WAS DRIVING APPROXIMATE 25-30 MPH ON A DRY, LEVEL STREET. A CAR STOPPED IN FRONT OF ME TO MAKE A LEFT HAND TURN. I APPLIED THE BRAKES AND NOTHING HAPPENED. I RELEASED AND REAPPLIED THE BRAKES AGAIN AND AGAIN NO RESPONSE. I WAS ABLE TO SWERVE TO THE RIGHT INTO AN EMPTY PARKING LOT TO AVOID HITTING THE CAR OR ANOTHER COLLISION. AFTER SWERVING AND REAPPLYING THE BRAKES A 3RD OR 4TH TIME I WAS ABLE TO COME TO A STOP. MY KIDS AND I WERE SEVERELY SHAKEN, BUT NOT INJURED. WE DECIDED THIS PROBLEM WAS DUE TO THE MASTER CYLINDER. WE REPLACED IT AND HAVE HAD 3 MORE INCIDENTS SINCE REPLACING THE MASTER CYLINDER. 1 WAS IN REVERSE LEAVING MY DRIVE WAY. I WOUND UP HITTING AND EMBANKMENT ACROSS THE STREET TO STOP ME. THIS WAS A SLIGHT DOWN HILL ROLL IN REVERSE. I WENT FROM PARKED TO OUT OF CONTROL. I NEVER TOUCHED THE ACCELERATOR AND HIT THE BRAKE MULTIPLE TIMES AND EVEN TRIED SHIFTING BACK INTO PARK (KNOWING THAT'S BAD FOR THE TRANSMISSION), NOTHING WORKED. AFTER GETTING STOPPED AND PULLING FORWARD EVERYTHING SEEMED NORMAL AGAIN. MY HUSBAND WAS DRIVING IN TRAFFIC AND WE WERE APPROACHING A TURN AND HAD TO MERGE IN TO PERPENDICULAR TRAFFIC. APPROX SPEED 25-35 MPH. THE BRAKES AGAIN COMPLETELY FAILED AND WE HAD TO SWERVE THROUGH A TRAFFIC LIGHT IN TO A FREE LANE OF TRAFFIC TO AVOID A REAR END COLLISION WITH THE CARS INFRONT OF US. WE ORDERED ANOTHER MASTER CYLINDER AND WERE PREPARING TO INSTALL IT. TODAY THE BRAKES FAILED AGAIN AT A STOP SIGN (APPROX SPEED 5-10 MPH) I HAD BEEN STOPPED AND STARTED TO EASE IN TO THE MAIN ROAD WHEN I SAW A CAR COMING FROM THE LEFT. *TR