2004 Toyota Sienna service brakes, hydraulic problems

“THE VSC HAS ACTIVATED MULTIPLE TIMES ON MY VAN FOR NO APPARENT REASON. WHILE DRIVING AT ANY SPEED AND USUALLY IN A TURN, THE VSC LIGHT WILL FLASH, THE WARNING BEEP WILL BEEP, AND THE ABS BRAKES WILL AUTOMATICALLY BE APPLIED AND THE ENGINE WILL QUICKLY DECELERATE. I HAVE ALMOST BEEN REAR-ENDED SEVERAL TIMES BECAUSE THE VAN WILL SUDDENLY DECIDE TO DECELERATE. I HAVE NO CONTROL OVER WHEN THIS HAPPENS AND NO CONTROL OF THE VAN WHEN IT DOES! *TR”

“2004 TOYOTA SIENNA VAN HAS BEEN HAVING INTERMITTENT VSC. AT 10-20 MPH THE ANTI-SKID WARNING LIGHT WILL ACTIVATE WITH WARNING BEEP AND THE ANTI-LOCK BRAKES WILL ACTIVE AND BEGIN TO STOP THE CAR. WHEN THE ANTI-LOCK BRAKES ACTIVATE THE CAR PULLS VIOLENTLY TO THE RIGHT AND IS DIFFICULT TO CONTROL. TOYOTA ISSUED A TSB BR008-04 IN NOVEMBER 2004 STATING ''SOME CUSTOMERS MAY EXPERIENCE AN INTERMITTENT VSC ACTIVATION AFTER STARTING THE ENGINE AND DRIVING STRAIGHT FROM A STOP POSITION. THIS CONDITION IS ALWAYS ACCOMPANIED BY THE INSTRUMENT PANEL VSC LIGHT AND AUDIBLE WARNING BUZZER TURNING ON AT THE SAME TIME. TO PREVENT THIS CONDITION, THE STEERING ANGLE SENSOR HAS BEEN CHANGED. THIS IS AN OBVIOUS RECALL MALFUNCTION. WHY WAS THERE NOT A RECALL? *TR”

“TL*THE CONTACT OWNS A 2004 TOYOTA SIENNA. WHILE DRIVING APPROXIMATELY 5 MPH A SLIP CONTROL ALARM BEGAN TO SOUND AND THE REAR BRAKES LOCKED. DURING THE FAILURE A SLIP CONTROL LIGHT ALSO BEGAN ILLUMINATING ON THE INSTRUMENT PANEL. THE VEHICLE WAS TOWED TO AN INDEPENDENT MECHANIC WHO STATED THAT THERE WAS RUST DEVELOPING ON A SPINDLE NEAR THE FRONT DRIVER'S SIDE SPEED SENSOR. THE FRONT DRIVER'S SIDE SPEED SENSOR WAS REPLACED AND THE RUST WAS CLEANED FROM THE SPINDLE. THE FAILURE CONTINUED TO OCCUR. THE FAILURE AND CURRENT MILEAGES WERE 94,900. THE VIN WAS UNAVAILABLE.”

“TL* THE CONTACT OWNS A 2004 TOYOTA SIENNA. THE CONTACT STATED THAT THE VEHICLE WOULD NOT SHIFT OUT OF PARK JUST AFTER THE IGNITION WAS STARTED. AFTER REPEATED ATTEMPTS, THE CONTACT WAS ABLE TO SHIFT THE VEHICLE OUT OF PARK AS THE ANTI-LOCK BRAKE WARNING LIGHT ILLUMINATED. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER WHERE THE BRAKE SWITCH AND THE ANTI LOCK BRAKING SYSTEM WERE REPLACED. THE FAILURE AND CURRENT MILEAGE WAS 97,145. UPDATED 04/15/11*LJ UPDATED 1/13/2012 *LN *TR”

“I OWE A 2004 TOYOTA SIENNA. WITHIN THE LAST 30 DAYS I HAD TO REPLACE MY BRAKE MASTER CYLINDER AT MY LOCAL TOYOTA DEALERSHIP (OVER $1500) DUE TO A BRAKE FLUID LEAK WHICH CAUSED BRAKE FLUID TO ACCUMULATE INTO THE BOOSTER AND INTO THE ENGINE (AND THE BRAKE LIGHT TO ILLUMINATE). THIS IS A VERY SIMILAR TO THE PROBLEM WHICH CAUSED TOYOTA TO ISSUE THE RECALL THAT WAS ANNOUNCED ON OCTOBER 20TH WITH THE TOYOTA HIGHLANDER MODEL. I FEEL THE RECALL SHOULD BE EXTENDED TO THE SIENNA MODEL. I CONTACTED TOYOTA, AND THEY WILL NOT OFFER ANY REIMBURSEMENT OR RELIEF FOR ME. *TR”

“TL*-THE CONTACT OWNS A 2004 TOYOTA SIENNA. WHILE THE CONTACT WAS DRIVING APPROXIMATELY 35 MPH THE BRAKES BEGAN TO ENGAGE WITHOUT PRESSURE APPLIED TO THE BRAKE PEDAL. THERE WAS AN ILLUMINATION OF THE ANTI-LOCK BRAKE SYSTEM WARNING LIGHT. THE FAILURE WAS A FIRST TIME OCCURRENCE. THE VEHICLE WAS TAKEN TO THE DEALER FOR SERVICE REPAIR. THE TECHNICIAN REPLACED THE STEERING ANGLE SENSOR. THE FAILURE MILEAGE WAS 68,734. THE CURRENT MILEAGE WAS 160,000.”