Power Train. Review the 67 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Engine And Engine Cooling. Review the 66 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Structure. Review the 52 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

21 crash reports4 fire reports19 injury reports

Power Train complaints

67 reports

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Mileage unknown · Sep 4, 2000

Power Train

MANY COMPLAINTS ABOUT SIENNA'S TORQUE CONVERTERS,TOYOTA SAYS IT IS SAFE TO DRIVE IT.FOR MY WIFE'S AND 14 MONTH OLD I HOPE THEY ARE RIGHT.

NHTSA ODI #730153

Mileage unknown · Aug 29, 2000

Power Train

AS WE WERE DRIVING THE VEHICLE AT ABOUT 65 MI/HR THE TRANSMISSION FAILED WITH NO WARNING. WE WERE ABLE TO COAST INTO A PARKING LOT AND DRIVE ANOTHER MILE BEFORE THE VEHICLE LOCKED UP AND WOULD NOT MOVE. DEALER IN SAN ANTONIO REPLACED THE TRANSMISSION AND TORQUE CONVERTER. REPAIR TOOK LONGER THAN EXPECTED DUE TO TORQUE CONVER…

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NHTSA ODI #729429

Mileage unknown · Aug 27, 2000

Power Train

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WITH 100 MILES ON NEW VEHICLE, THE ENGINE SENSOR INDICATED FAULTY TORQUE CONVERTER. DEALER SAID IF SENSOR LIGHT CAME ON AGAIN, BRING THE VAN IN. SENSOR LIGHT CAME ON AGAIN. AFTER WAITING TWO WEEKS FOR NEW TORQUE CONVERTER TO BE DELIVERED, DEALER REPLACED IT. NEXT DAY, THE TRANSMISSION COULD NOT BE SHIFTED OUT OF "PARK". SHIFT LEVER MOVED, BUT TRANSMISSION REMAINED IN "PARK". PROBLEM WAS DEFECTIVE CLIP. CLIP IS OF DIFFERENT DESIGN THAN THAT OF PREVIOUS YEARS' MODELS OF SAME VEHICLE. MECHANIC SAID THAT THE DESIGN OF CLIP WAS TERRIBLE AND INSUFFICIENT. DEALER ORDERED NEW CLIP AND WILL INSTALL IT UPON ARRIVAL. TOYOTA SERVICE ADVISOR ACKNOWLEDED BROKEN CLIPS OCCURRING ON OTHER MODEL-YEAR 2000 SIENNA VANS. IF SO, THEN WHY DID THE DEALER NOT PUT NEW CLIP ON MY VEHICLE WHEN THE TORQUE CONVERTER WAS REPLACED? WHY HAS NOT TOYOTA ISSUED A RECALL ON THIS CLIP? THE DEALER KNOWS THE CLIP IS BAD AND I BET THE MANUFACTURER DOES ALSO..

NHTSA ODI #729261

Mileage unknown · Aug 26, 2000

Power Train

OUR CHECK ENGINE LIGHT CAME ON WHEN WE WERE ON THE WAY HOME FROM THE DEALERSHIP. IT WAS DIAGNOSED AS A FAULTY TORQUE CONVERTER. THE PART WAS REPLACED AFTER A 3 WEEK WAIT. I'M CONCERNED ABOUT FUTURE ASSOCIATED PROBLEMS FROM HAVING MY TRANSMISSION OPENED

NHTSA ODI #729178

Mileage unknown · Aug 24, 2000

Power Train

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THE FIRST TRANSMISSION FAILED ON AN INTERSTATE HIGHWAY GOING 65 MILES PER HOUR. THE OUT OF STATE TOYOTA DEALER, TOYOTA WEST, IN STATESVILLE, N.C., COMPLETELY REPLACED OUR TRANSMISSION AND CONVERTER ASSEMBLY. WITHIN TWO AND A HALF MONTHS THE ENTIRE ASSEMBLY FAILED AGAIN. OUR LOCAL DEALER, KOONS TOYOTA, REPLACED THE TRANSMISSION AND CONVERTER AGAIN. THIS TIME THEY DID NOT PUT A NEW TRANSMISSION IN BUT A REBUILT ONE. WE WERE TOLD NO NEW TRANSMISSIONS WERE IN THE UNITED STATES!

NHTSA ODI #728917

Mileage unknown · Aug 15, 2000

Power Train

CHECK ENGINE LIGHT CAME ON - INFORMED TORQUE CONVERTER NEEDS TO BE REPLACED. PART STILL ON BACK ORDER PER DEALER 15 VEHICLES AT THIS DEALERSHIP ARE ON BACK ORDER FOR SAME PART. DEALERSHIP STATING OK TO DRIVE PER TOYOTA COMPANY.

NHTSA ODI #728008

Mileage unknown · Aug 14, 2000

Power Train

TOYOTA IS UNABLE TO FIX THIS PROBLEM AS THERE ARE NO PARTS AVAILABLE. THERE IS AN INDICATION THAT TOYOTA KNEW ABOUT THE PROBLEM AS OF 7/24/00 ALTHOUGH WE WERE NOT WARNED PRIOR TO PURCHASING OUR CAR. NO SAFETY DEFECT LISTED. *AK

NHTSA ODI #727923

Mileage unknown · Aug 10, 2000

Power Train

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CHECK ENGINE LIGHT CAME ON 7/29/00 VAN WAS TAKEN IN 7/31/00 AM WAS CALLED SAME DAY PM TOLD TORQUE CONVERTER NEEDED TO BE REPLACED WAS GIVEN A RENTAL CAR SINCE MY AUTO WOULD NOT BE AVAILABLE UNTIL 8/1. WAS INFORMED TOYOTA IS UNABLE TO RECEIVE PART DUE TO BACK ORDER DUE TO SAME PROBLEMS AND TOYOTA ONLY RELEASING A COUPLE A DAY. YESTERDAY I WAS CALLED AND TOLD THEY DID NOT KNOW WHEN THEY WOULD BE ABLE TO RECEIVE PART BUT AUTO IS DRIVEABLE. I CALLED TOYOTA CUSTOMER SVC AND REPORTED INCIDENT. TODAY I RECEIVE PHONE CALL FROM HAMER STATING I NEED TO RETURN AUTO DUE TO MEMO RELEASED MY AUTO IS DRIVEABLE BUT PART WOULD NOT BE AVAILABLE UNTIL 8/16/00. WHY QUESTION WOULD BE WHY WAS NOT MY AUTO DRIVEABLE LAST WEEK BUT IS TODAY. I HAVE REFUSED TO PICK UP MY PURCHANSE AND HAVE RETURNED RENTAL. PLEASE LOOK INTO THIS SINCE I HAVE BEEN TOLD THEY ARE REALLY HAVING ALOT OF PROBLEMS BY THE DEALER , TOYOTA CUSTOMER SVC AND ALSO FROM THE CUSTOMER SVC REPS AT ENTERPRISE CAR RENTAL.*AK

NHTSA ODI #727504

Mileage unknown · Aug 9, 2000

Power Train

SUBSEQUENTLY INFORMED BY DEALER THAT METAL FRAGMENTS HAD CONTAMINATED THE TRANSMISSION FLUID AND THAT THE VEHICLE SHOULD NOT BE DRIVEN BECAUSE OF POSSIBLE UNCOMMANDED DOWN-SHIFTING.

NHTSA ODI #727371

Mileage unknown · Aug 1, 2000

Power Train

THE CHECK ENGINE LIGHT CAME ON BECAUSE METAL CHIPS ARE PRESENT IN TRANSMISSION VALVE BODY WHICH CAUSED TRANSMISSION TO LOCK-UP. YH

NHTSA ODI #553337

Official recalls

10V160000 · Structure

Apr 20, 2010

TOYOTA IS RECALLING CERTAIN MODEL YEAR 1998 THROUGH 2010 SIENNA PASSENGER VEHICLES MANUFACTURED BETWEEN AUGUST 7, 1997 AND JANUARY 4, 2010, CURRENTLY REGISTERED IN OR ORIGINALLY SOLD IN CONNECTICUT, DELAWARE, ILLINOIS, INDIANA, KENTUCKY, MAINE, MARYLAND, MASSACHUSETTS, MICHIGAN, MINNESOTA, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, OHIO, PENNSYLVANIA, RHODE ISLAND, VERMONT, WASHINGTON DISTRICT OF COLUMBIA, VIRGINIA, WEST VIRGINIA, AND WISCONSIN. THE SUBJECT VEHICLES ARE EQUIPPED WITH THE SPARE TIRE STOWED UNDER THE VEHICLE. IF THE VEHICLE IS OPERATED IN THE COLD CLIMATE REGIONS OF THE UNITED STATES WHERE ROAD SALT IS FREQUENTLY USED, WATER SPLASHED BACKWARDS WITH HIGH CONCENTRATIONS OF ROAD SALT CAN REACH THE SPARE TIRE CARRIER AND CORRODE THE SPARE TIRE CARRIER ASSEMBLY CABLE.

Consequence & remedy

Consequence: THE CABLE MAY BREAK DUE TO EXCESSIVE CORROSION AND THE SPARE TIRE MAY SEPARATE FROM THE VEHICLE, POSSIBLY RESULTING IN A VEHICLE CRASH.

Remedy: TOYOTA WILL NOTIFY OWNERS WITH AN INTERIM LETTER INITIALLY INSTRUCTING THEM TO BRING THEIR VEHICLE TO AUTHORIZED DEALERS TO INSPECT FOR CORROSION. A SECOND NOTICE WILL BE SENT WHEN THE PERMANENT REMEDY IS AVAILABLE. FOR MORE INFORMATION, PLEASE SEE TOYOTA'S AMENDED RECALL REPORT OF JULY 19, 2010. THE SAFETY RECALL IS EXPECTED TO BEGIN ON OCTOBER 12, 2010. OWNERS MAY CONTACT TOYOTA AT 1-800-331-4331.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

DP02004 · Engine Seizure

Opened Apr 30, 2002 · Closed Jun 20, 2002

Status: closed (inferred from source dates) · Engine And Engine Cooling

No summary supplied.

PE99070 · Steering Wheel To Return To Center

Opened Nov 17, 1999 · Closed Apr 12, 2000

Status: closed (inferred from source dates) · Steering

There is no summary currently available