NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
294 reports77,342 miles · Jan 15, 2004
Engine And Engine Cooling
HAD SLUDGE IN THE ENGINE. ENGINE LOST OIL AND SMOKE COMING OUT THE TAIL PIPE. THEY REBUILT MY ENGINE FOR FREE. SAYING THAT I DID NOT CHANGE OIL FREQUENT ENOUGH. I HAVE PROOF AND DID CHANGE EVERY 4-5000 MILES BUT NOT WITH THE TOYOTA DEALERSHIP. MY CONCERN IS THAT WHAT DID THEY CHANGE TO MAKE SURE THIS DOESN\\'T HAPPEN AGAIN. …
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HAD SLUDGE IN THE ENGINE. ENGINE LOST OIL AND SMOKE COMING OUT THE TAIL PIPE. THEY REBUILT MY ENGINE FOR FREE. SAYING THAT I DID NOT CHANGE OIL FREQUENT ENOUGH. I HAVE PROOF AND DID CHANGE EVERY 4-5000 MILES BUT NOT WITH THE TOYOTA DEALERSHIP. MY CONCERN IS THAT WHAT DID THEY CHANGE TO MAKE SURE THIS DOESN\\'T HAPPEN AGAIN. THEY COULD NOT PROMISE ME IT WOULDN\\'T EVEN IF I CHANGED THE OIL EVERY 3000 MILES
NHTSA ODI #10070130
35,431 miles · Jan 15, 2004
Engine And Engine Cooling
ENGINE HAD TO BE REPLACED DUE TO OIL SLUDGE, OIL CHANGES WERE MADE MADE PROMPTLY.
NHTSA ODI #10069256
60,000 miles · Jan 15, 2004
Engine And Engine Cooling
THE ENGINE STOPPED OPERATING DUE TO ENGINE SLUDGE. THE CONSUMER INDICATED THAT THE ENGINE BURNED OIL TOO FAST WHICH CAUSED THE SLUDGE TO BUILD UP. THE DEALER SAYS THE ENGINE HAS TO BE REPLACED. PLEASE PROVIDE ANY ADDITIONAL INFORMATION. *NM
NHTSA ODI #10055218
Mileage unknown · Jan 6, 2004
Engine And Engine Cooling
FAX FM GEORGE A. STOUFFER (NC) REQUEST THAT TOYOTA COVER THE COST OF A NEW ENGINE FOR THIS 1998 TOYOTA SIENNA DUE TO AN "OIL GEL" PROBLEM. *MR WHITE SMOKE HAD COME FROM THE TAIL PIPE. THE SERVICE DEALER DIAGNOSED THAT TOYOTA LABELED AN "OIL GEL PROBLEM" AND TOLD THE CONSUMER THAT THE ENGINE WOULD BE CLEANED UNDER WARRANTY. …
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FAX FM GEORGE A. STOUFFER (NC) REQUEST THAT TOYOTA COVER THE COST OF A NEW ENGINE FOR THIS 1998 TOYOTA SIENNA DUE TO AN "OIL GEL" PROBLEM. *MR WHITE SMOKE HAD COME FROM THE TAIL PIPE. THE SERVICE DEALER DIAGNOSED THAT TOYOTA LABELED AN "OIL GEL PROBLEM" AND TOLD THE CONSUMER THAT THE ENGINE WOULD BE CLEANED UNDER WARRANTY. THE PROBLEM RECURRED AND DESTROYED THE ENGINE. TOYOTA SHOULD BE RESPONSIBLE FOR THE PAYMENT UNDER THE SAME PROVISIONS AS BEFORE. (THEY REFUSED THE REQUEST) *SC THE REQUEST FOR ASSISTANCE WAS DENIED, BECAUSE THE MANUFACTURER STATED THE CONSUMER DID NOT PROPERLY MAINTAIN THE VEHICLE, HOWEVER THE CONSUMER HAD PROOF THAT THE VEHICLE WAS WELL MAINTAINED, ONCE THAT PROOF WAS SENT, THE MANUFACTURER CLAIMED THE WARRANTY ONLY COVERED ONE SINGLE REPAIR, BUT THE ORIGINAL REPAIR NEVER FIXED THE DESIGN FLAW, BUT ONLY CLEANED OUT THE OIL GEL. *JB
NHTSA ODI #10053421
109,000 miles · Dec 10, 2003
Engine And Engine Cooling
WE HAVE A TOYOTA SIENNA VAN. IN 8/02 WE HAD 'OIL GEL SLUDGING' AND THE ENGINE WAS FIXED UNDER WARRANTY. NOW, WE HAVE EXACTLY THE SAME PROBLEM AND TOYOTA REFUSES TO PAY FOR THE REPAIR. WITH THE INITIAL REPAIR, THEY ACKNOWLEDGED IT WAS A DESIGN FLAW. SINCE THE ENGINE WAS POORLY DESIGNED, AND THERE IS A RECURRING PROBLEM DUE TO THE…
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WE HAVE A TOYOTA SIENNA VAN. IN 8/02 WE HAD 'OIL GEL SLUDGING' AND THE ENGINE WAS FIXED UNDER WARRANTY. NOW, WE HAVE EXACTLY THE SAME PROBLEM AND TOYOTA REFUSES TO PAY FOR THE REPAIR. WITH THE INITIAL REPAIR, THEY ACKNOWLEDGED IT WAS A DESIGN FLAW. SINCE THE ENGINE WAS POORLY DESIGNED, AND THERE IS A RECURRING PROBLEM DUE TO THE DESIGN, WHY DO THEY THINK A ONE-TIME REPAIR WILL SUFFICE? *LA
NHTSA ODI #10049536
Mileage unknown · Nov 24, 2003
Engine And Engine Cooling
WE ARE ON OUR THIRD MOTOR FOR A TOYOTA SIENNA 1998 VAN, PURCHASED NEW. SEVERAL MONTHS AGO, WE HAD THE MOTOR REPLACED. WE WERE CHARGED $4-500, THOUGH TOYOTA HANDLED IT UNDER WARRANTY. NOW, 10,000 MILES LATER, WE MUST REPLACE THE ENGINE AGAIN, AT A COST OF $6000. THE PROBLEM, AGAIN, IS 'SLUDGE'. WE ARE ALSO, LIKE OTHERS FILING COM…
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WE ARE ON OUR THIRD MOTOR FOR A TOYOTA SIENNA 1998 VAN, PURCHASED NEW. SEVERAL MONTHS AGO, WE HAD THE MOTOR REPLACED. WE WERE CHARGED $4-500, THOUGH TOYOTA HANDLED IT UNDER WARRANTY. NOW, 10,000 MILES LATER, WE MUST REPLACE THE ENGINE AGAIN, AT A COST OF $6000. THE PROBLEM, AGAIN, IS 'SLUDGE'. WE ARE ALSO, LIKE OTHERS FILING COMPLAINTS ON YOUR SITE AND OTHERS, BEING HARASSED BY THE DEALERSHIP, WHO CLAIM WE HAVE "NEVER CHANGED THE OIL." FOR ARGUMENT, LET'S SAY THIS IS TRUE. IN 10,000 MILES, YOU WILL UTTERLY DESTROY A NEW ENGINE IF YOU MISS AN OIL CHANGE, RECOMMENDED FOR BETWEEN 5,000 AND 7500 MILES? I BELIEVE THE PUBLIC HAS BEEN SOLD A DEFECTIVE DESIGN, AND THAT THE COMPANY, DELIBERATELY OR NOT, IS REFUSING TO TAKE OWNER COMPLAINTS SERIOUSLY. *LA
NHTSA ODI #10047512
Mileage unknown · Nov 3, 2003
Steering
AFTER DECELERATING EXITING OFF A FREEWAY RAMP AND MAKING A LEFT OR RIGHT TURN, THE STEERING WHEEL WOULD LOCK UP MOMENTARILY AND THEN DISENGAGE. *LA
NHTSA ODI #10045339
18,000 miles · Oct 4, 2003
Fuel System, Gasoline
MY ENGINE LIGHT IS ON AND IT ALL MAY BE FROM THE GAS CAP. *JB
NHTSA ODI #10041229
Mileage unknown · Sep 29, 2003
Latches/locks/linkages
SIDE SLIDING DOORS OF TOYOTA SIENNA MINI-VAN DO NOT UNLOCK / LOCK OR RELEASE FOR OPEN. DOOR BUTTON IS STUCK IN A PUSHED-IN POSITION AND WILL NOT RELEASE ON EITHER SIDE DOOR. THIS PREVENTS PASSENGER FROM OPENING DOOR. PASSENGER IS LOCKED IN AND CANNOT EXIT THE VAN. PASSENGER MUST EXIT THE VAN BY CLIMBING INTO THE FRONT SEAT …
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SIDE SLIDING DOORS OF TOYOTA SIENNA MINI-VAN DO NOT UNLOCK / LOCK OR RELEASE FOR OPEN. DOOR BUTTON IS STUCK IN A PUSHED-IN POSITION AND WILL NOT RELEASE ON EITHER SIDE DOOR. THIS PREVENTS PASSENGER FROM OPENING DOOR. PASSENGER IS LOCKED IN AND CANNOT EXIT THE VAN. PASSENGER MUST EXIT THE VAN BY CLIMBING INTO THE FRONT SEAT AND OUT THE FRONT DOOR OF THE VAN. THE BUTTON ON THE SLIDE DOOR EVENTUALLY UNSTICKS AND POPS OUT, ALLOWING THE DOOR TO OPEN.
NHTSA ODI #10040924
3,800 miles · Sep 15, 2003
SteeringCrash
THE STEERING WHEEL WAS TURNED IN THE RIGHT POSITION AND THE DRIVER WAS IN THE PROCESS OF STRAIGHTENING IT WHEN IT LOCKED UP. THIS CAUSED LOST OF CONTROL OF THE VEHICLE. THE VEHICLE HAD GONE INTO THE HIGHWAY DIVIDER AND WAS TOTALED. THE CAUSE OF THE FAILURE WAS UNDETERMINED. *AK *SCC *JB
NHTSA ODI #10034334
Official recalls
2Apr 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.
Oct 19, 1998
VEHICLE DESCRIPTION: SPORT UTILITY VEHICLES, MINI VANS AND PASSENGER VEHICLES EQUIPPED WITH A THEFT DETERRENT SYSTEMS (TDS) SUPPLIED BY AUDIOVOX CORPORATION AND DISTRIBUTED BY SOUTHEAST TOYOTA DISTRIBUTORS, INC. IN THE STATES OF ALABAMA, FLORIDA, GEORGIA, NORTH AND SOUTH CAROLINA. THE ALARM WIRING HARNESS PLUGS INTO THE VEHICLE'S IGNITION SWITCH AND THE VEHICLE'S IGNITION SWITCH WIRING HARNESS PLUGS INTO THE ALARM HARNESS TO COMPLETE THE CIRCUIT. A PERCENTAGE OF THE FEMALE TERMINALS USED IN THE ALARM CONNECTOR WERE FOUND TO BE DEFECTIVE, CAUSING AN 'OPEN CIRCUIT' CONDITION WHEN MATED TO THE MALE IGNITION SWITCH TERMINALS.
Consequence & remedy
Consequence: THIS CONDITION CAN CAUSE INTERMITTENT PERFORMANCE OF THE VEHICLE'S ELECTRICAL COMPONENTS SUCH AS THE DASH WARNING LIGHTS AND/OR HVAC FAN SPEED CONTROLS. ALSO, THE VEHICLE MAY NOT RUN SMOOTHLY AND COULD STALL.
Remedy: DEALERS WILL INSPECT THE DATE CODE LABEL ON THE SECURITY SYSTEM HARNESS AND ANY DISPLAYING THE MANUFACTURING/FINAL DATE CODE WILL BE REPLACED WITH NEWLY PRODUCED HARNESSES. THE DATE CODES ARE: RAV4 - 6/24/98, 6/25/98, 6/26/98; SIENNA - 6/25/98, 6/26/98; AND AVALON - 6/30/98, 7/1/98, 8/31/98, 9/1/98, 9/2/98, AND 9/3/98.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗