Worst 2003 Toyota Sienna Problems
Top 3 most-reported issues with average mileage at failure.
Latches / Locks
Unintended Acceleration
Latches/Locks/Linkages:Doors:Latch
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All Problems by Category
Every NHTSA complaint category for the 2003 Toyota Sienna.
| Component | Complaints | Crashes | Fires | Avg Mileage | Volume |
|---|---|---|---|---|---|
| Latches / Locks | 11 | — | — | 72,294 mi | |
| Unintended Acceleration | 11 | 7 | — | 69,500 mi | |
| Latches/Locks/Linkages:Doors:Latch | 9 | — | — | 182,263 mi | |
| Automatic Transmission | 7 | 1 | — | 44,959 mi | |
| Structure:Body:Door | 7 | — | — | 52,409 mi | |
| Tire Defects | 6 | — | — | 44,218 mi | |
| Body Structure | 5 | — | — | 96,443 mi | |
| Engine & Cooling | 4 | 1 | — | — | |
| Gasoline Fuel System | 4 | 1 | — | — | |
| Seat Belts:Rear/Other | 4 | — | — | — | |
| Hydraulic Brakes | 4 | 1 | — | — | |
| Suspension Failures | 4 | — | — | — | |
| Electrical Faults | 3 | — | — | — | |
| Other Equipment | 3 | — | — | — | |
| Service Brakes, Hydraulic:Antilock/Traction Control/Electronic Limited Slip | 3 | — | — | — | |
| Structural Problems | 3 | — | — | — | |
| Airbags | 2 | 1 | — | — | |
| Service Brakes, Hydraulic:Foundation Components:Disc:Rotor | 2 | — | — | — | |
| Other | 1 | — | — | — | |
| Child Seat:Harness Retainer/Chest Clip | 1 | — | — | — | |
| Electrical System:12v/24v/48v Battery:Cables | 1 | — | — | — | |
| Electronic Stability Control | 1 | — | — | — | |
| Engine And Engine Cooling:Engine | 1 | — | — | — | |
| Engine And Engine Cooling:Exhaust System:Emission Control:Catalytic Convertor | 1 | — | — | — | |
| Equipment:Electrical | 1 | — | 1 | — | |
| Latches/Locks/Linkages:Hood:Latch | 1 | — | — | — | |
| Transmission / Drivetrain | 1 | — | — | — | |
| Power Train:Automatic Transmission:Lever And Linkage:Column Shift | 1 | — | — | — | |
| Power Train:Axle Assembly | 1 | — | — | — | |
| Seat Belt Issues | 1 | 1 | — | — |
Search Owner Complaints
Read what owners actually reported to NHTSA for the 2003 Toyota Sienna. Type a keyword (e.g. “transmission”, “stalling”, “brakes”) to filter.
Recalls for 2003 Toyota Sienna
1 NHTSA recall campaign affecting ~600,000 vehicles.
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.
Other Toyota Sienna Years
2003 Toyota Sienna — FAQ
Answers based on real NHTSA complaint and recall data for this specific model year.
Is the 2003 Toyota Sienna reliable?
What are common problems with the 2003 Toyota Sienna?
At what mileage do problems start on the 2003 Toyota Sienna?
How safe is the 2003 Toyota Sienna?
Does the 2003 Toyota Sienna have any recalls?
Should I buy a 2003 Toyota Sienna?
Source: NHTSA (National Highway Traffic Safety Administration) complaint and recall databases, aggregated by VinItel.
Wider context: See the full Toyota Sienna reliability report with year-by-year comparison and generation analysis.
Check Your Specific 2003 Toyota Sienna
Real owner complaints tell you about the model. The VIN tells you about your specific car — accidents, title issues, odometer fraud.
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