Home · 2012 Toyota Sienna · Complaints
What 247 owners told NHTSA about the 2012 Toyota Sienna
These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.
2 of 247 complaints match · Electrical system · crash/fire/injury only · clear filters
Dec 5, 2018Electrical systemFire
WAS DRIVING HOME FROM RUNNING ERRANDS, ABOUT A 4 MILE DRIVE AT 35 MILES/HR. AT A STOP LIGHT THERE SEEMED TO BE SOME SORT OF ELECTRICAL SURGE. ALL THE DASHBOARD LIGHTS FLASHED AND THE VEHICLE TURNED OFF. I WAS ABLE TO PUT THE CAR IN PARK AND RESTART IT. THERE WERE NO WARNING LIGHTS ON AFTER RESTARTING THE ENGINE, SO I ASSUMED IT WAS A FLUKE AND CONTINUED ON MY WAY HOME. A LITTLE FURTHER DOWN THE ROAD AT ANOTHER STOP LIGHT IT HAPPENED AGAIN. I PULLED INTO MY DRIVEWAY AND STARTED TO UNLOAD MY CAR WHEN I NOTICED SMOKE EMANATING FROM UNDER THE HOOD. I OPENED THE HOOD TO DISCOVER A SMALL FIRE COMING FROM A LARGE GROUP OF WRAPPED WIRES BEHIND THE BATTERY. I WAS ABLE TO PUT IT OUT QUICKLY WITH A FIRE EXTINGUISHER, BUT THE CAR IS COMPLETELY DEAD AND THE ENTIRE ELECTRICAL HARNESS NEEDS TO BE REPLACED AS WELL AS SOME OTHER NEARBY PARTS. THIS VEHICLE WAS WELL TAKEN CARE OF. THERE IS JUST UNDER 65,000 MILES ON IT AND I BROUGHT IT IN FOR IT'S 60K MAINTENANCE 6 MONTHS AGO (6/11/18). AT THAT TIME THEY ALSO TOOK CARE OF THE RECALLS FOR THE PASSENGER SIDE AIRBAG AND THE POWER SLIDING DOORS. SINCE I WAS ABLE TO CONTAIN THE FIRE QUICKLY, THIS VEHICLE SUFFERED MINIMAL ENGINE DAMAGE, SO I'M WONDERING IF IT SHOULD BE USED FOR INVESTIGATION PURPOSES BEFORE REPAIRS ARE MADE AS IT APPEARS THIS MAY HAVE HAPPENED WITH OTHER TOYOTA SIENNAS THAT SUFFERED MUCH GREATER DAMAGE.
NHTSA ODI 11156461
Sep 11, 2018Electrical systemVisibility & wipersEngineFire
THIS CAR CAUGHT ON FIRE FEW MINUTES AFTER SOME ELECTRICAL ISSUES- WHILE DRIVING THE CAR WITH EVERYTHING LOOKING JUST FINE , THE A/C FAN FLUCTUATED ON AND OFF -CAR BLUE TOOTH ALSO KEPT DISCONNECTED AND RECONNECT FOR A FEW SECONDS THEN ALL DASHBOARD LIGHTS ILLUMINATED ON AND OFF FEW TIMES . AFTER MAYBE 2 MINUETS I REACHED HOME ,MAY FAMILY GOT OFF THE CAR WHEN I NOTICED SMOKE COMING FROM THE HOOD . I OPENED THE HOOD TO FIND A MEDIUM SIZE FIRE COMING FROM THE DRIVER SIDE OF THE ENGINE, I CALLED 911 RIGHT AWAY . IN LESS THAN 10-15 MINS MOST OF THE CAR MELT FROM THE FIRE PLUS THE WHOLE GARAGE.
NHTSA ODI 11128824
Working with the data? Download all 247 complaints as CSV · fetched from NHTSA July 19, 2026
How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your
pre-purchase inspection list. Back to the
full 2012 Toyota Sienna verdict →