There are 2 owner-reported lighting complaints for the 2008 Toyota Siennain NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
AIRBAG INDICATOR WARNING LIGHT FLASHES CONTINUOUSLY. JIGGLED WIRES UNDER FRONT PASSENGER SEAT A YEAR AGO, AND THE WARNING LIGHT QUIT FLASHING FOR A COUPLE MONTHS. BUT THEN IT STARTED FLASHING AGAIN ABOUT SIX MONTHS AGO. A WARRANTY ENHANCEMENT NOTIFICATION - ZTX WAS RECEIVED FROM TOYOTA A FEW DAYS AGO. LOCAL DEALER SAID THAT DIAGNOSIS WOULD TAKE TWO HOURS & COST $130. READ ON THE INTERNET TO TRY DISCONNECTING THE YELLOW WIRE (AIRBAG SENSOR) UNDER THE FRONT PASSENGER SEAT AND WAIT 15 SECONDS. TRIED THAT AND THE FLASHING LIGHT HAS GONE OFF AGAIN. THIS YELLOW CONNECTOR PIN AND WIRING SHOULD BE FULLY REPLACED BY TOYOTA UNDER A FULL RECALL SO THAT THIS DOESN'T BECOME A RECURRING, REGULAR ISSUE FOR SIENNA OWNERS. *TR
COULD NOT STOP AFTER MY ABS BRAKES LOCKED UP THEN WERE SOFT/ABSENT, DROVE UP ON THE CENTER MEDIAN, GOT BACK ON THE ROAD ATTEMPTING TO GO AROUND THE CAR INFRONT ON THE RIGHT SIDE COULDN'T DUE TO OTHER TRAFFIC THEN WENT BACK TO THE LEFT GOT BACK UP ON THE MEDIAN. MY PASSENGER SIDE FRONT BUMPER CORNER WENT UNDER THE OTHER DRIVER'S DRIVER'S SIDE REAR BUMPER CORNER LIFTING HER CAR UP INTO THE AIR CAUSING IT TO FALL ON TOP OF THE PASSENGER SIDE OF MY HOOD AND FRONT RIGHT FENDER CRUSHING THEM, RESULTING IN OVER 10000 DOLLARS DAMAGE. NO ONE WAS SERIOUSLY HURT AND NEITHER CAR'S AIRBAGS DEPLOYED. *TR
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 25, 2026