There are 14 owner-reported air bags & restraints complaints for the 2015 Toyota Siennain NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
Passenger side middle row seat belt has locked up fully retracted. Dealership service center stated on invoice, “nothing found to be causing the binding other than a mechanical issue, quoted replacing the seat belt assembly.”
Water intrusion from front sunroof when vehicle is parked at a 5% grade with the nose downward. Multiple vehicles exhibit this issue. Toyota is not creating any TSB and will mot even remedy it even if we have an extended warranty. Here is a link to the discussion thread: [XXX] I have not posted on this thread but I have the exact same issue for years. Toyota dealerships want me to first pay $1000 in labor to pull down the headliner and test. Then ask the warranty to cover the assembly, if they don't cover it... then I am on the hook for the work. The missing seam sealer is a common issue that will not manifest inside the 3yr / 36k mile warranty. My issue started around 2020 that I noticed and every dealership would not help me other than place a large burden on me. This can impact the electrical and the airbag curtains. The issue needs to have a seal sealer added to the sunroof assembly as the fix. As a family vehicle, this is a dangerous issue for multiple occupants in a single 7 or 8 person hauler minivan. Please ask Toyota remedy this issue that has been going on for over a decade. Please ask them to stop forcing customers to have sunroofs and panoroofs... when they can't build it correctly. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
SEAT BELT WILL NOT RETRACT. NO ACCIDENT/COLLISSION. IT SEEMS THE SEAT BELT IS DEFECTED AND DEALER REFUSES TO CORRECT, STATING SEAT BELT IS OUT OF WARRANTY. MY CHILD PULLED THE SEAT BELT TO PUT IT ON AND IT JUST SIMPLY DID NOT RETRACT.
3 ISSUE WITH 5TDKK3DC2FS[XXX] TOYOTA SIENNA 2015 LE VAN *1 - SEAT BELT - 2ND ROW DRIVER SIDE SEAT BELT CANNOT BE WEAR. CANNOT WEAR SEAT BELT AS THE RED PART THAT FASTENS THE SEAT BELT CLIP DOES NOT WORK. UNABLE TO FASTEN SEAT BELT IN THE 2ND ROW SEAT BEHIND DRIVER. 2* AT 30,000 MILES WITH PROPER CAREFUL DRIVING BRAKE LIGHTS TURN ON IN RAIN - ALL THE LIGHTS START TO FLASH IN DASHBOARD. *3- FRONT DRIVER SIDE BUMBER WHERE IT MEETS THE FENDER DOES NOT HOLD BUMPER PROPERLY. THE CLIPS THAT HOLD BUMPER ARE NOT MADE PROPERLY. I HAVE SEEN AT LEAST 4 TOYOTA SIENNA WITH SAME ISSUES AT DIFFERENT PLACES OF SAME MODEL / DESIGN. WHEN PUSH BACK TO FIX THE NUMBER IT STAYS AND AFTER SHORT 5-10 MILES DRIVE IT COMES BACK LOOSE AGAIN. SO I HAVE TO KEEP PUSHING THE BUMPER BACK. I HAVE THE VAN FOR OVER A YEAR NOW. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TT
MY VEHICLE WAS RECENTLY STOLEN. IT WAS RECOVERED AS A CRASHED ABANDONED VEHICLE BY THE GLEN RIDGE POLICE DEPARTMENT (CASE #19-20437). THE VEHICLE SUFFERED AN APPARENT MAJOR FRONTAL COLLISION BUT THE AIRBAGS FAILED TO DEPLOY (SEE IMAGES). I AM REPORTING THIS FAILURE FOR YOUR INVESTIGATIVE REFERENCE. I HAVE NO FURTHER DETAILS AS IT WAS NOT IN MY POSSESSION WHEN THE COLLISION TOOK PLACE.
THE REAR MOST DRIVER SIDE SEAT BELT WAS SEVERELY DAMAGED BY A STEEL BRACKET THAT HOLDS THE CENTER SEAT/ MIDDLE SEAT ON THE 8 PASSENGER MODEL. THIS BRACKET IS LOCATED BEHIND THE PLASTIC COVERS. THE STEEL BRACKET IS RAZOR SHARP. THE SEAT BELT WAS SEVERELY CUT. WE CAN SEND PICTURES. THE SEAT BELT HAS BEEN REPLACED BY US. BUT OTHER OWNERS NEED TO BE MADE AWARE OF THIS DESIGN FLAW. THANKS.
SHOULDER STRAPS OF PASSENGER MID-SECTION SEATS HAVE LOST TENSION AND DO NOT RELIABLY RETRACT, POSSIBLY DUE TO EXTENDED CAR SEAT INSTALLATION (BRITAX PINNACLE CLICKTIGHT, WAS INSTALLED FOR PROLONGED PERIOD IN HARNESS MODE). LACK OF SHOULDER STRAP TENSION IS A SEVERE HAZARD AS I ATTEMPTED TO CONVERT BRITAX PINNACLE CLICKTIGHT TO BOOSTER MODE BUT FOUND THAT CHILD COULD LOOSEN THEIR SHOULDER STRAP AND BE SITTING IN BOOSTER MODE SEAT WITH A LOOSE SHOULDER STRAP THAT IS NOT HOLDING THEM TIGHT AND SECURE AT THE SHOULDER.
I WAS HIT HARD DIRECTLY ON SIDE AND SIDE AIRBAGS DIDN'T DEPLOY. MY VEHICLE WAS TOTALED. MY VEHICLE WAS MOVING MAYBE 5 MILES PER HOUR AND I WAS TURNING LEFT.
TL* THE CONTACT OWNS A 2015 TOYOTA SIENNA. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 16V858000 (AIR BAGS); HOWEVER, THE PART FOR THE RECALL REPAIR WAS UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE CONTACT HAD NOT EXPERIENCED A FAILURE. THE MANUFACTURER WAS NOT MADE AWARE OF THE ISSUE. VIN TOOL CONFIRMS PARTS NOT AVAILABLE.
I WAS TRAVELING WEST ON RT 202 (BUTLER BLVD) IN JACKSONVILLE, FL. MY SPEED WAS 65MPH AND I WAS IN THE MIDDLE LANE. I WAS DRIVING AND MY SON, CHRISTOPHER, WHO IS DISABLED WAS SITTING IN THE MIDDLE ROW CENTER IN HIS WHEELCHAIR WHICH WAS ANCHORED TO THE FLOOR BY FOUR TIE-DOWNS. A CAR TRYING TO PASS US IN THE OUTSIDE LEFT LANE HIT MY VEHICLE IN THE DRIVERS SIDE REAR AND CAUSED US TO SPIN IN THE ROADWAY. AFTER WE CAME OUT OF THE SPIN WE HIT THE CONCRETE BARRIER DIVIDING THE ROADWAY. MY VEHICLE WAS TOTALED WITH EXTENSIVE DAMAGE TO FRONT AND FRAME. MY SON AND I WERE SLIGHTLY INJURED BUT NOT TREATED ON THE SCENE. MY AIRBAGS DID NOT DEPLOY? NOT THE ONES IN THE FRONT OR THE SIDE AIRBAGS DID NOT DEPLOY? THIS IS A CONVERSION ACCESSIBLE VEHICLE THAT HAS BEEN ALTERED FROM THE ORIGINAL. I HAVE RE-PURCHASED THE SAME TYPE OF VEHICLE AND I WANT TO BE SURE THAT THE AIRBAGS ARE WORKING? TOYOTA HAS ALREADY PULLED THE "BLACK BOX" AND STARTED THEIR INVESTIGATION. I JUST WANT TO BE SURE THAT I GET THE "TRUE" CAUSE OF WHY THE AIRBAGS DID NOT DEPLOY?
I HAD A FRONT DAMAGED CAR ACCIDENT IN 2016. I REALIZED THAT NONE OF AIRBAGS WERE DEPLOYED SINCE I WAS ASKED BY AT FAULT DRIVER'S INSURANCE ATTORNEY. I WAS DRIVING ON A LOCAL ONE WAY ROAD AND A CAR SHOWED UP IN FRONT OF ME ALL OF A SUDDEN. IT WAS CROSSING IN FRONT OF ME AS IGNORING "STOP" SIGN ON HIS SIDE. IT WAS TOO CLOSE TO AVOID AND BRAKE WAS NOT HELPFUL.
2ND ROW SEAT BELTS BIND AND GENERALLY DO NOT RETRACT, EVEN WHEN SEAT IS OCCUPIED. THEY REMAIN LOOSE AND FLOP AROUND AND DO NOT "SNUG UP" AGAINST THE OCCUPANT AS EVERY OTHER SEAT BELT DOES. DEALER SAYS "ALL THE SIENNA'S DO THAT" BECAUSE IT'S SUCH A LONG BELT - IN FACT HE REPLACED THE BELT AND THE REPLACEMENT DOES THE SAME THING. THIS SEEMS LIKE A SAFETY HAZARD SINCE IN THE CASE OF A WRECK I WORRY THAT THE SEAT BELT MAY NOT RETRACT CORRECTLY TO RESTRAIN THE OCCUPANT, OR EVEN IF IT RETRACTS IT MAY NOT BE POSITIONED CORRECTLY. MOSTLY THE 2ND ROW BELTS ARE VERY LOOSE AND FLOP AROUND UNLESS AN ADULT MAKES A CONSCIOUS EFFORT TO SLOWLY AND VERY CAREFULLY FEED THE BACK INTO THE REEL.
TL* THE CONTACT OWNS A 2015 TOYOTA SIENNA. WHILE AT A STOP LIGHT, ANOTHER VEHICLE CRASHED INTO THE REAR OF THE CONTACT'S VEHICLE. THE INCIDENT CAUSED THE CONTACT TO CRASH INTO THE PRECEDING VEHICLE. THE AIR BAGS DID NOT DEPLOY. A POLICE REPORT WAS FILED. THE CONTACT, THE FRONT SEAT PASSENGER, AND THE REAR SEAT PASSENGER SUSTAINED UNKNOWN INJURIES THAT REQUIRED MEDICAL ATTENTION. THE VEHICLE WAS NOT DIAGNOSED NOR REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 54,000.
THE AIRBAG ON/OFF INDICATOR STAYS OFF EVEN WHEN AN ADULT IS SITTING ON THE PASSENGER SEAT. THE ISSUE IS NOT THERE IN MY 2014 TOYOTA CAMRY. THE DEALER KOONS TOYOTA VERIFIED THAT SENSOR IS REGISTERING CORRECT WEIGHT. THE DEALER STATES THAT TOYOTA DOES NOT TELL THEM THAT AT WHAT WEIGHT THE AIRBAG SHOULD TURN ON. THE DEALER'S TEST WEIGHT OF 66LB "ON THE SEAT" DID NOT TURN IT ON. THE DEALER TEST REPORT IS ATTACHED. THANKS
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