Rain water leaking into the parked vehicle on the driver and passenger seat belts, potentially weakening the belts and creating odor.
2015 Toyota Sienna
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 2015 Toyota Sienna do not stand out strongly from the model-year median of 183.
About this comparison →How this year compares
Owner complaints by model year
Compare all Sienna years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
130 reports with mileage · 101 unknown
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Structure. Review the 60 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Electrical System. Review the 44 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Engine. Review the 16 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
Seat Belts complaints
8 reportsWater 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 ex…
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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)
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.”
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 L…
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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
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 …
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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…
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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.
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…
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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.
Official recalls
619V553000 · Service Brakes, Hydraulic:foundation Components:hoses, Lines/piping, And Fittings
Jul 25, 2019
Vantage Mobility International, LLC (Vantage) is recalling certain 2012-2018 AMS Genesis wheelchair vans, built on a Toyota Sienna vehicles. The rubber brake hoses that attach to the rear wheel assembly may be too short, causing them to rub against the rear axle trailing arm.
Consequence & remedy
Consequence: The contact may cause failure of the rear brake hoses, resulting in a loss of vehicle control and reduced braking ability, increasing the risk of a crash.
Remedy: Vantage will notify owners, and dealers will install a set of rear brake hoses that will provide the proper clearance, free of charge. The recall began December 16, 2019. Owners may contact Vantage customer service at 1-800-488-9082.
19V410000 · Service Brakes, Hydraulic:foundation Components:hoses, Lines/piping, And Fittings
Jun 4, 2019
Braun Corporation (Braun) is recalling certain 2014-2019 Toyota Sienna mobility van conversions. The brake lines may have incorrect tube nut fittings installed, which may cause a pressure drop within the braking system.
Consequence & remedy
Consequence: The reduction in the braking system pressure may cause a loss of braking power in the rear braking system, increasing the risk of crash.
Remedy: Braun has notified owners, and dealers will install an adaptor to correct the issue, free of charge. The recall began June 25, 2019. Owners may contact Braun customer service at 1-800-488-0359.
16V858000 · Structure:body:door
Nov 29, 2016
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain model year 2011-2016 Toyota Sienna minivans manufactured January 4, 2010, to August 12, 2016. If the power sliding door is unable to be opened when commanded, such as if the door is frozen shut, the door may subsequently open unexpectedly, possibly while the vehicle is moving.
Consequence & remedy
Consequence: If door opens while the vehicle is moving, there would be an increased risk of injury to the vehicle occupants.
Remedy: Toyota will notify owners, and dealers will replace the junction block, rear sliding door wire harnesses, and install two sub wire harnesses, free of charge. The recall began on July 28, 2017. Owners may contact Toyota customer service at 1-800-331-4331. Toyota's number for this recall is G04.
15V240000 · Structure:body:roof And Pillars
Apr 22, 2015
Gulf States Toyota, Inc. (GST) is recalling certain model year 2015 Toyota Sienna vehicles manufactured January 23, 2015, to April 13, 2015, and equipped with non-Toyota-brand overhead entertainment accessories installed by GST. During reassembly of the interior after the overhead entertainment system installation, a trim panel securing clip may have been reused instead of being replaced.
Consequence & remedy
Consequence: If the clip was damaged during the entertainment system installation, in the event of a side curtain air bag deployment, the trim panel may detach and strike one of the vehicle occupants, increasing the risk of injury.
Remedy: GST will notify owners, and dealers will replace the trim panel securing clip, free of charge. The recall began June 5, 2015. Owners may contact GST customer service at 1-800-444-1074. GST's number for this recall is 15R1.
15V236000 · Structure:body:roof And Pillars
Apr 21, 2015
Southeast Toyota Distributors, LLC (SET) is recalling certain model year 2015 Sienna vehicles manufactured September 1, 2014, to April 13, 2015 and equipped with overhead entertainment accessories installed by SET. During reassembly of the interior after the overhead entertainment system installation, a trim panel securing clip may have been reused instead of being replaced.
Consequence & remedy
Consequence: If the clip was damaged during the entertainment system installation, in the event of a side curtain air bag deployment, the trim panel may detach and strike one of the vehicle occupants, increasing the risk of injury.
Remedy: SET will notify owners, and dealers will replace the trim panel securing clip, free of charge. The recall began on May 22, 2015. Owners may contact SET customer service at 1-866-405-4226. SET's number for this recall is SET15B.
14V757000 · Air Bags:side/window
Nov 26, 2014
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain model year 2015 Sienna vehicles manufactured September 2, 2014, to November 25, 2014. In the event of a crash that necessitates the deployment of the curtain shield airbag (CSA), the second row overhead assist grips may detach.
Consequence & remedy
Consequence: If the assist grip detaches due to CSA deployment, the grip may strike a vehicle occupant, increasing the risk of injury.
Remedy: Toyota will notify owners, and dealers will modify the headliner near the second row overhead assist grip, free of charge. The recall began on January 15, 2015. Owners may contact Toyota customer service at 1-800-331-4331.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
0No exact-year investigations in this snapshot.
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