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2021 Toyota Sienna Hybrid Problems and Recalls
Owners filed 45 complaints with NHTSA about the 2021 Toyota Sienna Hybrid, most often about the air bags (29% of complaints). It is 4th of 6 Sienna Hybrid model years by number of complaints and has 4 recalls.
Most common 2021 Toyota Sienna Hybrid problems
Air bags
13 complaints · 29%Brakes
9 complaints · 20%The contact owns a 2021 Toyota Sienna Hybrid. The contact stated that while depressing the brake pedal, there was a three-second delay before the brakes would respond. Additionally, the brake pedal was difficult to depress, creating an extended stopping distance. The vehicle was taken to the local dealer who adjusted…
Visibility and wipers
5 complaints · 11%Parts named most often: rearview mirrors/devices.
The contact owns a 2021 Toyota Sienna Hybrid. The contact stated that the passenger's side rearview mirror detached and the rear liftgate door inadvertently opened while parked in the garage. The vehicle was taken to the dealer but was not yet diagnosed nor repaired. The manufacturer was not made aware of the failure.…
Body and structure
5 complaints · 11%Parts named most often: body.
Headliner cut too large, doesn't hold rear passenger climate controls, climate controls fall out and hit rear passengers. This happens at any speed.
The contact owns a 2021 Toyota Sienna Hybrid. The contact stated that after pressing the rear lift gate button, the rear liftgate door failed to open, trapping the dog inside the vehicle. The contact stated that the rear liftgate door was later manually forced open by two good samaritans and the dog was retrieved. The…
Seats
5 complaints · 11%Headliner cut too large, doesn't hold rear passenger climate controls, climate controls fall out and hit rear passengers. This happens at any speed.
The contact owns a 2021 Toyota Sienna Hybrid. The contact stated that while driving at an undisclosed speed, there was an abnormal rattling sound coming from the second-row seats. The message to "check rear seats" was displayed. No warning lights were illuminated. The vehicle was not taken to the dealer or an…
Electrical
4 complaints · 9%Parts named most often: instrument panel.
The contact owns a 2021 Toyota Sienna Hybrid. The contact stated that the vehicle was experiencing inaccurate fuel gauge readings. The contact stated while starting the vehicle, the fuel gauge reading displayed that the fuel tank was empty; however, while the contact was attempting to refuel the vehicle at the gas…
Engine
3 complaints · 7%The contact owned a 2021 Toyota Sienna Hybrid. The vehicle was parked in the driveway when an explosion occurred; the vehicle burned down. The contact was inside the residence when a loud noise was heard, and the house "rocked." the contact ran to the front of the house to investigate and noticed that the vehicle was…
Other or unspecified
3 complaints · 7%
Complaints are owner reports to NHTSA, not verified defects. One complaint can name several components, so shares add up to more than 100%.
2021 Toyota Sienna Hybrid recalls
Equipment Adaptive/Mobility
Risk: An unsecured wheelchair can move during transit, increasing the risk of injury.
Fix: Dealers will inspect and replace the retractors, free of charge. Owner notification letters was mailed january 27, 2026. Owners may contact vantage mobility customer service at 1-800-488-9082.
Full defect summary
Vantage mobility, llc (vm) is recalling certain 2021-2026 honda odyssey, 2021-2025 chrysler pacifica, and toyota sienna vehicles equipped with qrt-deluxe and qrt-max wheelchair restraints. The retractors may not lock, preventing the wheelchair from being properly secured.
Seats: recliner
Risk: An improperly tightened seatback may not adequately restrain the occupant during a crash, increasing their risk of injury.
Fix: Dealers will tighten the seat assembly bolts, free of charge. Owner notification letters were mailed april 1, 2025. Owners may contact toyota's customer service at 1-800-331-4331. Toyota's number for this recall is 25ta05.
Full defect summary
Toyota motor engineering & manufacturing (toyota) is recalling certain 2021-2025 sienna hybrid vehicles. The bolts for the seatbacks on the third-row seat assemblies may not be tightened properly. As such, these vehicles fail to comply with the requirements of federal motor vehicle safety standard (fmvss) numbers 202, "head restraints," 207, "seating systems," and 225, "child restraint anchorage systems."
Air bags: occupant classification
Risk: An air bag that does not deploy during a crash increases the risk of injury.
Fix: Dealers will inspect and replace the sensor as necessary, free of charge. Interim letters notifying owners of the safety risk were mailed in february 2024. Some final remedy owner letters were mailed october 31, 2024. Letters will continue to be mailed in phases through january 2026. Owners may contact toyota customer service at 1-800-331-4331. Toyota's number for this recall is 23tb15/23ta15 lexus 23lb03/23la03.
Full defect summary
Toyota motor engineering & manufacturing (toyota) is recalling certain 2020-2021 avalon, avalon hybrid, corolla, highlander, highlander hybrid, rav4, rav4 hybrid, lexus es350, lexus rx350, lexus rx450h, 2021 sienna hybrid, lexus es250, 2020-2022 camry, camry hybrid, and es300h vehicles. A short circuit may develop in the occupant classification system (ocs) sensor, preventing the front passenger air bag from deploying.
Stability control: software
Risk: Driving with a deactivated stability control system increases the risk of a crash.
Fix: Dealers will update the skid control ecu software, free of charge. Owner notification letters were mailed may 27, 2022. Owners may contact toyota customer service at 1-800-331-4331. Toyota's number for this recall is 22ta03. Lexus' number for this recall is 22la01.
Full defect summary
Toyota engineering & manufacturing (toyota) is recalling certain 2022 lexus lx 600, lexus nx 350h, lexus nx 450h+, toytoa rav4 hybrid, 2021-2022 lexus ls 500h, toyota mirai, rav4 prime, sienna, venza, and 2020-2022 toyota highlander hybrid vehicles. The skid control ecu software may not turn on the vehicle stability control (vsc) system when the vehicle is restarted after the driver has disabled the vsc system. As such, these vehicles fail to comply with the requirements of federal motor vehicle safety standard number 126, "electronic stability control systems."
Recall repairs are free at any franchised dealer. Enter your VIN at nhtsa.gov/recalls to see which recalls are still open on your car.
NHTSA defect investigations
Pedestrian alert sounds
Summary
Nhtsa received a petition on or about july 18, 2022, requesting that federal motor vehicle safety standard (fmvss) 141 be applied to all electric and hybrid vehicles operating in the united states. The petition can be reviewed at NHTSA.gov under odi number 11486072. Fmvss 141 establishes performance requirements for pedestrian alert sounds for motor vehicles. The standard applies to hybrid and electric vehicles that have a gross vehicle weight rating of 4,536 kg or less or are defined as low-speed vehicles. The standard became fully applicable to all such vehicles manufactured on or after march 1, 2021.on january 27, 2023, NHTSA opened defect petition (dp) 22-005 to evaluate the subject matt
Questions about the 2021 Toyota Sienna Hybrid
- What are the most common problems with the 2021 Toyota Sienna Hybrid?
- By NHTSA owner complaints: air bags (13 complaints); brakes (9 complaints); visibility and wipers (5 complaints).
- How many recalls does the 2021 Toyota Sienna Hybrid have?
- 4 recalls listed by NHTSA, the latest from December 17, 2025 (equipment Adaptive/Mobility). Check your VIN at nhtsa.gov/recalls to see which ones are still open on your car.
- Is the 2021 a bad year for the Toyota Sienna Hybrid?
- It is 4th of 6 Sienna Hybrid model years by number of complaints, with 45 complaints. Complaint counts are not adjusted for how many cars were sold, so popular years collect more of them, and the newest years have had less time to.