2020 Toyota Sienna problems, complaints & recalls
Most-reported problem areas: Power Train (8) · Structure:body (4) · Fuel/Propulsion System (4)
🧭 Reliability snapshot
Compared against other Toyota Sienna model years — complaint volume vs the model's median year, recalls and severity. How we score →
Safety recalls (2)
Fuel System, Gasoline:delivery:fuel Pump 2020-11-04 · campaign 20V682000 · 1,525,742 vehicles
Defect: Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2018-2019 4Runner, 2019-2020 Avalon, 2019 Corolla Hatchback, 2017-2019 Highlander, 2018-2020 Camry, 2020 Corolla, 2018-2019 Land Cruiser, 2017-2020 Tacoma, 2019-2020 RAV4, 2019-2020 Sequoia, 2017-2020 Sienna, 2019-2020 Tundra, 2018-2020 Lexus ES350, 2017 Lexus GS200t, 2017-2019 Lexus GS350, 2019 Lexus GS300, 2018-2020 Lexus LC500h, 2019-2020 Lexus LS500, 2018-2019 Lexus GX460, 2017 Lexus IS200t, 2019 Lexus IS300, 2019 Lexus I
Risk: If the fuel pump fails, the engine can stall while driving, increasing the risk of a crash.
Fix: Toyota will notify owners, and dealers will replace the fuel pump assembly with an improved one, free of charge. Owners of specific models were notified that remedy parts were available starting January 21, 2021. Owners of other models will be notified as remedy parts become available. Remedy parts should be available for all affected vehicles by late March 2021. Owners may contact Toyota customer service at 1-888-270-9371 or Lexus customer service at 1-800-255-3987. Note: This recall is an
Steering 2019-07-16 · campaign 19V532000 · 595 vehicles
Defect: Braun Corporation (Braun) is recalling certain modified 2017-2020 Toyota Sienna vehicles. The steering shaft extensions may have been improperly manufactured, possibly causing the extensions to fracture.
Risk: If the steering shaft extension completely fractures, it can cause a loss of steering, increasing the risk of a crash.
Fix: Braun has notified owners, and dealers will replace the steering shaft extensions, free of charge. The recall began July 25, 2019. Owners may contact Braun customer service at 1-800-488-0359.
Service bulletins (153)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Electrical System 2026-01-30 · T-SB-0106-22 Rev2 · Service Bulletin/Repair Instructions
obsolete notice january 30, 2026: this bulletin is now obsolete. please see t-sb-0001-26.
Electrical System 2026-01-28 · T-SB-0001-26 · Service Bulletin/Repair Instructions
some 2018 – 2024 model year toyota vehicles equipped with a premium audio with dynamic navigation system require a special service tool (sst) usb flash drive to update the map, points of interest, and system software.
Unknown Or Other 2026-01-07 · T-SB-0055-24 Rev2 · Service Bulletin/Repair Instructions
some 2005 – 2026 toyota vehicles that have undergone water intrusion may exhibit a condition in which a musty odor is present. follow the procedures in this bulletin to remediate the odor and address this condition. the purpose of this service bulletin is to provide general guidelines and procedures
Electrical System 2025-06-13 · T-SB-0058-23 Rev1 · Service Campaign
the air conditioning dye injection tool kit has been developed to aid in identifying the location of air conditioning refrigerant leaks. the procedures outlined in this service bulletin aid in locating, inspecting, and repairing refrigerant leaks.
Electrical System 2025-04-02 · T-TT-0780-25 · Service Bulletin/Repair Instructions
to assist with the early detection and early resolution of audio related concerns you may be asked to recover mmr data from the head unit. the following steps are instructions on how to retrieve the data from the system and are only to be used when requested by fts and/or fpe.
Electrical System 2025-04-02 · T-TT-0780-25 · Service Bulletin/Repair Instructions
to assist with the early detection and early resolution of audio related concerns you may be asked to recover mmr data from the head unit. the following steps are instructions on how to retrieve the data from the system and are only to be used when requested by fts and/or fpe.
Showing the 6 most recent of 153 bulletins. Search all of them free at nhtsa.gov.
What owners report
2026-08-31 · Structure:body“power sliding door on driver side cable snapped. after closing door and trying to use the door without power unable to open or close the door at all. passengers forced to use alternate door for exit of vehicle. …”
2026-08-25 · Electrical System:instrument Panel:speedometer/Odometer · 288,044 mi“odometer fraud. the contact purchased a 2020 toyota sienna. the contact discovered that there was a mileage discrepancy after the purchase. the vehicle was a private sale. at the time of purchase, the vehicle mileage was 88,044. it was later discovered upon checking with the local dmv that the mileage was 288,044. …”
2026-06-21 · Unknown Or Other“we had our van parked on a driveway with a front facing slope, we had hard rains went we where going away there was water coming out of the seat belt on the passenger side and the panel above the window was stained down to the window support where the air bag is. i've been reading reports as far back as 2008 we have a 2020, went taken to the dealer…”
2026-05-08 · Power Train“my toyota sienna is a 2020, has 83,000 miles and has recently been squealing when i accelerate. i took the van to a local body shop and they said it seems to be my transmission. i called toyota immediately and they knew that the transmissions were faulty and that they would try to work with toyota to get it fixed. there is no way i can pay 9k for a…”
2026-04-26 · Power Train“the vehicle is a 2020 toyota sienna. while driving, the engine suddenly shut off without warning, creating a dangerous situation and loss of power. this occurred while transporting children, increasing the safety risk. a mechanic inspected the vehicle and diagnosed a failure of the low-pressure fuel pump. the problem appears intermittently — som…”
2026-04-13 · Unknown Or Other“cable broke on sliding door and unable to open or access cabin on that side. turned off power to door and still unable to force door open making it difficult to unlatch car seat on that side. safety hazard in accident or rollover …”
2025-10-14 · Structure:body“the power sliding door assembly failed, and the driver side rear sliding door was bound shut, and could not be opened. disabling the power door system did not resolve the issue. the cable for the power door mechanism was hanging below the rear vent windows; but for some reason the door still would not open. i ultimately with a lot of gentle forc…”
2025-08-17 · Power Train“"i've owned the vehicle for five years, and recently i started hearing a whining noise coming from the transmission. after doing some research, i discovered that i'm not alone in experiencing this issue. the dealer told me that the transmission itself is the problem and recommended replacing the entire transmission. however, a second opinion sugges…”
2025-08-12 · Power Train“a catastrophic failed automatic transmission; ua80e of toyota sienna 2020 at 85,000 miles. it occurred while i've been driving downhill. no warning lights, not overheating, no diagnostic odb code, no other indications prior to the failure. failure created a substantial safety risk for myself, my four passengers and other road users. sudden loss o…”
2025-07-08 · Visibility:rearview Mirrors/Devices:exterior“in august of 2024, we noticed the drivers side rear view mirror had come loose from it's external housing and was only tethered by wiring that was for mirror movement, defrosting and blind spot awareness. in order for it to be safe to use, we had to duct tape it so that it would not move. unfortunately, the mirror continues to loosen and has to be…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.