2020 Toyota Sienna Other or unknown Problems
- Complaints
- 6about this part
- Share
- 16%of 38 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 6 complaints about the other or unknown of the 2020 Toyota Sienna, 16% of the 38 complaints for this model year. 1 a fire, according to the filers.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“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 they want 1000 to 2700 to remove the head liner and try to fine the problem, which what was reported didn't help. …”
NHTSA complaint #11745526, filed 2026-06“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”
NHTSA complaint #11730749, filed 2026-04“ON jUNE 3, 2021 I experienced a drastic loss in power and all warning light illuminated on the dash , was able to get of the highway to a safe area and vehicle ceased to function . This happened after the fuel pump recall was performed at Ed Morse Toyota in Delray Beach around February. It had been functioning perfectly up until this massive failure. When tow truck operator arrived and tried to start, is caught fire and was severely damaged.”
NHTSA complaint #11420552, filed 2021-06Related service bulletins
- 11028712Jan 7, 2026Some 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…
- 10252259Feb 20, 2024TSB: Some 2018 ? 2022 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…
- 10244111Aug 17, 2023TT: A very small percentage of customers experience operational difficulties with some telematics features which they cannot resolve on their own. These resources, in conjunction…
- 10220154May 13, 2022TT: To improve customer support of telematics connected services features, additional resources have been provided in the Service Lane - Knowledge Center.
Other or unknown: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2022 | 11 | 9% |
| 2021 | 29 | 18% |
| 2020 | 6 | 16% |
| 2019 | 9 | 20% |
| 2018 | 14 | 19% |
| 2017 | 27 | 17% |
| 2016 | 14 | 18% |
| 2015 | 48 | 21% |
| 2014 | 28 | 17% |
| 2013 | 33 | 18% |
| 2012 | 28 | 11% |
| 2011 | 64 | 10% |
| 2010 | 27 | 16% |
| 2009 | 37 | 18% |
| 2008 | 38 | 9% |
| 2007 | 34 | 9% |
| 2006 | 59 | 6% |
| 2005 | 58 | 5% |
| 2004 | 107 | 5% |
| 2003 | 2 | 2% |
| 2002 | 3 | 2% |
| 2001 | 8 | 4% |
| 2000 | 13 | 4% |
| 1999 | 16 | 7% |
| 1998 | 6 | 2% |
Other parts of the 2020 Toyota Sienna
8 complaintsTransmission and drivetrain
8 complaintsElectrical system
7 complaintsEngine
6 complaintsBody and structure
4 complaintsBrakes
3 complaintsSteering
3 complaintsAir bags
1 complaintsElectronic stability control
1 complaintsSeats
1 complaintsVisibility (wipers, defrost, mirrors)
1 complaintsWheels
1 complaints
← All problems reported for the 2020 Toyota Sienna
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology