Table 1 shows one common structure related problems of the 2021 Toyota Sienna.
| Problem Category | Number of Problems |
|---|---|
| Body problems |
I purchased a 2021 Toyota Sienna from united access mobility in sacramento. The vehicle was sold and delivered with multiple serious pre-existing safety defects. The exhaust system was unsafe. The catalytic converter had been stolen prior to sale and replaced with a non-oem catalytic converter that was improperly welded and mounted too low. This caused exhaust leaks, loud exhaust noise, poor acceleration, and safety concerns including potential exhaust exposure. Multiple professional repair facilities confirmed the exhaust system defect. The electrical system was defective. The vehicle was sold with the wrong size battery that was not properly secured. This caused electrical instability, warning lights, and vehicle failure. The battery was not adequately supporting the vehicle’s electrical system. The airbag and restraint system showed warnings caused by third-party wiring, indicating potential airbag or seatbelt malfunction. The fuel system was defective. The gas cap was broken and required tools to refuel the vehicle. Structural and body components were unsafe. A bumper bracket was loose and flapped while driving, and the passenger seat was unstable. Accessibility systems were also defective, including lift and door malfunctions affecting safe operation. United access was notified immediately but did not correct these safety defects. Instead, they attempted to have the vehicle repaired using an extended warranty for pre-existing conditions. The vehicle was not safe to operate at the time of sale.
When stop at the stop sign and step in the brake. . . The car momentary accelerates by its self. Its very dangerous. Pls fix the problems Toyota.
Simalar issue to Toyota t-sb-0121-20 December 14, 2020 sloshing or splashing noise caused by water inside doors the lower door seals are to tightly fitted and obstruct the door drainage holes. Debris builds up inside the drainage hole. In hard rain or car wash the door fills full of water causing potential for corrosion and damage to electrical components inside door.
The driver’s side door mirror shakes when going down the road. The image in the mirror becomes shaky. The passenger side is fine, this is only on the driver side. I have brought this into the dealer, but they said it is normal. In 30+ years of driving cars, I have never had a car mirror do this.
I went on a trip to missouri to visit my son and family. When going through st. Louis on 5/18/2022 I ran through a thunderstorm with a lot of rain. After I stopped, I noticed a puddle of water between the front seats. I could not find out where it came from. Later that same day I went through another storm. Again I found a puddle of water between the seats. This is a vehicle that was modified by vmi into a handicapped accessible van. Water coming in is concerning due to all the electrical components that could be shorted out. I don't want to find out later that there is rust damage nor damage to the electrical systems because of water entering the vehicle.
Both side power doors become inoperable if they sit open for more than a few moments. They do not close by switch, key fob, or by pushing. Starting vehicle does not activate or reset. Doors must physically be forced closed. It takes considerable force to close the door. Two complaints to dealer were ignored or Toyota dealer claims this is an intentional design. But has no rational reason for the defect being a design feature. This is a danger to people unable to physically close the door and presents a security flaw for users.