One problem related to front seat power adjust has been reported for the 2018 Toyota Sienna. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2018 Toyota Sienna based on all problems reported for the 2018 Sienna.
3rd row power seats are malfunctioning and are operating while vehicle is in motion. Multiple times, and on different days, the power seats have started to close while passenger is seated and buckled in the seat. Occurred today while on the highway, at highway speed while my wife was seated in the drivers side 2 seat split. The seat started to close on its own - no one touched any button and we had been driving for over an hour. The seat put pressure on her until it stopped in a partially closed position. The seat buttons then did not work to reopen the seat back for several minutes. This would be extremely dangerous for a small child. This has happened in a similar scenario on multiple occasions and we are certain that the power seats are malfunctioning.
| Seats problems | |
| Front Seat Power Adjust problems |