One problem related to front seat belt buckle assembly has been reported for the 2004 Toyota Sienna. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Toyota Sienna based on all problems reported for the 2004 Sienna.
: the contact stated the front driver seatbelt buckle did not stay latched. The release button on the seatbelt was depressed a couple times, and then the buckle latched. After this incident, the seatbelt no longer stayed latched at all. There was an audible click when the buckle was forcefully latched into place. Also, the contact stated that there was difficulties releasing the buckle after the first incident. The buckle was free of dirt and other contaminants. There were no pictures of repair invoices available. The dealer was contacted, who determined that the component was not under any recall.
| Seat Belt problems | |
| Rear Seat Belt problems | |
| Front Seat Belt Retractor problems | |
| Front Seat Belt problems | |
| Front Seat Belt Buckle Assembly problems | |
| Front Seat Belt Webbing problems |