Two problems related to front seat belt have 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.
Driver's seat belt jams where it comes out of the seatbelt guide assembly causing excess slack in the seat belt so that it is inoperable. I have only been able to uncanny it once and have had to drive it to the dealership without seat belt protection to have them unjam it. They somehow yank it loose but we have only been able to do this once (today). It is starting to jam almost every time its used now and despite being very careful, it has completely jammed 5 times now. It is a 2004 Toyota Sienna limited minivan.
Driver seat belt fails to retract as the strap gets caught in the opening where it retracts. It did this on rare occasion under warranty but now does it constantly. There fore the seat belt is very loose and does not restrain the occupant. The rear belts were recalled for this type of defect and were working fine at the time of the recall. This problem has been ignored by the dealer under warranty and now they simply work it free when we bring it in, despite us telling them that it recurs daily.