Four problems related to mid/rear seats assembly 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.
I own a 2004 Toyota Sienna. Since 7,000 I have been in numerous times to fix the middle passenger seatbelt. It becomes twisted and unable to retract properly. It has been replaced twice and un-tangled several times by the dealership. They have taken the seat out to repair it numerous times. It has had the recall done in the past. Recently it was brought back for another seatbelt replacement due to it being tightly caught inside the seat. When the car was returned to me, the same seat no longer locked into place. It was brought back to the dealership and I have been told they will not fix it because it was caused by crumbs being in the track when the seat was put back in. I have never felt safe but a child in this seat because I never knew when the seatbelt would not retract properly. I have tried talking with the dealership about repairing the seat however they refuse. This seat is not safe.
Right now our middle row seatbelt is not retracting. I see the recall notice and am taking it in. Our other issue is this. About a year ago, when the car was only two years old but over 36,000 mile warranty, our automatic sliding side doors began to malfunction. The one on the driver's side has to be manually closed and the one on the passenger side is sluggish to respond. We thought it was a battery or alternator problem. Both were replaced. The problem remained so we took the Sienna in to the dealer. The dealer reported that both door motors would need to be replaced at a cost of over $6,000.
While lifting up the driver's side or passenger's side second row seats the seat spring jumped back forcefully and hard. Consumer drove vehicle to the dealer for inspection, and mechanic determined that the vehicle operated as designed.
Toyota Sienna 2004 - the 2nd row seats are "spring loaded" so that by pusing a lever, they will pivot forward to allow access to the 3rd row seats. The force of the spring is very strong and a child/infant could easily be injured if hit by the pivoting seat. I recommend a recall to retrofit the seats to a less powerful spring or piston type device.
| Front Seat Heater/cooler problems | |
| Mid/rear Seats Assembly problems | |
| Seats problems | |
| Front Seat Recliner problems | |
| Front Seat Power Adjust problems |