2023 Toyota Sienna Reliability Score & Common Problems

The contact owns a 2023 Toyota Sienna. The contact stated that while driving 65 MPH, there was a popping sound coming from the sunroof, and the contact discovered that the sunroof had shattered. Neither the dealer nor an independent mechanic was contacted. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 70,000.

The (PCS) Precollision System has been already set to LOW sensitivity, but every once in awhile when pulling in to oncoming traffic the vehicle would think there's still a car and just stalls for a few seconds (nonresponsive to acceleration pedal) leading to a dangerous occurrence where I could be hit by a vehicle because I've basically stopped in an active intersection. My vehicle is clean, so no dirt blocking the sensors, and I also own a 5th gen RAV4 without this issue.

I parked the car in the garage and my child left the passanger side sliding door open. Then, the door malfunctioned because it would not electronically close after being left open more than 80 minutes. I tried to manually close the door, but encountered resistance. Afterwards, I pushed the "power door main switch" and was able to close the door manually. Our safety was at risk because if a dangerous person or aniaml was approaching, there is no intuitive way to quickly close the door. The vehicle DID NOT provide any warning messages about the door malfunction.

The 3rd row seats in the Sienna do not stay stowed as there is no lock. This creates a very dangerous situation when braking. I just got this car a few days ago and already have issues. When I brake or go over bumps, the stowed 3rd row seat pops up a little. That's okay, until you brake. In one instance, I had to brake harder than usual during a traffic incident in front of me, and the 3rd row seats flew forward (up and out of the stowed position) and slammed into the 2nd row seats. It was loud and scary. My child was sitting in the 3rd row (split 3rd row so only one side was stowed) and the seat flying up and forward almost broke her leg as she was sitting with one leg out to the side. We even had items on top of the seat to keep the 3rd row from bouncing and popping up, but that is not a safe solution either. This is an issue reported for recent years on Toyota forums. I called Toyota to report it. I have read the owner's manual to make sure I am stowing the seats correctly. Any animals or children near a stowed 3rd row seat could be seriously injured.

In a couple of instances the latch mechanism in 2 different seats became loose during trip. In one ocassion there was an alarm while in the second ocassion we realized when removing the car seat of an infant.