Notes: Toyota says the 2015 Sienna has been redesigned with "more swagger." Let's hope it's also been redesigned with less seat noise.


fairly significant
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
8,929 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2015 Toyota Sienna brakes problems

brakes problem

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2015 Toyota Sienna Owner Comments

problem #4

Jan 062017


  • 12,000 miles


Vehicle was in reverse backing out of an inclined driveway into a culdasac. The brakes would not engage to stop the car. The dealership towed the car and examined it. They said their were 8 codes that were showing. The dealership spent a day examining the car. They told us they found nothing wrong. They gave us no paperwork detailing what the codes were or what they had done to check the car. They said the car was safe to drive.

- Lexington, SC, USA

problem #3

Aug 282016


  • 19,300 miles
When braking at speed exiting highway, brakes began vibrating. The siena has 19,300 miles on it. I took it to the dealer and was told the front rotors were warped. The car has not been subjected to extreme driving conditions and a warped rotors may not have been noticed by others. But the rotor after warping would invariably lead to cracked rotor or brake failure at some point and pose a hazard, possibly catastrophic failure and damage or injury. Luckily, I caught it before something serious happened. I think Toyota should look into premature failures.

- Midwest City, OK, USA

problem #2

Sep 032015


  • 2,615 miles
When pulling into a parking space, the care reved and lunged forward, approximately 5 feet while the foot was on the brake. Happened twice, when turning right into parking space. Called dealer about incident and then took van into dealer next day. They contact Toyota (case #152470163). Toyota informed dealer that this was not that uncommon with Sienna vans. If someone had been in front of the vehicle at the time of the first incident they would have been injured. If I had been parking in my garage I would have damaged the house. Toyota indicate there was not a repair and that one was not needed and told dealer to release the vehicle to customer (quote). The dealer thought it was the computer and that it reved the motor automatically due to using ac. We do not understand why a computer can not be programmed to make sure this does not happen - we no longer feel safe in the vehicle.

- Little Rock, AR, USA

problem #1

Jul 222015


  • 1,800 miles
While driving on the nys thruway with the cruise control activated my van came to an abrupt stop on the thruway. There were no vehicles in close proximity to my van that would have activated the radar cruise or the autonomous emergency braking system. After the abrupt stop all the lights on the dash were lit up ie: Brake, ABS, pcs, slip indicator light, and master warning light. When I reached my destination I was unable to open the doors of my vehicle. Someone tried to open the doors from the outside of the vehicle and they were unable to open them as well. I brought it to the local Toyota dealer and they could find nothing wrong. The above lights have lit up on several occasions however the dealer could find nothing wrong. There has been a previous complaint for the same behavior on 6/6/15 reported to Toyota for the same make and model as mine a Toyota Sienna premium and they have not been able to get Toyota to act on it.

- Albany, NY, USA

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