Toyota Sienna grinding brakes problems

Filed Nov 5, 2026 · DE

I pulled into a parking space in the normal way. My foot was on the brake and the car was stopped. I was preparing to shift to park when suddenly the engine started revving. It revved to such a high rate that the wheels were squealing, and then the car accelerated forward with such force that it jumped the parking bumper and traveled up a small rocky embankment despite my immediately applying all my strength to the brake pedal. Then as quickly as the car started to revved, the car stopped. I had it towed to the Toyota dealership to be fixed. They explained the that could only run a computer test and could not do a visual inspection. The computer results were “TAS said pedal misapplication….no action needed.” They added that floor mats must be secured:which they were. I spoke with the manager of the dealership and had a case file opened with Toyota. The Manager insisted they would not take any further action and the car was safe to drive. I strongly disagreed with their decision.

Filed May 8, 2026 · Transmission · IN

My Toyota sienna is a 2020, has 83,000 miles and has recently been squealing when I accelerate. I took the van to a local body shop and they said it seems to be my transmission. I called Toyota immediately and they knew that the transmissions were faulty and that they would try to work with Toyota to get it fixed. There is no way I can pay 9k for a new transmissions because they put in faulty ones.

Filed Apr 24, 2026 · NY

[XXX] [XXX] / [XXX] [XXX] 2010 Toyota Sienna Possible Shifter Interlock Failure: On [XXX] my [XXX] child found his way into the driver’s seat of our 2010 Toyota Sienna while the vehicle was parked in the driveway. According to my wife, there were no keys in the vehicle, and the vehicle was in park. In an instant, my wife (who was outside the van) helplessly observed the van begin to roll backward down the driveway and then across the sidewalk (on our side of the street), then across the street, and then across the sidewalk on the other side of the street and into the neighbor’s yard where it finally came to a rest. She said she heard something like grinding gears. I presume my son was trying to put it in park. Thankfully no property damage or personal injuries occurred during the incident. I [XXX] ) was not home when this happened. When I returned home, I inspected the van to see if my son was able activate the emergency shift lock release. I found the cover was intact and evidence of tampering was not observed. I then checked to see if I was able to pull the shifter out of park. Initially, I was unable to, but after a few tries and a little force, I was able to pull the shifter out of park (no keys in ignition, no brake compression, vehicle off) and the van began to roll. Our driveway is somewhat sloped. I replicated this procedure several times: a little force and a little wiggle and clunk, the shifter released and the van rolled. I discovered there was a recall for this very problem on 2010 Sienna’s (the federal safety agency Recall No.: 17V‑657). I entered the Sienna’s VIN number on the federal safety agency’s website and found no active recall for the VIN number entered. I contacted Toyota of North America (1‑800‑331‑4331) and chose to advocate and spoke to an agent and reported the problem. She was able to determine that the vehicle had been under the recall, but the van was “repaired” in 2020 which is the year we bought the van INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed May 11, 2022 · MO

Vehicle has a whining grinding noise, after having it serviced at Toyota Dealership, the finding has been a known issue for a few years: Rear Differential Viscous Coupling gone bad. If this is the same set up as the Toyota Rav and they issued a recall on it, What is the issue with not calling it for the Sienna's, especially when its a very known problem? Its a complete RIPOFF to the public, and something truly must be done. Thank you.

Filed Apr 19, 2022 · Transmission · 79,000 miles · IL

The contact owns a 2012 Toyota Sienna. The contact stated that the rear differential was making an abnormal whirling and grinding sound. There were no warning lights illuminated. The contact called the local dealer but the vehicle was not diagnosed or repaired. The manufacturer was notified of the failure and referred the contact to the federal safety agency. The approximate failure mileage was 79,000.

Filed Jan 23, 2022 · Brakes · FL

When vehicle is in reverse the rear breaks on passenger side start squealing and making a loud noise when applied specially when vehicle has been stopped for while however on occasion it does it every time you back up when applying break.

Filed Aug 27, 2021 · Steering, Transmission · 125,000 miles · CA

The contact owns a 2014 Toyota Sienna. The contact stated that while attempting to turn the vehicle to the left or to the right, there was a grinding sensation in the steering column. The contact stated that the vehicle felt as if it was losing traction. There was no warning light illuminated. The contact had not taken the vehicle to the dealer. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 125,000.

Filed Jul 22, 2021 · Transmission · OH

Grinding noise began from the rear of the vehicle increasing as acceleration increased. Took to the shop and found at the Rear Differential failed at 75,000 requiring replacement for thousands of dollars. The same year RAV4 has been recalled for this already - the Sienna should have a recall also. The dealership had the part on the shelf, surprise surprise.

Filed May 14, 2021 · Acceleration, Electrical · 108,000 miles · TX

Brakes have been replaced, and checked several times make a loud grinding noise in wet weather when backing up and sometimes when applying pressure while driving also a 🔊 noise and brakes seem to slip have had to pull over because it scares me can not find anything wrong but continues to persist. Both in highway driving and regular street driving

Filed Jun 9, 2020 · Transmission · 80,000 miles · RI

Rear coupler for rear differential bearings are grinding creating whirring noise and need to be replaced by dealer.