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10.0

really awful
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
0 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.

2021 Toyota Sienna body / paint problems

body / paint problem

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2021 Toyota Sienna Owner Comments

problem #4

May 132023

Sienna

  • miles

A D V E R T I S E M E N T S

Simalar issue to Toyota T-SB-0121-20 December 14, 2020 Sloshing or Splashing Noise Caused by Water Inside Doors The lower door seals are to tightly fitted and obstruct the door drainage holes. Debris builds up inside the drainage hole. In hard rain or car wash the door fills full of water causing potential for corrosion and damage to electrical components inside door.

- Ballwin, MO, USA

problem #3

May 182022

Sienna

  • miles
I went on a trip to Missouri to visit my son and family. When going through St. Louis on 5/18/2022 I ran through a thunderstorm with a lot of rain. After I stopped, I noticed a puddle of water between the front seats. I could not find out where it came from. Later that same day I went through another storm. Again I found a puddle of water between the seats. This is a vehicle that was modified by VMI into a handicapped accessible van. Water coming in is concerning due to all the electrical components that could be shorted out. I don't want to find out later that there is rust damage nor damage to the electrical systems because of water entering the vehicle.

- North Canton, OH, USA

problem #2

Jan 252022

Sienna

  • miles
While driving during snowy weather suddenly smoke began to billow from steering column area and vehicle slowed down, then stopped, while simultaneously several malfunction indicators lit, I tried to restart the vehicle to pull to a berm, it was unable to restart or even shift into neutral, the vehicle lost all power and had to be towed. This alone could have caused an injury or accident. The problem was from an electrical short from a hole in the firewall made by VMI which permitted snow, road water, and road salt to enter into the cabin area of the vehicle which shorted out the Hybrid ECU circuit board. It also caused electrical arcing to the aluminum cover of the NiMH hybrid battery which had been relocated by VMI to underneath the drivers and passenger seats and can produce electrical shocks of 800 volts or more (the aluminum alone conducts electricity), this alone could have caused injury or death. Furthermore, several relays were shorted-out, the smart key computer. There were burn, arc and water marks on many components noticed. The vehicle has been undriveable and cumulatively in a repair garage for 43 days as of date of this report

- Kirtland, OH, USA

problem #1

Jan 042021

Sienna

  • miles
Both side power doors become inoperable if they sit open for more than a few moments. They do not close by switch, key fob, or by pushing. Starting vehicle does not activate or reset. Doors must physically be forced closed. It takes considerable force to close the door. Two complaints to dealer were ignored or Toyota Dealer claims this is an intentional design. But has no rational reason for the defect being a design feature. This is a danger to people unable to physically close the door and presents a security flaw for users.

- Orchard Park , NY, USA

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