2020 TOYOTA SIENNA PROBLEMS

Common Complaints and Reliability

• 1. Transmission issues:

  • Hesitation, shaking, and rough acceleration from a stop, particularly in the lower gears
    
  • Engine stalled in traffic after full stop at a red light
    
  • Erratic shifting and acceleration
    
  • Loss of acceleration on the highway leading to engine light, traction light, and steering system light coming on
    
  • Transmission failure resulting in erratic acceleration and metal pieces breaking off inside the transmission
    

• 2. Electrical/computer issues:

  • Random behavior such as blinkers coming on, radio volume changing, and CarPlay USB shutting off and on
    
  • Speakers making ear-piercing noises
    
  • Car warning monitor indicating various malfunctions such as AWD system and brake override issues
    

• 3. Fuel system issues:

  • Fuel pump recall causing drastic loss of power and vehicle ceasing to function
    
  • Recalled fuel pump causing increased risk of crash if not repaired promptly
    
  • Fuel pump replacement not resolving issues, with vehicle continuing to have power steering failures
    

• 4. Mechanical issues:

  • Issues with the axle and fluid leakage leading to replacement of driver-side front axle assembly
    
  • Jack provided with the vehicle failing during a tire change
    
  • Tire wear on inside of tires leading to costly replacements
    

• 5. Safety concerns:

  • Passenger side rear door unlocking and opening by itself
    
  • Brake pedal being too small and difficult to locate, potentially leading to dangerous situations
    
  • All-weather floor mats causing problems with second-row seats sliding back and forth
    

• 6. Manufacturer response:

  • Delay in repair of low-pressure fuel pump despite notification being received almost a year ago
    
  • Delay in availability of parts for fuel system recall repairs
    
  • Delayed response to steering issues despite notification of the problem through a recall
    

• 7. Customer service issues:

  • Lack of assistance provided by the manufacturer for various issues
    
  • Dismissive behavior from dealership staff when addressing safety concerns and seeking a solution for a dangerous situation involving the vehicle
    
  • Lack of communication and resolution of issues from Toyota dealerships after multiple visits for the same problems