2021 Toyota SiennaProblems: Top Complaints, Recalls & Failures (NHTSA)

Service Brakes

• FAILURE: Brake control system. Vehicle intermittently surges forward while braking at low speed, most often through a curve — the brakes momentarily release and the vehicle lurches before braking resu
• Car surged as brakes were applied when stopping. Very dangerous. Could have easily rear-ended another vehicle. Surge was immediate and occurred when brake was being applied. Not confirmed yet, but
• My 2021 Toyota Sienna Hybrid has an intermittent and dangerous brake failure where the brakes suddenly release pressure during normal braking. When slowing down—especially at lower speeds or approachi

Air Bags

• SRS Airbag Malfunction, visit Dealer warning
• SRS light has been showing up on the dashboard, off and on for 3 weeks. Diagnostic reader completed by the dealership states it is an airbag module malfunction of the 2nd row left passenger seat. The
• Unknown, I got the SRS Airbag system malfunction in my vehicle, I got the same error in my vehicle dashboard a few times in the past but it would go away and since yesterday I have the message in my d

Seats

• The electronic driver's seat motor and track assembly failed completely on my 2021 Toyota Sienna (VIN: [XXX]) at less than 18,000 miles. The seat is permanently seized in a fixed position. This create
• The contact owns a 2021 Toyota Sienna Hybrid. The contact stated that while the vehicle was parked, the contact observed a melted spot, almost identical on the driver’s and front passenger’s lower bac
• The contact owns a 2021 Toyota Sienna Hybrid. The contact stated that while driving at an undisclosed speed, there was an abnormal rattling sound coming from the second-row seats. The message to "Chec

Electrical System

• FAILURE: Blind spot monitor module failed due to a corroded internal electrical connector. The failure disabled both the Blind Spot Monitor (BSM) and Rear Cross-Traffic Alert (RCTA). Both remain inope
• Unexpected failure of the acceleration pedal to accelerate from a complete stop to a go at an intersection. The electric vehicle (EV) motor began accelerating up to about 3 mph than instantly had a fa
• The contact owns a 2021 Toyota Sienna Hybrid. The contact stated that the vehicle was experiencing inaccurate fuel gauge readings. The contact stated while starting the vehicle, the fuel gauge reading

Engine

• We were stopped at a stoplight. As soon as we stepped on the gas pedal, there was a loud clunk sound and plastic parts started flying out from under the car. We immediately pulled over. Oil was spilli
• The contact owned a 2021 Toyota Sienna Hybrid. The vehicle was parked in the driveway when an explosion occurred; the vehicle burned down. The contact was inside the residence when a loud noise was he
• TL* THE CONTACT OWNS A 2021 TOYOTA SIENNA HYBRID. THE CONTACT STATED WHILE ATTEMPTING TO MAKE A RIGHT TURN WITH THE ACCELERATOR PEDAL DEPRESSED, THE VEHICLE FAILED TO RESPOND. THE CONTACT STATED NO WA