Warnings Problems of Toyota Sienna

Toyota Sienna owners have reported 4 problems related to warnings (under the forward collision avoidance category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Toyota Sienna based on all problems reported for the Sienna.

1 Warnings problem of the 2022 Toyota Sienna

Failure Date: 01/13/2025

What component or system failed or malfunctioned, and is it available for inspection upon request? Toyota integrated dashcam, and yes its available to review. How was your safety or the safety of others put at risk? none stop beeping has the problem been reproduced or confirmed by a dealer or independent service center? yes, was replaced once under of warranty and failed again. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? no were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? no, failed again after 30,000 miles.

See all problems of the 2022 Toyota Sienna 🔎.

2 Warnings problem of the 2024 Toyota Sienna

Failure Date: 08/27/2024

When crossing a one-way road with oncoming traffic from the left, a vehicle that has recently passed might be triggering the forward collision avoidance system which cuts off throttle control to the Sienna, even when the passed vehicle is well out of the way. It is unknown if the collision avoidance feature is being triggered as there are no warning lights or messages in the display. This results in the Sienna having no accelerator response and sitting “dead in traffic” sideways in front of oncoming cars. This this is the second time this issue has occurred and today I was nearly t-boned by on-coming vehicles as there was no throttle response to move the car forward. This issue has been reported in 4th generation Sienna (‘21-‘24) forums on facebook. This issue puts at risk vehicle occupants as well as other vehicles on the road.

See all problems of the 2024 Toyota Sienna 🔎.

3 Warnings problem of the 2021 Toyota Sienna

Failure Date: 02/06/2024

I have this car for 1 year, and I’ve have problems when I am driving and I have use the brake the car stop and keeping going forward ,I already had a accident hitting a car in front me,I’ve see a lot complain about this problems and the Toyota is not getting fixed and keeping saying that is the driver fault,I work as a driver I need this problem get fix.

See all problems of the 2021 Toyota Sienna 🔎.

4 Warnings problem of the 2021 Toyota Sienna

Failure Date: 09/04/2023

Pulling into paved parking spot on very slight uphill grade. Tried to apply brake pedal but car kept moving forward about 6ft over curb and crashed into cement wall creating slow speed impact damage to front end. Towed on flat bed to dealers lot. Tow truck driver noted brake seemed loose and had little resistance. Car still under warranty, 28. 8k mi, all warranty required maintenance has been performed to date by dealer. No prior accidents. Annunciation on screen after event saying "parking support brake malfunction visit your dealer" message has subsequently remained. Large number of same or similar annunciation messages over last 4 yrs reported on Toyota nation web site. Messages indicate that TSB-019-19 may apply and/or dtc c13b0. However, service manager at dealer has refused to investigate this and similar diagnostics to explain safety systems failure or otherwise repair under warranty agreement, unless we first sign a release for personal injury liability with Toyota legal department. Dealer has advised it is not safe to drive car in its present condition. Please note similar complaint sent a few days ago on this web site (no response so far) but there was an error in reported VIN so this is a resend.


Other Common Forward Collision Avoidance related problems of Toyota Sienna

Problem Category Number of Problems
Automatic Emergency Braking problems
21
Warnings problems
4
Adaptive Cruise Control problems
3


Safety Ratings of Sienna Cars
Fuel Economy of Sienna Vehicles
Sienna Service Bulletins
Sienna Safety Recalls
Sienna Defect Investigations