Adaptive Cruise Control Problems of Toyota Sienna

Toyota Sienna owners have reported 3 problems related to adaptive cruise control (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 Adaptive Cruise Control problem of the 2022 Toyota Sienna

Failure Date: 09/14/2024

When engaging the cruise control, the vehicle continued to accelerate even after I let off the button. During a trip with this vehicle on September 14, 2024, this vehicle did this twice. I have never driven another vehicle where this occurs. If this is supposed to be a "feature", it's unsafe and should not be legal. If it remains legal, there should at least be some kind of safety sticker.

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2 Adaptive Cruise Control problem of the 2021 Toyota Sienna

Failure Date: 02/05/2024

I believe the computer caused the problem. The car is available for inspection as personnel at gettel Toyota in punta gorda claimed they couldn't touch the computer and have done nothing. Purchased Sienna in August 2021. In October at about 5:30 a. M. We were in the far left lane on a PA interstate, traffic came to a stop for construction. A delivery truck in front of us rolled backward a bit. When traffic started up again, our car would not go forward, only reverse. We tried "drive"--nothing--only had reverse. Finally, with cars whizzing around us, shut the engine off. Upon restarting, all gears were restored and we continued on to boston. We were shaken by this event. Since then, we have had numerous incidents of the car not moving when I put it (mainly) into reverse. I had to shut the engine off--restart--and it went into gear. Latest incidents--first week February 2024--I pulled into a parking space at englewood hospital. After visiting my husband, came out, started the car, put it into reverse--nothing. Shut the car off--restarted it, and it was ok. Ten minutes later, I pulled off onto the shoulder to take a call from one of his doctors and--no gears. Shut off the engine, restarted it and it was ok. I'm worried I'll stop for a traffic light on one of our 4 or 6 lane streets and get hit because our car won't go into gear.

See all problems of the 2021 Toyota Sienna 🔎.

3 Adaptive Cruise Control problem of the 2021 Toyota Sienna

Failure Date: 04/01/2022

When I apply brakes sometimes the brake is released and I need to push the paddle hard to engage the brake again. Same thing happens sometimes on adaptive cruise control. It sometimes release the brake and I need to push the paddle to engage the brake.


Other Common Forward Collision Avoidance related problems of Toyota Sienna

Problem Category Number of Problems
Automatic Emergency Braking problems
20
Warnings problems
3
Adaptive Cruise Control problems
3


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