2022 Toyota Redundant Sienna — Known Issues & Recalls

When you press the brake pedal, your car may temporarily surge forward or lose braking power for a moment before the brakes re-engage and work normally. This creates a brief delay in stopping that could make braking unpredictable. The issue may involve the brake system's ability to respond consistently when you need it.

Your brake system occasionally feels like it's slipping or losing pressure when you brake, with a sensation of free-falling before the brakes grab and stop the van. This happens randomly and has persisted for over a year despite two dealer visits, including a reprogramming of the brake actuator control module that only temporarily resolved the issue. The dealer was unable to recreate the problem during test drives and said the computer can't be reset again, leaving the issue unresolved. Diagnosing and fixing this will likely require the dealership to perform advanced brake system diagnostics and possibly replace the brake actuator assembly or related hybrid brake system components.

Your brakes occasionally lose pressure while you're slowing down to a stop, causing the vehicle to lurch forward unexpectedly before braking re-engages. This intermittent problem has happened repeatedly over several months and creates a dangerous situation where your stopping distance becomes longer than expected, nearly causing collisions. The dealership has already attempted a software update without resolving the issue.

Your vehicle lurches forward unexpectedly when you're braking and coming to a near stop, even though no warning lights appear. This has caused you to run through stop signs and nearly hit pedestrians. The problem has been noticed by multiple people driving the vehicle, but a dealership hasn't been able to reproduce it yet. The issue likely involves the brake system's ability to hold the vehicle steady at low speeds, and may require diagnostic testing or brake component inspection.

Your 2022 Toyota Sienna's brakes aren't working normally—when you press the brake pedal, the van momentarily accelerates before slowing down instead of stopping immediately. This dangerous malfunction has nearly caused multiple accidents. You've taken the vehicle to the Halifax Toyota dealership multiple times since 2022 and contacted Toyota Canada, but the issue remains undiagnosed and unrepaired despite several service visits. The dealership is now asking you to pay additional diagnostic fees for this same unresolved safety problem. Fixing this will likely require a complete brake system diagnostic and repair by the dealership, possibly including inspection of the brake control module, master cylinder, or electronic brake components.

Your brakes intermittently release and let the vehicle lurch forward for 1-2 seconds before engaging again, even though your foot remains on the brake pedal and no warning lights appear on the dashboard. This happens randomly 2-12 times daily and has been getting worse over the past year and a half, making it especially dangerous on steep hills or when approaching stopped traffic. The fix will likely involve a dealership diagnostic to identify whether the issue is in the brake hydraulic system, brake control module, or related electronic components.

Your brakes occasionally feel like they're not stopping the car as expected, even though there's no consistent pattern to when this happens. This unpredictable brake response is concerning for safety. The problem persisted even after you had a Toyota service bulletin repair performed. Your brake system may need further diagnostic work to identify why the brakes aren't responding reliably.

Your Sienna experiences unexpected sudden acceleration while braking, particularly as you approach a complete stop. The regenerative braking system appears to disengage momentarily, causing the car to lurch forward abruptly even though your foot is on the brake pedal. This has happened at least twice and could cause a collision if another vehicle is ahead of you. The issue likely requires diagnosis of the regenerative braking system and brake control electronics.

Your vehicle suddenly accelerates and lurches forward when you press the brake pedal instead of slowing down. This is a serious safety concern that requires immediate inspection and repair to prevent accidents.

When you brake, your van sometimes lurches forward slightly instead of stopping smoothly, creating an unexpected forward propulsion. This happens intermittently and can be startling, especially with children in the vehicle. A technical service bulletin (T-SB-0047-24) was already applied but didn't resolve the problem.

Your brake pedal feels like it's slipping or losing grip when you try to stop, especially on bumpy or uneven roads. This happens randomly and makes it harder to bring your car to a smooth stop. The issue may involve worn brake pads, contaminated brake fluid, or a problem with the brake system's ability to maintain pressure on rough surfaces.

What component or system failed or malfunctioned, and is it available for inspection upon request? CONSISTENT DECELERATION DURING BRAKING How was your safety or the safety of others put at risk? CONSISTENT DECELERATION CEASES FOR PERIOD OF 1-2 SECONDS Has the problem been reproduced or confirmed by a dealer or independent service center?

While driving at 40 mph on a city street, you suddenly lost all steering control and braking ability, causing your vehicle to swerve and spin uncontrollably. Your dashboard displayed multiple warning codes at once: anti-lock brakes malfunction, pre-collision system malfunction, secondary collision brake system malfunction, braking power low, and parking brake malfunction. Restarting the vehicle did not clear any of the codes. This appears to involve a complete failure of multiple safety-critical systems that requires immediate diagnosis by a qualified technician.

Pre-Collision System Malfunction, Hybrid System Malfunction, AWD System Malfunction suddenly when restarting the vehicle. Towed to Toyota of Downtown LA dealership. Toyota of Downtown LA Service tells me that the CPU on my relative new Sienna 2022 was fried from jump start when Sienna starting-battery was low.

When you apply the brakes to slow down your car, it accelerates instead of slowing down. This is a serious safety issue that needs immediate attention from a technician who can diagnose the brake and acceleration system.

Your van's hybrid battery repeatedly dies and won't hold a charge, causing the vehicle to fail to start and require multiple tows since May 2023. You're also experiencing multiple safety system malfunctions including ABS failure, seatbelt warnings, and Advanced Detection System errors, along with windshield wipers that randomly activate and won't stop. These issues have persisted across multiple repair attempts at different dealerships, suggesting a deeper electrical or battery management system problem that may require comprehensive diagnostic testing and potential hybrid battery replacement.

Water has accumulated inside the wiring harness connectors for your rear tail lights, causing them to corrode and fail on both the driver and passenger sides. You may notice your rear tail lights not working or staying on. The dealer confirmed this is a known issue on 2022 Siennas. Fixing this requires replacing the corroded wiring harness connectors on both sides.

Your Entune 3.0 infotainment system has been replaced multiple times but still isn't working properly — it automatically answers phone calls while you're driving without your input, and it interferes with hands-free phone functionality, forcing you to disable Bluetooth to prevent unwanted call handling. Your backup camera also doesn't work consistently. These issues create a safety concern since the system grabs control of calls when you need to keep your attention on the road.

When you brake while decelerating—especially on hills or in corners—your brakes occasionally feel like they release or lose effectiveness for a moment, even though you're still pressing the pedal. This sudden delay in braking feels unsafe, particularly if you're approaching another vehicle or pedestrian. Toyota has since released a software update (TSB) to address this issue, but your vehicle is out of warranty and you'll need to pay for the fix out of pocket.

seat retractor failure- white plastic part off and visible , seat is making popping noise when seat is being adjusted. Noticed this when I picked up from dealer after oil change. I feel this is a driving safety concern.