2022 Toyota Redundant Sienna Brakes Problems

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.

Your brakes occasionally release temporarily and let the vehicle lurch forward before re-engaging, making stops unpredictable and potentially dangerous—especially at low speeds under 20 mph at traffic lights, stop signs, and in parking lots. The dealer applied a software update (T-SB 0047-24) designed to smooth the transition between regenerative and hydraulic braking, but your brakes still aren't slowing the vehicle reliably. The issue may require further brake system diagnosis or additional software refinement to ensure consistent stopping power.

Your brakes intermittently lose stopping power and cause the vehicle to lurch forward during normal deceleration, typically between 15-20 mph, before braking power returns. No warning lights appear when this happens. The unpredictable nature of this issue has created unsafe situations in traffic and forced you to brake harder than necessary, which accelerates wear on your brakes and suspension. A proper brake system inspection and repair is needed to restore consistent, reliable braking performance.

Your Sienna's brakes are surging unexpectedly while you're stopping—feeling like a brief acceleration or brake release before normal braking resumes. This intermittent problem started occasionally in November 2023 but has become more frequent, now happening every 1-2 days as of early 2025. A software update at the dealership temporarily fixed it in summer 2024, but the problem has returned, and the dealership cannot replicate it now to diagnose the cause. This unpredictable brake behavior creates a safety risk during stops, as your instinctive reaction could lead to unintended acceleration or collision.

While braking at around 15 MPH there is a sudden loss of braking force that causes the car to surge forward. This happens as the car switches from regenerative braking to pad braking. It has almost caused an accident a few times for me.

When you brake at low speeds—especially coming to a stop at stop signs or red lights—your car lurches forward as if it's briefly accelerating instead of slowing down smoothly. You have to press the brake pedal harder than normal to bring the vehicle to a stop, which feels unsafe and could lead to a collision. The fix will likely involve a diagnostic scan of the braking system and may require adjustments or replacement of brake components like the master cylinder, brake proportioning valve, or electronic brake control module.

Your brake system may not be stopping your car quickly enough — it's taking an extra 5-10 meters to come to a complete stop after you press the brake pedal. This could be a serious safety issue, especially in emergency situations. You should have your braking system inspected and serviced immediately to ensure it's working properly.

Your brakes occasionally release and then re-engage while you're stopping, causing your car to lurch forward unexpectedly. This has caused you to nearly collide with other vehicles or enter intersections further than intended. The issue happens sporadically, making it unpredictable and potentially dangerous.

Your van suddenly accelerates while you're actively applying the brakes, which has happened multiple times on hills and has nearly caused you to run stop signs. This unintended acceleration with brakes engaged poses a serious safety risk, especially in busy intersections. You're concerned this brake/acceleration malfunction could cause a crash. The fix will likely require Toyota to diagnose the brake system, accelerator response mechanism, and related electronic controls.

Your brakes occasionally slip unexpectedly while stopping, feeling like you've hit ice or briefly released the pedal even though you didn't. This happens rarely and unpredictably—sometimes for just a moment, other times for a full second or more—making it impossible to reproduce on demand. While it hasn't caused a crash yet, the loss of braking control creates a serious safety risk. The issue will likely require a dealer brake system diagnostic to identify whether the problem is with the brake fluid, ABS system, or brake line components.

Your brakes are occasionally disengaging without warning while you're slowing down at lights or traffic, causing your car to lunge forward unexpectedly. You have to release and reapply the brake pedal to regain braking control, and this has happened multiple times—once nearly causing a collision. The problem occurs unpredictably, making it unsafe to drive, especially with children in the car.

Your brakes occasionally feel like they're releasing on their own when you hold them down for a few seconds, causing your car to lurch forward. You have to press the brake pedal harder to regain braking power. This happens randomly but occurs multiple times per week.

Your brakes aren't working reliably—occasionally when you press the brake pedal, the van continues moving forward as if accelerating on its own instead of stopping. This has happened at least 20 times and is becoming more frequent, which is understandably frightening. Toyota's service department hasn't been able to identify a cause during maintenance visits. Fixing this will likely require a thorough diagnostic inspection of the brake system, possibly including the brake lines, master cylinder, brake fluid, and electronic brake controls.

Your Sienna's brakes may not respond immediately when you're slowing down or turning, causing the car to drift forward instead of stopping as expected. This happens sporadically on every drive, and in one highway emergency, the brakes didn't engage when you needed them most, nearly causing loss of control. A Toyota technical service bulletin (TSB-0047-24) exists for this issue, and the dealership applied it, though you're uncertain if it fully resolved the problem. The fix involved applying a technical service update at the dealership.

Your brakes initially respond when you press the pedal, but then seem to lose effectiveness and the car continues moving or even accelerates, requiring you to slam the brakes hard to stop. This issue has happened multiple times and resulted in a crash. Toyota has inspected the vehicle and found no problems, and no warning lights have appeared, but you don't feel safe driving the car.

When you apply the brakes, your vehicle initially slows down but then feels like the brakes release or the car actually accelerates before the brakes engage again. This issue has been occurring since you purchased the vehicle and is happening more frequently. A mechanic will need to inspect your brake system, including the brake fluid, brake lines, and brake control module, to identify why the brakes are not engaging consistently.

When you press the brake pedal, your vehicle sometimes doesn't stop as expected and feels like it's accelerating instead before the brakes finally engage. This delay has been getting longer, and it happens randomly without warning lights appearing on the dashboard. The problem caused you to run a stop sign and enter a yard before the vehicle finally stopped, but a service department hasn't inspected it yet. This will likely require a brake system inspection, including the brake fluid, brake lines, and brake control module.

Your brakes occasionally lose pressure for a second while you're actively pressing the brake pedal, causing your car to lurch forward unexpectedly. This has happened multiple times, including near-misses at red lights and even at 30 MPH, creating a serious safety concern. The issue may involve your brake system's hydraulic pressure or electronic brake control components that need inspection and repair.

Your 2022 Hybrid Sienna's brakes occasionally go soft and fail to stop the vehicle for several seconds while you're trying to brake, forcing you to press extremely hard on the pedal to eventually stop—but with a much longer stopping distance than normal. This has happened about 5 times over the past year and is occurring more frequently, with 2 episodes in the past week alone. No warning lights appear when this happens, and Toyota dealerships have been unable to identify the cause during inspection. Diagnosing and repairing this issue will likely require specialized brake system testing and component inspection by a certified technician.

Your brake pedal occasionally loses pressure while you're slowing down, causing your car to lurch forward unexpectedly before the brakes re-engage. This happens intermittently over the past 6 months, often when going over bumps or potholes, and has created near-collision situations with other vehicles and pedestrians. No warning lights appear, making the problem hard to predict. The issue will likely require a brake system inspection, possibly including the brake lines, master cylinder, or brake fluid components.

When you press the brake pedal to stop, your van sometimes surges forward briefly as if the brakes temporarily stop working, making it feel like you won't stop in time. This happens randomly and unpredictably, has occurred since the van was new, and has gotten worse recently. The issue could involve inspecting the brake system for a malfunctioning component or sensor that's causing intermittent braking loss.

Your brakes are unexpectedly failing at low speeds like traffic lights or while parking. When you press the brake pedal normally, your car sometimes accelerates forward or loses braking power entirely, forcing you to slam on the brakes harder to avoid a collision. This happens randomly without any clear trigger, such as temperature changes.

When braking at highway speeds (45-65 mph), your Sienna's hybrid braking system transitions from regenerative braking to mechanical brakes, causing the vehicle to jerk forward briefly even though you're holding steady pressure on the brake pedal. This unexpected acceleration while braking has caused you to need to brake harder than normal, and you've experienced skidding on wet pavement during turns. You were involved in a low-speed crash (5-10 mph) in a parking lot where the forward collision warning did not activate and the airbags deployed. The fix would likely involve a software update to the hybrid brake control system to smooth the transition between regenerative and mechanical braking.

Your brakes occasionally feel like they suddenly release for a moment while you're braking, causing your car to lurch forward. This has happened 8-9 times, and while Toyota told you it's normal, you don't believe it is—especially since you've seen similar complaints from other owners. The issue may be related to the transition between regenerative braking and regular braking power. A mechanic will need to inspect your brake system and test the interaction between regenerative and friction braking to identify the cause.

Your brake pedal occasionally causes the car to lunge forward unexpectedly instead of slowing down smoothly—it feels like the brakes are working, then the car surges ahead. This has happened about 5 times in the first 2,000 miles, and once it pushed you into traffic, creating a dangerous situation. A technician should inspect your brake system, including the brake fluid, brake lines, and electronic brake control module, to identify what's causing these unexpected forward surges.

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.

Your brakes are intermittently slipping when you apply steady pressure at lower speeds, causing your car to lurch forward unexpectedly even though you're pressing the brake pedal and the car is slowing down. The braking then returns to normal. This unpredictable behavior could make stopping difficult in traffic or emergency situations. A mechanic will likely need to inspect your brake system, check the brake fluid condition, and possibly service or replace brake components to restore consistent stopping power.

When you brake while turning on a freeway exit ramp, your brakes sometimes briefly surge—it feels like the braking pressure cuts out momentarily before suddenly applying more firmly than expected. This happens at least a couple of times per week. The issue may be related to the brake system's anti-lock braking (ABS) or brake fluid pressure regulation, which a mechanic can diagnose and repair.

Your brake pedal periodically loses pressure for about a second when you apply the brakes, causing your van to lunge forward or briefly stop slowing down. This happens regularly—even when you're stopped and holding the brake—and it feels like the brake system is momentarily releasing pressure before reapplying it, possibly due to a computer signal issue. You should have a mechanic inspect your brake system's electronic control module and hydraulic components.

When pressing the brakes car will lunge forward. Used to happen very rarely and now it is happening sometimes multiple times a trip. Pulling in a parking space or stopping at a light and almost hitting the car in front of me because the car just lunges forward.

Your brake pedal occasionally loses braking power while going downhill or when hitting a bump during braking, then suddenly re-engages and jolts the vehicle forward. This slipping and catching sensation happens frequently and could make it harder to control your vehicle on steep grades or uneven roads.

Your van sometimes lurches forward briefly when you brake before coming to a stop, rather than stopping immediately as expected. This happens intermittently and has occurred multiple times. Your dealer has checked the system and found no issues. The repair would likely involve inspecting and potentially servicing the brake system components, including pads, rotors, or brake fluid.

Your brakes occasionally release briefly and let the car lurch forward when driving over uneven surfaces, making turns while braking, or braking downhill—happening about 5-6 times per month since purchase. The brakes resume normal operation after the brief letup, and no accidents have occurred. The issue may involve the brake system's response to uneven surfaces or the brake fluid/pressure system, and will likely require a Toyota dealer inspection and diagnostic testing.

Your Sienna sometimes lurches forward when you brake on uneven surfaces like potholes or cracked pavement, or when you apply the emergency brake hard. Toyota says this is normal because the braking system switches between electric and hydraulic braking, but you don't believe this is acceptable behavior. A mechanic would need to inspect the brake system's transition between electric and hydraulic modes to determine if this is a calibration issue or design characteristic.

Your brakes occasionally feel like they briefly stop working during low-speed braking, even though your foot remains on the pedal. The car feels like it momentarily accelerates (but actually loses deceleration) for less than a second before normal braking returns. This happens intermittently, especially on uneven pavement, gentle slopes, or when gradually slowing to a stop, and may be related to how the hybrid braking system transitions between regenerative and friction brakes.

Your brake pedal may feel like it's releasing on its own during light, prolonged braking in stop-and-go city driving when the interior is very hot and the AC is running at maximum. This causes the vehicle to unexpectedly speed up even though you haven't changed your foot pressure, increasing the risk of rear-end collisions at low speeds. The issue happens frequently in summer but not when the car is cooler or AC is at lower settings. A software adjustment to the regenerative braking system may be needed to prevent the battery from becoming overloaded when both AC and regenerative braking are operating at high demand.

Your vehicle's Rear Cross Traffic Alert, Blind Spot Monitor, and Parking Support Brake all became unavailable and displayed warning messages on your dashboard. The warnings persisted even after restarting the vehicle, though they don't appear in the alert history. This issue may be caused by dust, dirt, or mud accumulation around the rear radar sensor, possibly due to the rear bumper design allowing debris to collect there.

Your Sienna's 12-volt battery drained overnight without explanation, and after jump-starting it, multiple warning systems activated (hybrid, brakes, tire pressure, blind spot monitor, and others). Most warnings cleared after restarting the engine, but the hybrid system maintenance alert and tire pressure warning remained until the dealership reset the error codes. The dealership reported seeing the same battery drain issue on another 2022 Sienna the previous week, but couldn't explain why it's happening.

Your van unexpectedly lurches forward when you press the brake pedal, especially while turning or parking. This has happened repeatedly since you bought it. The dealer says this is normal for hybrid vehicles because the battery charges during braking, but you're concerned this is a safety issue since the van moves forward when you're trying to stop it.

After receiving a software recall fix, your car's emergency braking system has activated twice unexpectedly in low-risk situations — once when leaving a parking lot and again when backing into your driveway as another car passed nearby. Both times the system engaged even though there was no immediate collision threat, leaving your vehicle partially in traffic. The issue appears to be related to the recent software update and may require recalibration or further software adjustment of the forward collision avoidance and backup prevention systems.

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?

Experienced it a number of times intermittently. When making a stop from about 25-30 MPH, just before making a full stop (~10mph) while foot on the break, the vehicle lunge for a split second. The feeling of loss of braking power.

brakes release upon slowing to a stop, causing vehicle to surge forward. Software update will fix it, but dealership/toyota will not cover the cost to do so.

The contact owns a 2022 Toyota Sienna. The contact stated while driving approximately 40 MPH and slowing to stop at a traffic sign, the brake pedal was depressed and there was no resistance from the brake pedal. The contact depressed the brake pedal with force to bring the vehicle to a stop.

2022 Toyota Sienna - sudden acceleration or lunging when braking on right turns.