While driving on highway, brakes did not respond quickly and vehicle did not slow down. I had to stand on the brake to get the car to stop. This repeated itself multiple times over the next few days and is ongoing. There is a hissing sound like there is some air system at work and the break pushes back at your feet while breaking. Called the local dealer who did not have an appointment for several weeks. Dealer claims there is no known issue. But online and there are dozens of complaints and here on the NHTSA website there are over 25 complaints about this issue.

- Jackson, NJ, USA

My brakes were hissing when pressed and started squealing. Shortly after this when I tried to stop I came inches from hitting the car in front of me. I have also noticed when this is happening the auto shut off feature is not working. My dealer can-??t even look at my car for a couple of weeks to see what may be causing the issue. I have seen reports of others having this issue as well which is a huge safety concern.

- Kill Devil Hills, NC, USA

The van's brakes failed on 8/4/21. I had my foot on the brake pedal at a stoplight behind other cars. My car moved forward. It didn't initially respond to my pressing harder and I thought I'd crash. Brakes hissed, then dropped lower to the floor. I pushed harder. The van stopped & I put on the parking brake. I had one episode a few days prior where I felt brake was slow to respond and heard hissing noise. I had the car towed to the dealer as I was afraid if the brakes failed again I would cause an accident or roll into oncoming traffic at a stoplight.

- River Ridge, LA, USA

Slowing for a red light travelling approximately 35 miles an hour. Brake pedal was depressed and suddenly lost pressure/pedal went to the floor with a hissing sound as if there was a compressed air line. Car rolled through intersection with myself and two children on board. Luckily we were not hit by oncoming cross lane traffic. Afterwards there was overtly strong brake pedal force with more air hissing, pushing foot and pedal towards driver. Release pedal and pumping the brake resumed normal pressure. In discussing with Chrysler tech this appears to be a brake booster failure due to contamination from vacuum line. Car has no CEL's or related warning indicators for brake system.

- Buford, GA, USA

When braking, the brakes will fail to engage and pumping the brakes is required to stop. When the brake is depressed at a light, the brakes will release, causing the car to start forward without pressing the gas pedal. The brake booster in ABS system is defective and on national back order. No recalls in place, but driving safety is severely compromised.

- Saint Cloud, FL, USA

there is a hissing sound and it feels as if air pressure is building up in the brake line which is pushing against my foot is on the brake pedal, allowing the vehicle to accelerate slowly when it should be stopped.

- Inkster, MI, USA

The brake booster has failed making it extremely difficult to drive and dangerous according to the local Dodge dealership these parts have been on backorder for 2 months now

- East Stroudsburg , PA, USA

Countless episodes when on slippery conditions and using regenerative braking, usually going down a hill trying to maintain speed with steady moderate break pedal pressure. When I encounter these slippery conditions the regenerative brakes rapidly decrease their force (or entirely loose braking) for about 1 second. If I am on a longer stretch of slippery conditions (packed snow, ice) then this repeats at about 1 second intervals. This has occurred at speeds ranging from 10-35 mph. If I press harder the ABS kicks in, because the occurs on steep hills, instead of maintaining speed or slowing down, the effect of gravity leads to an acceleration.

- Waterbury, VT, USA

My 2019 Chrysler Pacifica has begun shuttering at stops. The vehicle has just over 12,000 miles and is only 18 months old. I took it the dealership and was told that the pads are fine but the rotors are completely rusted and must be replaced. I was told the vehicle is no longer safe to drive long distances. Information published by Chrysler indicates that rotors should last 40,000 to 80,000 miles. This car has been kept in a garage the entire time I have owned it when it was not being driven. I think it is clear that the rotors were made of defective material. Although the dealership told me the car is no longer safe to drive long distances, yet I cannot afford to pay $1,000 out of pocket to have the rotors and pads replaced. I am reporting this so an investigation can be done into the materials Chrysler used to produce these rotors. A recall may need to be considered.

- Rochester, MI, USA

On numerous occasions the van has lost brake function. I can slowly be coming to a stop and press brakes all the way to the floor and I'm still coasting. Very scary. However today took the cake. I was leaving a steep driveway and it happened, I panicked and tried to apply the parking break but it did not help. Praise the lord a car wasnt coming bc I coasted right on into the road. We will likely have to get it in shop bc this is getting very dangerous and we have 4 kids in tow. Please recall this

- Philadelphia, TN, USA

As I was driving on a city street and applied the brakes the car suddenly stopped and completely shut off the engine and shut down. Unable to start the car after a few attempts it finally started again, went a few more feet and then completely shut down and the vehicle turned off again, in the middle of the road. The car began to smoke from the front and there was a strong smell of gas. A pedestrian came over and told me not to attempt to start the car again because there was gasoline leaking from the bottom of the car. I had my children in the car with me at the time and so we all had to hop out in a panic and I went inside a nearby coffee shop to call the police, insurance co and a towing service. As I mentioned the car was in the middle of the road, which was a danger to drivers passing by and to myself, all I could see was gasoline pouring out of the car. When the tow truck took the vehicle to a Chrysler dealership service, they informed me that the clamp from the fuel line somehow came off and this was "a one in a million chance of happening to anyone". they offered me no explanation as to why this occurred and offered me nothing to ease my worry of this happening again in the future. I would like to point out that we purchased this as a new vehicle and it was still under warranty. Nonetheless a concerning issue as this could have caused a fire or explosion with me and my 3 children in the van. Thank you for taking the time to read this, please see attachments fo the documentation from the dealership.

- Norfolk, VA, USA

I can step on the brake at a stop light and then the brakes push back at me and make a hissing sound as it happens. Then I try to push it back down and it won't allow me to and it starts to move. It has happened several times so every time is happens I just have to put the car in park until the light turns green.

- Miami, FL, USA

When driving and I press on the brakes there is a 'air ' sound and it does not brake right away. If I'm in a bit of a hill and I have the brakes pressed it will give out and start rolling back and I have to press it all the way in which makes an ugly sound and it stops after a bit. If I have to suddenly stop to not hit a child and I press on the brakes it will still go on for a while. I took it to get brakes checked and was told the brakes are good, almost new. I have four kids and this is extremely scary. I need help this has been going on for about 2 weeks. What could possibly be wrong?

- El Paso, TX, USA

The vehicle would not stop whenever I pressed the brake pedal. It felt hard and did not respond. Much like other complaints on this website, the pedal made a hissing sound whenever it came up. The power brake system is being looked at and is a common problem. A recall on this system clearly needs to occur before someone dies. Could not stop at stoplight without pumping brakes and could not stop in driveway without hitting my other vehicle entirely. Highly recommend a different vehicle until this system is recalled because of how often this occurs

- Azle, TX, USA

The power brake booster leaks, which causes the brakes to become inoperable. This despite the vehicle only being one year old. This defect has been discussed on numerous Chrysler Pacifica messaging boards and could present a serious danger to unknowing drivers. We experienced a brake failing while going approximately 40 miles per hour on a street. The brakes became extremely hard, forcing driver to put all her weight down to stop the vehicle. The vehicle is being repaired at a cost of $442, though the replacement part is on backorder and will not be received for three weeks after taking the car in for inspection.

- Pickerington, OH, USA

Purchased 2019 Chrysler Pacifica limited in July 2020 with just over 30,000 miles on it. Last week the master cylinder for the braking system started to act up. When sitting at a stop light/sign the brakes start to make a loud hissing sound and push back against my foot forcing me to push the peddle all the way to the floor with more force then should be needed. This causes the breaks to disengage and the van rolls. I am forced to put the van in park at stop lights so I will not roll into traffic or vehicles in front of me when I am supposed to be stopped. Sometimes I am on a decline or even just sitting on a straight away waiting at a stoplight/sign. This is a major safety issue as I have my kids in the vehicle 90% of the time. I am not the only person with this same issue that I have seen on the forums and NHTSA this needs to be addressed.

- Kennewick, WA, USA

Ever since I have had this car the brakes have been an issue. I can step on the brake at a stop light and then the brakes push back at me and make a hissing sound as it happens. Then I try to push it back down and it won't allow me to and it starts to move. It has happened several times so every time is happens I just have to put the car in park until the light turns green.

- Tacoma, WA, USA

The vehicle suffered from lack of brake power both at high speed and low speed. The brake pedal felt very hard (almost like it was at a hard stop) but did not go to the floor, the brake effectiveness seemed to be very low. At high speed the vehicle hardly seemed to slow, at low speed the vehicle rolled past a stop sign. Noticed a loud hissing noise from underneath the dash when pedal was pressed past a certain point. Took vehicle to dealer in fort collins - they told me the brake booster needed replacing. This was out of stock and rather surprisingly I was told I could drive the vehicle until the part arrived (expected in 7-10 days). I was very surprised that the vehicle would be released back to me with this defect. I declined saying I thought the fault was serious since it affected braking efficiency.

- Fort Collins, CO, USA

Tried stopping for a red light and brakes did not respond. I was in the right lane. Van seamed to speed up. Got into right turn lane and van slowed down but still not stopping. Hit car in front, luckily no damage to either vehicle.

- Sterling Heights, MI, USA

The contact owns a 2019 Chrysler Pacifica. The contact stated that on various occasions, the vehicle accelerated independently when the brake pedal was depressed. The failure occurred intermittently without warning. The brake pedal was disengaged and then re-engaged to stop the vehicle. The contact stated that an abnormal sound emitted from underneath the front passenger's side of the vehicle. The contact stated that several electrical features including the radio operated independently. The vehicle was taken to falls motor city (4100 state rd, cuyahoga falls, oh 44223) however, no additional assistance was provided. The manufacturer was notified of the failure and provided a case number. The failure mileage was approximately 900.

- Parma Heights, OH, USA