2017 Chrysler Pacifica Brakes Problems

Brake booster and vacuum failing due to cracked diaphragm

The contact owns a 2017 Chrysler Pacifica. The contact stated that while driving at various speeds, there was an abnormal clanking sound coming from underneath the vehicle. There was no warning light illuminated. The vehicle was taken to a local dealer where it was diagnosed and determined that the valve gasket covers, the intake manifold gasket kit, oil filter housing, front brake pad and rotors, all the motor mounts, and the front sway bar links needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 117,000.

Brake pedal loses assist, vehicle continues rolling while pedal fully depressed. Known issue in newer Pacifica models but 2017 excluded despite same symptoms and parts.

The contact owns a 2017 Chrysler Pacifica. The contact stated that while driving at an undisclosed speed and attempting to slow the vehicle, with the brake pedal depressed all the way to the floorboard the vehicle failed to stop as intended. As a result, the contact had to go through a stop sign eventually coasting to a complete stop. No warning lights were illuminated. The vehicle was taken to an independent mechanic, who determined that the brakes had seized. The contact was also informed that the front end struts needed to be replaced. The manufacturer was not notified of the failure. The VIN was not available. The failure mileage was 140,000.

On November the 17th of 2024 this problem occurred for the third time in the past 90 days. I purchased this vehicle approximately 90 days ago so that means that has happened three times within the past 90 days. As I step on the brake pedal to stop the car accelerates and lunges forward. The first time this happened I was involved in an incident. The third time it happened took me through an intersection but I was wanting to turn left but because of the excessive acceleration lunging forward scenario I could not slow down the vehicle enough to make the left turn but continued through the intersection. After pumping on the brakes it finally stopped accelerating and I felt that I was under control then of the vehicle.

We have tried to figure out what is going on with our brakes for months now. We have changed our brakes to new brakes and took into two car repair shops. Both even after explaining to them couldn’t figure it out because it does not do it all the time. We thought it could be the brake booster or something but they don’t want to changed it if it’s not Our brakes become hard will not brake even to the point we can’t stop and slide through lights almost like we are on ice. This has happened many many times. We just recently have been reading forums to see if this is happening to anyone else and there are so many complaints! This is so scary to drive espically with teens and two little ones and winter drives. We expect a recall soon or someone will be sued asap

The Brake Booster created unsafe vehicle handling/driving . Safety was at risk as the car would not remain stopped when the brake pedal was pushed. The pedal would resist pressure and the car would move forward into instersections, cars in front of this car, and it required that I place the car in Park to stop the car. The part has been replaced and the brakes work as they should. There was a recall of the 2018-20 Chrysler Pacificas for the same reason. I read that others have experienced this Brake Booster problem with other years, excluding 2018-20. Lives of the people in the car were at risk until this was fixed. Also, it was not noted on the Chrysler computer check as a problem. I had to insist that it was happening in order to get this repaired. There has been precedence for this malfunctioning part and I request that I am reimbursed what I paid for repair, along with a recall issued. Lives are at risk!

Since owning the vehicle for over 3 years the brake shave been hissing and inconsistently engage when pressing the brake pedal. I have had several near accidents ranging from rolling into some while in a stopped position (moved vehicle to park to avoid), to almost causing major collisions on hwy do to the inability to come to a quick stop or slow. It is pure luck I have not been in an accident.

Brake system is not functioning correctly. The pedal completely depressed, car does not stop. Requires pumping brake pedal once or twice to stop vehicle. This is a concerning safety issue. Took the care fir service, no issue was found. Vehicle still not braking correctly.

I received P258B warning and further diagnosis came to know that C0021-02 and C1252-92 warnings. While applying breaks i am getting hissing noise and break pedal pushes me back where i have to apply lot of pressure to stop the vehicle. This is happening only when i press the pedals hard. I did diagnosis and noticed that the break vaccum pump fuse gone and replaced the same again it blown. Then realized that that the Vaccum pump it self is not working and the same is ordered and replaced. Now the vaccum pump issue is fixed but still the break pedals are hard and getting hissing noise while applying breaks. Now i may need to change the break booster to get this fixed.

When having to press hard on brakes my vehicle does not stop right away. I have to pump them to get my van to stop. When at a light with vehicle stopped by pressing on break the brake pedal will push back up with force and start moving forward.

Vehicle on several occasions has slowly rolled forward when at a complete stop with brake fully engaged. Brake needed to be released and depressed again to stop vehicle. Multiple incidents have occurred while being fully stopped for traffic control devices. Latest incident occurred today, January 15, 2023.

Braking is severely compromised. Hissing noises and stiff pedal. Brake booster.

The brakes were extremely hard to push and stop the vehicle. I took it to a local auto mechanic and they identified the issue as a failed brake booster. The repair shop replaced the booster and the vehicle is working correctly now. This is the 2nd time the brake booster has failed on this vehicle (1st repair was within the 1st year of ownership). It appears Chrysler is aware of this issue as it has extended the warranty for certain model years.

Brake booster issue. Makes a hissing sound when braking and almost to the point where i will hit the car in front of me. At a stop light the brake pedal will rise and car will move forward although im pushing down.

When using service brakes and trying to stop the vehicle, I have to push down on the brake pedal multiple times to get the vehicle to stop. Which caused me to almost run several red lights and stop signs. While stopped at a stop light, and my foot is on the brake pedal, the pedal goes to the floor and I have to push down on the brakes multiple times. There is also air noise when pushing down on the brake pedal.

THE BRAKES HAVE FAILED FIVE TIMES SINCE I HAVE OWNED THE VEHICLE TWICE WHILE I WAS DRIVING AND I SUSPECTED THE FORWARD CRASH CONTROL DID NOT WORK AS WELL OR IT WOULD HAVE STOPPED ME I TOOK IT TO TWO DEALERSHIPS AND NEITHER CAN TEST IT. PLUS THEY SAID THERE WAS NO CODES WHY WOULD THERE BE? THE ONE TOOK IT ON A TEST DRIVE AND SAID YEP IT DOESN'T WORK HE FOLLOWED A CAR ON THE FREEWAY. AND IT DIDN'T GO OFF. LAST WEEK IT WENT OFF??? SO I TOOK IT BACK TO A DEALER. HE SAID WELL YOU DON'T THINK IT SHOULD SAVE YOU DO YOU. I SAID YES IF I DON'T HIT THE BRAKE IN TIME. ISN'T THAT WHAT IT IS FOR. I KNOW YOU SHOULDN'T RELY ON THEM BUT IT SHOULD WORK I THINK? THEY HAVE NO TEST FOR THIS FEATURE. I THINK THAT THEY COULD FOLLOW A VEHICLE WITH A FOAM BOARD HANGING BACK LIKE AS CONSUMER REPORTS TEST IT.TWO TIMES THE VAN DIDN'T START AND TWICE IT DIDN'T STOP FOR THE CARS IN FRONT OF ME LUCKILY I WAS ABLE TO RIDE UP ALONG SIDE THEM UNTIL IT FINALLY STOPPED IT ALSO HAPPENED LAST YEAR AND I REPORTED IT TO YOU THEN.*DT*JB

IN THE PAST MONTH I HAD EXPERIENCED ON TWO OCCASIONS, (WHILE IN MOTION AND ON A CITY STREET, SPECIFICALLY ON THE CROSS STREETS OF DYSART AND CAMELBACK AND A LIGHT AT DYSART AND W. SONOMA DR.) THAT WHEN I ENGAGED THE BREAKS THE VEHICLE FAILED TO SLOW AND I FELT AS IF THE BREAKS WERE NOT WORKING AND THE VEHICLE WAS NOT GOING TO COME TO A STOP. IN THE SAME MONTH, APPROXIMATELY A WEEK AND A HALF AFTER THE LAST INCIDENT, ON DECEMBER 18TH, 2019, MY CHRYSLER, PACIFICA WAS INVOLVED IN A MOTOR VEHICLE ACCIDENT. TWO VEHICLES IN FRONT OF ME CAME TO AN IMMEDIATE STOP. I APPLIED THE BREAK BUT MY VEHICLE BEGAN SLIDING AND THE ABS SYSTEM DID NOT SEEM TO ENGAGE. THE ACCIDENT OCCURRED ON LITCHFIELD AND CAMELBACK. MY INSURANCE COMPANY IS CONDUCTING AN INVESTIGATION ON THE ACCIDENT CURRENTLY. I FEEL THAT IT IS IMPORTANT THAT I DISCLOSE THE PROBLEMS I HAD NOTICED AND WAS ULTIMATELY TOO LATE TO DISCUSS WITH CHRYSLER. I DO NOT WANT THIS ISSUE TO OCCUR TO ANYONE ELSE.

2C4RC1GG4HR[XXX] BRAKED AT A STOP LIGHT CAR STARTED HISSING AND THE BRAKE PUSHED BACK AND THE CAR STARTED TO ROLL FORWARD VACUUM BRAKE BOOSTER CHECK VALVE ISSUE CONSUMER STATED ABOUT 10 DAYS AGO I WAS DRIVING MY 2017 PACIFIC ON THE ROAD AND TRYING TO SLOW DOWN N STOP MY VEHICLE BUT AT THE END IT COULD NOT NORMAL STOP. WHEN I ENGAGED THE BRAKE PEDAL IT GAVE THE 'PRESSURE' BACK TO MY FEET AND SOUNDS LIKE 'AIR BRAKE LEAKING' IT WAS VERY DANGERS CAUSE THERE WAS A CAR IN FRONT OF MY VEHICLE. I PUSHED HARD BRAKE PEDAL TO THE FLOOR AND THE CAR SUDDENLY STOPPED. THEN I WENT TO THE PEPS BOYS REPAIRED MY CARS BRAKE PEDAL BOOSTER. WHEN I DID ONLINE RESEARCH I'M NOT THE ONLY ONE VEHICLE OWNER HAS THIS SAFETY ISSUE. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TT*DT*JB

THE PEDDLE MAKES AN AIR RELEASE NOISE, AND WILL FORCE MY FOOT UP PREVENTING ME FROM BREAKING. I COULD BE SITTING AT A LIGHT AND THE VEHICLE WILL START DRIVING FORWARD WITH MY FOOT STILL ON THE PEDDLE MAKING AN AIR PRESSURE NOISE. THIS HAPPENS EVERYWHERE I DRIVE AND HAVE TO STOP, IF I HAVE TO STOP IMMEDIATELY I HAVE TO USE MY WHOLE BODY TO PUSH THE PEDDLE DOWN MAKING A POPPING NOISE SOMETIMES HAVING TO RELEASE THE PEDDLE AND TRY BREAKING AGAIN. I'VE ALMOST HIT SEVERAL VEHICLES DUE TO NO CONTROL OF STOPPING.