2023 Jeep Grand Cherokee L Brakes Problems

2023 Jeep Grand Cherokee Summit unexpectedly applied the brakes while traveling approximately 78 mph with Adaptive Cruise Control engaged. There was no vehicle, object, or obstruction directly ahead. The forward collision/ACC warning activated immediately before the vehicle braked. At approximately the same time, the driver had touched the power lumbar button to disengage the lumbar. The lumbar had independently activated approximately 15–20 minutes earlier. Not sure if the 2 are related or if the is just coincidental?

NHTSA ID

11762385

Incident

Sep 5, 2026

We were accelerating from a stop light and reached about 50 mph when the brakes activated and large red letters saying “BRAKE” were displayed on the drivers dash screen and an alarm sounded. The vehicle slowed rapidly and suddenly. Fortunately we were around no other traffic so there was no collision. There were no impediments on the roadway which might have reasonably caused the brakes to activate.

NHTSA ID

11758105

Incident

Aug 19, 2026

Was driving the vehicle normally, roughly 33,300 miles. All of a sudden, multiple malfunction lights came on, I believe the ABS and something else, can't remember which one. When we applied the brakes , there was no assist, we had to depress the pedal all the way down and basically stand on it to slow down and still ended up stopping partway through an intersection due to the lack of power brakes, we were extremely fortunate there was no other vehicles driving through or stopped in front of us, it could have killed us and/or other people. As the vehicle is out of warranty (by time) we looked into it ourselves and determined there were two DTCs, U0418 (invalid data, brake system control module) and P057B (Brake pedal position sensor circuit range/performance). We looked at the brake pedal and determined that a primary component of the "brake pedal simulator sensor" which is a part of the entire brake booster assembly. The retaining cup for the spring and internal components had come separated from the main body and caused the sensor to go out of range and the computer to disable power brakes entirely relying entirely on the backup hydraulic master cylinder. As this required replacement of the brake booster we decided to have it towed to the dealership to deal with. It was a few weeks before we had it towed and while it sat in the driveway the module not going to sleep resulted in both the main and aux batteries being fully drained and ruined, requiring replacement. The dealer replaced the power booster and provided the old component at our request for the purpose of filing this report in case it is requested for an investigation. The total cost was $1800. We consider this a severe safety issue and thus am filing this report with all documentation and have the part on hand if requested.

NHTSA ID

11754867

Incident

Jun 1, 2026

There have been many components and issues that were and were attempted to be repaired. The vehicle is available for any inspection needed. I am afraid to drive the vehicle. My safety, my family’s safety and everyone around us front behind it doesn’t matter everyone is at risk. The vehicle for no reason at all just stopped. A very intense and.violent stop then the automatic braking and pedestrian warnings alerts came off. The vehicle did NOT come to a slow stop it felt like we hit into a brick wall. The dealership is never able to recreate or fix anything. Doubt they even try. They don’t put much effort into trying to recreate the issue.

NHTSA ID

11732557

Incident

Mar 7, 2026

On [XXX], while driving my 2023 Jeep Grand Cherokee L on the [XXX] , at approximately 65 mph, a ring (like a washer) detached from the brake pedal. This caused the vehicle to suddenly lose braking capability. Right after I attempted to brake the vehicle on the highway, the ABS light, brake assistance light, braking distance automatic light, and traction control lights all illuminated on the dashboard, and the vehicle required immediate assistance. The brake pedal did not respond normally to pressure. I had to downshift rapidly to slow down and exit the freeway safely. Once in a safer area, I was finally able to stop the vehicle by applying a lot of pressure to the pedal. This dangerous failure put myself and other drivers at serious risk of an accident. Due to the severity of the issue, I immediately called a tow truck and had the vehicle taken to the authorized Jeep dealership in Tustin for repairs. I had previously experienced another major repair (rear axle joint binding) that took approximately 64 days when the vehicle had around 30,000 miles. The current incident occurred at approximately 52,000 miles. I reported this safety issue to Jeep Customer Service and received Reference Number [XXX]. This is a serious safety defect involving the brake system that could have caused a crash on the highway. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11727116

Incident

Mar 25, 2026

The contact owns a 2023 Jeep Grand Cherokee L. The contact stated that while driving at 60 MPH, the vehicle failed to accelerate as intended while depressing the accelerator pedal. In addition, a burnt odor was emitting from the interior of the vehicle.  No warning lights were illuminated. The contact was able to pull to the side of the vehicle. Upon inspection, the contact noticed flames were emitting from the brake caliper assembly, and the brake rotor was red on the front passenger-side tire. The contact used a giant water bottle to extinguish the flames. The contact, her mother, and her daughter were not injured.  The insurance company was contacted, and the contact requested a tow truck. However, the contact called roadside assistance. The driver, from roadside assistance, disconnected an unknown wire from the brake caliper. When the vehicle was restarted, the parking brake lever was engaged but failed to function as intended, and the ABS warning light was illuminated. The contact was able to drive very slowly and took the vehicle to a family member's residence. The contact noticed that smoke was emitting from the front driver-side tire. The contact took the vehicle to Pep Boys, where it was diagnosed that the front brake calipers failed. However, the mechanic refused to repair the vehicle. The contact called the insurance company to have the vehicle towed to the dealer, where it was diagnosed that the power brake booster was faulty, the vehicle had no brakes, the hydraulic control unit failed to build pressure, and an unknown internal leak was found. And the hydraulic brake system had a leak; the left front wheel had caught on fire, which caused damage to the left front brake caliper, the rotor pads, and the brake hose, and the rear rotors were glazed.  The contact was informed that the brake booster, ABS module, brake caliper, brake line, gaskets, front brake pads, front rotors, rear brake pads, rear rotors, and adapter plate needed to be replaced. The DTC codes the diagnostic showed were C0050-00, which i

NHTSA ID

11693418

Incident

Sep 13, 2025

Mileage

59,647 mi

On July 16, 2025, at approximately 6:10 PM, I was driving home on the highway at around 65 mph when I attempted to brake. The brake pedal went completely to the floor, and no braking occurred. At the same time, the following warning lights and messages suddenly appeared on the dashboard: - “Service Park Brake” - “Service ABS” - “Service Electronic Stability Control” - “Auto Hold Unavailable” - “4WD System Temporarily Unavailable” I was able to maneuver the vehicle into the emergency lane without colliding with other vehicles or causing a high-speed rear-end accident. The vehicle came to a gradual stop but would not restart afterward. This failure occurred without any prior warning and posed a serious risk to my safety and the safety of others on the road. I do not know how an accident was avoided, as the failure was sudden and could have resulted in a tragedy. The vehicle is a 2-year-old Jeep, with approximately 36,000 miles, and has been regularly serviced by Jeep, most recently about one month prior to the incident. After the incident, I had the vehicle inspected by a Jeep dealership, which confirmed the failure and identified a defective brake control module as the root cause. The component is available for inspection upon request.

NHTSA ID

11682081

Incident

Jul 16, 2025

My vehicle randomly throws on the parking brake while driving. I have almost been rearended because of it. In order to get the parking brake to release i have to shut off the vehicle and wait 30 seconds then when I restart it, it releases. I get a message on my dashboard when this happens that says Auto Emergency Braking (AEB) limited functionality service required. This has happened multiple times and the dealership has no clue how to fix the issue. This is a safety hazard to not only me, my unborn baby and my family, but also to others on the road because there is no warning before it sets the parking brake. I will list the most recent time this has occurred.

NHTSA ID

11665371

Incident

May 23, 2025