2021 Jeep Grand Cherokee service brakes problems

“Suspected Right-Rear Brake Caliper Failure Resulting in Sudden Vehicle Stop Vehicle: 2021 Jeep Grand Cherokee Overland 4x4 Incident date: [XXX] Location: Honolulu, Hawaii Approximate mileage: 64,000 miles Affected component: Right-rear brake caliper assembly On [XXX], while traveling approximately 5 mph, my 2021 Jeep Grand Cherokee experienced a sudden, violent mechanical jolt. The vehicle abruptly stopped, jerking forward and backward with substantial force. When I attempted to accelerate again, the vehicle felt physically restrained, as though something was preventing the wheel from rotating. The vehicle would not drive forward normally, and the AutoPark system engaged under certain conditions. After exiting the vehicle, I discovered a large bolt marked with an “M” lying in the roadway. I initially did not realize it belonged to my vehicle. The responding tow truck operator later identified the bolt as associated with the right-rear brake assembly. During his inspection, the tow truck operator discovered that the right-rear brake caliper was displaced and movable near the wheel. He repositioned the assembly sufficiently to facilitate towing the vehicle to…”

“For my 2021 Jeep Grand Cherokee, the Antilock braking system, Hydraulic control unit has failed. It is currently being repaired by the dealership, and I will request the old part so that it is available for inspection. The failure of the ABS control unit, disabled the electronic stability control, the forward collision warning system and the cruise control - and the issue appears to be directly equivalent to the current Stellantis recall for Ram 1500's of a similar year. The dealer was able to reproduce the error - and was inspected at a Jeep dealership.”

“Vehicle shuts down puts itself in park and applies the parking brake and states that the hood is not closed when it is and has not been opened. It also disable the auto stop/start . It does this at traffic lights or when ever a vehicle comes to a stop creating a potential rear end collision due to having to manually restart the vehicle, disengage the parking brake and put the vehicle in drive.”

“[XXX] just south of Grapevine, CA, is a 4-lane freeway, speed limit 70 mph. It is quite steep, perhaps 4 or 5 %. It is very heavily traveled, and is used by a large number of 18-wheelers. It has a slow lane on the far right, for trucks and cars pulling trailers. I was in the #1 lane, traveling at 70 mph. About 5 miles south of Grapevine, CA, the car completely lost control of the steering. I came within inches of impacting the guard rail, and hitting a large tractor-trailer. By braking gently, and making greatly exaggerated steering inputs, I was able to maneuver to the slow lane, and, driving at less than 15 mph, was able to get to a truck stop parking lot, where the car was towed to a Jeep dealer. This is the third catastrophic safety failure this car has suffered. The first was explosion of the front transfer case, scattering transmission parts all over the road, the second was the failure of the left front axle boot. which spread grease onto the brake disc. Fortunately, both of these problems occurred at very low speed, so accidents were avoided. This last failure almost killed me, my wife, and my little dog.”

“Upon parking my car in my driveway (which has a slight slope), I put it in park and turned it off. I then opened my door and got out. Before I could close the door my car began to roll backwards and I had to jump back in the car to stop it very quickly. The door was open and got caught on the cement wall that lines my driveway as it rolled back. There is damage to the door and it will likely need to be completely replaced. The next morning I had my friend come over to follow me to a body shop to assess the damage. I reversed my car to the end of my driveway and got out to close the garage door. The same thing happened again right when I stepped out of the car, and I again had to jump back in very quickly to stop it from rolling into the street. I then had it towed to the nearest dealer (on 1/15), where they replaced the vacuum pump because the service stability control light was on. They claim to have tested it on a slope and could not replicate the problem. They checked it out and could not find anything wrong with the transmission either. I got my car back on 1/22 (with the door still needing to be fixed) and this happened again on 1/23. I pulled into my…”

“In 2022 I attempted to back into a parallel parking space and the emergency braking system kept activating to prevent backing up. Attempted getting corrected at dealer but no trouble codes available. Was driving, slowing down to stop at about 22mph, emergency braking system kicked in, shifted into auto stick, switched back reactivated normal drive. Six months later, was at a stop sign, on green light, turned left from left lane, accelerating to approximately 25mph, suddenly emergency braking activated again, again had to use auto stick to kick out of emergency braking. Luckily car behind me was not tail gating. end of message 04:56-Fri-01/05/24”