2015 Jeep Grand Cherokee: adaptive cruise control problems

Filed Jul 23, 2023 · Driver assistance, Engine · VA

Valve lifter failure at 93,000 miles. $2,700 repair. Is apparently a very common problem with the 3.6l Pentastar engine. Adaptive Cruise Control and Forward Collision warning system front sensor failed at 56,000 miles, failed again at 76,000 miles and failed a third time at 95,000 miles. First two failures were replaced under warranty, third failure happened 1 week after warranty expiration from second replacement. Cost is too expensive to repair ($3,000 for new sensor) and requires that safety feature be turned off as sensor will perceive increases in road elevation (hills) as another vehicle and apply the brakes

Filed Jul 15, 2023 · Acceleration, Brakes · MN

When setting cruise control to speed limit then pressing brake and then resume the jeep sone times accelerates to a higher speed the. Having to break again. Has been reoccurring nervous when driving and setting cruise or resuming. Have not taken it in as of yet.

Filed Dec 20, 2022 · Acceleration, Electrical · NC · fire

Cruise Control, O2 SENSOR, Fuel/Propulsion System , BATTERY, If your check engine light is not on when you take it to the service department they say its hard to detect serves needs. Come back when it comes on again. Trouble while driving when using cruise congtrol it excellerate15miles beyond speed set very scary while driving next 30 minutes smell smoke next flames and smoke coming from underneath hood, open door flames and smoke can into jeep. Causing me to hit my head tryng to watch the fire and get out the truck and getting the two kids out the back the we ran then the exploded. The 911 button inside did not work! Now we can't sleep!

Filed Jun 7, 2021 · Acceleration, Electrical · 78,000 miles · PA

The contact owns a 2015 Jeep Grand Cherokee. The contact stated while driving at various speeds, the vehicle indicated erroneously that the cruise control was activated. The contact stated that the cruise control light warning light was illuminated. Upon investigation, the contact associated the failure with the federal safety agency Campaign Number: 18V332000 (Electrical System, Vehicle Speed Control) however, the VIN was not included. The manufacturer was not informed of the failure. The failure mileage was approximately 78,000.

Filed May 20, 2020 · Electrical, Transmission · 62,000 miles · MA

Service shifter message appeared at 62,000 miles upon starting engine and shifting into any gear or turning on cruise control. Will go away after approx. 5 seconds but occurs every time the car operates. Is not showing any error codes and appears to be a recurring issue for many owners and related to wiring harness and shifter.

Filed May 22, 2019 · Acceleration · 43,600 miles · UT

Driving down an open road, suddenly the "brake now" warning starts beeping and brakes are automatically applied. This has happened several times with no vehicles, etc in front of the vehicle. Happened even after the recall was completed on it for the cruise control system.

Filed Apr 13, 2019 · Acceleration · 58,000 miles · AZ

Driving my grand cherokee on I-40 with cruise control set to 75, I entered a construction zone and applied the brakes to slow down. Instead of slowing down, the car accelerated up to about 90 MPH. I was speeding in and out of traffic like a mad person and, luckily, I managed to keep my wife and I alive. Then the brakes were on the floor, I could not disconnect the cruise control, could not shift out of gear and could not turn the car off. After a period of time, we began a slight incline and the car slowed. Then I had control for a short time when the power steering went out; it came back on after about a minute. We were towed to the nearest dealer (70 miles) and the car remained there in order for chrysler to send a team to investigate. After 4 weeks chrysler informed me that there was no problem. Tell the truth, I competely expected them to not take blame for this. This was the most frightening thing that has ever happened to me - I thought for sure that we would be killed - weaving in and out of diesel trucks and construction zone. I took out barriers and traffic cones in my effort to save us. I had serious concerns about operating this vehicle again but my thought is that chrysler probably fixed the problem without taking responsibility for it. I did discover that there is something you can do if you are in this predicament and I wish I had known about it before. If you hold in on the start button for a few seconds, the car will turn off. I had held in on the start button but, evidently, not for long enough. I hope that this message can get out to other jeep owners and that this action could save lives.

Filed Apr 12, 2019 · Acceleration, Brakes · 71,000 miles · CA

The incident occurred on or about thursday, april 10th 2019 at 12:10am. It involves the brakes of the vehicle not being able to stop the vehicle at low speeds. The entire incident was captured on a high-quality front-facing dashboard camera with audio, video, and GPS. There were no injuries. Description of the incident is as follows: while I was on the interstate 10 west freeway in redlands, ca, I maneuvered to the most right lane on the highway in preparation to approach an exit less than 1 mile away (university ave.) due to lane closures (left lanes) at the time I was on the freeway, traffic was bumper-to-bumper and very low speed. While in the most right lane and still at very low speed, I engaged the adaptive cruise control feature on the vehicle. Within around 5 seconds of engaging the adaptive cruise control, the vehicle slowed down to a stop because of the vehicle in front of mine had stopped. At that point, the cruise control feature self-disengaged as normal. Only a few seconds later, the vehicle possibly abnormally vibrated. As the vehicle continued to creep forward in traffic as normal, I applied the brakes to stop, but the vehicle would not stop or slow down. As I nearly approached colliding with the vehicle ahead of me, I engaged the parking/emergency brake with my foot, and that did not seem to slow or stop the vehicle either. A second attempt to engage the parking brake did nothing as well. Within a few seconds, the car almost slowed to a stop due to rolling friction and a slight uphill grade in that portion of the freeway. I placed the vehicle in park at this time and restarted the car. After restarting, I was able to drive and brake properly the rest of my short journey home. This entire episode is captured on my dashboard camera, and it seems others on the internet have complained about this issue as well.

Filed Sep 30, 2018 · Fuel system · 34,400 miles · NC

Vehicle unexpectedly stopped running while driving 70 MPH on an interstate. The car began to lose acceleration while in cruise control and, upon trying to accelerate again , the steering wheel began to shake very hard. The car accelerated briefly before coming to a complete stop. I was thankfully able to veer off of the interstate on to the shoulder. After repeated tries, the car would not start. All electronics appeared to work except the gear shift would not move and the engine would not start. Car was towed to closest jeep dealership who stated that code p0300 was found and that the fuel pump was no longer working.

Filed Aug 29, 2018 · Acceleration, Driver assistance · 38,000 miles · MI

Vehicle's forward collision warning (fcw) system activated a brake! Alert with no hazard present. Driver information center keeps displaying message indicating acc (active cruise control)/fcw system not available off & on. Vehicle was in motion at the time of the false alert.

Filed Jun 21, 2018 · Acceleration · WV

I've read about a recall regarding the cruise control but haven't received the notice and my dealer will not take care of the problem without it. I want it fixed so I can use my cruise control

Filed Nov 18, 2016 · Acceleration, Visibility · 25,000 miles · NY

I own a 2015 jeep grand cherokee laredo limited, purchased from a dealer new. Last week I pulled into my driveway, turned the jeep off and went to get out and my alarm system went off. Could not turn it off with either fob, I was even able to start it up and drive. Remote start would not work for 3 days. Cruise control just turns off when it wants while driving on interstate over 60 MPH. Gps states I'm off route and freezes in the location where it happened on interstate, normal weather(no overcast/fog). Wipers just start working while sitting in the driveway idling, as you're driving...no dust, rain, bugs etc...windshield leaks and rain comes in from behind the rearview mirror/sunglass holder when it rains and you have to take a sharp turn(not with normal turns)...leaks down on cell phone which sits in little cubby to charge. The vehicle surges when going under 20 MPH, usually when you are trying to start from a stop is when it' worse. Under 25k miles and I am afraid as to what might happen next.