2018 Jeep Grand Cherokee: adaptive cruise control problems

Filed Jun 10, 2026 · Driver assistance, Electrical · IL

The Cruise control pacing/follow option does not slow down/break and will rear end/strike any vehicle. The auto breaking does not work. The touch screen constantly cycles randomly changing map directions, radio stations, heat and air conditioning, seat heating and cooling. Puts driver at risk due to constant changes and alert sounds.

Filed Oct 13, 2025 · Acceleration, Airbags · AR

My acc/fcw light is on, I have not been in a crash. And while driving after this light came on my passenger headrest airbag broke apart. And my cruise control is out, along with traction control. My car just went haywire.

Filed Jun 11, 2025 · Electrical, Seats · FL

The 2018 grand Cherokee has issues with mother board and electrical ghosts. 1st it was headlights and dome lights. they would flicker. i had to change the front lights 2x in a year. i thought this was odd. never did this with any car before. then I was driving home from work during rush hour and it started to rain. started the wipers front and back. the back wiper started and went halfway and got stuck. what happen? the front wipers went on for several revolutions (say 10-20 ) then stopped. started again. then stopped again. the rain intensity grew. Now the -wipers would only work when turned in opposite direction (the manual 1 pass move). this happened as i was trying to get home and stuck bumper to bumper on [XXX] . on this dangerous highway in middle of now a torrential downpour the front wipers now decided it wouldn't work AT ALL. i couldn't see anything and veered off to the shoulder thank god - waiting for rain to stop and then safely proceeded home. the next day the wipers worked. no check engine or anything. this goes on for a week or so with no issue. then out of nowhere the driver seat decides it has a mind of its own and pushes me all the way to the steering column. it wouldn't return when pushing the back button. i had to drive like that for my trip and then it magically went back upon restart. i take to dealer. pump motors bad on front and back. i say not sure your correct and explain. motor changed on front. not fixed. ok we think its the BCM. changed not fixed. finally the PDM was changed and wow it worked. 2 weeks at dealer and this shows that this issue with the control module is certainly risking peoples safety. i hope Jeep does the right thing and prevents a serious catastrophic event. read on the jeep electric issues and my vehicle had a previous "corrected" recall for Electrical Cruise Control. I dont think the fireware updates or software changes fixed all the bugs. be safe out there jeep INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FO

Filed Feb 17, 2023 · Electrical, Steering · VA

The electrical system per the on-dash guide shows a voltage of 13.8 V or less than the 14.2 V and when it is less than the 14.2 V the car drives choppy, braking causes the car to jolt around even after brake work. The radiator was recently replaced and new hoses were replaced and it still has not been remedied after new brakes and new serpentine belt. The dealer did not clean all remaining radiator fluid that spilled in the bottom of the car, as the radiator had not completely been malfunctioning prior to arrival at dealer. This has probably caused some corrosion due to faulty manufacturing and use of subpar components to where this would become an issue. The air hoses continuously make noise as there is intermittent whirring. The electrical components of the car which I assume are manifested via the voltage regulator cause the adaptive cruise control/ auto stop-start to become 'unavailable' intermittently throughout driving the car. There have been recalls issued for other Jeep Grand Cherokees for the very same issues that my car is experiencing and I want this to be remedied and not at my expense.

Filed Oct 21, 2022 · Brakes, Driver assistance · 48,000 miles · WI

The contact owns a 2018 Jeep Grand Cherokee. The contact stated while driving 60 MPH, the traction control warning light illuminated. Additionally, the contact stated that the vehicle would start and shift out of park without depressing the brake pedal. The brake warning light was illuminated. The contact stated that the adaptive cruise control mode and the automatic Start/Stop feature were no longer operative. The contact received notification the federal safety agency Campaign Number: 22V426000 (Service Brakes, Hydraulic) however, the part to do the recall repair was not yet available. The vehicle was taken to the local dealer where it was diagnosed that service brake hydraulic system had failed. The vehicle was then taken to a second dealer, Bryden Jeep Ram Dodge Chrysler - Bryden Motors (548 Broad St, Beloit, WI 53511) who provided the same diagnostic result and advised the contact to not drive the vehicle as it was unsafe. The contact stated that several unknown warning lights would illuminate while driving the vehicle. The vehicle was not repaired. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the failure but provided no assistance. The failure mileage was approximately 48,000. VIN tool confirms parts not available.

Filed Dec 9, 2021 · Acceleration · FL

Afternoon 28/11/2022. On I275 North near Exit 50. Tha cruise control turned on and the car started speeding up. I almost ran into the back of a truck in Front of me. I applied the brake and the cruise control turned off. Also the radio won't stay on station and occasionally the seat heaters come on by without touching any controls.

Filed Feb 2, 2021 · Brakes, Driver assistance · 8,000 miles · OH

While using the acc function and setting forward distance at any length the problem is that when the car in front of you slows, stops,,or turns my vehicle will brake on its own. However, while braking during the mentioned operation the big problem is that the brake lights do not illuminate. I have had several close calls with someone nearly running into the back of my vehicle during the use of the adaptive cruise control (acc). This can be extremely dangerous if you are now fully aware of this problem. This should have been addressed during the acc hazardous examination phase. A very simple fix would be to install an I/p switch in the brake line at the master cylinder so that the pressure from the acc applying the brakes sends the pneumatic signal to an electrical signal that lights up the brake lights. This problem should absolutely have been caught and addressed during the design phase. I found out when I asked a service manager about it and he said the lights do not come on. He also said they know about it.

Filed Jul 14, 2020 · Brakes · 28,120 miles · KY

The owner noticed the rotors looked worn or "gouged" on the rear brakes while washing it. He took it in to replace brake pads. Mechanic discovered that the entire rear braking system was not working. The calipers were "frozen", the pads were completely gone, and rotors had extensive wear and locked into place as well. The front brake rotors showed more wear due to working overtime with lack of rear brakes. Only sign of this prior was it was not slowing down when placed on cruise control, otherwise, front brakes were braking and no sounds were being emitted. Had to replace brake pads, rotors, and brake calipers. Unsure of how long it was in this condition. Only has 28,120 miles on it.

Filed Mar 2, 2020 · Acceleration, Electrical · 29,000 miles · NC

Tl* the contact owns a 2018 jeep grand cherokee. The contact stated that the battery overcharged while the vehicle was driven. The contact was also unable to cancel the cruise control function which caused the vehicle to independently accelerate on several occasions with the check engine warning light illuminated. The vehicle was taken to five star chrysler dodge jeep ram of warner robins located at (2817 watson blvd, warner robins, ga 31088) where the vehicle was repaired under the federal safety agency campaign number: 18v332000 (electrical system, vehicle speed control). The contact stated that the failure recurred after the software update was performed. The manufacturer was notified of the failure. The failure mileage was 29,000.

Filed Oct 1, 2019 · Acceleration · 12,000 miles · IA

When using cruise control and pushing the brake to disengage the cruise control, the car slows down until my foot is removed from the brake. It then speeds forward instantly until I brake again and hit cancel for cruise control. This has happened numerous times on regular pavement going forward.

Filed Feb 5, 2019 · Acceleration, Electrical · 3,250 miles · FL · crash

Vehicle exhibited sudden unintended acceleration on two separate occasions, and caused an accident involving property damage. The vehicle, which had been on cruise control, was completely stopped in traffic for 30-45 seconds on I-95 in south carolina. The car suddenly surged forward while the driver yelled at me 'my foot is on the brake'. It subsided once, then surged ahead again, leaving skid marks and colliding with the vehicle in front of us. It then surged a third time, ploughing that car ahead, before the driver could shift the transmission into park

Filed Oct 25, 2018 · 1,300 miles · MI

Forward collision warning does not work. Dealership says the system will work correctly if the adaptive cruise control is activated. All information in the various jeep owner's manual does not specific acc activation as a requirement. Searching the internet reveals many people experience the same problem. Jeep doesn't seem interested in helping.