2021 Jeep Grand Cherokee: adaptive cruise control problems

Filed Aug 4, 2026 · Fuel system, Transmission · CT

Electronic Throttle Control warning light comes on upon starting vehicle while extended crank occurs. When starting car, the push to start feature will not turn over and continuously cranks multiple times. Issue is intermittent- never know when it will happen which makes it difficult to replicate at service center. Took car into 2 mechanics on separate occasions and finally to the Jeep dealership for service. Because issue couldn’t be duplicated- nothing was done. However, recently while driving, same extended crank pattern noise and unstable/rough propulsion occurred while driving on the highway. Same Electronic throttle control warning light came on along with the check engine light. Also cruise control and the auto On Off feature became disabled. I scheduled service with my mechanic as soon as possible and they found the stored code was related to Technical Service Bulletin 2014-004-25 REV.B. This bulletin lists the symptoms I described yet the dealership did not perform the fuel pressure Test and Replace Fuel Pressure Regulator. I called the dealership to schedule warranty service for this TBS and they gave me difficulty acknowledging the TSB was issued for my make/model/year and scheduling a service appt. I spent the last few hours reading all of the complaints on the federal safety agency for 2021 Jeep Grand Cherokee and it is alarming how many of the complaint are for this specific issue. It is dangerous for anyone on the road to be driving in a vehicle you can’t rely on to propel you forward when you press the gas or stall due to faulty fuel pressure regulator amid traffic. An investigation should be done. Furthermore, in reviewing other recalls, I found this is a recurrent issue for Jeep. It appears they’ve been various safety recalls issued for this in the past for vehicles made from 2011-2020. How they haven’t addressed it in new models is appalling. For owners of the vehicle, it’s difficult to have any leverage with dealership since it is not easy to replicate on demand.

Filed Dec 21, 2025 · Acceleration, Driver assistance · VA · crash

I was driving north on I64, and a car in front of me suddenly stopped. Cruise control was on, but when i applied the brake, my car did not stopped, and cruise control speed up, before decreasing speed. Instead of turning off, and allowing the car to slow down. I had to swerve, causing to go off on the side of the highway, and held my foot on the brake for almost a mile, along the side of the highway, before the car came to a stop

Filed Sep 30, 2025 · Acceleration · AZ

When the cruise control is activated and the set(+) button to accelerate the car continues to accelerate after the button is released. The vehicle will accelerate to 100mph or higher. I have to deactivate the cruise control to get it to stop accelerating. The vehicle is available for inspection. +Unsafe to use cruise control for fear of excessive speed. I have taken to dealer, they say it is not covered under warranty. No other inspections have been performed. There are no warning messages or other symptoms indicating a failure. The problem first appeared when I purchased the vehicle in June of 2024.

Filed Sep 9, 2024 · Brakes, Driver assistance · WA

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.

Filed Jan 8, 2024 · Acceleration · NY · crash

I was driving on a road when the car suddenly accelerated for no apparent reason. I hit the brake and nothing happened. When the car accelerated, it was like when you hit resume when you have cruise control on. I did not have cruise control on. To avoid hitting a vehicle in front of me, I went off the road to the right, hit a chain link fence and stopped in a field. The car was declared a total loss by the insurance company. Earlier that day, the car was giving me a warning to brake, when I was not near another vehicle. On other occasions before this, the car would tell me to put my hands on the steering wheel when I was gripping the steering wheel.

Filed Jun 12, 2023 · Airbags, Seat belts · PA

While driving on a major interstate going 75mph lost power steering suddenly and was unable to control the vehicle. Air alert went off stating they were not functioning. Adaptive cruise control stopped working, lane departure stopped working. Every single alert that could be alerting was going off simultaneously. Seat belts were fastened, however seat belt alarm continued going off. Very scary and unsafe situation on major highway with 2 children in my car.

Filed Oct 8, 2022 · Acceleration, Electrical · MI

Vehicle reported on instrument cluster a loss of Electronic Stability Control, Power Steering, blind spot alert, adaptive cruise control, and cruise control. We have been having electronic issues for >2 months. Previously the vehicle reported an estart fault and would randomly engage the ebrake. It would not allow disengaging the ebrake unless the car was restarted and/or hood was opened and shut. This occured while turning left at a light causing the vehicle to abruptly stop in the intersection. We have had the vehicle serviced 2 times, and now will return it for a third time for these electronics issues.

Filed Jul 20, 2022 · Electrical · MI

Twice my vehicles charging system has not charged effectively. The first time, the adaptive cruise and forward collision systems became inoperable. During a 500 mile trip at highway speeds the battery voltage did not increase over 12.8v. This caused the air conditioner to stop blowing cold air on a 90 degree day. Two days later the air-conditioning system is still not operable.

Filed Jan 26, 2022 · Driver assistance, Steering · WV

At 1321 miles Power steering went unavailable while driving, restarted car and it was still unavailable. Car now has 1700 Miles and have had the issue 7 times. Dealer can not get me in until Feb 15th, 2021. Which is unexceptionable. With no power steering other safety features are unavailable, like cruise control, lane senors and other. I’m making this claim hoping for a full recall on this issue. Many others having the same problem.

Filed Oct 4, 2021 · Acceleration, Electrical · PA

Sometimes when first started and other times while driving, the main touch screen dies and certain functionality is lost though the car is still drivable. Everything controlled by the touch screen stops (radio, cameras, heating/cooling) but blinkers do not work, front wipers turn on and can't be turned off, high beams turn on and off, and cruise control turns on and off. If this happens while driving, a message saying "SOS Call unavailable. Please visit an authorized dealer" pops up. If it happens when the engine is first started, nothing appears on the screen.