2018 Chrysler Pacifica: adaptive cruise control problems

Filed Aug 24, 2025 · Driver assistance, Electrical · GA

Electrical adaptive, cruise control, forward collision warning, and shifter all malfunctioned. It is available for inspection. There was failure to accelerate at an intersection which almost caused vehicle to be rear ended. The error codes have been pulled and shown by O’Reillys auto parts. The vehicle is pending inspection by an independent mechanic. The adaptive cruise control the Ford collision, warning and service shifter warning lamps all appeared shortly before this problem occurred.

Filed Feb 13, 2023 · Driver assistance, Electrical · MD

Car was on cruise control. While approaching traffic, attempt was made to release cruise control by braking. Brake system was locked, vehicle started accelerating and revving. Brakes would not work, had to swerve to avoid collision. Managed to fidget with the gear knob. Finally managed to gain control of vehicle. I figured I gained control because I must have shifted the gear into Neutral somehow. I had my entire family of SIX in the car. Without having gained control, the vehicle would have accelerated until I crashed it. It accelerated past 80mph before I could gain control

Filed Sep 12, 2022 · Acceleration, Driver assistance · CA

Sept. 12, 2022 - Ever since we have owned this vehicle, we have experienced this issue with the cruise control. Speed increases while driving downhill highways and sometimes on pretty level highways. When I decrease the speed on the controller, it sometimes maintains the speed for several seconds (slow to respond) in order to slow down while coming up behind another vehicle. I therefore need to break or turn off the cruise control. Very unpredictable. Also, speed changes a lot which sounds like shifting gears back and forth while going uphill. I had contacted the dealer originally and was told this is normal. This is ongoing. Happens every time when driving on the highway. Safety concern. The other issue we had experienced while driving on a city street, we got some odd sounds, what sounded like it was coming for the transmission. Like shifting sounds. and on another couple of occasions, we got a kind of (clunk) noise. Not sure…hard to explain. Only happened a few times over the last several months. and was brief. This in not ongoing, but a concern for failure and or safety. No warning lamps or messages

Filed Aug 29, 2022 · Fuel system, Steering · TX

There are multiple things but here are a few i thought my wife was crazy until i started to drive it. 1. The steering feels like it gets stuck its not Major but it is a slight tug and it does it at random. 2. The trunk opens own its own (it has done this 2 times while i was driving) my wife says it has happened to her 1 other time as well. 3. The sliding doors will open and close on freely like something is caught in the track however the tracks are clean and it will bounce open close. 4. The Gas pedal sticks not engaged but when you press the gas nothing will happen then all of the sudden the RPMs will skyrocket 5. Cruise control works great if your on a flat road but if you get on a slight hill your either getting all the RPMs or it turns it off 6. The Auto Stop start thing stopped working and the light stays on but that's fine I didn't like the stop start thing anyway. 7. I did change a battery and it helped with the dash lights not looking like a Christmas program 8. the AC went out after the car had one of the RPM fits then the AC stopped. how does that make sense 9. overall i think the car is having some type of electrical issue or it has a mind of its own. Ive gone to mechanics and they all just do the same shoulder shrug. i have a appointment with a dealership but they are so back logged its disappointing.

Filed Sep 18, 2020 · Acceleration · 69,800 miles · TN

On even minor declines, the van gains speed well past acceptable limits while cruise control is engaged. I have had to brake to disengage the cruise control when it passes 10 MPH over the set speed. My 2011 chrysler town & country did not have this problem, so not sure why a newer model vehicle does. It does not explicitly accelerate but it does not brake to maintain cruising speeds on even slightly graded downhill slopes. The longer the slope, the worse the effect.

Filed Aug 17, 2019 · Acceleration · 40,500 miles · VA

I've had it happen twice now where the cruise control was set to around 64 MPH, and when going downhill, the transmission down shifted. However, the car then accelerated beyond 70 MPH both times, and didn't let go of the accelerator until I turned the cruise control off.

Filed Jul 12, 2019 · Driver assistance · 85 miles · NC

We have rented a chrysler car for 1 day from budget rentals to take us from raleigh, nc to dulles airport, va. We drove the car to dc. We did setup the cruise control on 76 speed in 70 MPH zone. The police stopped us on the I-95 in va and gave us a speeding ticket, according to him, we are driving in 86 MPH. We did not realize the speed because not too many cars around, driving around 3am. We were so surprised about that ticket and how could this even happen. We thought that we were mistakenly reading the odometer readings. We received the ticket with reckless driving of 86/70 MPH. We took deep breath and started driving again. We said ok let's setup the cruise control this time to 75 and watch it carefully. Within less than 20 seconds from setting up the cruise control, another police stopped us with speed of 85/70 MPH, reckless driving. We had no idea what is going on. The two tickets were about 5 miles apart on the I-95, va. We decided this time not to use the cruise control and follow the cars flow around us. We did that for the rest of the trip, driving without the cruise control. All of the previous problems were nothing in comparison to the following. As we driving in va, around 7am where many cars on the I-95 to follow their pattern. We said let's just setup the cruise control for few seconds and compare it to the cars beside us. We setup the cruise on 75, we noticed a significant speed increase. I pushed the brakes, it did not stop this time. The car was driving in higher speed. While I was trying to act as fast as I could, I pushed the brakes and switched the stick from d to n. I tried to disable the cruise control this time, it did not work. We parked in a near gas station, took deep breath, turned off the car, went to the bathroom and got back on the road. Thankfully, the cruise control was disabled.

Filed Apr 17, 2019 · Acceleration · OH

2018 chrysler pacifica limited. Consumer writes in regards to issues with active cruise control (acc). *ld the consumer stated the acc was not reliable if the vehicle was on a slight incline or slight decline relative to the target vehicle. The dash does not show the presence of a vehicle ahead.

Filed Mar 2, 2019 · Steering · 15,000 miles · AZ

Electric power steering suddenly went off and stopped working while driving at the highway speed limit of 65 and at 75. It has happened a total of 7 times during a one week period while on 2 trips. My van has 15,500 miles on it. So far it has only occurred while driving in a straight line. It has happened with cruise control on and with it off. It has happened with temperatures in the mid to upper 20's and when it wa s in the upper 60's.

Filed Oct 10, 2018 · Acceleration, Transmission · 7,000 miles · NY

I called the dealer regarding another issue with my vehicle. I was told that there are 2 open recalls and had to wait 2 months to get the service appointment. The recalls are for a manual park release and the cruise control. This is very alarming and very dangerous. I called chrysler corporation and was told that there is nothing that I can do and need to wait the 2 months. This vehicle is a hazard to the road! I do not feel comfortable driving an unsafe vehicle for 2 months!

Filed Sep 27, 2018 · Acceleration, Transmission · 1,800 miles · AZ

My wife and I just purchased the pacifica and decided to take a road trip from arizona to oregon . While traveling through the hills and mountains the transmission would not shift properly to maintain highway speeds! There was a lot of lag time from the drivers input between the transmission and engine to respond. Also the cruise control would engage suddenly and speed up. Took to the dealership and the tech said the vehicle software was engineered that way and he couldn't do anything for us.

Filed Aug 13, 2018 · Acceleration · 6,900 miles · IL

Tl* the contact owns a 2018 chrysler pacifica. The contact received notification of the federal safety agency campaign number: 18v332000 (electrical system, vehicle speed control). The vehicle was taken to ken nelson chrysler cadillac buick gmc (1100 n galena ave, dixon, il 61021, 815‑288‑4455) where the recall was repaired. Two months later, while driving approximately 65 MPH with the cruise control activated, the vehicle accelerated to 85 MPH. An alarm went off and the "over 75 MPH" warning indicator illuminated. The contact depressed the brake pedal and disengaged the cruise control. The dealer and manufacturer were not made aware of the failure. The failure was not diagnosed. The failure mileage was approximately 6,900.