Buick Lacrosse adaptive cruise problems

Filed Oct 18, 2023 · Brakes, Driver assistance · WI

Adaptive cruise control dropped out, taking along with it the ABS (warning light), Stabilitrak (handling system) (warning light), Collision prep (message). Dealer states the ABS computer module failed, now in process of finding a replacement. Meanwhile, the ABS, cruise control, and other systems mentioned here are inoperative. It may well be that this may be considered to be a component failure, not an inherent safety issue but under some driving conditions it is clearly a safety consideration.

Filed Dec 6, 2022 · Brakes, Electrical · ND

The component is the brakes and the brake pedal while not engaging the brakes they remained on even after the vehicle was shut off .the vehicle brake lights remained on this was not duplicated when I took the car in by the dealer of how the brake remains engaged we even when not being used I would have to release the break by pulling it up with my foot while driving . This was duplicated and witnessed by two others the dealership where I bought the car and a trusted mechanic. which no avai there was no warning light indicating any type of concern prior to it doing this. the brake pedal being slightly stuck my transmission shifts not properly and hot feeling to the car now I have a warning saying that AC will not work due to the overheating of my engine which I believe to have repaired however the repair that was believed to be the problem obviously wasn't the problem because the light still remains on and the fan runs continuously the minute I start the car to the time I shut the car off I live in North Dakota and it is -1 today and the fan continues to run at all times and the warning light is on cooling fan the car lunges at times which is easy to lose control over when it does this it lunges to the point where it physically noticeable and and no warnings of this that a compensation is going to need to be made in my driving with this lunge issue. I do feel this break issue has affected many other parts of the vehicle and the safety associated with these components. Also at times the driver's seat will not move it goes up to the dash or back to the back seat leaving me in a position where I cannot drive the vehicle safely at all. Also the cruise control would not engage because of the brakes being slightly engaged. Took her to the dealership discussed this problem with them and they could not duplicate and it's been going on since I purchased the car It had 30,000 miles on it when I bought it and it continues to do this and I think it's a safety issue

Filed Sep 9, 2022 · Driver assistance · TN

At highway speeds with the Adaptive Cruise Control engaged, the brakes are heavily applied when other vehicles or obstructions are not observed. ACC engaged on controlled access highway no vehicles or obstructions and random hard braking takes place. Vehicle has been taken to the dealer numerous times for this condition and dealer reports no problems.

Filed May 18, 2020 · Brakes, Driver assistance · 110,000 miles · MI

While driving to work going approximately 55mph in my 2014 buick lacrosse I lost all power steering. The stabilatrac indicator came along with a service ABS brake light. I was not able to set cruise control as well. I was able to make it to work and had to have the vehicle towed for safety reasons.

Filed Mar 30, 2019 · Acceleration · 16,800 miles · CO

I have an issue with the cruise control on my 2017 buick lacrosse, a vehicle with 17,004 miles. While traveling on the interstate with the cruise set to 70 MPH the system reset itself to 105 MPH and the engine revved 3000 RPM accelerating out of control. This was the second time it happened, the other time it reset to 95 MPH. Stepping on the brake pedal brought the speed back under control in both instances. I took the car to markley motors in fort collins colorado where they could not replicate the problem in their 4 mile test drive. They insinuated that I misused the resume function but in neither situation did I touch the controls. They indicated that there are no service bulletins for this problem.

Filed Oct 3, 2018 · Acceleration, Brakes · 40,000 miles · FM

Adaptive cruise engages antilock brakes in a random manner even when no car is in front of you when the vehicle is in motion at a variety of different speeds. Has happened multiple times for several months.

Filed Sep 27, 2018 · Lights · 121,000 miles · NC

While driving or sitting all the instrument panel/dash and headlight/daytime driving lights intermittently either flash off and on or shut off for several seconds and come back on. This problem has built up over time and the radio has also started to also intermittently turn off and on conjunction with all the lighting. This seems to occur when ever there is some kind of quick draw of electrical power, such as braking, downshifting of transmission to accelerate, turning on defrosters, or simply while driving. This power loss also affects the cruise control and when power loss occurs it will disengage. This disturbingly occurs while driving at night and power loss to instrument panel/dash and headlight leaves me in complete darkness for several moments at time. I have not idea how fast I'm going of if the road is still in front of me. I notice an issue with the previous body style of lacrosse but not mine. If the battery is disconnected for several hours some thing or some program is reset and the issue will stop for roughly two weeks and then start back up, but so far the issue seems to intensify up restarting after the battery is disconnected. The drivetrain is not affected by the power loss and will continue to operate during the illumination and instrumentation loss. The issue does seem to repeat more frequently when in town with the constant acceleration and braking. On the interstate the issue will occurs intermittently while cruising and when accelerating or braking and if some device is activated such as defrosters, turn signals, or air conditioning. With the intermittent and so far short nature of the power loss, I'm not able to ascertain if any other systems are being affected as of yet. The problem resembles alternator or battery failure, but both were replaced at the onset over a year ago. Videos of the cluster are available but too large to attach.

Filed Sep 7, 2018 · MN

My tcs & ABS lights will not go off. I am unable to get a lot of power after stopping & my cruise control will not engage. ??? This seems to be a very common problem in all buick lacrosses. Recall?????

Filed Oct 15, 2016 · Driver assistance, Electrical · 50,000 miles · TN

Takata recall purchased used in may 2015 with approx. 45k miles. Since I have purchased the car, I took it to a dealership in kokomo in to have it looked at for the park assist. What happens is when I am driving down the highway, usually with the cruise control on, going 60+ down the highway, the park assist comes on, all the lights on the dashboard flash and all the sounds go off in the car immediately disabling the car. At that point, the car disables itself and you cannot push the accelerator, making it difficult to get off the highway. You have to immediately pull off the highway and turn the car off. After waiting a few minutes, you can start the car up and the engine light will be displayed. The engine light will stay on until the next time you start the car and then goes off. Over the last year, I have had this happen approximately 20 times. The dealership in kokomo couldn't find anything wrong with it and they stated they cannot try to find something wrong with the car if it isn't happening when I bring in the car. I moved to tennessee the first of january 2016. It has happened to me since living here again so I took the car into parks auto service in columbia tn. After having my car for 2 1/2 weeks, they are unable to find out what is wrong with it. I have been very fortunate thus far to not get into a bad wreck losing my life or crashing into someone else and killing them. At some point, this will cause a major wreck and lives could possibly be lost or someone could possibly be disabled the rest of my life. At what point does this have to happen before buick will find an answer for this? I need help on this as there are no mechanics that can resolve this issue.

Filed Jul 6, 2016 · Acceleration, Transmission · 67,500 miles · MI

On friday, july 1, 2016 I was traveling down a 2 lane road with my cruise control set when my car suffered a loss of power. The engine still was running, but apparently my transmission lost the ability to power the car. I was able to park on the shoulder of the road, and eventually, towed to my mechanics shop. Yesterday I was told the problem was a faulty transmission control and it will cost me $1060 to repair. I was also told that this is a common enough problem that buick dealers keep the part in stock.. If it is that common of a problem, and cars are losing power on the road, that is a safety issue and should be subject to recall, instead of taking hard earned money out of owners pockets to fix! I might add that this car has less than 68,000 miles on it!