Buick Lacrosse overheating problems

Filed Jun 6, 2025 · Electrical, Lights · OH

Low beam headlights randomly turn off while driving at night and day. Causing not to be able to see the roadway at all. Very dangerous!!! They give no warning at all. Only the low beams do this. Bright lights are not affected. There was a recall for this issue but they said my car was not affected. But it is 100% affected by this recall. Ot seems like the Headlamp driver module is overheating. It gets extremely hot. This issue almost caused a very serious accident .

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 Apr 30, 2017 · Engine · 63,000 miles · IL

The engine fan would come on after driving the car for a couple days, finally while driving the car the engine light came on and the car started running on reduced power and the car overheated. A leak was found in a hose and was replaced but yet the car still continues to overheat rapidly.

Filed Nov 28, 2016 · Electrical, Engine · 12 miles · KY

On november 19, 2016, I purchased the 2017 buick lacrosse premium awd. On that same day, while I was driving on the highway the overheated engine light came on, beeping sound, oil light came on, shortly vehicle indicated immediately to stop, which I did, stranded on the highway in en route to dealership. I had just left the dealership approximately five minutes ago after I purchased the vehicle. The vehicle was towed to dealership. Simultaneously at 4:48 p.m. Est, onstar sent notification via email stating, "a critical issue with the engine and transmission system in your 2017 buick lacrosse awd has been detected...please service your vehicle immediately." on november 20, 2016, I rescinded my contract with dealership connected to the above issues. On november 21, 2016, dealership fully refunded $47,848.19 and continued its possession of said vehicle since november 19, 2016. On september 10, 2016, I ordered the vehicle with the dealership with high expectations on a new vehicle. The dealership did not disclose to me about the above problems and safety issues prior to my purchase. I felt unsafe in the vehicle because it was making loud noises underneath the car as I drove it, for example, I felt like I was going to blow up in the vehicle. I also felt unsafe driving at low speed with the emergency lights on the highway. I felt unsafe stranded on the highway in the vehicle, waiting for the tow truck.

Filed Jan 11, 2016 · Engine · 55,000 miles · OH

I noticed a few wet spots under the vehicle, but I couldn't establish where it was coming from. On 25/nov/2015 while I was driving, the vehicle's temperature gauge suddenly went up, followed by "engine overheat" message and alarm. I was on a long bridge in a construction area, and I was forced to stop on the side in a very dangerous location. I had the vehicle towed to a repair shop where it was discovered that there was absolutely no coolant remaining. The shop mechanic added more coolant with a dye and let it run in order to find out where it was leaking from. There was no leak at all. I was told to drive home and come back the next day for a check. I went back the next day, and there was no sign of leakage. After about 1 week I started noticing the wet spots on the the ground again. This time I took it to the buick dealer, and they couldn't find any sign of leaking coolant. I checked on the web and realized that this is a common problem with buicks. Many owners have expressed their frustration with coolant leaks whose course could not be established. I am now stuck with a vehicle that could literally go up in flames any momment. I believe that this is a potential design issue that should be established.

Filed Nov 5, 2015 · Lights · 157,800 miles · WA

The headlamp driver module may be overheating or cutting out and fail, causing the headlamps and daytime running lights to not illuminate at random times when car is driving or parked.

Filed Aug 17, 2015 · Electrical, Seats · 70,000 miles · TX

Tl* the contact owns a 2008 buick lacrosse. The contact stated that the pts warning indicator illuminated and the seats overheated. The vehicle was taken to a dealer where it was confirmed that the seat sensor and the pts module needed to be replaced. The vehicle was repaired, but the failure recurred. The contact mentioned that the pts module was replaced on two other occasions. The manufacturer was made aware of the failure. The approximate failure mileage was 70,000.

Filed Jul 13, 2015 · Engine · TN

My car overheated and the coolant system light came on plus the service oil light came on check engine light came on. I put coolant in the car but after 30 mile driving it done it again and now I hear noise under my car while driving after I let the car sit fo 30 mins to cool off just so I can make ot home.

Filed May 26, 2015 · Lights · 53,289 miles · TX

Tl* the contact owns a 2008 buick lacrosse. The contact stated that the headlamps and daytime running lights failed to illuminate. The vehicle was taken to an independent mechanic who diagnosed that the headlamp driver module overheated and needed to be replaced. The contact received notification of the federal safety agency campaign number: 14v755000 (exterior lighting); however, the part to do the repair was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The failure mileage was 53,289. Updated 7/21/15*cn updated 10/17/2017

Filed Mar 23, 2015 · Lights · 50,000 miles · TX

The 2005 buick lacrosse exhibits exactly the same hdm relay failure as described in the federal safety agency campaign number: 14v755000. The hdm module can overheat and fail which causes the headlights or daytime running lights to fail to light. In the overheating situation the hdm relay seems to shunt the battery current which causes enough heat to melt the fuse panel, and killing the battery. I have replaced the fuse panel, and relay and with new equipment and the lights worked again. The hdm module has since failed again at 69000 miles, although I caught it before the fuse panel was melted. Expand the federal safety agency campaign number: 14v755000 to include 2005 buick lacrosse vehicles as well.