Buick Lucerne adaptive cruise problems

Filed Mar 7, 2018 · Acceleration, Driver assistance · 78,000 miles · MN · crash

Buick lucerne electrical problems - onstar suspected. I 'm not sure that this is or isn't a safety problem, but after complaining to buick I was advised by them to file a claim(?) with you. About a month to 6 weeks after an in-town accident (10/22/16) that was repaired immaculately by the local gm dealer, the car sat in a park and fly lot for about 5 days while we had gone visiting out east. When we got back the car was dead as a stone. After a triple a call we got home and immediately got a new battery (12/20/16), even though I was surprised that it had gone dead because there was no warning (slow starting, etc). However, in the next 6 months or so, two more new ones went dead (2nd 1/3/17, 3rd 3/13/17) and were replace by the dealer at no charge. However, in the next year or so, not only did the onstar go dead, the brakes lights quit and was replaced, the cruise control quit, the stabiltrak quit, (and both were replaced). My insurance company - american family - informed me that the accident is not the cause of the problems. So finally I took it to another shop cas (complete auto service - austin) that does the city's police cars, and they ran a diagnostic on it and even though the onstar has quit working, by removing the fuse in it that 'seems' - after spending over $1300 and still not replacing the onstar for another $650, - to have solved the problem. At least so far.

Filed Dec 13, 2016 · Acceleration · 68,000 miles · MO

My father-in-law had the complaint that his cruise control was not working. I checked the car over and it was working fine. On his way home it quit working after about 75 miles. Another check and all was fine. Shortly after that, I just happened to be following him and the brake lights came on and never went off. I confirmed with him that his foot was not on the pedal. I put together that the brake lights were coming on and shutting off the cruise control. He took the car in and they added brake fluid. The cruise control kept kicking out. I came to the conclusion that the brake light switch was either out of adjustment or defective and wrote it down for his dealer. It turned out the switch was defective and it was replaced. The car has 68,000 and garaged. As a driver you won't know the brake lights are on without looking or find that the cruise control was not working. With the brake lights permanently on, other drivers can't tell when you are actually slowing down or stopping, and that is a potential risk for being rear ended. My father-in-law tried to be aware of this situation by engaging the cruise control when possible. As long as it was working, he knew his brake lights were operating as they were suppose to. Happened on highway and city, moving. Brake lights remained on after stopping. Everything was back to normal after awhile, I suspect inside temperature was at play somewhat also.

Filed Feb 26, 2016 · Electrical · 92,000 miles · LA

Tl* the contact owns a 2008 buick lucerne. The contact stated that the vehicle had an abnormal burning smell and would not operate. In addition, the cruise control did not operate. The vehicle was taken to the dealer where it was diagnosed that the fuse box overheated and melted, which caused the fuel pump and various other electrical components to malfunction. The technician diagnosed that the fuel pump and fuse box needed to be replaced. The vehicle needed to be recalibrated. The vehicle was repaired. The manufacturer was notified of the failure. The failure mileage was 92,000...updated 05-10-16 *bf updated 6/14/18

Filed Sep 24, 2015 · Acceleration · SD

Tl* the contact owns a 2011 buick lucerne. The contact stated that the cruise control would activate at random. The vehicle was taken to the dealer several times, but they were not able to replicate the failure. The manufacturer was notified of the failure. The failure mileage was not available.

Filed Sep 30, 2014 · Acceleration · 50,000 miles · IA

Tl* the contact owns a 2008 buick lucerne. While driving approximately 55 MPH, the cruise control failed. The vehicle was taken to the dealer for diagnostic testing and was repaired, but the failure recurred. The contact was unaware of the specific repairs to the vehicle. The manufacturer was not notified. The failure mileage was 50,000. Updated 12/01/14

Filed Sep 23, 2014 · Lights · 20,000 miles · IL

Tl* the contact owns a 2006 buick lucerne. When the vehicle was driven over a bump with the cruise control activated, the brake lights remained illuminated. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was 20,000.

Filed Sep 2, 2014 · Acceleration · 88,000 miles · MI

Tl* the contact owns a 2006 buick lucerne. The contact stated that the cruise control failed to deactivate. The vehicle was not diagnosed or repaired. The manufacturer was not notified. The approximate failure mileage was 88,000.

Filed Mar 13, 2013 · Brakes · 64,834 miles · MO

The brake lights would periodically come on while driving without me touching the brake pedal at all. It also continually tripped my cruise control. Gm dealership did the repairs.

Filed Dec 18, 2012 · Acceleration, Brakes · 8,275 miles · FL

Brakes lights would come on by themselves while driving or while parked without depressing the brake pedal. Also cruise control would be disabled without using the brake or any switch to disable it. Took it to a gm repair facility (dealer) who recalibrated the brake pedal switch, but the condition returned. Took it to an independent repair facility who recalibrated the brake pedal sensor. That independent repair facility thought that the cruise control problem was related to the brake lights coming on by themselves. Hazard: someone driving behind could confuse the brake lights coming on as a sign that the car was suddenly stopping, which might cause the car following to slam on their brakes and causing an accident.

Filed Jan 25, 2012 · Acceleration, Driver assistance · WI

This electrical problem began about the first of the year when the electric door locks started to cycle while driving. It has since migrated to turning off the cruise control and causing the headlights to flash off and on. The remote start will start the car but will shut down the motor after a few seconds. These problems continue during every operation. I have been informed by the dealer that it is a p140 code and will take about 3 to 4 hours to diagnose where the problem at $80.00 per hr. Plus repair.