2008 Buick Lucerne Electrical Problems

I purchased the vehicle a week before the incident. There were no warning lights or messages and nothing to indicate there was a problem. I was driving in a crowded parking lot so I was going very slow. When I turned my car suddenly died. My husband was passenger and my daughter and 2 sons were in the back. Smoke started coming from the seat and we all rushed out of the car while the seat was on fire. my husband pulled the seat out and put the fire out. I was not aware the battery is located under the back seat. I had the car towed and inspected by a mechanic. I was told the battery does not have a cover so the metal from the seat was touching the battery causing the fire. The battery is a top post battery that is recommended for this vehicle. I can find no information about a battery cover. The vehicle is available for inspection. I have photos and the report from the mechanic but I'm having trouble uploading them

NHTSA ID

11668301

Incident

May 28, 2025

The contact owns a 2008 Buick Lucerne. The contact stated that the vehicle failed to start. The vehicle was examined by an independent mechanic, who diagnosed that the fuel pump relay and fuse had melted, and the fuse box located underneath the rear seat needed to be replaced. The vehicle was not yet repaired. The manufacturer and local dealer were not notified of the failure. The failure mileage was 153,000.

NHTSA ID

11657304

Incident

Apr 1, 2025

Mileage

153,000 mi

Fuse box (rear) 2008 Buick Lucerne CXL. FUEL PUMP Relay burns fuses out quickly. The fuse box located under the back seat has been having issues of burning where the fuel pump relay is located. It then in turn shorts out the fuse box which keeps needing to be replaced. This is a safety issue as it catches fire under the back seat. Fuse box has been replaced before and continues to have issues and melts, causing the vehicle to die in mid traffic, does at stop lights or even just parked and running it dies out and smells like burning plastic. The fuse box has caught fire several times. The issue has been confirmed by several mechanics and dealerships. Also there is a history of electrical problems with the rear fuse box in carfax. There was no warning, and now the check engine light is illuminated. We bought the vehicle last year in June of 2024. There seem to be no problems at the time until shortly after we had bought the vehicle. Turns out there's a long history of electrical problems involving the rear fuse box with this vehicle. I have uploaded screenshots of the car report on this vehicle. There are more complaints.

NHTSA ID

11613680

Incident

Sep 10, 2024

The contact owns a 2008 Buick Lucerne. The contact received notification of NHTSA Campaign Number: 14V355000 (Electrical System) however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact stated while driving at an undisclosed the vehicle lost motive power with the low oil pressure warning light illuminated. The dealer was contacted; however, the vehicle was not repaired. The manufacturer was not made aware of the issue. The failure mileage was approximately 120,000. Parts distribution disconnect.

NHTSA ID

11600153

Incident

Jul 8, 2024

Mileage

120,000 mi

The contact owns a 2008 Buick Lucerne. The contact stated that immediately after his wife had started the vehicle, the vehicle inadvertently lost power and was unable to be restarted. After a visual inspection of the battery compartment, the contact observed that the fuse relay showed signs of an electrical fire. No warning lights were illuminated. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. The manufacturer was notified of the failure but provided no assistance. The failure mileage was 78,000. The VIN was not available.

NHTSA ID

11592866

Incident

Jun 6, 2024

Mileage

78,000 mi

Vehicle shuts off due to fuel pump relay connection problem which is due to the back seat rubbing against the fuse box

NHTSA ID

11581339

Incident

Apr 1, 2024

Our Buick Lucerne would crank but wouldn't turn over when trying to start after trying to pick up take out. 1) It was suggested to me by a passerby that it sounds like a fuel pump relay. 2)I started to smell something burning. The passerby who happens to be familiar with Buick Lucerne tried to help. He lifted the back seat and showed me the fuel pump relay which was burned. Then he switched the electrick window relay which is the exact same relay switch and the car started. Went immediately to an autozone and bought spare fuel pump relay. Thought that solve the problem, but every 2 to 3 days I'd smell that burning smell. 3) The mechanic I've been going to for 10 years confirmed the issue 4)Have not taken to dealer or insurance rep 5)Absolutely no visual warning on dashboard. the warning happens when I start smelling the burning odor. Started one and a half months ago....

NHTSA ID

11578072

Incident

Jan 20, 2024

The contact owns a 2008 Buick Lucerne. The contact stated while attempting to start the vehicle, the vehicle made an abnormal sound and failed to start. The check engine warning light was illuminated. The vehicle was towed to an independent mechanic. The vehicle had not been diagnosed or repaired. The contact referred to the NHTSA Campaign Number: 08V441000 (Electrical System). The manufacturer was not made aware of the failure. The failure mileage was unknown.

NHTSA ID

11556293

Incident

Dec 21, 2020

The transmission started not shifting as I was driving down the road and the relay fuse box caught on fire and I think it’s where the back seat lays on top of the fuse box which rubs the fuses. Which is dangerous bc it catches on fire and could blow the car up while driving

NHTSA ID

11553577

Incident

Sep 1, 2023

Vehicle refused to start. No warning light illuminated on dash. Checked Fuel Pump Relay and it was burned. Replaced and it keeps burning and getting extremely hot. Relay has been replaced x4. Fuse Box is starting to melt. Wiring to Fuel Pump is free of any corrosion on wiring/prongs. Interior starts to smell of heavy smoke increasing the risk of a FIRE in the rear seats.

NHTSA ID

11550070

Incident

Oct 8, 2023

I went to start the vehicle and it failed to start. I found the fuel pump relay to be badly burned 🔥. On the 30 pin. The board was melted at the 30 pin spot for the fuel pump relay. I purchased a new relay from NAPA. I questioned whether they had a new replacement fuel pump. They told me it was not available only through the dealership. My concern was that where the relay was located at there was a possibility of a fire given how badly the relay and board was burned. I replaced the relay and purchased an extra incase this might happen again. To my surprise it happen just days later while I was driving on the expressway. I had to get off the road immediately. Engine died, no power steering. I checked the relay, it was smoking hot. I will have to have the problem resolved. There is no way a relay should ever get hot, let alone that hot. The fuel pump fuse was not effected. Why is the relay not protected from getting so hot. There is definitely a real risk of fire. No one sits in the back seat normally. But, my grandson's. This should not ever happen.

NHTSA ID

11545205

Incident

Sep 12, 2023

The contact owns a 2008 Buick Lucerne. The contact stated that the vehicle failed to start. The contact stated that after investigating the failure online, her husband purchased a fuse box relay from an unknown dealer and installed the part underneath the rear seats of the vehicle. The vehicle then started; however, the failure recurred approximately 5 days later. The contact's husband replaced the relay for a second time; however, the failure persisted. The contact stated that the fuse box relay had melted and there was smoke. There was no warning light illuminated. The vehicle was not diagnosed nor repaired. The contact related the failure to NHTSA Campaign Number: 10V240000 (Electrical System). The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 82,500.

NHTSA ID

11530889

Incident

Jun 1, 2023

Mileage

82,500 mi

The fuse box under the back seat has been having issues of burning for the fuel pump relay. It then in turn shorts out the fuse box which keeps needing to be replaced. This is a safety issue as it it catch fire under the back seat.

NHTSA ID

11529884

Incident

Feb 2, 2023

The fuse block is shorting out and melting and causing the fuel pump relay to burn.

NHTSA ID

11527605

Incident

Jun 18, 2023

The contact owns a 2008 Buick Lucerne. The contact stated that the vehicle failed to start. No warning light was illuminated. The vehicle was towed to an independent mechanic, who diagnosed that the pressure from the rear driver's seat caused a short in the fuel pump and the relays, and that the fuse box needed to be replaced. The contact stated that the independent mechanic had previously replaced six relays and the fuel pump; however, the failure recurred. The vehicle was not repaired. The manufacturer was made aware of the failure and advised the contact to file a complaint with the NHTSA Hotline. The failure mileage was approximately 113,000.

NHTSA ID

11527379

Incident

Jun 5, 2023

Mileage

113,000 mi

OUR FUZE BOX IS LOCATED UNDER REAR SEAT. THE RELAY FUZE FOR THE FUEL PUMP MELTED SO BAD IT WAS HOT AND COULD OF CAUSED FIRE. AM HEARING ALOT OF PEOPLE SAYUNG THEY HAVE SAME ISSUE

NHTSA ID

11526236

Incident

Jun 3, 2023

The contact owns a 2008 Buick Lucerne. The contact stated that while parked, the interior cabin lights became illuminated, and the vehicle failed to start. When the key was turned there was a clicking sound, but no warning lights were illuminated. Additionally, the contact stated that on one occasion, the electric seat independently moved forward while the driver was seated in the seat. The vehicle was towed to an independent mechanic where it was diagnosed that the fuse box needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 90,000.

NHTSA ID

11518248

Incident

Apr 19, 2023

Mileage

90,000 mi

The rear fuse box burned out the fule pump relay because of the metal hooks for the seat hit it and pop the fuse out causing it to ark and burn out. I had to have the fule pump replaced twice as that what I was told at auto shops. Going on line was the only reason I found out about the fuse box. After my car died and wouldnt start, opened the casing and sure enough the fule pump housing was completely burned. So now after replacing two fule pumps my emergency money is gone and who knows how long it will before am able to buy a 400$ fuse box with probably another couple hundred in labor to change it out. All because there was to much metal on the seat hooks.

NHTSA ID

11513148

Incident

Dec 12, 2022

The fuel pump relay kept burning out. And caused the fuse box terminal heat damage. Almost started on fire and started smoking. Vehicle stalled out on the freeway and the Dept of Public safety towed my vehicle off the freeway.

NHTSA ID

11464545

Incident

Apr 20, 2022

The crank shaft sensor went out and caused the steering and brakes to go out. It took out all communications with the car. I had had intermittent problems with it as it went out, and it didn't throw a code showing what the problem was. (I took it to AAMCO once and Goodyear twice before they could identify the problem.) (Some Buick dealers do not work on cars over 10 years, and some do not use off-market parts when GM has chosen to stop making replacement parts, such as the rack and pinion/steering gear. Their goal is to sell cars, not maintain.) At 150,000+ miles, sensors go out, and I expect to replace them. What I don't expect is deliberate design that will cause the vehicle to be or cause damage(d). This is a design flaw by GM and I wonder how many mystery crashes can be related to this.

NHTSA ID

11458471

Incident

Mar 18, 2022

1. Fuse box was replaced, yes. 4th repair shop replaced. I say only time will tell for sure. i don't drive every day 2. driving I-95 from VA to MD at speeds of 30+ to 75+ cars driving close behind could have ran into rear causing my car, their car, and multiple other cars to be in major accident with possible multiple deaths. 3. reproduced, no. independent service center, no 4. No. Other - the 4th repair shop inspected vehicle component. 5. No warning lamps. No messages or symptoms, car just stalled and would not start/move and w​hen I tried to start car again car would not start, but had all kinds of warnings lamps lit up. The first time the engine stalled was driving (moving) into entrance of toll booth in Richmond, VA, July 27, 2021 approx. 2:15 pm. additional info: Four (4) times car stalled while driving in traffic without warning, car would not start again had to be towed each time to a repair shop. Three (3) repair shops did not repair the problem. First repair shop charged me approx. $350.00 +- for repairs. PLUS I had to stay over night in hotel costing me approx. $120.00+- Total $470.00 +- Car still had same problem!! Second repair shop did not charge me for repairs, but not sure if any work was done, had to get a car rental to get back to Maryland. s second shop kept car ofr 6 days before working on problem. Car rental cost me $467.27. Total $467.27 Car still had same problem!!! Third repair shop kept car for 5 days, charged me approx. $125.+-, still the car had the same problem. Total $125.00+- Car still had same problem!!!! Fourth repair shop says he found fuse box to be the problem, repair cost me approx $554.00+- Total $554.00 My total expenses are approx. $1,491.20 only time will tell if problem has been fixed, not to mention the extreme emotional stress dealing with delays on repairs and extreme emotional stress driving not knowing when or how car would stall again.

NHTSA ID

11430965

Incident

Jul 27, 2021

To start things off the car would crank but not start. My wife did some research and these cars have a problem with the fuel pump relay shorting out. So I replaced it and it fixed the problem for a few days. I was driving home from work and the car shut off. I could smell plastic burning. I pulled over and pulled the fuse box cover off which is located under the rear seat and I pulled the relay out and burned my fingers in the process. So something is wrong and it's causing the relay to overheat and melt. There are many people according to carcomplaints.com that have the same issue. I've seen a lot of people saying that GM says that the seat bracket touches the fuse box putting pressure on the relay causing this problem. Well after I replaced the relay I did not put the rear seat on and it still burned out. In my mind it seems to be a fire safety hazard. No check engine lights came on either.

NHTSA ID

11428906

Incident

Aug 12, 2021

-The electrical system failed, causing the fuel pump to not work properly due to design flaw in the backseat putting pressure on the fuse box which is located under the backseat. The spot where contact is made to the fuse box, is where the fuel pump relay is. Pressure from the seat bracket (with or without a passenger in the seat) causes the pump replay to not make proper contact with the terminal, therefore causing the power to arc and get so hot that the relay starts smoking, melting the relay, fuse box and surrounding fuses and leaving black scorch marks on the inside of the lid to fuse box and making the car smell like burnt plastic. In addition to now having to purchase multiple replacement relays it has also caused additional electrical issues which resulted in having to replace multiple fuses as well as purchase another battery due to theses issues putting added strain on my battery which caused it to drain and not hold a charge any more. Yes the car and parts are available for inspection. -My safety and the safety of others is at risk due to major risk of catching on fire which could happen while driving and therefore cause an accident, could cause one of my passengers, including my child or myself to be severely hurt/burnt. -Yes the issue has been reproduced by many other owners of the same year/make/model as per the hundreds of previous complaints found about the same issue. -No there were no warning lights, signals or messages before the failure. No warning at all.

NHTSA ID

11426686

Incident

Jun 5, 2021

I keep fixing this car for the last 11 months , and still can not drive it after $5,000 in repairs, the car stops in the middle of the intersection , on the freeway several times. I went to different mechanics, the dealership to, they keep fixing it, charging me, but the car is still not fixed. I'm afraid to drive it because I don't wanna lose my life and to jeopardize another's people lives.The car just stops while I'm driving.

NHTSA ID

11423447

Incident

Jun 26, 2021

WHEN I FIRST BOUGHT THE CAR OVER A YEAR AGO THERE WERE 3 DIFFERENT OCCASIONS THAT MY CAR WOULD NOT START SO I CONTACTED THE DEALERSHIP THAT I BOUGHT IT FROM AND THEY EXPLAINED TO ME THAT IT WAS A REOCCURRING PROBLEM WITH THAT MODEL FOR THE FUEL PUMP RELAY TO GO OUT AND AFTER A COUPLE TIMES OF IT GOING OUT IT WOULD ULTIMATELY FRY THE FUSE AND RELAY BLOCK AND IT WOULD NEED TO BE REPLACED SO THAT IS WHAT THEY DID AT THE DEALERSHIP AND WITHIN THEY YEAR THAT I HAVE OWNED IT I HAVE REPLACED THE FUEL PUMP RELAY 3 TIMES AND DRIVING TO THE PARTS STORE LAST WEEK THE CAR JUST DIED IN THE MIDDLE OF THE STREET AND HAS NOT STARTED SINCE. I WAS TOLD IT WAS DUE TO THE HINGE ON THE SEAT RUBBING THE SIDE OF THE FUSE AND RELAY BOX SPECIFICALLY THE FUEL PUMP RELAY THAT IS THE CAUSE OF THE FUSE AND RELAY BLOCK TO SHORT OUT

NHTSA ID

11414724

Incident

Apr 23, 2021

Mileage

117,000 mi