2018 Buick Lacrosse Electrical system Problems
- Complaints
- 5about this part
- Share
- 42%of 12 total for the year
- Median mileage
- 100,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 5 complaints about the electrical system of the 2018 Buick Lacrosse, 42% of the 12 complaints for this model year. Where a mileage was given, the median is 100,000 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“I have brought my 2018 Buick Lacrosse to two different Buick dealerships who say that even though a special instruction letter was recognized and a recall was observed, because my check light went out and the codes on the car where cleared, they will not fix either recall. On three different occasions, the car slowed down to a crawl speed, the check engine light went on and the brakes applied themselves. Also across the dash was displayed 'service transmission'. I thought it was the accelerator pedal position sensor, but it may be a transmission problem. …”
NHTSA complaint #11523910, filed 2023-05“I received a notice from GM that my vehicle with the electrical connection to the accelerator pedal which could cause a a reduced power and acceleration condition. However, this is not a recall and I should not seek a repair until I have evidence that my vehicle has this problem. This sounds like a serious safety risk to me. If this condition occurs when I am merging into traffic on an interstate, it could cause a serious accident. Apparently owners are supposed to wait for such an occurrence in order to gather evidence of a need for a repair. …”
NHTSA complaint #11258360, filed 2019-09“When I get to a stop sign, and a stop light, when trying to accelerate after a complete stop, the car would struggle to accelerate to go forward. Where the shifting gears would start blinking, and the warning lights (engine power reduced, engine light, and the traction safety collision light) would display itself making it misfire and impossible to even go forward while pressing the gas pedal. …”
NHTSA complaint #11698766, filed 2025-11“The contact owns a 2018 Buick Lacrosse. The contact stated that the key fob failed to open the doors and the vehicle was unable to be restarted. The failure had recurred on several occasions. The contact stated that the batteries in the key fob were replaced but the failure persisted. The local dealer was notified of the failure, but no assistance was offered. The manufacturer was not yet contacted. The failure mileage was 100,000.”
NHTSA complaint #11554335, filed 2023-11, 100,000 miles“2018 Buick Lacrosse. Consumer writes in regards to vehicle shutting off suddenly. The consumer stated the battery was replaced, but the failure recurred. The dealer updated the software , but could not guarantee the failure would not recur.”
NHTSA complaint #11302016, filed 2020-01Related service bulletins
- 11024324Sep 4, 2025This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
- 11023365May 14, 2025This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
- 11017595Apr 3, 2025This service bulletin provides information on the proper Reflective High Temperature Heat and/or Insulating Tape to use for certain repairs, such as Wiring Harness Repairs.
- 11017443Apr 2, 2025This service bulletin provides a repair procedure to correct a customer concern of a Malfunction Indicator Lamp (MIL) Illuminated - DTC P3055 Set.
- 11017244Mar 31, 2025The intent of this service bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other…
- 11017207Mar 21, 2025This service bulletin provides information for dealers/technicians on Service Programming System (SPS) Error Codes E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414…
- 11017031Mar 12, 2025This service bulletin provides information to diagnose batteries that have set for a long period of time and/or cold weather climates and testing those batteries.
- 11014230Jan 31, 2025This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.
- 11013149Jan 17, 2025This service bulletin provides information to the customer about the rear camera guidelines not being present at times due to the VBM taking over the rear camera option.
- 11013239Jan 14, 2025This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
Electrical system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2019 | 1 | 14% |
| 2018 | 5 | 42% |
| 2017 | 11 | 31% |
| 2016 | 3 | 6% |
| 2015 | 9 | 20% |
| 2014 | 14 | 22% |
| 2013 | 55 | 42% |
| 2012 | 62 | 30% |
| 2011 | 32 | 19% |
| 2010 | 46 | 24% |
| 2009 | 31 | 29% |
| 2008 | 84 | 34% |
| 2007 | 75 | 30% |
| 2006 | 83 | 28% |
| 2005 | 80 | 25% |
Other parts of the 2018 Buick Lacrosse
4 complaintsFuel system
3 complaintsTransmission and drivetrain
3 complaintsVehicle speed control
2 complaintsBrakes
1 complaintsOther or unknown
1 complaints
← All problems reported for the 2018 Buick Lacrosse
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology