2005 Buick Lacrosse Electrical System Problems

Source: NHTSA · Updated Aug 13, 2026 · 80 complaints analyzed

Owners have filed 80 complaints with NHTSA about electrical system problems on the 2005 Buick Lacrosse, 25% of all complaints for this model year. Half of the reports with a mileage happened before 100,000 miles. The words owners use most often: “ignition switch” (10% of reports).

What owners describe

Phrases that appear unusually often in these complaints compared with complaints about other cars.

  • Ignition switch: mentioned in 8 of 80 complaints (10%)

At what mileage do electrical system problems happen?

Based on 47 complaints that reported the odometer reading.

Under 10k miles1 · 2%
10k–25k miles3 · 6%
25k–50k miles6 · 13%
50k–75k miles6 · 13%
75k–100k miles7 · 15%
100k–150k miles14 · 30%
150k+ miles10 · 21%

How serious are the reports?

Of 80 complaints, 2 mention a crash, 4 a fire.

Buick Lacrosse electrical system complaints by model year

Peak: 2008, with 84 complaints
2005: 802005802006: 83832007: 752007752008: 84842009: 312009312010: 46462011: 322011322012: 62622013: 542013542014: 14142015: 9201592016: 332017: 112017112018: 552019: 120191

n = 590 complaints · Source: NHTSA

Model yearElectrical System complaintsShare of that yearMedian miles
2019 Lacrosse114%56,000
2018 Lacrosse542%100,000
2017 Lacrosse1131%10,000
2016 Lacrosse36%99,000
2015 Lacrosse920%7,000
2014 Lacrosse1422%27,000
2013 Lacrosse5442%62,750
2012 Lacrosse6230%66,000
2011 Lacrosse3219%55,355
2010 Lacrosse4624%63,000
2009 Lacrosse3129%64,500
2008 Lacrosse8434%55,850
2007 Lacrosse7530%78,250
2006 Lacrosse8328%77,000
2005 Lacrosse8025%100,000

When owners reported it

Peak: 2014, with 32 complaints
2005: 1200512006: 332007: 2200722008: 332010: 3201032012: 112013: 1201312014: 32322015: 142015142016: 882017: 4201742018: 222019: 2201922020: 112022: 1202212023: 112026: 120261

n = 80 complaints · Source: NHTSA

Related recalls (1)

Electrical system:ignitionJun 23, 2014 · NHTSA campaign 14V355000 · 3,141,731 vehicles

Problem: This defect can affect the safe operation of the airbag system. Until this recall is performed, customers should remove all items from their key rings, leaving only the ignition key. The key fob (if applicable), should also be removed from the key ring. General Motors LLC (GM) is recalling certain model year 2005-2009 Buick LaCrosse, 2006-2011 Buick Lucerne, 2000-2005 Cadillac DeVille, 2006-2011 Cadillac DTS, 2006-2014 Chevrolet Impala, and 2006-2007 Chevrolet Monte Carlo vehicles. In the affected vehicles, the weight on the key ring and road conditions or some other jarring event may cause the ignition switch to move out of the run position, turning off the engine.

Risk: If the key is not in the run position, the air bags may not deploy if the vehicle is involved in a crash, increasing the risk of injury. Additionally, a key knocked out of the run position will cause loss of engine power, power steering, and power braking, increasing the risk of a vehicle crash.

Fix: GM will notify owners, and dealers will install two key rings and an insert in the key slot or a cover over the key head on all ignition keys, free of charge. The recall began on September 23, 2014. Owners may contact General Motors customer service at 1-800-521-7300 (Buick), 1-800-458-8006 (Cadillac), and 1-800-222-1020 (Chevrolet). GM's number for this recall is 14299.

What owners report

Short excerpts of recent complaints, with personal details removed. Full reports are on NHTSA.gov.

Gas. Leaking car smoking and cutting off

Received May 6, 2026 · NHTSA complaint 11736191

The contact owns a 2005 Buick LaCrosse. The contact received notification of NHTSA Campaign Number: 14V355000 (Electrical System) and the vehicle was repaired. The contact stated while driving 45 MPH, the vehicle inadvertently lost motive power and the contact was able to coast to the shoulder of…

Received Aug 10, 2023 · NHTSA complaint 11537698

The contact owns a 2005 Buick Lacrosse. The contact stated that the instrument panel was inoperable. The battery was replaced several times however, the failure persisted. The vehicle was taken to an independent mechanic where it was diagnosed that the mileage control circuit had malfunctioned. The…

Received Jun 28, 2022 · NHTSA complaint 11471401
Buick Lacrosse
BUICK LACROSSE FOURTH GENERATION China. Representative photo; appearance varies by model year. Photo: Dinkun Chen, CC BY-SA 4.0, via Wikimedia Commons.

Frequently asked questions

Do all 2005 Buick Lacrosses have electrical system problems?

No. NHTSA has 80 owner complaints about electrical system for the 2005 Buick Lacrosse (25% of the 315 complaints for this model year). Complaint data shows that the problem is reported, not how many of all cars sold are affected.

Was there a recall on the 2005 Buick Lacrosse electrical system?

Yes: 1 safety recall list electrical system. Check your VIN on NHTSA.gov to see whether the fix was done on your car.

At what mileage do electrical system problems start?

The median reported mileage is 100,000 miles: half of the reports with a mileage came before that.

What do owners say about electrical system problems on the 2005 Buick Lacrosse?

The most frequent phrase is “ignition switch”, in 8 of 80 complaints.

Other 2005 Buick Lacrosse problems

See all 2005 Buick Lacrosse problems or electrical system problems across all Lacrosse years.