Which parts fail
Components named in complaints (battery, alternator, wiring, ignition, instrument cluster, infotainment).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2006 Buick Lacrosse owners, lightly cleaned up (personal details are redacted by NHTSA).
So many issues with the Buick. Made of glass. First I had no coolant line and I took it to be inspected before at, Baumen Ford and they said everything was fine with it. Turns out needed new coolant line, head gasket, timing cover, and switch. 5 new tires, rebuilt transmission, epc solenoid, transmission lines, rear pivot, left front wheel barring, formed band, and many many more. Currently with everything replaced and more that I haven't listed/can't state because don't know the term. Already Has costed me 10k. And still have issues, with the APP, code P1125, P2120, P2138, & C0240. Need to inspect these car Models from 2003-2009 as they all have similar issues and nothing has been done.
Recall in 2014 re: ignition switch failure of more than one key on keyring in ignition. Weight would cause car to shutdown(turn off ignition) in a crash thus not allowing airbags to deploy. Recall started in 2014. Did not own the car until 2017. Was not aware of recall. Son was injured in crash of such vehicle on 2/16/19. Hit a telephone pole at approximately 60mph. Front nor side curtains did not deploy resulting in severe traumatic brain injury to brain stem. Was in coma for 6 days. 10 weeks in icu and rehab. Is impaired now effects walking , speech, adl skills, memory. Will need long term care.ws traveling g on a rural road, hit patch of black ice, o ercorrected and slid across road hitting utility pole at 60-70 MPH.. Needed to be extricated from vehicle, unconscious vicious, was wearing seatbelt. VIN not available.
Hello, my 2006 Buick Lacrosse regular beam headlights keeps going out due to the wiring getting hot for some reason. No aftermarket highlights or bulbs been added. The wiring is melting completely. You can see smoke coming from the headlight assembly. I'm also experiencing my entire dash goes out while driving for 2-seconds then comes back on, I'm not sure if the wiring that's shorting out from my low beam headlights after burning is causing this issue or not since the wires begins to touch after the wire covering is burned. I contacted Buick the manufacture, and they are giving me the run around asking me questions that doesn't even pertain to the issues at hand, like when was your last oil change? …
Tl* the contact owns a 2006 Buick Lacrosse. The contact stated that after the ignition key was turned to the on position, the vehicle failed to start as the security warning light illuminated. The contact mentioned that the failure occurred after the vehicle was serviced under NHTSA campaign number: 14V355000 (electrical system). The vehicle was towed to the contact's residence. In addition, the contact stated that the headlights failed to operate without warning intermittently. The contact replaced the head lamp driver module twice; however, the failure recurred. The vehicle was taken to a dealer, but was not diagnosed or repaired. The contact received notification of NHTSA campaign number: 14V755000 (exterior lighting); however, the part needed to do the repair was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. …
Tl* the contact owns a 2006 Buick Lacrosse. While driving various speeds, the contact had to pump the brake pedal several times in order for the vehicle to stop. The ABS and traction control warning indicators illuminated. Also, the instrument panel failed to remain illuminated in order for the contact to view necessary information while driving. In addition, the contact stated that the vehicle received the aftermarket seat covering indicated in NHTSA campaign number: 06V417000 (air bags). The vehicle was not included in the recall for the covering to be replaced despite the manufacturer assuring them it was the same material used. The contact took the vehicle to a certified mechanic who diagnosed that the hub needed to be replaced. The vehicle was repaired, but the failure recurred. The vehicle had not received a second repair for the ABS and instrument panel. …
Tl* the contact owns a 2006 Buick Lacrosse. The contact stated that the key was not able to turn from an off to an on position several times intermittently. The contact also stated while traveling approximately 65 MPH, the contact crashed into the rear of another vehicle and was involved in a six vehicle crash. The air bags did not deploy. The contact was unconscious and a police report was filed. The contact sustained major injuries. The vehicle was destroyed. The contact notified the manufacturer who investigated the air bag concern and indicated that the crash location would not warrant the air bags to deploy. The contact was later notified of NHTSA campaign id number: 14V355000 (electrical system). The approximate failure mileage was 80,000.
Tl* the contact owns a 2006 Buick Lacrosse. The contact stated that while driving at 50 MPH, the low beam headlights failed. The contact was able to use the high beams in order to view the road. The vehicle was taken to a dealer where it was diagnosed that the headlamp modules needed to be replaced. The vehicle was repaired. The contact received notification of NHTSA campaign number: 14V755000 (lighting, electrical system), however, the part to do the repair was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time to do the recall repair. The manufacturer was made aware of the failure. The failure mileage was 63,000. Parts distribution disconnect. Updated 02/05/16 updated 02/10/16.
Tl* the contact owns a 2006 Buick Lacrosse. The contact stated that the low beam, high beam, day time running lamps, and emergency/hazard lighting failed to function intermittently. The failure occurred more than twice. The contact was uncertain if the lights would operate properly during the evening hours. John jones auto group corydon (1735 gardner ln nw, corydon, in 47112, [phone]) indicated that the vehicle was not included in a manufacturer recall and had not scheduled an appointment to diagnose the failure and repair the vehicle. The manufacturer was notified of the failure. The approximate failure mileage was 106,000.
Tl contact owns a 2006 Buick Lacrosse. The contact stated that the headlights failed. As a result, the contact had to activate the high beams. The vehicle was included in NHTSA campaign id number: 14V755000 (exterior lighting) however, the part was available. The vehicle was taken to a dealer where she was informed that additional repairs were required prior to the recall remedy being performed. The dealer mentioned that the wires were burned. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was not available. Updated 04/06/15
Low beam headlights on both sides stopped functioning. High beams still work. Verified that bulbs and/or fuses were not the problem. Same issue as NHTSA recall 15V519000 GM recall 14291. Contacted GM who claimed my particular car was not included in recall. As mentioned in previous comments, that makes no sense. If its the same problem as other recalled cars had why isn't my car also recalled? In my opinion GM needs to recall all cars with this problem or supply a valid reason why some cars are excluded from the recall.
Related recalls
Electrical system › Ignition
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.
Remedy: 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.
Electrical complaints in other Lacrosse years
Frequently asked questions
How common are electrical problems on the 2006 Buick Lacrosse?
NHTSA has 83 complaints about the electrical system of the 2006 Buick Lacrosse, 28% of the model year's 299 complaints. The component named most often is instrument cluster/panel (1 mentions).
Is there a recall for 2006 Buick Lacrosse electrical problems?
Yes — NHTSA recall 14V-355 (ignition, Jun 23, 2014). Recall repairs are free at authorized dealers.
At what mileage do 2006 Buick Lacrosse electrical problems start?
Half of the complaints with a recorded mileage happened before about 77,000 miles, and 4% before 25,000 miles.
Is it dangerous?
Owners linked 5 crashes, 5 fires and 4 injuries to electrical system problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.