Which parts fail
Components named in complaints (headlights, tail lights, turn signals, interior lights).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2012 Buick Regal owners, lightly cleaned up (personal details are redacted by NHTSA).
I previously reported an issue with a he condensation in the driver side headlight which every one of these models with the hid headlights has this issue. Now it is becoming a safety issue as both headlights are doing it and are randomly going off while driving I almost hit a telephone pole with my infant in the car this is an extremely common issue with these vehicles and Buick has no fix they even stopped producing the replacement headlights this is an extremely dangerous issue I've made both nhsta and Buick aware of these issues and if nothings done to rectify them and something happens I will pursue legal action
The contact owns a 2012 Buick Regal. The contact stated that after starting the vehicle, he became aware that the electrical system was not functioning properly. No warning lights were illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the body control module. The vehicle was repaired, but the failure reoccurred. After investigating the failure, the contact related it to NHTSA Campaign Number: 12V093000 (Exterior Lighting), but the VIN was not included. The manufacturer was notified of the failure but provided no assistance. The failure mileage was 16,000.
The contact owns a 2012 Buick Regal. The contact stated that while driving at night, the illumination from the headlights was very dim. The contact had taken the vehicle to an independent mechanic and was informed that condensation had accumulated in both headlight modules causing the failure. The dealer was notified of the issue and informed her that they would call her back. The manufacturer was not notified of the failure. The vehicle was not repaired. The failure mileage was approximately 82,000.
The contact owns a 2012 Buick Regal. The contact stated that the driver's side headlight assembly developed condensation inside causing the light bulb to blow out. The contact indicated that the entire headlight assembly needed to be replaced to fix the failure. The vehicle was not yet repaired. The manufacturer and the local dealer were notified of the failure, but no assistance was offered. The failure mileage was 78,000.
The driver side headlamp assembly has a faulty seal which allows water to leak inside the housing under normal daily conditions. When this happens the water leaks down through the assembly where the headlight ballast is mounted, causing water to collect in the ballast, and killing it (making the headlight go out) as well as the electrical components that power the L.E.D. daytime running lights also making those stop functioning. There is no quick and easy fix for this, as the headlamp assembly must be replaced to restore the headlight because even replacing the burned out ballast will only provide light temporarily again until that too is again destroyed by water. Because there is no good alternative available with an aftermarket replacement, I was forced to purchase an entirely new assembly which cost $1,505 and took months to save and be able to afford. …
The headlight area had condensation in it that resulted in water in the headlight. This caused the headlight to go dark. This is a safety issue as one of my headlights is not working. I can't see that section of the road or adjacent sidelines. Very dangerous particularly at this time of year with deer running into road from the side. There are many other regal owners with this problem which can be verified by googling the problem. This is the second time the light has failed for condensation. Other drivers and pedestrians are at risk because they cannot be seen with the headlight out. Headlight was replaced once and has failed again. Cost to repair 2 years ago $1600 new estimate $1800. This is for one headlight but recommended to replace both.
The driver headlight assembly has water in it and unable to fix it without replacing whole assembly that can be as much as $1500. The light bulb and valance was replaced. The valance was filled with water. The headlight still wouldn't work. Upon further investigation there is a part sealed into the assembly that also has water in it with no way to get it out or replace. This is a safety risk since i am unable to see on driver side in dark without my light. There are no recalls but have found many complaints on same issue. The part water is in is sealed and shouldn't have a way for to get in. The only fix is replacing entire assembly. I have no light at all on that side until fixed.
The contact's uncle owns a 2012 Buick Regal. The contact stated that the front headlights were burned out. The contact was unsure whether there was a warning light illuminated. The contact did not provide further information. The contact stated that the vehicle was taken to an unknown dealer who diagnosed that there was condensation in the frontal headlights and that the front headlight assemblies needed to be replaced. The manufacturer was notified of the failure and referred the contact to the dealer. The vehicle was not repaired. The failure mileage was unknown.
Issue with the condensation/water getting inside our HID headlights. Have replaced once and now they are both full of water again. Dealer refuses to cover as a defect. VERY expensive to repair. Huge safety issue because lights can fail at any time going down a dark road! Safety to thers as they may not see me coming.
There is a water seal leak around the driver side headlight. I have photos showing proof of standing water. It has now caused the headlight, left turn signal, and drivers side brake light to fail. My passenger side headlight is doing the same. I have no headlights, no driverside lights period. I drive 2 children around in this car and it's gotten very dangerous. I contacted GM, and the local dealership and they won't fix it. I'm a [redacted] and don't have the $3200-$5000 I was told the repair would be. It is a problem in certain GM models, Cadillac Srx 2010-2015 having the same issue and the recall being fixed for those drivers. So, I have no choice but to drive around with no headlights, no left blinker, and no driver side brake light with two you children. I have to work and have no other options. …
Related recalls
Exterior lighting › Turn signal
General Motors LLC (GM) is recalling certain model year 2011-2013 Buick Regal and model year 2013 Chevrolet Malibu vehicles. These vehicles are equipped with two turn signal bulbs in each front turn signal. If one of the two front turn signal bulbs burn out in either front turn signal lamp, there is no indication to the driver.
Remedy: GM will notify owners, dealers will update the body control module software, free of charge. The recall began in September 2014. Owners may contact Buick at 1-800-521-7300 or Chevrolet at 1-800-222-1020.
Exterior lighting
General motors (GM) is recalling certain model year 2012 Buick regal vehicles manufactured from February 22, 2011, through February 22, 2012 for failing to comply with the requirements of federal motor vehicle safety standard no.
Remedy: General motors will notify owners, and dealers will reprogram the body control module free of charge. The safety recall began on March 29, 2012. Owners May contact GM at 1-800-521-7300.
Headlight complaints in other Regal years
Frequently asked questions
How common are headlight problems on the 2012 Buick Regal?
NHTSA has 34 complaints about the lights of the 2012 Buick Regal, 37% of the model year's 92 complaints. The component named most often is headlights (2 mentions).
Is there a recall for 2012 Buick Regal headlight problems?
Yes — NHTSA recall 12V-484 (turn signal, Oct 4, 2012); NHTSA recall 12V-093 (exterior lighting, Mar 7, 2012). Recall repairs are free at authorized dealers.
At what mileage do 2012 Buick Regal headlight problems start?
Half of the complaints with a recorded mileage happened before about 66,000 miles, and 9% before 25,000 miles.
Is it dangerous?
Owners linked 1 crash, 0 fires and 0 injuries to lights 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.