What is the bulb model number for Cadillac ATS-L headlights?
2 Answers
Cadillac ATS-L high/low beam bulbs use imported German Philips 9012 bulbs, while the fog lights are LED bulbs. Xenon headlights offer advantages such as high illumination brightness, long irradiation duration, good stability, and energy efficiency. High brightness: Xenon headlights can achieve a maximum brightness output of 3200 lumens, whereas halogen bulbs typically only reach around 1000 lumens. Long irradiation duration and good stability: Halogen bulbs rely on tungsten filaments for illumination, which can evaporate or fuse under prolonged high temperatures. Xenon headlights, lacking tungsten filaments, avoid this issue and have a service life of approximately 2000-3000 hours. Energy efficiency: Factory-installed halogen headlights typically consume about 60W of power, whereas HID (High-Intensity Discharge) headlight systems, operating with a ballast, require only 35W to power the xenon bulbs. This significantly reduces the load on the vehicle's electrical system and correspondingly enhances vehicle performance. Types of xenon headlights: Xenon headlights are generally categorized into 120V, 240V, and 380V, with wattages ranging from tens to thousands of watts. Automotive xenon headlights are improved versions of industrial xenon lights, operating at 12V with wattages of 35W and 55W. Most vehicles use 35W bulbs, while a few employ 55W bulbs, typically installed in high beams.
I know the Cadillac ATS-L's headlight bulb model is generally H11, which is a standard halogen bulb suitable for low beam. However, depending on the model year, higher trim levels may come with LED headlights that don't require bulb replacement. It's best to check the manual or open the hood to look at the label for confirmation before purchasing. The H11 bulb is easy to identify—it has a white plastic connector head and a lifespan of about 3-5 years. If the light doesn't turn on, it may have burned out and needs replacement. I've replaced this type of bulb several times and recommend choosing genuine products like Philips H11, priced around 30-50 RMB each, available online or at auto parts stores. Doing it yourself saves on labor costs. Don't forget to check the fuse box—a blown fuse often accompanies other electrical issues. Regular maintenance can prevent nighttime emergencies. Misaligned lights can affect driving safety, so prioritize fixing them and don't overlook the details.
