Lighting problems can be more than a nuisance—they can affect your safety, your ability to drive at night or in bad weather, and the value of your vehicle. Under California’s Lemon Law, repeated lighting defects may play a significant role in whether a car is considered a “lemon.” This article explains, in plain language, how lighting issues fit into California law and how to document them in a way that helps you understand your potential options. It is for general information only and is not legal advice.
What counts as a lighting defect under CA law
Under California’s Song-Beverly Consumer Warranty Act (often called the California Lemon Law), a defect is generally something that substantially impairs the vehicle’s use, value, or safety and persists despite reasonable repair attempts during the warranty period. Lighting systems are core safety components, especially for visibility and signaling. When lighting problems are recurring, hard to fix, or create unsafe driving conditions, they can be part of a potential lemon claim analysis.
Common examples include headlights that flicker, dim, or shut off while driving; adaptive or automatic high-beam systems that mis-aim or fail; intermittent taillights or brake lights; turn signals that don’t function or “hyperflash”; daytime running light failures; dashboard or instrument-cluster backlighting that goes dark; and water intrusion or condensation inside lamp housings leading to repeated bulb or LED module failures. Electrical issues tied to the body control module, wiring harnesses, or fuses—such as repeated blown fuses or unexplained battery drain—can also show up as lighting faults.
Warranty status matters. The issue typically needs to arise and be presented for repair while the manufacturer’s new-vehicle warranty (or sometimes a certified pre-owned limited warranty) is active. California’s “lemon law presumption” can apply within the first 18 months or 18,000 miles if certain repair-attempt or days-out-of-service thresholds are met—for example, two or more attempts for a defect likely to cause serious injury, four or more attempts for other substantial defects, or 30 cumulative days out of service. These are guidelines, not guarantees. Factory recalls and technical service bulletins can be relevant background, and aftermarket lighting modifications can complicate a defect evaluation.
How to document lighting issues for a lemon claim
Good documentation is one of the most important steps you can take. Each time you visit the dealership, ensure the repair order clearly lists your lighting complaint in your own words—e.g., “headlights flicker and turn off after 20 minutes of night driving” or “right brake light intermittently inoperative.” Ask the service advisor to note when the issue occurs (speed, weather, bumps, night/day). Keep copies of every repair order and final invoice, even if the repair is “no trouble found” or a software update. Note dates, mileage in and out, and part numbers or software versions used.
Capture real-world evidence. Short, time-stamped videos can be powerful—record the flicker, outage, or warning messages on the dash. Film both the inside (instrument cluster messages) and outside (headlamps/taillamps) when safe to do so, and consider a quick clip showing the opposite side working for comparison. If the problem is intermittent, keep a simple log of when it happens, road conditions, and weather. If other drivers or passengers witness the failure, jot their names and contact information. Track how many days your vehicle spends at the shop; those days add up.
Preserve communications with the dealer and manufacturer, including emails and texts, and ask for any case number the manufacturer assigns. Check your owner’s manual for warranty terms and avoid modifications that could be blamed for the issue—for example, aftermarket bulbs, tinted lenses, or rewiring can muddy the waters. Do not clear codes yourself before service; let the dealer scan and record diagnostic trouble codes. If you receive recall notices or see technical service bulletins mentioned, save them. If you’re unsure how your records stack up, consider speaking with a California lemon law attorney for a case-specific review.
This article is for informational purposes only, does not constitute legal advice, and reading it does not create an attorney–client relationship. Every situation is different, and outcomes cannot be guaranteed. If you believe your vehicle may qualify as a lemon due to lighting problems or other defects, contact ZapLemon for a consultation at [phone number] or visit [website]. We’re here to help you understand your rights under California law.