Lemon Law and Used Cars for Poor Headlight Alignment

Headlight aim that’s too high, too low, or pointed off to one side can make night driving stressful and unsafe. If you bought a used car in California and keep fighting poor headlight alignment, you may wonder whether the lemon law can help. Below, ZapLemon explains how California’s lemon law treats used vehicles, what counts as a defect, and what steps to take if repairs aren’t sticking.

Does Lemon Law Cover Used Cars with Misaligned Headlights?

California’s lemon law (the Song-Beverly Consumer Warranty Act) can apply to used cars, but coverage usually depends on warranty status. If your used vehicle is still under the original manufacturer’s new-vehicle warranty, a certified pre-owned (CPO) warranty, or a dealer-provided warranty, the law may protect you. Keep in mind that California’s protections measure time and mileage from when the car was first delivered to any buyer, not from when you purchased it used. Vehicles sold “as-is” by private sellers generally are not covered, though other consumer laws may sometimes apply.

Poor headlight alignment can be more than an annoyance—it can be a safety-related defect. If your beams don’t light the road ahead, blind oncoming traffic, or drift out of aim after each visit to the shop, that can substantially impair the car’s use, value, or safety, which is the key lemon-law standard. Examples include adjusters that won’t hold, mounting brackets or housings that are loose after warranty body work, moisture inside the headlight that causes shifting, or an adaptive lighting system that mis-aims after software updates. If misalignment stems from undisclosed collision damage or aftermarket modifications, different legal paths may be involved, and coverage can get more complicated.

To qualify under the lemon law, the manufacturer (through an authorized dealer) must usually be given a reasonable number of chances to fix the problem. California’s “lemon law presumption” offers guidance during the first 18 months or 18,000 miles from original delivery: two or more repair attempts for a serious safety issue, four or more repair attempts for most problems, or 30+ total days out of service. You can still have a valid claim outside that window; you just may not get the presumption. Remedies can include repurchase, replacement, or a negotiated cash settlement depending on the facts, but outcomes vary and require a case-specific evaluation.

Signs of a Defect, Records to Keep, and Next Steps in CA

How do you spot a real alignment problem versus normal variance? Watch for one beam sitting higher than the other, a cutoff line aimed far too close to the bumper, or oncoming drivers consistently flashing their high beams at you. Look for dash warnings on vehicles with adaptive or auto-leveling systems, and notice if the aim drifts after bumps or over time. A quick at-home check is to park on level ground about 25 feet from a wall at night and look for an even, consistent cutoff pattern; big differences left-to-right or up-and-down suggest a problem.

Documentation can make or break a warranty or lemon-law claim. Save every repair order and invoice, including “no problem found” or “cannot duplicate” notes, as well as dates, mileage in/out, and the number of days your car stayed at the shop. Take photos or short videos of your beam pattern against a wall, record nighttime test drives if safe, and keep any correspondence with the dealer or manufacturer. Maintain warranties, TSBs or recall notices, and any dealer “safety inspection” reports. Avoid installing aftermarket headlight kits or suspension lift/lowering parts while the issue is being diagnosed, as those can be blamed for mis-aim.

Next steps in California typically include confirming warranty coverage using your VIN with the manufacturer or a dealer, then booking a diagnosis at an authorized dealership. Describe the safety impact in plain terms—“I can’t see road signs at night,” “other drivers flash me,” “aim won’t hold”—and ask that the repair order accurately capture your concerns. If the problem isn’t fixed after multiple attempts or your car sits in the shop a long time, escalate to the manufacturer’s customer care line, request a case number, and consider filing a safety complaint with NHTSA. At any point, you can contact ZapLemon for a consultation to understand your options under California law.