Start with the records. Repair orders, warranty documents, mileage, and days out of service are more useful than general assumptions about whether a vehicle qualifies.
Hazard lights are a small button with big responsibility. When they fail—flash irregularly, don’t activate, or work only sometimes—they can turn a roadside stop or an emergency into a risky situation. If your vehicle’s hazard lights keep malfunctioning despite multiple trips to the dealership, you may be wondering whether California’s Lemon Law can help. Below, ZapLemon explains how the law can apply to hazard light defects and what to document to protect your rights.
When Hazard Lights Fail: Does CA Lemon Law Apply?
California’s Lemon Law (the Song-Beverly Consumer Warranty Act) protects consumers when a vehicle has a defect covered by the manufacturer’s warranty that substantially impairs the vehicle’s use, value, or safety—and the manufacturer can’t fix it after a reasonable number of repair attempts. Hazard lights are a core safety feature: they warn other drivers that your vehicle is stopped, slow-moving, or in distress. Repeated failures—such as hazards that don’t illuminate, flash only on one side, blink erratically, or cut out after a few seconds—can affect safety and value, and may meet the Lemon Law’s threshold depending on the circumstances.
Whether your hazard-light issue qualifies can depend on timing, warranty coverage, and how often the defect returns. The Lemon Law typically applies to new vehicles (and many used vehicles still under the manufacturer’s new-vehicle warranty or a certified pre-owned manufacturer warranty). California’s “presumption” guidelines generally look at issues that arise within the first 18 months or 18,000 miles, but claims can exist outside those limits if warranty repairs continue to fail. If the hazard light defect is safety-related and the dealer has had a reasonable number of chances to repair it, the law may provide remedies.
A “reasonable number” isn’t a fixed number, but the law offers guideposts: multiple repair attempts for the same issue, or the vehicle being out of service for an extended time, may be enough. Remedies can include repurchase or replacement, but outcomes depend on the facts of each case and the specific warranty history. The key is to give the manufacturer a fair chance to fix the problem and to keep thorough records. If the hazard light problem persists, a consultation with a Lemon Law attorney can help you evaluate options for your situation.
What to Document and Expect in Hazard Light Repairs
Start by documenting every incident. Note the date, mileage, weather, and what you were doing when the hazard lights failed—for example, “no lights when parked on shoulder,” “flashed rapidly only on right side,” or “worked cold, failed after 15 minutes of driving.” Short videos can be invaluable. At each service visit, make sure the repair order clearly states your complaint in your own words, the technician’s findings, parts replaced, and whether the issue was duplicated. Keep copies of all repair orders, invoices, and any loaner or rental paperwork to track days out of service.
Expect the dealership to check common causes, which can include a faulty hazard switch, flasher module, body control module (BCM), a short or open in the wiring harness, bad grounds, moisture intrusion in lamp assemblies, or software issues affecting the lighting network. If the dealer says “could not duplicate,” ask what steps they took to test the system and request they keep the car longer if the failure is intermittent. Ask whether there are technical service bulletins (TSBs) or recalls for your VIN and request printouts for your records.
To protect your rights, notify the manufacturer when the issue persists—many warranty booklets include a phone number or online portal to open a case. Avoid installing aftermarket lighting or electrical accessories while the defect is being diagnosed, as modifications can complicate warranty claims. Check your VIN for recalls at NHTSA.gov/recalls, and review your warranty booklet to confirm coverage terms. If repeated repair attempts don’t resolve the hazard light failure, consider speaking with a Lemon Law attorney to review your documentation and discuss next steps.
Malfunctioning hazard lights are more than an inconvenience—they’re a safety concern that can undermine confidence in your vehicle. California’s Lemon Law may apply when a warranty-covered defect affecting safety persists after reasonable repair attempts, but every case turns on its facts, timing, and documentation. Keeping detailed records and giving the manufacturer fair opportunities to fix the issue are essential steps.
Disclaimer: This post is attorney advertising, intended for general informational purposes only, and is not legal advice. Reading this page does not create an attorney–client relationship. Laws and outcomes vary by situation; consult an attorney about your specific circumstances.
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