California Lemon Law for False Warning Lights

False dashboard lights can turn every drive into a guessing game. Maybe your check engine light keeps popping on and off, or your airbag or ABS light flashes without any clear fix. In California, recurring false warning lights can signal a warranty problem—and in some cases, may support a claim under the California Lemon Law. This article explains the basics in plain language so you can understand your options. It’s for general information only and isn’t legal advice.

False Warning Lights: When California Lemon Law Helps

False warning lights happen when your dash shows a system alert—like check engine, airbag, ABS, battery/charging, tire pressure, or ADAS/“driver assist” lights—even though technicians can’t find a confirmed defect or the issue returns right after a repair. These lights can be triggered by faulty sensors, software glitches, wiring issues, moisture intrusion, or loose connectors. Even if the car seems to drive “fine,” persistent or intermittent warning lights can affect safety, reliability, and resale value.

California’s Lemon Law (part of the Song-Beverly Consumer Warranty Act) may apply when a new or certified pre-owned vehicle under the manufacturer’s warranty has a defect that the manufacturer or its authorized dealership can’t fix after a reasonable number of attempts, or the vehicle is out of service for repairs for a significant number of days. False warning lights can qualify because they may “substantially impair” the vehicle’s use, value, or safety—especially when the lights involve airbags, brakes, steering, or advanced safety systems. Intermittent lights count; they don’t need to be on continuously.

Practical examples include a check engine light that keeps returning, preventing a California smog check; an airbag light that intermittently disables the system; or repeated software updates that temporarily clear ADAS warnings but the errors come back. These scenarios can lead to multiple warranty visits, towing, and lost time. Both purchased and leased vehicles can be covered, and some emissions-related components may have longer warranty protections. Every situation turns on its facts, and whether a particular vehicle qualifies depends on warranty status, repair history, and the number and nature of repair attempts.

Steps to Take: Documenting False Warning Light Repairs

Good documentation is key. Each time a warning light comes on, take photos or video of the dashboard, note the mileage and date, and describe what you experienced (for example, “airbag light on, no collision, started after rain”). When you visit the dealership, make sure your complaint is written clearly on the repair order in your own words, and ask that stored diagnostic codes, freeze-frame data, and software version numbers be listed on the final invoice. Keep copies of all repair orders, invoices, and any communications with the dealer or manufacturer.

Ask the service advisor whether there are Technical Service Bulletins (TSBs) or recalls related to your symptoms, and request that the TSB number be referenced on your paperwork if applicable. If the dealership can’t duplicate the concern, ask them to note that the light was intermittent and to record any pending or history codes. If the light turns off before your appointment, still bring the car in promptly—intermittent issues are still issues, and timely visits help show a pattern.

If you experience multiple unsuccessful repair attempts or your car is in the shop for an extended time, you may want to explore your rights and options. A consultation with a California lemon law professional can help you understand whether your situation might meet the legal thresholds. ZapLemon can review your warranty status and repair history, explain the process in plain language, and discuss next steps. A consultation is necessary for legal advice specific to your case.

Disclaimer: This post is attorney advertising and is provided for informational purposes only. It is not legal advice and does not create an attorney-client relationship. Past results do not guarantee similar outcomes. For advice about your specific situation, please contact ZapLemon for a consultation.