When a car’s safety systems act up—airbags that don’t deploy, brakes that pulse or fade, seat belts that won’t latch, or driver-assist warnings that flash constantly—it’s more than an annoyance. It can be dangerous. In California, the Song-Beverly Consumer Warranty Act (often called the California Lemon Law) may offer remedies when safety-related defects persist under warranty despite multiple repair attempts. This article explains how safety system malfunctions fit into the Lemon Law framework, what “reasonable repair attempts” can mean, and the practical steps you can take to protect your rights.
Safety System Defects and California Lemon Law
Safety systems include components designed to prevent or reduce injury: airbags, seat belts and pretensioners, anti-lock braking (ABS), electronic stability control (ESC), brake assist, steering and power steering, tire pressure monitoring, backup cameras, and advanced driver-assistance systems (ADAS) such as automatic emergency braking, lane-keep assist, blind-spot monitoring, and adaptive cruise control. When these systems fail, misfire, or behave inconsistently, the defect can “substantially impair” the vehicle’s use, value, or safety—one of the key thresholds under California Lemon Law.
California’s Lemon Law typically applies to new vehicles (and some used vehicles still under the manufacturer’s express warranty) that have defects the manufacturer cannot repair after a reasonable number of attempts. A safety-related defect can trigger protections faster than a comfort or cosmetic issue. California’s Lemon Law “presumption,” in general terms, may apply in the first 18 months or 18,000 miles if: (1) the vehicle has been subject to two or more repair attempts for a defect likely to cause death or serious bodily injury; or (2) four or more attempts for any defect; or (3) it has been out of service for repairs for a cumulative 30 or more days. These are guidelines, not hard limits—cases vary and the law has nuances.
Real-world examples help illustrate the point. If your ABS or ESC lights repeatedly come on, braking feels erratic, or the system deactivates without explanation, that can be a safety defect. Airbag warnings that persist after “repairs,” seat belts that fail to retract or lock, or ADAS features that slam the brakes or veer the car unexpectedly could also qualify. Even intermittent problems—like a backup camera that flickers out or an AEB system that engages randomly—can be significant if they reduce your confidence in the vehicle’s safety and the dealer cannot fix them within a reasonable number of tries under warranty.
Repairs, Records, and Your Warranty Rights
If you suspect a safety defect, take the vehicle to an authorized dealership for diagnosis and repair while the manufacturer’s warranty is in effect. Explain the symptoms clearly: when they occur, conditions (speed, weather, bumps), and warning lights you saw. Ask the service advisor to write your concerns in detail on the repair order. If there is a recall or a technical service bulletin (TSB), request that the dealer check and document it. Keeping repairs within the authorized network helps ensure the manufacturer is responsible for the work and the records.
Documentation is your ally. Save every repair order and invoice, even if there was “no problem found.” Track dates in and out of service to calculate days the car was unavailable. Note odometer readings, loaner or rental usage, and any parts replaced. If the problem reappears, return promptly and describe that it’s the “same issue.” Consistent records can help show a pattern of a defect that affects safety and that the manufacturer had multiple opportunities to fix it.
Understand the contours of warranty rights. Many California consumers don’t realize that used or certified pre-owned vehicles can still be covered if the manufacturer’s express warranty is active. Normal wear-and-tear or damage from aftermarket modifications may fall outside coverage, but manufacturing defects in safety systems typically do not. Warranty timelines and “reasonable attempts” can be complex, especially with intermittent issues and days-out-of-service calculations. If repairs drag on or you’re unsure whether your situation might qualify under California Lemon Law, consider speaking with a lemon law attorney for guidance tailored to your facts.
This article is for general informational purposes only and is not legal advice. Reading it does not create an attorney-client relationship, and results depend on the specific facts of each case. If you believe your vehicle may qualify as a lemon due to safety system malfunctions, contact ZapLemon for a consultation. Visit our website to get in touch or call the number listed there. We’re here to discuss your situation and your options under California law.