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.
Today’s cars rely on advanced safety systems—automatic emergency braking, lane-keeping assist, blind-spot monitoring, adaptive cruise control, and more. When those features glitch, the problem isn’t just annoying; it can be unnerving and potentially dangerous. As a California-focused lemon law firm, ZapLemon regularly hears from drivers dealing with phantom braking, disabled cameras, or safety warnings that won’t clear after multiple dealer visits. Below, we explain how California’s lemon law treats safety feature malfunctions and what steps you can take to protect your rights and your safety.
Safety Feature Glitches Under California Lemon Law
Modern vehicles are computers on wheels. Safety technology (often called ADAS) depends on sensors, cameras, radar, software, and sometimes over-the-air updates. When something misfires, drivers may experience sudden braking for no reason, “ping-ponging” between lane markers, disabled rearview cameras, incorrect speed-limit readings, or persistent alerts that the system is “temporarily unavailable.” These glitches can shake confidence in the car and affect how safe it feels to drive—especially in heavy traffic or poor weather.
Under California’s Song-Beverly Consumer Warranty Act (the California Lemon Law), a vehicle may qualify as a “lemon” when: (1) the defect appears during the manufacturer’s warranty; (2) the manufacturer or its authorized dealer is given a reasonable number of opportunities to fix it; and (3) the problem materially affects the vehicle’s use, value, or safety. Safety-related issues—like malfunctioning automatic emergency braking, unreliable lane-keeping, or repeatedly failing backup cameras—often go to the heart of “use, value, or safety.” There’s no single rule for how many repair attempts are “reasonable,” and serious safety issues sometimes require fewer attempts. Time out of service also matters; if your car spends significant cumulative days in the shop, that can count, too.
Examples we see include: cameras fogging or failing after rain, radar units misaligned after minor bumps or software updates, adaptive cruise control disengaging randomly, “service driver assist” warnings that never resolve, and repeated “unable to duplicate” repair notes despite persistent symptoms. Some issues stem from software versions that need patching; others involve hardware like sensor brackets, wiring harnesses, or control modules. Every case is fact-specific. An attorney can review your repair history, warranty coverage, and timeline to help you understand potential remedies under California law, including repurchase, replacement, or a cash-and-keep settlement, where appropriate and available.
When Safety Tech Fails: What to Do and Document
First, prioritize safety. If a feature behaves unpredictably, follow your owner’s manual and consider turning off the affected system until a dealer evaluates it. Schedule service with an authorized dealership and describe the exact circumstances: speed, road type, weather, lane markings, traffic, and whether cruise control or other features were active. If possible, ask a technician to ride along to reproduce the issue. Request that the dealer check for diagnostic trouble codes (DTCs), pull sensor calibration logs, and verify software and firmware versions.
Build a thorough paper trail. Keep copies of every repair order, invoice, and warranty printout. Insist that your service documents list your complaint in your own words, note mileage in/out, and state what was tested, updated, or replaced—even when the result is “could not duplicate.” Take dated photos or short videos of warnings, erratic behavior, or camera blackouts. Note over-the-air update dates and version numbers. Ask if any technical service bulletins (TSBs) apply. Check for recalls on NHTSA.gov, and consider filing a safety complaint there if the issue is persistent. Avoid clearing alerts, disconnecting the battery, or factory-resetting infotainment before service—those actions can erase useful data.
If the problem keeps returning, escalate. Contact the manufacturer to open a case number and request a field technician evaluation, especially for intermittent ADAS problems. Review your warranty booklet for any required dispute program or arbitration and note deadlines. California has time limits for lemon claims, and federal warranty law (the Magnuson-Moss Warranty Act) may also apply in some situations. Because every situation is unique, consider consulting a California lemon law attorney who can explain your options based on your records and timeline. ZapLemon can review your documentation, help you understand the process, and discuss next steps tailored to your circumstances.
Need a case-specific review?
Use the case-review form to share the warranty, repair orders, dates, mileage, and supporting facts an attorney would need to evaluate, or call (844) 927-5366.
Attorney advertising. General information is not legal advice and does not create an attorney-client relationship. No result is promised or guaranteed.