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.
Advanced Driver Assistance Systems (ADAS) like lane-keeping, adaptive cruise control, and automatic emergency braking are now standard in many new cars. When these features glitch—phantom braking, warning lights, or “system unavailable” messages—they can affect both safety and confidence behind the wheel. Below, we explain how California lemon law firms think about ADAS problems and what you can do to document issues before speaking with a lawyer at ZapLemon.
How California Lemon Law Firms View ADAS Glitches
California lemon law focuses on defects covered by a manufacturer’s warranty that substantially impair a vehicle’s use, value, or safety. ADAS faults often fall into the “safety” category because they can either fail to engage when needed or activate at the wrong time. Examples include sudden braking for no reason, lane-keeping that “ping-pongs” the car between lines, or radar/camera failures after a windshield replacement or minor fender bender that require recalibration.
Lemon law firms evaluate the pattern: how often the problem occurs, whether the dealer can verify it, what repairs or software updates were attempted, and how long the vehicle was out of service. They look closely at repair orders, technician notes, calibration reports, and any manufacturer technical service bulletins (TSBs) to see if the issue is known and whether the manufacturer had a fair opportunity to fix it under warranty. Intermittent ADAS issues can be challenging, so clear documentation and reproducible symptoms matter.
California’s Song-Beverly Consumer Warranty Act includes a presumption (in the first 18 months or 18,000 miles, whichever comes first) that may apply if the manufacturer has had a reasonable number of attempts to fix a problem—often described as two or more attempts for a safety-related defect, four or more attempts for other issues, or 30 or more total days out of service for warranty repairs. These are guidelines, not guarantees, and every situation is fact-specific. A consultation is the best way to understand how these rules might apply to your ADAS concerns.
What to Document and When to Call ZapLemon
Start a simple log the moment an ADAS issue appears. Note dates, mileage, driving conditions (speed, weather, road type), dashboard messages, and what the system did (for example, “phantom braking on freeway with no traffic”). Save photos or short videos of warning lights or unexpected behavior when safe to do so. Keep copies of all repair orders, calibration printouts after windshield or bumper repairs, OTA/software update notes, recall notices, loaner/rental receipts, and any messages from the dealer or manufacturer.
Use available tools to stay informed. Check your VIN on the NHTSA recall site to see if your vehicle has an ADAS-related recall. Ask the service department whether there are TSBs or software patches for your specific model and build date. If the dealer says “no problem found,” politely request that the repair order still list your reported symptom and the steps taken to inspect or test the system; that record can be important if the issue continues.
Consider contacting ZapLemon if ADAS problems persist after multiple repair attempts; if the vehicle spends significant time in the shop; or if the defect creates a real safety concern, such as repeated sudden braking, unpredictable lane-keeping, or systems that frequently shut off and display “temporarily unavailable.” If your situation falls within the 18 months/18,000 miles presumption window—or even outside it—you may want a consultation to understand your options. Speaking with an attorney does not mean you must file a claim; it’s a chance to get clarity about your rights and next steps.
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.