California Lemon Law for Camera and Sensor Faults

Advanced driver-assistance systems (ADAS) rely on cameras and sensors to help with safety features like lane keeping, forward collision warning, automatic emergency braking, adaptive cruise control, and blind-spot monitoring. When those components misread the road, lose calibration after a windshield replacement, or fail intermittently, everyday driving can become stressful and unsafe. If your vehicle is under warranty and these issues keep coming back, California’s Lemon Law may provide options—but the path depends on your documentation, your warranty, and the specifics of your defect history.

California Lemon Law for ADAS Camera/Sensor Faults

California’s Lemon Law (part of the Song-Beverly Consumer Warranty Act) generally applies to new vehicles—and in many cases used or certified pre-owned vehicles—while they’re covered by the manufacturer’s warranty. The law is designed to protect consumers when a defect substantially impairs the vehicle’s use, value, or safety and the manufacturer can’t repair it after a reasonable number of attempts. Camera and sensor malfunctions can qualify because they directly affect safety. Examples include a forward camera that loses lane lines in normal daylight, a radar that triggers false collision warnings, blind-spot sensors that drop out, or ADAS systems that refuse to calibrate after windshield or bumper repairs.

What counts as a “reasonable number” of repair attempts depends on the facts. California’s Lemon Law includes a rebuttable presumption during the first 18 months or 18,000 miles: as a general guide, two or more repair attempts for a defect likely to cause death or serious bodily injury, four or more attempts for other recurring defects, or more than 30 total days out of service may trigger the presumption. Software updates, module replacements, and calibration attempts are typically considered repair attempts; even visits marked “no problem found” can be relevant. These are not hard-and-fast rules, and the presumption is only one pathway—vehicles can still qualify outside those thresholds depending on evidence.

If a vehicle meets the law’s requirements, potential remedies can include a repurchase (refund with a mileage offset), replacement, or other relief. Manufacturers may also offer goodwill repairs or extended coverage, but those offers do not limit your rights under the law. Because outcomes turn on warranty terms, timing, repair records, and how severe the safety risk is, it’s wise to speak with a professional. This article is for general information only and is not legal advice; a consultation is necessary to understand your options.

Steps to Document Camera and Sensor Defects

Start by capturing what you experience, not just what you think the fix should be. Write down dates, mileage, weather, road conditions, and exactly what happened (for example, “automatic emergency braking activated with no car ahead at 45 mph on dry pavement,” or “lane departure unavailable after 20 minutes of highway driving in clear daylight”). When safe, take photos or short videos of dash warnings or error messages. Note whether the issue appears after a windshield replacement, body repair, car wash, or software update—those details help connect the dots with calibration and sensor alignment.

At every service visit, ask for a complete repair order that shows your complaint (“customer states”), the technician’s findings, diagnostics, and all work performed. For ADAS issues, request copies of pre- and post-scan reports, diagnostic trouble codes (DTCs), and ADAS calibration printouts or screenshots showing pass/fail and target IDs. Keep invoices for towing, rentals, rideshares, and any out-of-pocket expenses. If the dealer can’t duplicate the concern, ask them to note that in writing along with the test conditions used; that entry still helps build a timeline.

Protect your claim by avoiding modifications that could confuse the diagnosis, such as aftermarket bumpers, grilles, or windshield glass without proper calibration. After each repair, test the features in a safe, legal environment and record whether the problem remains. If issues keep recurring, open a case with the manufacturer’s customer care line and write down the case number. Track how many total days your vehicle is out of service. When in doubt, consult a California lemon law attorney to review your history. ZapLemon can evaluate your situation and explain next steps specific to your case.