Today’s cars ship with “phone-as-key,” remote start by app, live traffic navigation, over-the-air updates, and subscription-based safety features. When those features don’t work at delivery, many California buyers wonder whether the state’s Lemon Law covers software and app problems. Below, ZapLemon explains how the California Lemon Law can apply to non-functional app features at delivery, and what you can do to document issues the right way.
Do App Feature Failures Count Under CA Lemon Law?
California’s Lemon Law—part of the Song-Beverly Consumer Warranty Act—covers new vehicles with defects that arise under the manufacturer’s warranty and that substantially impair the vehicle’s use, value, or safety. Software and app-based features are part of modern vehicles and, in many cases, are included in the warranty. If a promised feature is non-functional at delivery and the manufacturer can’t fix it after a reasonable number of attempts, it may fall within Lemon Law territory, especially if the issue affects core use, safety, or the vehicle’s value.
Not every glitch qualifies. A minor app hiccup that doesn’t impact driving, safety systems, or resale value may not meet the “substantial impairment” threshold. On the other hand, issues like a phone-as-key system that frequently locks you out, an emergency SOS feature that won’t connect, a backup camera or driver-assistance function disabled by infotainment crashes, or OTA updates that brick screens can weigh more heavily. The facts matter: what was promised, how the defect shows up, how often it repeats, and how it affects your day-to-day use and ownership experience.
Warranty language is also important. Some features rely on cellular networks or paid subscriptions. If the app fails because an account wasn’t activated, coverage lapsed, or you’re outside network range, the manufacturer may treat it differently than a defect in the vehicle’s hardware or software. Still, if the dealer or manufacturer advertised specific features as included at sale, those statements can create express warranties. Ultimately, these cases are fact-specific and require a careful review of your paperwork, warranty booklet, and repair history.
Steps to Document Non-Working Tech at Delivery
Start on day one. At delivery, test the features you were promised: phone-as-key, remote lock/unlock, remote start, navigation and live traffic, Apple CarPlay/Android Auto, Wi‑Fi hotspot, connected safety services, and over-the-air update readiness. If something doesn’t work, take photos or short videos showing the VIN on the dash, current mileage, the app screen with error messages, software/firmware versions, and time/date. Ask the salesperson to list each non-working feature on the due bill (also called a “we‑owe”) or the buyer’s order before you sign.
If the issue persists after you drive home, schedule service promptly and describe the symptoms in plain terms. Request a repair order every time the vehicle is inspected, even if the dealer says “no problem found” or just performs a software reinstall. Keep copies of all repair orders, invoices (even $0 ones), and communications with the dealer or manufacturer. If a tech hotline or regional engineer gets involved, ask that their notes be attached to your file and request the case number. Save subscription receipts and activation confirmations to show the service was active when the feature failed.
Avoid steps that could erase important evidence, like factory resets, unless a dealer directs you in writing. Don’t modify or “jailbreak” infotainment systems. If the dealer says a fix is “coming soon” via an update, ask for that promise in writing along with the estimated timeline and applicable technical service bulletins (TSBs). Keep a simple timeline of dates, mileage, symptoms, and repair attempts. If the defect continues despite reasonable repair opportunities, speak with a California lemon law attorney about your options. A consultation can help you understand whether your situation may qualify under the law without committing you to any particular outcome.
Non-functional app or connected features at delivery can be more than an annoyance—they can affect how you use your car, its safety systems, and its resale value. California’s Lemon Law can apply to software-driven defects when they’re covered by warranty and the manufacturer can’t fix them after a reasonable number of attempts. Careful documentation from day one is your best tool.
This article is for informational purposes only, is not legal advice, and does not create an attorney–client relationship. Past results do not guarantee similar outcomes. For guidance tailored to your situation, schedule a consultation with ZapLemon. If you believe your vehicle may qualify as a lemon, contact ZapLemon at [phone number] or visit [website].