Software increasingly runs today’s cars—controlling everything from infotainment and navigation to driver-assistance features and over-the-air updates. When those systems misbehave, drivers can be left with screens that reboot, safety aids that brake unexpectedly, or phones that won’t stay connected. If you’re in California and your vehicle’s software won’t stay fixed under warranty, you may be wondering whether the state’s lemon law can help. Here’s what to know, in plain language.
Can Software Glitches Qualify Under California Lemon Law?
California’s lemon law (the Song-Beverly Consumer Warranty Act) can apply to software-related defects when they’re covered by the manufacturer’s warranty and they substantially impair the vehicle’s use, value, or safety. “Substantial” doesn’t mean perfection; it means the problem is serious enough to matter in everyday driving. A backup camera that intermittently blacks out, an infotainment system that constantly freezes, or advanced driver-assistance that triggers phantom braking may rise to that level, especially if the dealer cannot fix the issue after a reasonable number of attempts.
The law generally requires that the manufacturer, through an authorized dealer, gets a fair chance to repair the problem. There isn’t a single magic number of repair attempts, but California does have a “lemon law presumption” that may apply within the first 18 months or 18,000 miles if certain thresholds are met—such as multiple repair attempts (often four for non-safety issues, two for serious safety issues) or the vehicle being out of service for 30 or more cumulative days. Even if those benchmarks aren’t met, a vehicle can still qualify based on the overall repair history and impact on use, value, or safety.
Software is part of the vehicle, not a separate gadget. That means malfunctions tied to firmware, control modules, over-the-air updates, or bundled subscriptions can be relevant under the warranty. Examples include repeated failures of Apple CarPlay/Android Auto, navigation that loses GPS lock, instrument cluster resets, battery management software that limits performance, or driver-assist features like lane-keeping or adaptive cruise acting unpredictably. What matters is whether the defect persists despite warranty repairs and meaningfully affects your driving experience or safety.
Steps to Take When Infotainment or Driver-Assist Fails
Start by documenting everything. Note the date, mileage, weather, and what the system was doing when the problem occurred. If safe, take photos or short videos of error messages, black screens, or misbehavior (like sudden braking with no obstacle). When you visit the dealership, clearly describe the symptoms and ask that the repair order list your complaint in detail, including software version numbers, diagnostic codes, and any updates or reprogramming performed. Keep copies of every repair order, invoice, and work note, even if the visit ends with “no trouble found.”
Give the manufacturer an opportunity to fix the issue through its authorized dealer network. Ask whether a Technical Service Bulletin (TSB) or software patch exists, whether a field technician will be involved, and whether a loaner is available if the vehicle must stay overnight. Track the cumulative days your car is in the shop and each repair attempt number. If an over-the-air update is pushed to your car, record the date, version, and results—especially if the update fails, rolls back, or introduces new issues.
Review your warranty booklet to confirm coverage periods for infotainment, electronics, and powertrain-related software. If problems continue, consider escalating through the manufacturer’s customer care and obtaining a case number. Some warranties reference arbitration programs; learning whether those apply to your situation can be helpful. Throughout the process, remember this is general information—not legal advice. If you think your vehicle might meet California lemon law criteria, contacting a lemon law attorney for a consultation can help you understand your options.
Persistent software problems can turn a new car into a daily frustration, especially when safety features behave unpredictably or essential systems won’t stay fixed. California’s lemon law may offer relief when covered defects substantially impair your vehicle’s use, value, or safety and the manufacturer cannot repair them within a reasonable number of attempts. Careful documentation, consistent dealership visits, and an understanding of your warranty are key steps toward clarity.
This post is for informational purposes only and does not constitute legal advice. Reading this blog does not create an attorney-client relationship, and past results do not guarantee a similar outcome. Every situation is different; a consultation is necessary for advice about your specific facts.
If you believe your vehicle may qualify as a lemon, contact ZapLemon at (844) 927-5366 or https://zaplemon.com. Our team can review your repair history, explain your options under California’s lemon law, and discuss next steps.