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Modern vehicles are rolling computers. Between touchscreen infotainment systems, driver-assistance software, and complex electrical architectures, today’s cars have more lines of code than many aircraft. That sophistication comes with a cost: when something goes wrong, it can be nearly impossible to diagnose, and the dealership may cycle through repairs without ever fixing the root problem.
If your vehicle keeps returning to the shop for software crashes, electrical shorts, or systems that simply refuse to work as advertised, you may have a lemon on your hands. California’s Lemon Law is broader than many people realize, and it applies to far more than engine failures and transmission breakdowns.
What Does California’s Lemon Law Actually Cover?
California’s Lemon Law covers any defect that substantially impairs a vehicle’s use, value, or safety — including software and electrical problems.
The Song-Beverly Consumer Warranty Act, California’s primary lemon law, requires manufacturers to repair, replace, or refund a vehicle when a defect substantially impairs its use, value, or safety and cannot be fixed after a reasonable number of repair attempts. The law is codified under California Civil Code sections 1793.2 and following.
Critically, the law does not limit coverage to mechanical components. It applies to any nonconformity to the manufacturer’s written warranty. If your infotainment system, electronic power steering, automatic emergency braking, or battery management software is defective and covered under your new vehicle warranty, it falls squarely within the law’s reach.
Do Software Bugs Count as a Nonconformity?
Yes. A software defect that impairs how you use or enjoy your vehicle, or that creates a safety risk, can qualify as a nonconformity under the Song-Beverly Act.
This is where manufacturers often push back. They may argue that a software glitch is a minor inconvenience, not a defect. But the statute does not require a complete breakdown. A defect qualifies when it substantially impairs the vehicle’s use, value, or safety. Courts and arbitrators have found that recurring software faults, including systems that freeze, misfire, or fail to engage, can meet that threshold.
Common software and electrical issues that may qualify include:
- Infotainment or navigation systems that freeze or crash repeatedly
- Advanced driver-assistance systems (ADAS) that malfunction or fail to engage
- Phantom warning lights triggered by faulty sensors
- Power window or door lock failures are tied to electrical modules
- Battery management software problems in electric or hybrid vehicles
If any of these issues have sent your car back to the dealership more than once, or if you have received over-the-air (OTA) software updates that failed to resolve the issue, document every attempt carefully.
How Many Repair Attempts Does California Require?
California law creates a presumption that a vehicle is a lemon after two repair attempts for a serious safety defect , four attempts for other defects, or if the vehicle is out of service for a cumulative total of 30 or more days for warranty repairs within 18 months or 18,000 miles.
Under California Civil Code section 1793.22, the lemon law presumption applies when the manufacturer or dealer has had at least four opportunities to repair the same defect, at least two opportunities if the defect could cause death or serious bodily harm, or when the vehicle is out of service for a cumulative total of more than 30 calendar days for repairs, during the first 18 months or 18,000 miles of ownership, whichever comes first.
For electrical and software problems, that two-attempt threshold is especially relevant. A vehicle with a malfunctioning automatic emergency braking system or a battery fault in an electric vehicle could pose genuine safety risks. If the dealer has failed to fix it twice, you may already qualify.
It is worth noting that this presumption makes your case stronger, but it is not the only path to relief. Vehicles outside those limits, or cases with fewer attempts, may still qualify under the flexible “reasonable number of attempts” standard and the totality of the circumstances.
What Remedies Are Available?
If your vehicle qualifies under the Song-Beverly Act, you may be entitled to a full replacement or a refund of what you paid, including taxes, registration fees, and finance charges.
California law gives manufacturers two options when a vehicle qualifies: either replace it with a comparable new one or buy it back. A buyback, often called a repurchase, includes the full contract price, down payment, monthly payments, taxes, registration fees, and incidental costs such as rental car expenses. The manufacturer may deduct a mileage offset for use before the first repair attempt.
Manufacturers are also required to pay your attorney fees if you prevail, which means pursuing a lemon law claim typically costs you nothing out of pocket. That fee-shifting provision is one of the most consumer-friendly features of California law.
Why San Diego Vehicle Owners Face Unique Challenges
San Diego’s roads, from the coastal stretches of Interstate 5 to the inland heat along Highway 94, put consistent stress on vehicle electronics. High ambient temperatures accelerate battery degradation and can trigger errors in thermal management software in electric and hybrid vehicles. Stop-and-go commuting through Mission Valley or downtown stresses power systems in ways that intermittent dealer test drives rarely replicate.
These real-world conditions matter when building a claim. Repair records tied to specific driving patterns and local environmental factors can help establish that a defect is recurring and substantial, not a one-time fluke.
How San Diego Lemon Law Can Help
Our firm focuses on California lemon law claims for San Diego drivers dealing with defects that manufacturers refuse to take seriously. We handle the paperwork, deadlines, and manufacturer negotiations so you can focus on your daily life.
If your vehicle has repeated software or electrical failures that the dealership cannot resolve, call us at 619-434-0819 or contact us to discuss your situation. There is no cost to you unless we recover on your behalf.
Last updated: August 2026
