Lemon Law CA and Software Glitch Complaints

Modern vehicles run on millions of lines of code. From infotainment and navigation to brake assist and battery management, software controls critical functions that affect how your car drives and how safe it feels. When those systems glitch, California’s Lemon Law may come into play. Below, ZapLemon explains how the California Lemon Law can apply to software-related vehicle defects and outlines practical steps for reporting software glitch complaints in California. This article is for general informational purposes only and is not legal advice.

How California Lemon Law Applies to Software Bugs

California’s Lemon Law (part of the Song-Beverly Consumer Warranty Act) protects consumers when a vehicle has a defect covered by warranty that the manufacturer can’t fix after a reasonable number of attempts. A software bug can be a “nonconformity” if it substantially impairs the use, value, or safety of the vehicle. That includes issues tied to drivability (stalling, loss of power due to ECU errors), safety features (airbag or ABS warning lights from software faults), or consistent malfunctions that interfere with normal use (instrument cluster blackouts, cameras or sensors failing).

Software issues often look different from traditional mechanical failures. You might experience an infotainment system that constantly reboots, a rearview camera that intermittently goes black, phantom braking from driver-assistance software, or over-the-air (OTA) updates that introduce new problems. If those problems persist despite multiple repair attempts under warranty, they may fall within the scope of California Lemon Law remedies. The law doesn’t require the defect to be mechanical; what matters is the impact on use, value, or safety.

California also has a “lemon law presumption” for certain new vehicles within an early ownership period. While every case is fact-specific, the presumption generally looks at factors like how many times the car has been in for repairs, whether the defect is safety-related, and the total days the car has been out of service. Even if your situation doesn’t fit the presumption, you may still have protections under the broader statute. Because software bugs can be intermittent, meticulous documentation is especially important to show the ongoing nature and impact of the problem.

Steps to Report Software Glitch Complaints in CA

• Document the symptoms. Note dates, mileage, weather, and driving conditions when the glitch appears. Take short videos or photos if it’s safe to do so (e.g., screen freeze, warning lights, backup camera failure). If your vehicle provides version numbers for software or maps, record those too. Intermittent issues are easier to prove when you can show a pattern.

• Visit an authorized dealership for diagnosis and repair under warranty. Ask the service advisor to document your specific complaint in your own words and to include software version numbers, fault codes, and any technical service bulletins (TSBs) or OTA updates performed. Request a detailed repair order every time—even if the dealer “could not duplicate” the concern. Keep all work orders, invoices, and recall/TSB printouts in one file.

• Follow up and escalate. If the problem persists, return to the dealer and clearly reference prior repair orders. Contact the manufacturer’s customer care line to open a case number and keep notes of each call. You can also file a safety complaint with NHTSA at safercar.gov if the glitch affects safety (e.g., ADAS phantom braking, camera/sensor failures). Some warranties require you to try a dispute resolution program (like BBB Auto Line) before pursuing other remedies—check your warranty booklet for details.

• Track downtime and impact. Note every day the vehicle is in the shop and how the issue affects your use (missed work, inability to use features you paid for, loss of confidence in safety). If you receive loaners or rental reimbursement, keep those records. If the defect repeatedly returns after multiple repair attempts or the vehicle is out of service for extended periods, consider consulting with a California lemon law attorney to understand your options.

• Consider a consultation. An attorney can explain how the California Lemon Law may apply to software-centric defects, what evidence usually matters, and how timing and warranty status can affect your rights. Consultation is necessary for legal advice specific to your situation. ZapLemon is available to review your documents, timeline, and repair history and to help you understand next steps.