Start with the records. Repair orders, warranty documents, mileage, and days out of service are more useful than general assumptions about whether a vehicle qualifies.
Electric vehicles run on code as much as they run on batteries. When software glitches cause charging failures, dashboard blackouts, or driver-assistance errors, everyday life can grind to a halt. In California, the Lemon Law may protect consumers when repeated software malfunctions substantially impair the use, value, or safety of their EV. This article explains how California’s Lemon Law applies to software issues and what evidence to collect if your car’s problems keep coming back.
California Lemon Law for EV Software Malfunctions
California’s Lemon Law—part of the Song-Beverly Consumer Warranty Act—generally requires manufacturers to repair defects covered by the warranty within a “reasonable” number of attempts. If they can’t, the consumer may be entitled to a repurchase or replacement, depending on the facts. This applies to EVs and plug-in hybrids, and it covers software-related defects when those defects are tied to the vehicle’s new-car warranty or certified pre-owned warranty.
Not every software bug qualifies. The law looks at whether the issue substantially impairs the vehicle’s use, value, or safety. In the EV context, examples can include failed over-the-air (OTA) updates that disable key functions, battery management software that causes sudden range loss or unexpected shutdowns, charging software that prevents home or DC fast charging, repeated camera or sensor failures affecting safety systems, or infotainment crashes that disable HVAC, defroster, or backup camera controls integrated into the screen.
The “reasonable” opportunity to repair depends on the circumstances, including the number of repair attempts and how long the car is out of service. Some safety-related problems may require fewer attempts. Consumers often encounter dealership notes like “no trouble found,” firmware re-flashes, or “software pending” entries before a fix sticks. While some manufacturers offer informal remedies or arbitration, outcomes vary and depend on specific facts and timelines. This overview is for general information only—speak with a qualified attorney for guidance on your situation.
What to Document: Updates, Repairs, and Error Logs
Software cases turn on details. Track every OTA update: date and time, version number, release notes (if available), whether the install succeeded or failed, and what changed afterward. If a malfunction started after a specific update—or disappears and then returns with another—write that down. Screenshots of error messages, short videos of the behavior, and photos of dashboard warnings can be valuable, especially for intermittent glitches.
Keep complete service records. Save each repair order and invoice with the complaint, cause, and correction, plus mileage in and out. Note days the vehicle was out of service, loaner or rental use, and any parts ordered or backordered. Ask the service advisor to include your full description of the symptoms, even if the tech cannot reproduce them that day. Preserve emails, texts, and app messages with the dealer or manufacturer support, and consider sending key summaries by email so there is a dated paper trail.
Capture the data you can access. Many EVs store error codes and trip or charging logs; ask the service center to print or attach diagnostic reports to your file. Keep a simple log of failed charging sessions (station location, network, time, SOC, error shown), phantom drain events (start/end SOC over time), and driver-assistance faults (conditions, speed, lane markings, weather). Avoid modifying or “jailbreaking” vehicle software, which can affect warranty coverage. Keep your warranty booklet handy, check for Technical Service Bulletins and recalls, and install manufacturer-recommended updates unless told otherwise by a qualified service professional.
Persistent EV software malfunctions can be more than an annoyance—they can interfere with charging, safety systems, and everyday usability. California’s Lemon Law may offer remedies when a manufacturer cannot fix covered defects after a reasonable number of attempts, but results depend on the facts, the warranty, and the repair history. Good documentation—updates, service visits, and error logs—can make a meaningful difference in any evaluation.
Attorney Advertising. This post is for informational purposes only and is not legal advice. Reading this page does not create an attorney-client relationship with ZapLemon or any attorney. Legal outcomes are not guaranteed and depend on your specific facts. If you need advice for your situation, consult an attorney licensed in your jurisdiction.
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Attorney advertising. General information is not legal advice and does not create an attorney-client relationship. No result is promised or guaranteed.