Lemon Law CA and Intermittent Power Loss Issues

Intermittent power loss can turn an ordinary drive into a stressful situation—think hesitation when merging, sudden “limp mode,” or brief stalls that come and go without warning. If this sounds familiar, you may be wondering how California’s Lemon Law applies. At ZapLemon, we help consumers understand how recurring, hard-to-diagnose issues like intermittent power loss fit into Lemon Law CA, and what steps you can take to protect your rights. The information below is educational and general; a consultation is essential for guidance about your specific situation.

What Intermittent Power Loss Means in CA Lemon Law

Intermittent power loss is a recurring drop in acceleration or overall engine/drive power that happens unpredictably. Common examples include a gas vehicle that hesitates when you press the pedal, a transmission that randomly refuses to upshift, a hybrid that unexpectedly switches to reduced power, or an EV that enters “limp mode” without a clear cause. Because these symptoms come and go, service departments may not see them during short test drives—even though they significantly affect safety, use, and value.

Under California’s Song-Beverly Consumer Warranty Act (often called the California Lemon Law), a vehicle may qualify as a “lemon” if a defect covered by the manufacturer’s warranty substantially impairs use, value, or safety and the manufacturer (through its authorized dealer) cannot fix it after a reasonable number of repair attempts. Intermittent problems still count: a defect doesn’t need to occur every time to be covered. The law can apply to new cars and many used cars that are still under the original manufacturer’s warranty or a certified pre-owned warranty.

California also has a “lemon law presumption” that can help consumers during the first 18 months or 18,000 miles (whichever comes first). Generally, the presumption may be triggered if: there are two or more attempts to repair a defect that could cause death or serious bodily injury; four or more attempts for other defects; or the vehicle is in the shop for 30 or more cumulative days for warranty repairs. Intermittent power loss—because it can create dangerous situations like losing power while crossing traffic—often raises safety concerns, but whether the presumption applies depends on your facts and documentation.

Steps to Document Repairs and Protect Your Rights

Start by tracking every episode. Note the date, time, speed, weather, fuel/battery level, warning lights, and what you were doing (merging, climbing a hill, stop-and-go traffic). If safe, record short videos showing dash lights, RPM swings, or loss of acceleration. Keep a simple log on your phone; these details can help technicians reproduce the issue and show a pattern of a covered defect under Lemon Law CA.

Always take the vehicle to an authorized dealership for diagnosis and repair while your warranty is active. Ask that your concern be written on the repair order in your own words (for example, “customer states intermittent loss of power at highway speeds; check engine light sometimes flashes”). Before you leave, make sure the repair invoice includes your complaint, the technician’s findings, parts replaced or software updates performed, dates in and out, and mileage. Save every repair order, towing receipt, and rental/loaner documentation. Also, check for recalls and Technical Service Bulletins (TSBs), and consider filing a safety complaint with NHTSA if the issue creates a hazard.

Communicate in writing when possible and keep copies—email the service advisor a summary after each visit. Avoid clearing codes or modifying the vehicle; doing so can erase data that helps diagnosis. If the problem persists after multiple visits or your car spends significant time in the shop, consider a consultation with ZapLemon to discuss your options under California lemon law. A consultation is the best way to understand timelines, eligibility, and next steps based on your documentation and warranty status.