If your car keeps heading back to the shop for the same problem, you may be wondering how to start a California Lemon Law case. California’s Lemon Law—part of the Song-Beverly Consumer Warranty Act—offers protections when a manufacturer cannot fix a substantial defect under warranty after a reasonable number of attempts. This article explains the first steps and the documents to gather so you can make informed decisions about your next move.
Step-by-Step: Starting a Lemon Law Case in CA
First, get familiar with the basics. In California, a vehicle may qualify as a “lemon” when a defect covered by the manufacturer’s warranty substantially impairs use, value, or safety, and the manufacturer or its authorized dealer can’t fix it after a reasonable number of repair attempts. There’s also a “lemon law presumption” that applies to certain issues occurring within the first 18 months or 18,000 miles (whichever comes first), such as multiple repair attempts for the same problem or 30+ cumulative days in the shop. Even if you’re outside those mile/month benchmarks, you may still have rights under the law; the presumption is just one way to help prove your claim.
Next, continue taking the vehicle to an authorized dealer for warranty diagnosis and repair. Each visit should result in a printed repair order that shows your complaint, what the dealer found, and what was done (or not done). Be clear and consistent when describing the symptoms (for example, “vehicle stalls at stoplights,” “transmission hesitates on 2–3 shift,” or “check engine light with misfire code”), and avoid downplaying recurring issues as “normal.” If the problem isn’t fixed, politely request another attempt and keep track of dates, mileage, and time out of service.
When repairs haven’t resolved the defect, formally notify the manufacturer. Many warranty booklets list a phone number or mailing address for customer care or dispute resolution. Consider sending a written notice via certified mail summarizing the issue, repair history, and that the defect persists. Some manufacturers offer or require participation in a free arbitration program described in the warranty booklet. Arbitration isn’t always mandatory or the best option for every situation, so it’s wise to consult a consumer attorney to understand your choices before you decide how to proceed.
Documents to Collect: Repairs, Records, Warranty
Repair paperwork is the backbone of a lemon law claim. Gather every repair order, invoice, or work order from the dealer, including prior owners’ records if available. Each document should show the date in and out, mileage, your stated concern, the dealer’s findings, and the work performed. If the car spent significant time in the shop, make sure the out-of-service days are clear. Keep towing records and rental car receipts, as these can help show how the defect affected you and the vehicle’s availability.
Collect your purchase or lease agreement, finance documents, registration, and title paperwork. Include the warranty booklet and any extended service contract, plus recall and technical service bulletin (TSB) printouts if the dealer provided them. Save emails and texts with the dealer or manufacturer, call logs, case numbers, certified mail receipts, and any photos or videos showing the defect (for example, a video of the infotainment screen going black or the engine revving without acceleration).
Organize everything in a simple timeline that lists each repair attempt and symptom. Back up documents to the cloud and keep originals in one folder. Continue following the manufacturer’s maintenance schedule and keep receipts—routine maintenance helps show you cared for the vehicle properly. Avoid modifications that could be blamed for the concern. If the vehicle has safety-related issues (like brake failure, airbag lights, steering problems, or sudden power loss), note those clearly in your records and raise them promptly with the dealer.
This article is for general informational purposes only, is not legal advice, and does not create an attorney–client relationship. Reading this page does not guarantee any outcome. Every situation is unique; laws change and apply differently based on your facts. If you believe your vehicle may qualify as a lemon under California law, contact ZapLemon for a consultation at [phone number] or visit [website]. Attorney advertising. Past results do not guarantee similar outcomes.