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.
When your car keeps breaking down even after the dealer has swapped out parts, it’s more than frustrating—it can disrupt work, family plans, and your budget. At ZapLemon, a California lemon law firm, we routinely hear from drivers dealing with ongoing defects despite multiple part replacements. This article explains the basics in plain language and outlines practical next steps you can take to protect your rights under California law.
When Repairs Fail: California Lemon Law Basics
California’s Lemon Law, part of the Song-Beverly Consumer Warranty Act, is designed to protect buyers and lessees of vehicles that are still under the manufacturer’s warranty and have defects that substantially impair use, value, or safety. It typically covers new vehicles and many used vehicles that are sold with a remaining manufacturer’s warranty or a dealer-provided warranty. The law can also cover certain business-use vehicles under specific weight and fleet-size limits. Private party sales without a warranty generally aren’t covered.
A key concept is “reasonable number of repair attempts.” If the manufacturer or its authorized dealer can’t fix a covered defect after a reasonable number of tries, the vehicle may qualify as a lemon. California’s legal “presumption” can apply within the first 18 months or 18,000 miles (whichever comes first): for example, two or more attempts for a defect likely to cause serious injury or death, four or more attempts for a non-safety defect, or the vehicle being out of service for 30 cumulative days for warranty repairs. The presumption is not the only path—you may still have a claim even if your facts fall outside these markers.
Replacing parts does not reset the clock or erase your rights. What matters is whether the defect persists or recurs under warranty and materially affects the vehicle. Common examples include repeated transmission shudder, check-engine lights for the same fault, EV battery or charging failures, brake noise tied to the same condition, or infotainment systems that crash despite software updates and module swaps. If your car keeps coming back with the same or related symptoms, you may be dealing with an ongoing defect under the Lemon Law.
What to Do if Parts Are Replaced but Defects Stay
Document everything. Each time you visit the dealer, make sure the repair order accurately describes your symptoms in your own words, not just “customer states noise.” Ask for copies of all repair orders, parts lists, diagnostic codes, and warranty invoices. Keep a simple log with dates, mileage in/out, days out of service, and how the issue affects driving (loss of power on freeway, won’t start after charging, AC blows warm air in heat wave, etc.). Photos or short videos of the problem—when safe to capture—can help.
Keep working through authorized channels. Return to an authorized dealer so repairs are documented as warranty work, and clearly explain that the issue is recurring despite prior part replacements. If the problem continues, escalate to the manufacturer’s customer care line and request a case number. Ask the service department to reference prior visits, not just the latest one, so your file shows a pattern. Be cautious about signing any “goodwill” or final settlement paperwork without understanding what rights you might be waiving.
Get informed before choosing a path. Some manufacturers promote arbitration programs; these may be faster but can limit discovery and remedies, and participation can be voluntary or mandatory depending on your warranty—review your materials and consider consulting a California lemon law firm first. In the meantime: avoid aftermarket modifications that could lead to blame-shifting; save receipts for towing, rental cars, rideshare, and other expenses; and check whether your vehicle has been out of service for 30 or more days across visits. If you think your car qualifies, a firm like ZapLemon can evaluate whether you may be entitled to a repurchase or replacement under California law, as well as incidental damages, based on your specific facts.
Need a case-specific review?
Use the case-review form to share the warranty, repair orders, dates, mileage, and supporting facts an attorney would need to evaluate, or call (844) 927-5366.
Attorney advertising. General information is not legal advice and does not create an attorney-client relationship. No result is promised or guaranteed.