When a new or certified pre-owned car keeps breaking down, it’s more than inconvenient—it can feel unfair and overwhelming. California’s Automobile Lemon Law exists to address persistent defects that the manufacturer can’t seem to fix under warranty. This article explains how “persistent defects” are treated under California law and what steps you can take to protect yourself, including when to contact ZapLemon for help.
California Auto Lemon Law: Persistent Defects Explained
California’s Lemon Law—part of the Song-Beverly Consumer Warranty Act—protects consumers when a vehicle has a defect that substantially impairs its use, value, or safety and the manufacturer can’t repair it after a reasonable number of attempts. Persistent defects are repeated or ongoing problems that continue despite warranty repairs, such as a transmission that keeps jerking, an electrical system that shuts down unpredictably, or a braking issue that won’t stay fixed. The law can apply to new and, in many cases, used vehicles that are still covered by the manufacturer’s warranty.
The law includes a “lemon law presumption” that helps define what a reasonable number of repair attempts may look like within the first 18 months or 18,000 miles from delivery, whichever comes first. Generally, the presumption can apply if: (1) the manufacturer or its repair facility tried at least two times to fix a defect likely to cause death or serious injury; (2) it tried at least four times to fix the same non-safety defect; or (3) the vehicle was out of service for repair for more than 30 cumulative days. Even if your situation falls outside these time or mileage windows, you may still have rights—those criteria create a presumption, not a hard limit.
Common examples of persistent defects include engine stalling, transmission shuddering or slipping, power steering failures, repeated “check engine” warnings, airbag or ABS lights that return, water leaks and mold, infotainment blackouts, wiring or sensor faults, and HVAC systems that won’t heat or cool properly. For electric vehicles, recurring charging errors, range loss tied to defects, or battery and thermal management issues may qualify if they substantially impair use, value, or safety. If you’re unsure whether your problem is covered, review your warranty booklet and repair orders, and consider speaking with a professional to understand your options.
How to Document Problems and When to Call ZapLemon
Thorough documentation is one of the most effective ways to protect your rights. Each time you visit the dealer, ask for a detailed repair order that lists your exact complaint in your own words (what you felt, heard, or saw), the dates in and out, the mileage, diagnostics performed, parts replaced, and the final outcome. Photos or short videos of the problem (for example, the dashboard lighting up, the vehicle failing to shift, or the screen rebooting) can be very helpful—share them with the service advisor and note that in the repair order. If a visit ends with “no problem found” or “could not duplicate,” request that the symptoms you reported still be captured clearly on the paperwork.
Create a simple timeline to track how often the problem happens and how long the car is in the shop. Keep copies of all communications with the dealer and manufacturer, including emails, texts, and case numbers from customer care. Try not to skip recommended appointments—give the manufacturer reasonable opportunities to repair—and avoid modifications that could complicate warranty coverage. If your warranty is close to expiring, schedule service promptly so the issue is documented while still under warranty.
Consider contacting ZapLemon if you have multiple repair attempts for the same issue, a serious safety defect that persists after two tries, or more than 30 cumulative days without your car due to repairs. It may also be time to call if you’re told the vehicle is “operating as designed” even though the defect keeps returning, your EV has recurring charging or battery faults, or the issue began under warranty but remains unresolved as the warranty end approaches. A consultation can help you understand the process and your potential remedies, which may include a repurchase or replacement under California law, depending on the facts of your case.
This article is for informational purposes only and is not legal advice. Reading it does not create an attorney–client relationship, and past results do not predict future outcomes. If you believe your vehicle may qualify as a lemon, contact ZapLemon at (844) 927-5366 or https://zaplemon.com. A consultation is recommended to obtain legal advice tailored to your specific situation.