If your new or recently purchased car shows up with a heater that doesn’t work right at delivery, you’re not alone—and you’re not without options. In California, the lemon law may protect buyers when a vehicle has covered defects under warranty, including HVAC problems like a dead heater or a defroster that won’t clear the windshield. The key is understanding how the law works, what counts as a “nonconformity,” and what steps you should take from day one.
Heater Dead at Delivery? California Lemon Law Basics
In California, the Song-Beverly Consumer Warranty Act—often called the California Lemon Law—generally covers new cars and certain used cars that come with a manufacturer’s warranty. If your heater doesn’t work at delivery, that’s a strong signal the car had a defect from the start, which may implicate both the express warranty and the implied warranty of merchantability (the basic promise that a car is fit to drive). Heating and defrosting functions are not just comfort features; they affect visibility and safety, especially in rain or cold mornings.
To qualify as a “lemon,” the defect usually must be covered by the warranty and substantially impair the vehicle’s use, value, or safety. A non-functional heater can meet this standard, particularly when the defroster fails and you can’t clear the windshield. The law generally requires the manufacturer (through its authorized dealers) to get a reasonable number of repair opportunities. California also has a guideline—often called the Lemon Law Presumption—during the first 18 months or 18,000 miles that can make it easier to show the manufacturer had enough chances, but every case is fact-specific.
If the manufacturer cannot fix the heater-related defect after a reasonable number of attempts, you may be entitled to a repurchase or replacement, or another remedy available under the law. This is not automatic, and outcomes depend on the details: how many repair attempts were made, how long the car was in the shop, whether the issue recurred, and whether the defect is covered. This article is for information only; you should speak with a lawyer to evaluate your situation. ZapLemon can explain your options based on your documents and timeline.
Steps to Take and Records to Keep for Heater Issues
When the heater doesn’t work at delivery, note it immediately. Ask the dealer to put the problem in writing on the Due Bill/We-Owe form or the delivery checklist before you leave. Schedule a warranty repair promptly and make sure your repair order clearly states the symptoms in your words—e.g., “no cabin heat,” “driver vents blow cold only,” or “defroster doesn’t clear windshield.” If it’s cold or raining, mention safety impacts like foggy windows or reduced visibility.
Keep a complete paper trail. Save all repair orders, invoices (even if $0 under warranty), and pick-up/delivery receipts. Take photos or short videos showing the lack of heat or fogged windshield, and note dates, temperatures, and driving conditions. Track how many days your vehicle is out of service for HVAC repairs, and record each time the heater fails again after a visit. If you call the manufacturer’s customer care line, ask for a case number and keep a log of who you spoke with and when.
Avoid modifications that could complicate diagnosis (aftermarket remote starters, custom wiring, or climate control tweaks). Check your owner’s manual and warranty booklet for HVAC coverage details and any “lemon law rights” notices. It can also help to ask the dealer whether there are technical service bulletins (TSBs) for your model’s heater or blend door actuators, heater cores, or climate control modules. If multiple attempts don’t resolve the problem, consider speaking with ZapLemon to discuss next steps. We can help you understand timelines, what counts as “reasonable” attempts, and the documentation that tends to matter.
A heater that’s dead on day one is frustrating and potentially unsafe—and it’s exactly the kind of warranty defect California’s lemon law is designed to address. The best thing you can do is act quickly, document everything, and learn your rights before the problem drags on. Every situation is different, and an attorney can help you evaluate whether your facts may fit the law.
This article is for informational purposes only, is not legal advice, and reading it does not create an attorney-client relationship. If you believe your vehicle may qualify as a lemon, contact ZapLemon at [phone number] or visit [website] to request a consultation. We’re here to listen, review your records, and help you understand your options under California law.