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.
If your airbag light keeps popping on, a dealer can’t seem to fix it, and you’re driving a used car in California, you’re probably wondering whether the Lemon Law can help. This guide from ZapLemon explains how California’s Lemon Law can apply to used vehicles and how airbag fault codes—sometimes called SRS codes—fit into the picture. We’ll keep it plain-English, so you know what to watch for, what to document, and when to consider speaking with a lawyer about your options.
California Lemon Law for Used Cars: Airbag Codes 101
California’s Lemon Law, officially the Song-Beverly Consumer Warranty Act, can cover used cars in certain situations. The key is warranty coverage: many used vehicles are still protected by the original manufacturer’s warranty, a certified pre-owned (CPO) warranty, or a dealer-provided warranty. If a covered car has a defect that substantially impairs its use, value, or safety—and the manufacturer or its authorized dealer can’t fix it after a reasonable number of attempts—the owner may have legal remedies. Airbag problems fall squarely into the “safety” category, which is why recurring SRS faults on a warrantied used car can be especially important to document.
“Airbag codes” are diagnostics stored by the Supplemental Restraint System (SRS) module. You’ll often see “B-codes” (body system) related to deployment circuits, squibs, seat belt pretensioners, or occupant sensors, and sometimes “U-codes” indicating the airbag module lost communication with other control units. Examples vary by make and model—think codes referencing an “open circuit” in the driver’s airbag, a faulty passenger seat sensor, or a communication fault with the restraints control module. Basic OBD-II readers may not show SRS codes; a professional scan tool or dealer-level equipment is usually required. If a shop scans your car, ask them to print the SRS code report and attach it to your repair order.
From a Lemon Law perspective, what matters is the pattern: repeated repair visits for the same or related airbag issue, long stretches of time in the shop, and a defect that affects safety. Keep every repair order, loaner agreement, and invoice; take photos of the airbag light when it appears; and note the conditions (speed, passengers, bumps) when it comes on. Do not clear codes yourself—clearing can erase valuable data. If you’re still within warranty and the SRS warning keeps returning, it may be time to escalate with the manufacturer and consider a consultation to understand your options.
What Airbag Warning Lights Mean and Next Steps
When the airbag or SRS light is illuminated, the system has detected a fault and may be partially or fully disabled. That can mean airbags or seatbelt pretensioners won’t deploy during a crash, or they could deploy unpredictably, which is why the warning is taken seriously. A steady light generally indicates a stored fault; a flashing light can indicate an active or intermittent issue. Common culprits include a faulty clock spring in the steering wheel, a damaged seat harness, a bad occupant classification sensor, a failed pretensioner, or a software problem in the restraints module.
Your first step is safety and documentation. Check your owner’s manual and schedule service promptly; if the vehicle shows additional warnings or you’re unsure about safety, consider arranging a tow. At the dealership or qualified shop, describe when the light appears (for example, with a passenger seated, after moving the seat, or over bumps). Ask for a full diagnostic, including SRS codes, freeze-frame data if available, and a printed work order. Also check your VIN on NHTSA’s website to see if an airbag recall (such as a Takata inflator or software update) applies—recalls are typically repaired at no cost.
If the light keeps coming back after repairs, start building a clean paper trail. Keep copies of every repair order with the same or related complaint, and note days out of service. Ask the service department to include the exact SRS codes found, what parts were replaced, and any software updates performed. If you’re still under a manufacturer or CPO warranty, consider opening a case with the automaker’s customer care line to document the issue at the manufacturer level. If multiple repair attempts don’t resolve the fault, a consultation with ZapLemon can help you understand whether your vehicle might meet California’s standards for relief.
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Attorney advertising. General information is not legal advice and does not create an attorney-client relationship. No result is promised or guaranteed.