Lemon Law Criteria for Constant Warning Indicators

If your dashboard seems to live with a “check engine,” airbag, ABS, or battery light that keeps coming back, you’re not alone—and you may be wondering whether California’s lemon law can help. Constant warning indicators can signal an underlying defect that the manufacturer hasn’t been able to fix under warranty after a reasonable number of attempts. This article from ZapLemon explains what persistent warning lights can mean under California law and how repair-attempt counting typically works, with plain-language examples and practical tips you can use today.

What Constant Warning Lights Mean in California

In California, the Song-Beverly Consumer Warranty Act—often called the lemon law—protects buyers and lessees when a vehicle 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. A constant or repeatedly returning warning indicator can be evidence of a nonconformity, especially when it points to a system that affects drivability or safety, or causes the vehicle to fail a smog test. Importantly, the warning light is the messenger; the underlying condition is the issue the law evaluates.

Not all warning lights are equal. Safety-related lights—such as the airbag/SRS light, brake or ABS lights, steering or stability control warnings—can signal defects that raise immediate safety concerns. A check engine light that comes back after repairs and is tied to misfires, stalling, or emissions faults can substantially impair use and value, especially in California where an illuminated MIL can cause an automatic smog check failure. Charging system, oil pressure, or overheating warnings can indicate serious powertrain problems that make a vehicle unreliable or unsafe to operate.

If you’re seeing a light that won’t stay off, documentation is key. Take photos or video of the instrument cluster with the mileage and date visible, and avoid clearing codes yourself. Each time you visit the dealer, ask for a detailed repair order that lists your complaint in your own words, the diagnostic trouble codes (DTCs) pulled, the technician’s findings, parts replaced, software updates applied, and the dates the vehicle was in the shop. Check whether the concern falls under your new-vehicle, powertrain, or emissions warranty, and ask the dealer about any recalls or technical service bulletins related to your symptoms.

How Many Repair Attempts Count Under CA Law

California’s lemon law uses a “reasonable number of repair attempts” standard. The state also provides a helpful—but not exclusive—“lemon law presumption” for problems occurring within the first 18 months or 18,000 miles, whichever comes first. Under that presumption, the vehicle may qualify if the manufacturer or its dealers made two or more repair attempts for a defect that is likely to cause death or serious bodily injury if the vehicle is driven, four or more attempts for the same defect or nonconformity, or the vehicle was out of service for warranty repairs for a total of more than 30 days. Meeting the presumption can make a claim easier to prove, but you can still have a case even if you’re outside those time or mileage windows or don’t meet the exact numbers.

Applied to warning indicators, the nature of the light matters. For example, a recurring airbag/SRS or brake system warning may fall into the “serious safety” category, where two unsuccessful attempts can be enough for the presumption if the problem is likely to cause injury when the vehicle is driven. A persistent check engine light tied to drivability or emissions issues may fit the four-or-more repair attempt route if the same or related nonconformity keeps coming back. Separately, if your car spends more than 30 cumulative days in the shop for warranty repairs—whether for one issue or several covered issues—that can also satisfy the presumption.

Practical steps can strengthen your position. Make sure each visit clearly states the recurring nature of the warning light and any symptoms you experience (stalling, hard shifting, reduced power, failed smog). If the dealer notes “could not verify,” ask to test-drive with a technician while the light is on, and request that any stored or history codes be recorded on the repair order. Track the in-and-out dates to calculate total days out of service, keep all invoices together, and promptly return if the light reappears after pickup. Avoid aftermarket modifications that could be blamed for the condition, and consider notifying the manufacturer’s customer care to open a case number—then speak with ZapLemon about your options.