Types of Problems Covered by the Lemon Law

The dream of driving a new car off the lot can quickly become a nightmare when that vehicle spends more time at the dealership than in your driveway. Constant warning lights, strange noises, and repeated trips for the same frustrating issue can leave you feeling helpless and angry. At LemonLaws.com, we understand this frustration, and we want you to know that California law provides powerful protections for consumers who find themselves in this exact situation.

Not every vehicle issue qualifies for lemon law protection, however. The law is designed to address serious defects that the manufacturer is unable to fix after a reasonable number of attempts. Understanding what types of problems are covered is the first step toward asserting your rights and getting the resolution you deserve.

The Core Principle: "Substantial Impairment"

The cornerstone of the California Lemon Law is the concept of a "nonconformity." This is a legal term for any defect or condition covered by the manufacturer's warranty that substantially impairs the use, value, or safety of the vehicle. This principle is the heart of California's primary lemon law, the Song-Beverly Consumer Warranty Act (California Civil Code sections 1790-1795.8).

Let's break down what "substantial impairment" means in plain English:

• Use: The defect prevents you from using your car as it was intended. A car that constantly stalls in traffic or has a non-functioning transmission clearly has an impairment of use.
• Value: The defect significantly lowers the car’s resale value compared to a similar vehicle without the problem. A permanently malfunctioning air conditioning system or a persistent, unfixable leak would likely reduce the car's value.
• Safety: The defect compromises the safety of the driver, passengers, or others on the road. This is the most serious category and includes problems with brakes, steering, airbags, or seat belts.

A minor rattle in the glove box or a small scuff on an interior plastic panel would likely not be considered a substantial impairment. But a severe vibration that makes it difficult to control the car at highway speeds certainly would be. The determination is made on a case-by-case basis, but the defect must be more than a simple annoyance.

Common Categories of Lemon Law Defects

While any defect that meets the "substantial impairment" test can qualify, problems typically fall into several common categories. If your vehicle's issue is on this list and the dealer has failed to fix it after a reasonable number of tries, you may have a strong lemon law claim.

Safety-Related Defects

Any problem that compromises your vehicle's ability to operate safely is taken very seriously under the law. These defects pose a direct risk to you and others. Because of their severity, the law provides a lower threshold for these issues.

Under a special provision known as the "lemon law presumption," which is outlined in the Tanner Consumer Protection Act (California Civil Code section 1793.22), a vehicle is presumed to be a lemon if the manufacturer has made two or more repair attempts for a defect that is likely to cause death or serious bodily injury.

Examples of serious safety defects include:

• Braking System Failures: Spongy brakes, complete brake failure, or malfunctioning anti-lock braking systems (ABS).
• Steering Problems: The steering wheel locking up, excessive play or looseness, or failure of the power steering system.
• Airbag Defects: The airbag warning light staying on or, worse, failure to deploy in an accident.
• Engine Stalling: The engine shutting off unexpectedly while driving, especially at speed or in intersections.
• Faulty Advanced Driver-Assistance Systems (ADAS): Malfunctioning automatic emergency braking, lane-keeping assist that pulls the car erratically, or faulty adaptive cruise control.
• Uncontrolled Acceleration or Deceleration: The vehicle speeding up or slowing down without driver input.
• Fuel System Leaks: Any leak of gasoline or diesel, which creates a significant fire hazard.

Mechanical and Powertrain Failures

These are the "classic" lemon law issues that affect the core components responsible for making the car go. A defect in the powertrain, which includes the engine, transmission, and drivetrain, almost always substantially impairs the vehicle's use.

For most non-safety defects, the lemon law presumption applies after four or more repair attempts for the exact same problem.

Common mechanical and powertrain failures include:

• Transmission Issues: Jerking, slipping between gears, harsh shifting, or complete failure to engage a gear.
• Engine Problems: Overheating, excessive oil consumption, knocking or clunking sounds, or persistent "Check Engine" lights that dealers cannot properly diagnose and fix.
• Electrical System Failures: Persistent battery drain that leaves you stranded, faulty wiring that causes shorts, or malfunctioning alternators.
• Differential and Drivetrain Noise: Grinding or whining sounds from the axle or differential that indicate a serious mechanical failure.
• Cooling System Leaks: Chronic coolant leaks that lead to engine overheating.

Electrical and Technology System Malfunctions

Modern vehicles are complex computers on wheels. While technology adds convenience, it also introduces more potential points of failure. An issue with an "infotainment" system might seem minor, but if it integrates essential vehicle functions or is so persistent that it impacts the car's value and your ability to use it, it can qualify as a lemon law defect.

Examples include:

• Faulty Infotainment Screens: Screens that go blank, become unresponsive, or control essential features like climate or defrosters.
• Malfunctioning GPS and Navigation: A system that consistently provides wrong directions or cannot locate the vehicle.
• "Ghost" Warning Lights: Multiple warning lights on the dashboard that illuminate for no reason and cannot be permanently fixed.
• EV and Hybrid Battery Problems: Failure to hold a charge, drastically reduced range not attributable to normal degradation, or issues with the charging system.
• Faulty Keyless Entry or Ignition Systems: Systems that fail to recognize the key fob, preventing you from starting or securing your vehicle.

The "Days Out of Service" Rule

Sometimes, the issue isn't the number of repair attempts, but the sheer amount of time your car has been unavailable to you. The Tanner Act provides another path to the lemon law presumption: if your vehicle has been out of service for repairs for a cumulative total of more than 30 days for any combination of warranty-covered defects, it may be presumed a lemon.

These 30 days do not need to be consecutive.

Worked Scenario: Imagine your new SUV has a persistent water leak.

• It's in the shop for 10 days in March.
• The leak returns, and it's back in the shop for 12 days in May.
• In July, a new engine warning light appears, and it's in the shop for another 9 days.

The total time your vehicle has been out of service is 10 + 12 + 9 = 31 days. Because this exceeds the 30-day threshold, your vehicle would likely meet the criteria for the lemon law presumption, even though the repairs were for different issues.

What the Lemon Law Does NOT Cover

It is just as important to understand what falls outside the scope of the Song-Beverly Act. The law protects consumers from manufacturing defects, not from every problem that can possibly happen to a vehicle.

Problems Caused by the Owner or Accidents

The lemon law does not cover defects or damage that you cause. This includes issues arising from:

• A car accident.
• Neglect or abuse of the vehicle.
• Unauthorized modifications or alterations (such as installing aftermarket performance parts that damage the engine).
• Failure to perform routine maintenance as outlined by the manufacturer.

Minor Issues and Cosmetic Blemishes

As discussed earlier, the defect must be substantial. Minor imperfections that do not affect the car's use, value, or safety are generally not covered. Examples include a tiny paint chip, a slight rattle from a piece of interior trim, or easily cleaned stains on the upholstery that were present at delivery.

Routine Maintenance Items

Parts that are designed to wear out and be replaced are not covered by the lemon law. This includes items like tires, windshield wipers, brake pads, and oil filters. However, if a system related to these parts fails, it could be a valid claim. For example, worn-out brake pads are your responsibility, but a failing anti-lock brake module is a warrantable defect.

Issues Arising After the Warranty Expires

To qualify for lemon law protection, the defect must first arise and be reported to the manufacturer or its authorized dealer while the vehicle is under the original manufacturer's warranty. Even if the repair attempts continue after the warranty expires, the initial problem must have started and been documented during the warranty period.

Problems Caused by Third Parties

The lemon law applies to defects originating from the manufacturer. It does not cover problems caused by outside forces. For instance, recent legislation like California's SB 766 (the CARS Act) addresses the marking of catalytic converters to deter theft. If your catalytic converter is stolen, that is a matter for your auto insurance, not a lemon law claim, because it wasn't a defect in the part itself.

The Importance of Documentation: Your Repair Order is Your Proof

If you suspect you have a lemon, your single most important tool is the repair order you receive from the dealership every time you take your car in for service. This paperwork is the primary evidence used to build a lemon law case.

Every time you visit the dealer for a problem, insist on a repair order that clearly states:

• The date your vehicle was brought in and the date you picked it up.
• The mileage when you dropped it off.
• Your specific complaint, described in your own words (e.g., "grinding noise from transmission when shifting from 2nd to 3rd gear").
• The technician’s diagnosis.
• The exact work the dealer performed to try and fix the issue.

A new California law, AB 1755, which took effect in 2024, makes this process easier by requiring dealers to provide you with a copy of your repair records in an electronic format upon request. This is a great step forward for consumers, making it simpler to maintain a complete and accurate history of your vehicle's repair attempts.

Frequently Asked Questions

Does the California Lemon Law apply to used cars?

Yes, it can. The lemon law covers used cars that are still protected by the original manufacturer's warranty (for example, a one-year-old car sold with 2 years remaining on its 3-year factory warranty). It can also apply to certified pre-owned vehicles or used cars sold with a specific dealer warranty, covering defects related to that warranty.

What if the dealer says they can't find the problem?

If you complain about a specific issue and the dealer writes "No Problem Found" or "Could Not Duplicate" on the repair order, it still counts as a repair attempt. As long as you clearly reported the problem and gave the dealer a chance to fix it, their failure to diagnose it is part of the story. This is why accurately describing your complaint on the service write-up is so critical.

Do I have to go to arbitration before filing a lemon law claim?

No. In California, you are not required to participate in a manufacturer's arbitration program before pursuing a lemon law claim in court. While arbitration is an option, it's often wise to speak with an experienced lemon law attorney first to understand all your rights and the potential benefits and drawbacks of the arbitration process.

Are leased vehicles covered by the lemon law?

Absolutely. The Song-Beverly Act provides the same protections for leased vehicles as it does for purchased vehicles. If your leased car is a lemon, you are entitled to the same remedies, which typically involve the manufacturer either replacing the vehicle or refunding your payments and paying off the remainder of the lease.

Dealing with a defective vehicle is draining, but you don't have to face the manufacturer alone. If your car has been subject to repeated repair attempts for a significant defect, you may be entitled to a refund, a replacement vehicle, or a cash settlement. The law is on your side, and our team at LemonLaws.com is here to help you enforce your rights.

We offer a free, no-obligation consultation to review your case and explain your options. Best of all, California's lemon law includes a fee-shifting provision (California Civil Code section 1794(d)), which means that if you have a valid claim, the manufacturer is required to pay your attorney's fees and costs. This allows us to represent you with no out-of-pocket fees. Contact us today to get the dedicated and trustworthy help you need.