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.
Intermittent power failures—sudden loss of acceleration, engine cutting out, flickering electronics, or a car that randomly won’t start—are among the most frustrating and potentially dangerous vehicle problems. If these issues keep happening and the dealer can’t fix them under warranty, California’s Lemon Law may offer remedies. Below, ZapLemon explains how the law treats intermittent power problems and what you can do to document repairs and protect your potential claims.
Intermittent Power Failures under California Lemon Law
Intermittent power loss can show up in many ways: the engine stalls at a stoplight, the vehicle drops into “limp mode” on the freeway, the infotainment and instrument cluster reboot mid-drive, or a hybrid/EV suddenly loses propulsion. These issues can stem from electrical faults (battery, alternator, grounding), sensors and modules (ECU/PCM, throttle body, crank/cam sensors), fuel delivery, software bugs, or high‑voltage components in hybrids and EVs (inverter, DC‑DC converter, contactors). Because the failure comes and goes, it can be hard for a technician to duplicate on a short test drive—even when the problem is real and recurring.
Under California’s Song‑Beverly Consumer Warranty Act (the “Lemon Law”), a vehicle may qualify for relief if it has a defect covered by the manufacturer’s warranty that substantially impairs use, value, or safety and the manufacturer or its dealer can’t repair it after a reasonable number of attempts. There’s a legal “presumption” that can apply within the first 18 months or 18,000 miles if, for example, there are multiple repair attempts for the same issue, two or more for a serious safety defect, or 30+ cumulative days out of service. You don’t have to meet the presumption to have a claim, but it can make claims easier to prove.
Intermittent power failures often count as safety-related because they can affect acceleration, steering assist, or visibility if electronics go dark. Even if the dealer installs software updates or replaces parts, the key is whether the problem keeps coming back under warranty. Every visit matters—each repair attempt, tow, and day out of service helps show the pattern. While this article is for general information and not legal advice, many consumers find that persistent, documented intermittent power issues are taken seriously under California law.
How to Document Repairs and Preserve Your Claims
Start a simple log the moment you notice power issues. Note the date, mileage, speed, fuel or charge level, outside temperature, dashboard warnings, and what you were doing when the failure occurred (merging, uphill grade, stop‑and‑go). If it’s safe, take short videos of the symptoms—flickering screens, tach/speedo drops, warning lights, or a no‑start condition. Avoid clearing codes or disconnecting the battery before service; stored fault data can be crucial.
Each time you visit the dealer, ask for a detailed, final Repair Order (RO) that includes “customer states” (your complaint), “cause,” and “correction,” along with dates and mileage in/out. Confirm the RO mentions that the issue is intermittent and safety‑related if applicable, and list any warning lights observed (e.g., check engine, battery, power reduced). Keep copies of towing invoices, rental/loaner records, and any manufacturer case numbers. If a field technician or factory engineer is involved, ask that this be documented on the RO.
Track cumulative days out of service and the number of repair attempts for the same power-loss concern. Ask the service advisor whether there are Technical Service Bulletins (TSBs), recalls, or software updates for your VIN, and keep printouts or screenshots if provided. Don’t modify the vehicle or install aftermarket electronics during the warranty period, as this can complicate diagnostics. If the problem persists, consider scheduling a consultation with a lemon law attorney to review your documentation and discuss options specific to your situation.
This article is for informational purposes only, is not legal advice, and reading it does not create an attorney‑client relationship. Attorney advertising; past results do not guarantee similar outcomes. If you believe your vehicle may qualify as a lemon due to intermittent power failures, contact ZapLemon for a consultation at (555) 555‑5555 or visit www.zaplemon.com. A consultation is necessary to receive legal advice tailored to your circumstances.
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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.