A sudden loss of power in traffic is more than a nuisance—it’s a serious safety risk that can leave you stranded in an intersection, unable to merge on the freeway, or crawling in “limp mode” as cars stack up behind you. If this keeps happening and your vehicle is still under the manufacturer’s warranty, California’s Lemon Law may offer remedies. Below, ZapLemon explains how the law applies, what to document, and when to reach out for a consultation.
Sudden Power Loss in Traffic: CA Lemon Law Basics
When a car or SUV abruptly loses power—hesitating, stalling, or dropping into limp mode—it can “substantially impair” the vehicle’s use, value, or safety. Common causes include failing fuel pumps, turbo or throttle body issues, transmission control module faults, software glitches, high-voltage battery or inverter faults in EVs, and defective sensors that send an engine into protective mode. If your vehicle repeatedly shows these symptoms and the dealer can’t fix them under warranty, it may meet the criteria for relief under California’s Song-Beverly Consumer Warranty Act (the California Lemon Law).
In plain terms, the California Lemon Law generally applies to new vehicles—and many used vehicles still under the manufacturer’s original warranty—that have a defect the manufacturer can’t repair after a reasonable number of attempts. What counts as “reasonable” depends on the facts, but the law includes helpful guidelines: repeated repair attempts for the same issue, a serious safety defect that persists after fewer attempts, or a vehicle that’s been out of service for warranty repairs for a total of 30 or more days. The law may provide a buyback or replacement, plus incidental damages like towing or rental cars, subject to legal offsets and exceptions.
There’s also a “presumption” period—the first 18 months or 18,000 miles—during which certain patterns of failed repairs can trigger a presumption that the vehicle is a lemon. But even if you’re outside that window, you may still have rights if the problem started under warranty and the manufacturer had a fair chance to fix it. Every case turns on specific facts: the defect, the repair history, and whether the issue impairs use, value, or safety. That’s why keeping detailed records and speaking with a California lemon law firm like ZapLemon can help you understand your options.
What to Document and When to Call ZapLemon
Start by documenting every power-loss incident and every interaction with the dealer. Note the date, mileage, speed, road conditions, dash warnings, and whether the vehicle entered limp mode or stalled. Ask the service advisor to accurately write your “customer states” concern on the repair order (for example: “Vehicle suddenly lost power while merging; throttle unresponsive; Check Engine light on”). Save all repair orders, invoices, diagnostic codes, recall notices, towing and rental receipts, and any photos or videos that capture the problem.
If the dealer says “no problem found,” ask for the complaint and their testing steps to be documented anyway. If a software update is performed, note the version and date. For EVs and hybrids, track issues related to the battery management system, inverter, DC-DC converter, or thermal management alerts. Avoid modifications or tuning that could complicate a warranty claim, and keep up with scheduled maintenance according to the owner’s manual. If you’re offered a manufacturer “case number” or arbitration program, keep that paperwork too.
Consider contacting ZapLemon if: you’ve had more than one repair attempt for sudden power loss; the vehicle has been in the shop for an extended time; the dealer tells you the issue is “normal” but it keeps happening; you’re driving an EV or hybrid and the updates aren’t fixing intermittent power cutouts; or you feel unsafe driving because the car won’t accelerate when needed. A consultation can help you understand timelines, warranty status, and next steps. While no outcome is guaranteed, an experienced California lemon law firm can evaluate whether your situation may qualify under the law.
Sudden loss of power in traffic deserves prompt attention—for your safety and your legal rights. If your vehicle’s power-loss issue keeps coming back and the dealer can’t fix it under warranty, California’s Lemon Law may provide remedies. The key is consistent documentation and timely action so the repair history tells a clear story.
Attorney advertising. This article is for informational purposes only, is not legal advice, and reading it does not create an attorney-client relationship. Past results do not guarantee a similar outcome. If you believe your vehicle may qualify as a lemon, contact ZapLemon for a consultation at (310) 489-3017 or visit https://zaplemon.com.