If your hybrid powers on but never shows the READY light—or refuses to start altogether—you’re not alone. Many California drivers report “No-Ready” issues after pressing the Start button: the dash lights up, warning messages flicker, and yet the car won’t engage drive. This can be especially frustrating when the vehicle is still under warranty. Below, ZapLemon explains how these problems happen, what to document, and how a California lemon law firm can help you understand your options.
Hybrid Won’t Start or Stuck in No-Ready Mode?
In most hybrids, the READY indicator tells you the high-voltage system is active and the vehicle can drive—even if the gasoline engine isn’t running. When a hybrid is stuck in No-Ready mode, you might see messages like “Check Hybrid System,” hear relays click, or notice the cluster lights cycle without the car moving. Some drivers also report that the shifter won’t engage D or R, or that the vehicle repeatedly asks to “Shift to P” or “Depress Brake” even when those steps were followed.
Common causes range from simple to complex. Frequent culprits include a weak 12-volt auxiliary battery, a faulty brake-pedal switch (the car thinks you’re not pressing the brake), a key fob battery issue, or a mis-seated hybrid service plug after a prior repair. More involved causes can include software glitches that require updates, inverter or DC–DC converter faults, high-voltage battery isolation faults, cooling system problems, or wiring and sensor failures. Intermittent problems may only appear after the car sits, on hot days, or following a jump-start.
A few practical steps can help. First, don’t try repeated jump-starts—this can mask the problem and potentially damage components. Instead, document every incident with dates, mileage, photos or short videos of warnings, and note conditions like temperature or how long the car sat. When you visit the dealer, ask for detailed repair orders showing your complaint, the technician’s findings, parts replaced, and days out of service. Check for recalls and Technical Service Bulletins (TSBs), and request that the dealer test the 12V battery under load, inspect the brake switch, verify the high-voltage service plug is fully secured, and check for software updates. Keep copies of everything.
How a California Lemon Law Firm Can Assist You
California’s lemon law (the Song-Beverly Consumer Warranty Act) generally applies to new vehicles—and many used vehicles still under the manufacturer’s warranty—when a defect covered by warranty substantially impairs use, value, or safety and the manufacturer can’t fix it after a reasonable number of attempts. For hybrids with No-Ready issues, the key questions are whether the starting/READY fault is recurring, whether it’s been addressed multiple times under warranty, and how long the vehicle has been out of service. While there are legal guidelines and presumptions under California law, every situation is fact-specific.
A California lemon law firm like ZapLemon can review your repair history, warranty status, and timeline to help you understand your rights and potential remedies. That may include seeking a repurchase or replacement when the legal standards are met, and requesting reimbursement of qualifying incidental costs like towing or rental under the statute. In many successful lemon law cases, the manufacturer—not the consumer—may be required to pay reasonable attorney’s fees and costs, which can make getting help more accessible. ZapLemon provides information and a consultation so you can make an informed decision.
What can you do now? Gather all repair orders, tow receipts, rental invoices, and any written or text communications with the dealer. Keep a simple log of each no-start or No-Ready event. Confirm your warranty coverage and ask the dealer for copies of diagnostic codes and TSB references. If you suspect your situation might qualify under the California lemon law, consider a consultation with ZapLemon to discuss your specific facts. This article is for general information only—legal advice requires a review of your records and a one-on-one discussion.
Attorney Advertising. This post is for informational purposes only and is not legal advice. Reading it does not create an attorney–client relationship with ZapLemon, and past results, if any, do not guarantee similar outcomes. If you believe your vehicle may qualify as a lemon due to a hybrid won’t start or No-Ready mode problem, contact ZapLemon for a consultation at www.ZapLemon.com. A consultation is necessary to obtain legal advice about your situation.