This master warning light on the dash usually means a failed hybrid battery or inverter. Unless the price is low enough to cover a $1,600 refurbishment, keep looking.

Listen for a frequent "barking" or buzzing sound from under the hood when the car is off or the door opens. If the pump runs every few seconds, the actuator is failing—a $2,000+ repair.

Check the vent next to the rear seat. If it’s clogged with pet hair or dust, the battery has been running hot, shortening its lifespan. 3. The "Generation" Cheat Sheet

Beyond the standard used car checks, focus on these Prius-specific areas:

Generation 3 models (2010–2015) are known for burning oil once they cross 100k miles. Check the dipstick; if it’s bone dry, the previous owner may have caused engine damage. 2. Service History Milestones