Understanding dashboard warning lights in your Toyota Prius is essential for maintaining vehicle safety, as they alert you to potential issues that could lead to accidents or breakdowns if ignored.
These indicators help prevent costly repairs by prompting timely action, ensuring the hybrid system’s efficiency and overall reliability. By familiarizing yourself with them, you can drive confidently and address problems before they escalate.
Quick Navigation
Red Warning Lights (Stop Immediately)
Brake System Warning
This light signals low brake fluid or a failure in the braking system. Pull over safely, check fluid levels, and call for roadside assistance to avoid driving risks.
Charging System Warning
Indicates a problem with the battery charging setup, possibly due to faulty wiring. Stop the vehicle immediately and have it towed to prevent stranding.
Master Warning Light
A red triangle with an exclamation point means a serious issue like hybrid system failure or overheating. Stop driving right away and seek professional inspection.
Engine Oil Pressure Warning
Low oil pressure or engine overheating is detected. Stop the car, check oil level, and do not drive until fixed to avoid engine damage.
High Coolant Temperature Warning
The engine coolant is too hot, risking overheating. Pull over, turn off the engine, and wait for it to cool before checking levels or calling help.
Power Steering Warning
A steering wheel with an exclamation point indicates power steering failure. Stop safely as steering may become difficult, and contact a mechanic.
Seatbelt Reminder
Alerts if seatbelts are not fastened, often with a buzzer. Buckle up immediately for safety, as it may indicate a sensor issue if persistent.
Door Ajar Warning
A door or trunk is not fully closed. Stop to secure all doors to prevent accidents or theft.
Airbag Warning
Signals a fault in the airbag system. Stop and have it checked, as airbags may not deploy in a crash.
Hybrid System Overheat Warning
The hybrid components are overheating, possibly from heavy use. Stop the vehicle and allow cooling before professional evaluation.
Transmission Warning
Indicates a transmission malfunction in the hybrid setup. Pull over to avoid further damage and tow to a service center.
Low Brake Fluid Warning
Brake fluid is low, risking brake failure. Stop immediately, top up fluid if possible, and seek repairs.
Oil Temperature Warning
Engine oil is too hot, which could cause damage. Stop the car and let it cool, then check for issues.
Yellow/Amber Warning Lights (Action Required Soon)
Check Engine Light
Signals an engine or emissions issue, like sensor failure. Schedule service soon to diagnose and fix, as it may affect performance.
Tire Pressure Warning
One or more tires have low pressure. Check and inflate tires promptly to maintain handling and avoid blowouts.
ABS Warning
Anti-lock braking system malfunction detected. Have it inspected soon, though regular brakes still work.
VSC Off Indicator
Vehicle stability control is off or faulty. Turn it back on if possible and service soon for better traction.
Low Fuel Level Warning
Fuel is running low. Refuel at the next station to avoid running out.
Maintenance Required Reminder
Time for scheduled service like oil change. Visit a service center soon to keep the vehicle in good condition.
ESP/Stability Control Warning
Electronic stability program issue, possibly from sensor error. Have it checked to maintain control on slippery roads.
Transmission Temperature Warning
Transmission fluid is overheating. Allow cooling and check fluid levels soon.
Eco Mode Inactive
Eco driving mode is unavailable due to conditions. No immediate action, but check system if persistent.
Green Information Lights (Information Only)
Headlight High Beam Indicator
High beam headlights are on. No action needed, but dim for oncoming traffic.
Turn Signal Indicator
Turn signals are active. They flash to show direction; turns off after use.
Cruise Control Indicator
Cruise control is engaged. Monitors set speed; adjust as needed.
EV Mode Indicator
Vehicle is in electric-only mode. Indicates hybrid system using battery power.
Fog Light Indicator
Front fog lights are on. Use in low visibility; turn off when not needed.
Headlight Indicator
Standard headlights are active. Confirms lights are on for night driving.
Parking Brake Indicator
Parking brake is engaged. Reminder when parked; release before driving.
Low Beam Indicator
Low beam headlights are in use. Standard for normal driving conditions.
Transmission Gear Indicator
Displays current gear or mode. Informs driver of hybrid transmission state.
System Check Complete
All systems checked and ready after startup. No action needed.
