What's that light on my dash?
Tap the light you're seeing. Each one explains what it means, what usually causes it, and green, yellow and red examples so you know whether to keep driving.
Stop soon and find out why.
Oil pressure warning light
The engine has lost oil pressure. Stop as soon as it's safe.
Engine temperature warning light
The engine is overheating. Pull over and let it cool.
Brake warning light
The parking brake is on, brake fluid is low, or the brake system has a fault.
Battery / charging system light
The battery isn't being charged. The car may die soon.
Airbag warning light
The airbag system has a fault and may not deploy in a crash.
Power steering warning light
Power steering assist has failed or is limited. Steering will feel heavy.
Get it checked soon.
Check engine light
The engine computer found a problem. Steady means get it checked; flashing means slow down now.
Tire pressure (TPMS) light
One or more tires is low, or the tire pressure system has a fault.
ABS warning light
Anti-lock braking is off. Normal brakes still work.
Traction / stability control light
Flashing means the system is working; steady means it's off or has a fault.
Low fuel light
The tank is getting low. Fill up soon.
Glow plug light (diesel)
On a diesel: wait for it to go out before starting. Flashing means a fault.
DEF warning light (diesel)
Diesel exhaust fluid is low or the DEF system has a fault. Ignoring it leads to a derate.
DPF warning light (diesel)
The diesel particulate filter is clogging and needs to regenerate.
Water in fuel light (diesel)
Water has collected in the diesel fuel filter. Drain it soon.
Transmission temperature light
The transmission fluid is running hot.
Brake pad wear light
The brake pads are worn down to the sensor. Replace them soon.
Maintenance required light
A scheduled service is due, or on some cars, a powertrain fault.
Got a code from a scan tool? Look it up on our fault code lookup.
Warning light questions
What do the colors of dashboard warning lights mean?
Red means a safety risk or possible engine damage: stop when it's safe. Yellow or amber means something needs attention soon. Green and blue lights are just indicators, like headlights or cruise control being on.
Which warning lights mean stop driving right away?
Oil pressure, engine temperature, the red brake light, and the battery/charging light are the ones to take most seriously. A flashing check engine light also means slow down and stop soon.
Why is my warning light flashing?
A flashing light is usually more urgent than a steady one. A flashing check engine light means a severe misfire. A traction control light flashing while you drive is normal; it means the system is working.
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