Your dashboard talks to you in colours. Learning the difference between a warning and a simple reminder saves you both panic and expensive damage.
Read the colour first
Red means stop and act now. Amber or yellow means something needs attention soon but is usually not an emergency. Green and blue are just telling you a system is on, like your headlights or cruise control.
Lights that mean pull over now
- Oil pressure (the oil can symbol in red): low oil pressure can destroy an engine in minutes. Stop and check the oil.
- Temperature (the thermometer in red): the engine is overheating. Pull over and let it cool.
- Charging (the battery symbol): the car is running on battery alone and will soon stall. Get somewhere safe.
- Brake (red, when the handbrake is off): a brake fault or low fluid. Test the brakes gently and stop.
Lights that mean check soon
The amber check engine light, tire pressure warning, and ABS light usually let you keep driving carefully, but they should not be ignored. The check engine light in particular can mean anything from a loose fuel cap to a failing sensor.
How to find the real cause
A basic code reader plugs into the port under the dash and tells you the fault code behind the check engine light, so you are not guessing. It is one of the most useful tools a driver can own. See our car accessory guides for options.
Frequently asked questions
Is it safe to drive with the check engine light on?
If it is steady and the car runs normally, usually yes, but get it read soon. If it is flashing, that means a serious misfire, so drive gently and stop.
Will the light reset itself?
Some lights clear once the fault is fixed and the car has run a few cycles. Others need a scanner to clear.
