What do different lights mean on the dashboard?

Dashboard lights warn you about your vehicle’s status. In general, red lights demand immediate action, amber/orange lights signal a fault or service is needed soon, and blue/green lights provide information about the car’s current operation. The exact symbols vary by model, so consult your owner’s manual for model-specific meanings.

Color codes and urgency

Automakers use color to convey urgency at a glance. Red indicates a potentially dangerous condition requiring immediate action, amber signals caution or maintenance needs, and blue/green shows status information or active features. Below are the lights you’re most likely to encounter, grouped by color.

Red warning lights

Red indicators are critical warnings. If one of these lights stays on while you’re driving, stop safely and assess the situation. If you’re unsure, contact roadside assistance or a mechanic.

• Oil pressure warning — low oil pressure that could damage the engine


• Engine temperature warning — engine is overheating


• Brake system warning — brake fluid issue or parking brake engaged; potential hydraulic fault


• Airbag/seat belt warning — airbag system fault or seat belt pretensioner issue


• Battery/charging system fault — electrical charging problem may cause stalling or startup failure

Red lights indicate conditions that can cause immediate damage or compromise safety. If one lights up, reduce speed, stop safely if needed, and seek professional help as soon as possible.

Amber/orange warning lights

Amber lights indicate faults or conditions that should be addressed soon to prevent further damage or to avoid breakdowns. They do not always require an immediate stop, but you should schedule service promptly.

• Check engine or Malfunction Indicator Lamp (MIL) — emissions or engine fault detected


• ABS (Anti-lock Braking System) warning — ABS may be unavailable, but brakes still function normally


• TPMS (Tire Pressure Monitoring System) warning — one or more tires are underinflated


• Maintenance or service due indicator — routine service is recommended


• Low fuel warning — fuel level is low and you should refuel soon


• Emissions system fault — potential issues with catalytic converter or sensors


• Gas cap warning — loose or missing fuel cap may trigger emissions-related alerts

Amber lights suggest you should book a service appointment or check the simple causes (like a loose gas cap) soon to prevent drivability problems or increased emissions.

Blue/green information indicators

Blue and green lights are informational. They confirm that a feature is active or that the vehicle is operating under specific conditions. They usually do not indicate a fault, but they require awareness of ongoing functions.

• High beam indicator — headlights are in high-beam mode


• Headlights on indicator — low or automatic headlights are active


• Cruise control engaged — cruise is active and maintaining speed


• Fog lights indicator — front fog lights are turned on


• Turn signal indicators — left or right turn signals are flashing

Blue/green indicators help you monitor standard operation and feature status. If you notice unexpected changes in these lights, consult the manual to verify that the feature is behaving as intended.

How to respond to warning lights

Immediate actions for red indicators

If a red light appears and stays on while driving, slow down and stop safely as soon as possible. Do not continue driving if the red light signals a critical fault (such as oil pressure or engine overheating). Call for roadside assistance if you are stranded or unsure of the problem.

What amber lights mean for maintenance