Q: What does the Master warning light on the dash mean?

asked by on

What does the Master warning light on the dash mean?

The Master Warning Light is usually accompanied by another warning light, and indicates that one or more warning systems have been detected. The Master Warning Light ranges in its levels of significance and severity. It is important to check your vehicle before operating it, to try and determine the cause of the Master Warning Light. If you are unable to make a determination as to the cause of the Master Warning Light, it would be a good idea to have it diagnosed to check if there is a serious issue present that needs to be addressed immediately.

Dashboard indicator lights and their meaning may differ depending on the make and model of a vehicle, but the following are some potential reasons for why the Master Warning Light may be on in the dashboard:

  • Low tire pressure
  • Low fuel
  • Low washer fluid
  • Low coolant
  • Low battery voltage
  • A door is ajar
  • The parking brake is still engaged
  • Headlights have been left on
  • The fuel cap is loose or missing

If you are having trouble figuring out why this light is on, you can have a certified mechanic, such as one from YourMechanic, diagnose your Master Warning Light to have this issue resolved.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. What does the Master warning light on the dash mean?

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: What does the driver’s seat belt reminder Warning Light mean?

The driver’s seat belt reminder Warning Light is located on the instrument panel, and is accompanied by a buzzer sounding. This light illuminates when the driver has not securely latched their seat belt. When the belt is buckled, the light...

Q: Check engine light, VSA On light, and EPS light all on while driving.

Car warning lights come on for numerous reasons. The Check Engine Light is the most common light and may be on for several possible reasons. The VSA light relates to the vehicle stability assist system which is like a traction...

Q: Q: What does the engine coolant temperature gauge do?

You have a number of important gauges, readouts and lights on the dash. The engine coolant temperature gauge is one of the most critical. It measures the temperature of your engine’s coolant. During normal driving, it should stay in the...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.