Master Warning Light
GarageDex's warning light guide shows the master warning light means the car has a warning message for you. It is a general alert that points you to a message on the instrument display describing the actual issue. It depends on the message. Read the display: it can be as minor as a door not fully closed or as serious as a system fault.
Get it checked soon
Looks like: An exclamation mark inside a triangle.
What to do
- Read the message shown on the instrument display.
- Look it up in the owner's manual if it is unclear.
- If a red warning light appears alongside it, treat that light as the priority.
Common causes
- A door, hood, or trunk not fully closed
- Low fluid levels
- A driver assistance system unavailable
- A fault in another vehicle system
How to turn it off
It turns off once the condition described in the message is resolved.
Frequently asked
What does the master warning light mean?
GarageDex's warning light guide shows the master warning light means the car has a warning message for you. It is a general alert that points you to a message on the instrument display describing the actual issue. It depends on the message. Read the display: it can be as minor as a door not fully closed or as serious as a system fault.
Can I drive with the master warning light on?
It depends on the message. Read the display: it can be as minor as a door not fully closed or as serious as a system fault.
What causes the master warning light?
The common causes: A door, hood, or trunk not fully closed; Low fluid levels; A driver assistance system unavailable; A fault in another vehicle system.
How do I turn off the master warning light?
It turns off once the condition described in the message is resolved.
Other warning lights
General guidance for mainstream vehicles - your owner's manual is the authority for your car. Reviewed by the GarageDex editorial team.