That means that there is something wrong with the vehicle's cooling system, usually that the coolant temperature is higher than it should be.
The appearance of warning signals/symbols should immediately result in the vehicle operator either checking out the indicated system, OR have it done by a Professional who knows what he/she is doing.
A small yellow symbol lit up on my dashboard, is it the transmission light?
a curly yellow spring
Your coolant level is low.
On my 95 Avalon, there was a yellow picture of a car showing that my rear lights (license plate) were out.
oil light on when engine off
the meaning of the yellow trangular light on the dash board of the 2003 seat leon car
That is the check engine light. See related questions below.
Minimum approach speed at max load, Vs X 1.3
If it is a manual transmission, I believe it lights up indicating that you must up-shift for better fuel economy.
It could be the gas cap is not on properly. So take it off and put back on but then it still takes a day or 2 for the icon to go away
Turn the headlight swith on to activate the lights and then pull the switch outwards - towards yourself being in the Driver's seat. A yellow symbol next to the Headlight Switch should light up and the Fog Lights will come on. "Let there be light........."
Caution lights.