hand or park brake switch is still activated or low fluid in master cylinder
brake fluid is low in resevoir. I have the same problem, but it's due to a sticky sensor. Either that or your handbrake is on!!
Should be your hazzard lights.
This is the Brake System Warning Light. For info see page 3-30 of your "Owner's Manual, under Section 3: Instrument Panel - Warning Lights, Gages and Indicators...
It adjusts the dash lights
On the lancer its easy just pop the trunk open find out which lights are out and take the screws out that hold the lights in place and pop the bulb out that isn't working by turning it and replace it.
Also a3 red triangle with a circle around it
If the symbol resembles a a U with an exclamation point and there are square ridges on the bottom of the U that means you have Low Tire Pressure. If the symbol is a complete circle and resembles a sun with an exclamation point in the center it means it is a exterior light that has burned out. All these warning lights & symbols are illustrated and explained in the Owners Manual. See "Related Question" for a handy pdf version of any Owners Manual from 1996 on.
Bulbs may be burnt out.
Brake pads need to be replaced
Hazard lights (flashers)
Just guessing here, but wouldn't that be the 'Hazard Lights'?
it means your car has a tail light or brake lamp malfunction, just get someone to press on the brake or turn on the lights while you watch wich one its out.