usually the parking brake sensor is malfunctioning [or the fluid is low check this first]
The brake indicator light is for the EMERGENCY break, release this break.
The brake light on most vehicles is not only an indicator that the parking brake is on, but that there is a problem with the system.
Check brake fluid level Check to see that emergency brake is fully released
One possible reason is that the brake linings are worn to the point that they need to be replaced. This is meant to be an early indicator of brake wear.
my brake light stay on but emergency brake is unhooked
You have a bad ground on that brake light bulb.
Typically the light will remain on if the fluid is low, or maybe the ebrake just pulled just enough that it is on..... or the switch that is triggered by the handle is faulty
probably the parking brake indicator
replace front brake pads
Probably a brake light switch.
STICKING BRAKE LIGHT SWITCH AT THE TOP OF THE BRAKE BEDAL
Bent brake light switch bracket above the brake pedal.