It should go on when the brake is on and off when you release the brake.
you reset your car. It should be in the trunk.
TAKE YOUR FOOT OFF THE BRAKE!!! If your brake fluid is low the brake light will be on, there is a float inside the brake fluid reservoir, after you fill it up, if the light is still on take the cap bake off of the reservoir and make sure that the float is floating, if it isn't wiggle it around with your finger and it should pop to the top.
The light should be controlled by a switch operated by the emergency brake handle. The switch could be out of adjustment or could be bad.
you open the truck or hatch and there should be a panel that comes off and u take it off and twist the light out change the bulb and place the light back in and put the panel back on the panel should be located on the inside of where the brake light is at
Check the brake light switch. It should be mounted on the upper part of the brake pedal or the brake pedal frame. If the brake lights go off when you unplug it you have a stuck or shorted switch.
There are several reasons why the dashboard brake light won't go off on a 2000 Mercedes ML430. One reason could be a short in the wiring system. If your light is off you should take your car into a mechanic to have them look at it.
Im not sure what you mean by RELAY brake light switch. There is 1 brake light switch on the brake pedal. Check it with an OHM meter,wires disconnected brake off should be "open" (no connection) press the pedal and should have no resistance (0 OHMS)
you ask it to stop
you need a new brake pressure differential switch
take panels on the inside of the trunk off and they should be right behind the taillights 3rd brake light is on the bottom of the back dash
The brake light switch is broken or out of adjustment.
switch off