Check for a defective door switch that has become ground against body or headlight switch
Check the fuse?
The main dome light control switch is turned off.
The awnser is......
The brake light switch is broken or out of adjustment. The brake light switch is attached to the brake pedal lever above the brake pedal pad.
A door switch may be broken or out of adjustment or the dome light switch on the dash is turned on.
Does the bulb need to be replaced?
it is obviously broken. you'll need a new light fixture
The headlight switch also opperates the dome light... insted of pulling it out, just turn it like a door knob... if that doesnt work then it might be a fuse, the same fuse that works stuff like the radio also works the dome light. A 2008, I would bring it back to the dealer.
Spray some WD-40 on all the inside door jams this will fix the problem.
Check stop light switch for misadjustment or defect
It wont turn off. It stays on just to let you know that your car isn't losing traction.
Take the light out. You might have a bad switch in the door frame. When the door closes- it pushes a switch which I believe opens a circuit and shuts off your light. If the switch is bad it wont open the circuit and the light stays on.