When the dome light stays on in an slk320 one of several things could be causing it. A door switch could be bad, the manual light switch could be stuck, or the light relay could be stuck. Any of these could cause the problem.
dome light stays on ford taurus
Thia dome light comes in assembly and more than likely you need to replace it....
Either one of the door switches is broken or the dome light switch on the dash is turned on.
Be sure the dome light switch is not turned on manually.
try looking at the swithes located where you door hinges are one of them might be shorted out causing your dome light to stay on.
on the side of the dash
If it stays on all the time it will drain the battery
Sounds like a faulty headlight on-off switch.
The switch located on the door frame may be broken is a dome light stays on in a Mercury Sable. The switch may need to be repaired. If that is not the issue, a mechanic can diagnose the issue. Another way to help find a solution is to look in the owner manual or repair book for the car.
its on the timer. check owners manuel to set to the delay you would like
sounds like GEM mod. is bad
http://wiki.answers.com/Q/What_could_be_the_problem_when_the_dome_light_for_a_1995_GMC_Sonoma_stays_on_even_when_truck_is_off"