Recently I bought a used car, Toyota Corolla CE 2001 make. The roog light does not work. I think bulb must be dead. Want to replace it. It is covered with plastic cover. I can't see the way to remove it so that I can't replace the fused bulb, can't see any screws. Do n't want to spend on mechanic becoz they wd be charging too much. So can someone please tell the way out to open that plastic lid. Would really appreciate that.