I have a 99 S70 been a pretty good car, but now the door open ding sounds continuously and the dome light stays on all the time. Anyone know of a fix for this or a way around it? Maybe you had the problem before and got it repaired. Mechanic says replace the drivers door latch but I want to get a fix that is for sure and not a part replacement at $$$$ high cost without a fix. Appreciate your help.

My vote is for the door Latch assembly as well.

The switch that controls the lights is part of the latch assembly.