I am not entirely familiar with the 100 series but here goes, frequently different circuits share a fuse, does the cigarette lighter still have power? is anything else not working as expected?
I suspect the vehicle has a dead short and the fuse is doing it's job, if the blue tooth device was heavy enough it may have damaged the internals of the cigarette lighter causing the fault?
chasing electrical gremlins is often time consuming and not always fun.