Re: miele w149
Not sure of thenexact location of the switch, but if you look at the iner part of the door you should see some sort of locating lug on there, this is the part that locates in to the door locking switch..
Also worth checking that the drum is in the correct location, before closing the lid..
By that i mean that the drum access door is at the top..
As for the other flashing lights
Turn the power of at the machine
Turn dial to finish/end of programme
Turn machine back on
And then re select programme
If its still flashing..then its time to call a qualified engineer..
Martin