Interior door trim removal?

[MarkP]

Im looking to remove my interior door trim so i can disconnect the door lock heater. I need to see if its causing my battery drain.
The only part of the door that im not sure of is the part where the buttons to adjust the mirrors are housed. Does this pop out or are there hidden screws?
Anyone know if there is also a door lock heater on the passenger side too?

[Simon]

Hi mate, use a very small flat blade screw driver to pop the mirror adjust switch out, there is a screw holding the doorcard on hidden behind here too.
I would imagine there is only a element on the drivers lock.