155 can`t be better
Join Date: Jan 2015
Inside the mirror you have a casing which holds two small motors with multiple gears,one motor to tilt up and down and the other to move side to side.
If when pressing the switch you can hear the motor running but the mirror does not move than it is because the gears are warn down or broken (unrepairable)
If you can`t hear motor working then it probably is an electrical fault or the motor has burnt out .
In any case it is best to just re-place with new . not an easy task as removing is a job not for the faint hearted.