Before you mess with the "dirty switch", put the left/right switch in the middle position. Then use the "fold in fold back" mirror switch to the right of the left/right switch to cause the mirrors to fold to the side of the car. It is possible the mirrors need to be "re-set".
After you have folded the mirrors to the side of the car with the switch a couple of times, then try to see if you can now adjust the mirrors properly. If someone has tried to move your mirrors by hand from the outside of the car, your mirrors may need to be "re-set" using the fold back switch.
