Rear-View Mirror - Pass. side won't Dip

[Boothville]

Does anyone know how to fix a dipping rear view passenger side mirror? Mine has been OK for 80,000 miles, but recently appears to have reset itself to inverse mode, whereby it turns UP when reverse gear is selected, rather than DOWN. Handy for watching pedestrians, but no good for parking near to kerb!

 

[television]

Have you tried to re set it in the seat memory