My Mazda 6,69 plate gt sport nav +,I just noticed the passenger wing mirror was not closing properly when locking car.
It's only done 5, 000 miles since new so surprised it's doing this, anyway had some wd40 silicone in house
so gave both mirror motors a spray or two and it did the fix.
I adjusted both mirrors to full open so easier for nozzle to go in,i think a spray or two now and again to keep mechanism
lubricated would be a good idea.