On my 'rocco, when you adjust the right hand door mirror the left one moves too, to a lesser extent, but the right one doesn't move when you adjust the left hand one. So you kind of have to adjust the right one before doing the left. Anyone elses's do that too? Or do i have a gremlin? It seems a little odd, maybe a fault at the switch?
edit; maybe it's so when someone else hops in the car they only have to move the right hand mirror and they both move together. For convenience? I should probably go look in the manual but can't really be arsed.
Both only move when you adjust the right one, just the left one moves when you adjust the left one. I agree it's a bit wierd though. That's why i figured it might have been an electrical fault.
You can certainly either have them move together or separately its in the MFD setup menu - convenience or mirrors? not sure which without being in the car!
1996-1999 Mazda 323 2.0 V6
1999-2002 Celica 190
2002-2005 Celica T-sport
2005-2008 Golf GTi
2008-2011 'Roc 2.0 TSi manual - Rising Blue
2011- ?? Roc 2.0 TSi DSG Indium Grey