Personally I love dismantling things and seeing how they work. I would completely dismantle one of the mirrors, either the original or the replacement, and try and figure out what has gone wrong.
I have never done it with a Jazz but have done so on other cars (non self folding) and found the folding hinge incorporates a sprung notch that holds the mirror firm but springs out and allows it to fold in if you use enough manual force. This also acts as a safety device ,minimising injury to pedestrians or damage if you have an accidental mirror strike. I dont know but suspect that even an electric folding mirror will incorporate this safety breakaway. But an electric folding mirror might in the form of a deliberate weakness in the winding motor gears etc. (maybe simple nylon cogs etc)
On one manual mirror I found that the part of the hinge with the catch has snapped off completely following a strike and was beyond repair. But who knows. Maybe with a bit of ingenuity and cannibalising of parts you may be able to make one good mirror out of two faulty ones.
Or if all else fails, you may be able to recoup some of your costs by selling just the colour coded cover(s) or risk buying another used one in the wrong colour and swop covers.
