Power fold wing mirror broken

Hi All,

Just registered on this forum so 'hello' and thanks for making this such a great resource for RS owners!
Having just fallen foul of a rusted and rotten cross member strut my latest issue is that the drivers side wing mirror does not fold in when I twist the power fold knob. It adjusts perfectly and everything else is fine. Renault want to replace the whole wing mirror (this just seems crazy to replace the whole thing for one broken motor!?) Any ideas and thoughts will be greatly appreciated.

Thanks,

MMS