Following some warranty work, the passenger side door mirror starts to fold in but only manages about 20% of its journey.

You can hear the motor engage, the mirror starts to move and then stops dead.

It does fold out when you start the car again.

Any ideas before it goes back again to the dealer?

Cheers

What warranty work was done? Ian

A few things:

S/W upgrade to sort out TV interference (at last).
New control module for deployable side steps (2nd one).
New rear shock absorbers (again).

And a few other minor things.

The battery had obviously been disconnected as the clock/date was wrong, memory setting for seats, etc were all gone.

Any ideas?

Shouldn't have affected the mirror. If it's under warranty I'd let them deal with it. Ian