Aston Martin DB 9 2010 Manual page 112

It is not possible to start Roof operation at speeds of 30 mph (50 km/
h) or above. 'No Roof Operation Possible' will show in the message
centre (right), the amber warning triangle
audible warning will sound.
While operating the Roof, if the Roof switch is released when
travelling at 30 mph (50 km/h) or more, no Roof movement will be
available until the vehicle speed drops below 30 mph (50 km/h).
6.4
Lowering the Roof
Warning: Roof movement has not finished and locked until
will show and a single
'Roof Movement Complete' shows in the message centre (right).
The Roof operation switch (B) is located on the centre console.
B
If the door and rear quarter windows are
required to be opened continue to press the
switch after 'Roof Movement Complete'
shows until the windows have opened.
If at any time during the raising or lowering
procedure the switch is released, Roof
movement will stop immediately.
Push the Roof switch rearwards and hold until
'Roof Movement Complete' shows in the
message centre (right).