Roll-Over Protection System - Aston Martin DB11 Owner's Handbook Manual

Over-speed Operation
Vehicle speed should be below 55 km/h (34 mph) when the roof
is operated.
If the vehicle speed exceeds 55 km/h (34 mph), the convertible
roof will stop opening or closing. This can restrict the view from
the rear of the vehicle and can cause an accident. Reduce the
vehicle speed to below 50 km/h (31 mph). Press the roof switch
again to continue roof operation.
When safe to do so, continue the roof movement. If the roof is
left in it's paused position for seven minutes, hydraulic pressure
will be lost in the roof mechanism. The roof and tonneau lid will
relax and drop down.
11.4
Convertible Roof

Roll-Over Protection System

Warning: Do not attempt to service or modify the
deployable roll-bar system.
Warning: Do not allow any person to sit on the
deployable roll-bar covers at any time.
Warning: Do not place any objects on the top of the
deployable roll-bar covers.
Warning: Do not attempt to reset the deployable roll-bar
system after it has deployed.
Warning: Do not attempt to raise or lower the roof after
the deployable roll-bar system has deployed.
Caution: If the roof is raised the deployable roll-bars will
break through the rear glass.
Caution: Extreme manoeuvres may cause the vehicle
system to predict a roll-over event and activate the roll-over
protection system. If such driving is anticipated by the
customer (track day driving, for example) the roof should be
fully lowered so the roll-bars can be deployed without
damaging the vehicle.