After the ignition is switched off
The roof can still be operated for approx. 1 minute, as long as no door has been opened.
See also:
Coolant temperature
Should the coolant, and with it the engine, become
too hot, a Check Control message is displayed.
Check the coolant level. ...
Coupe: glass roof, electric
To prevent injuries, watch the glass roof while
closing it.
Take the remote control with you when you leave the car; otherwise, children
could operate the roof and possibly injure themselves.
...
Use coasting conditions
When approaching a red light, take your foot off
the accelerator and let the vehicle coast to a halt.
On a downhill gradient, take your foot off the accelerator
and let the vehicle roll.
The flo ...
