Battery Discharge Protection - Opel Automobile Owner's Manual

110 Lighting
Battery discharge
protection
To prevent the battery from becoming
discharged, the exterior lights turn off
automatically 10 minutes after the
ignition is switched off.
Battery discharge protection will not
work if the lights are turned on
10 minutes after the ignition has been
switched off; the key cannot be
removed from the ignition switch until
the battery is recharged.