BMW 1 Series Reference Manual page 79

Convertible roof closed
Hall sensor, main pillar positioned
Hall sensor, main pillar stowed
Hall sensor, roll bar unclamped
Hall sensor, clamping bar in position (roll bar raised)
Hall sensor, roll bar stowed
Hall sensor, windnield cowl panel closed
Incremental sensor, windnield cowl locking system motor position
Hall sensor, convertible top storage compartment lid locked
Hall sensor, convertible top storage compartment lid open
Microswitch, Trunk partition down position
Sensor State
yes
no
yes
no
yes
yes
Lock closed
yes
no
yes
51
E88 Complete Vehicle