BMW G12 - Page 110

G12�Driver�Assistance�Systems
18.�Parking�Maneuver�Assistant
104
18.3.�Control�unit
In�vehicles�with�the�Parking�Maneuver�Assistant�optional�equipment�(OE�5DP),�the�Park�Distance
Control�and�Parking�Maneuver�Assistant�functions�are�provided�by�the�PMA�control�unit.
G12�control�unit�for�Parking�Maneuver�Assistant�(PMA)
18.4.�Functional�principle
The�Parking�Maneuver�Assistant�function�facilitates�maneuvering�into�parking�spaces�that�are�parallel
(parallel�parking)�and�perpendicular�(bay�parking)�to�the�roadway.�The�system�measures�potential
parking�spaces�when�driving�past�at�a�speed�below�approximately�35km/h�without�the�system�having
been�activated.
The�parking�spaces�are�measured�by�two�additional�ultrasonic�sensors,�which�are�integrated�into�the
front�wheel�arch.�These�two�sensors�are�connected�to�the�Parking�Maneuver�Assistant�(PMA)�control
unit,�which�also�incorporates�the�Park�Distance�Control�function.�The�function�of�the�two�ultrasonic
sensors�is�similar�to�that�of�the�Park�Distance�Control�PDC.�Ultrasonic�pulses�are�sent�and�echo
impulses�are�received.
Two�additional�ultrasonic�sensors�are�installed�in�the�rear�bumper�of�the�G12�to�precisely�detect�the
size�of�a�transverse�parking�space�during�the�parking�maneuver.�The�additional�ultrasonic�sensors
measure�the�distance�to�detected�objects.
If�a�parking�space�of�a�sufficient�length�and�width�is�found�and�the�system�is�activated,�the�driver�is
shown�the�space�on�the�central�information�display.
The�Parking�Maneuver�Assistant�function�then�takes�over�the�vehicle�handling�entirely,�including
steering,�braking�and�gear�selection.
Spaces�that�do�not�have�a�vehicle�at�either�side�are�also�recognized�as�suitable�parking�spaces.�This
makes�it�possible�to�park�behind�only�one�object.
The�driver�is�still�responsible�for�monitoring�the�vehicle�environment�and�can�intervene�in�the
automatic�parking�maneuver�at�any�time�if�required�due�to�the�vehicle�environment.�When
searching�for�a�parking�space�and�when�parking,�all�relevant�information�is�presented�to�the�driver
in�an�integrated�display;�from�the�parking�space�itself�to�the�status�of�the�parking�assistant�and
corresponding�handling�instructions�through�to�distances�from�other�objects.