Active Parking Assist is an electronic parking assistance system, which uses ultrasound with the assistance of the reversing camera and 360° Camera. When you are driving forwards up to approximately 35 km/h, the system automatically measures parking spaces on both sides of the vehicle.
Active Parking Assist offers the following functions:
Parking in parking spaces parallel to the road
Reversing into parking spaces perpendicular to the road
Parking in parking spaces parallel to the road
Parking in parking spaces perpendicular to the road (optionally either forwards or reverse)
Parking in parking spaces that can only be detected as such due to markings (for example at the roadside)
Exiting a parking space parallel to the road
Exiting a parking space perpendicular to the road (optionally either left or right)
Active Parking Assist is only an aid. It is not a substitute for your attention to the surroundings. The responsibility for safe manoeuvring and parking remains with you. Make sure that no persons, animals or objects etc. are in the manoeuvring range.
If Active Parking Assist is available, the 
message appears in the driver's display. When the system detects parking spaces, 
appears. The arrows show on which side of the road free parking spaces are located. These are then shown in the central display.
When Active Parking Assist is activated, the turn signal indicators are activated based on the calculated path of your vehicle. When you are entering or exiting a parking space, the procedure is assisted by acceleration, braking, steering and gear changes.
To start the parking procedure, press the 
button More.
You deactivate Parking Assist PARKTRONIC.
You press the
button again. You begin steering.
You engage transmission position
. ESP® intervenes.
You open the driver's door.
If the exterior lighting is malfunctioning, Active Parking Assist is not available.
Objects located above or below the detection range of Active Parking Assist, such as overhanging loads, overhangs or loading ramps of goods vehicles or the borders of parking spaces, are not detected during measurement of the parking space. These are also then not taken into account when calculating the parking procedure. In some circumstances, Active Parking Assist may therefore guide you into the parking space prematurely or brake too late.
Certain environmental conditions, such as snowfall or heavy rain, may lead to a parking space being measured inaccurately. Parking spaces that are partially occupied by trailer drawbars might not be identified as such or be measured incorrectly. Only use Active Parking Assist on level, high-grip ground.
Active Parking Assist may steer too early.
The vehicle may not stop in front of these objects.
There is a danger of collision!
Active Parking Assist can also display unsuitable parking spaces, e.g. parking spaces in which parking is not permitted or parking spaces on unsuitable surfaces.
In extreme weather conditions such as ice, packed snow or in heavy rain.
When transporting a load that protrudes beyond the vehicle.
If the parking space is on a steep downhill or uphill gradient.
When snow chains are fitted.
When a trailer or bicycle rack is attached.
Directly after a tyre change or when spare tyres are fitted.
If the tyre pressure is too low or too high.
If the suspension is out of alignment, e.g. after bottoming out on a kerb.
On steep inclines of more than approximately 15%.