BMW 4 Series Owner's Manual page 140

Controls
▷ On bumpy road surfaces such as gravel
roads.
▷ On slippery ground.
▷ On steep uphill or downhill grades.
▷ When leaves or snow has collected in the
parking space.
Limits of ultrasonic measurement
The detection of objects can reach the physi‐
cal limits of ultrasonic measurement, e.g., in
the following circumstances:
▷ With tow bars and trailer hitches.
▷ With thin or wedge-shaped objects.
▷ With elevated, protruding objects such as
ledges or cargo.
▷ With objects with corners and sharp edges.
▷ With objects with a fine surface structure,
such as fences.
Low objects already displayed, e.g., curbs, can
move into the blind area of the sensors before
or after a continuous tone sounds.
High, protruding objects such as ledges may
not be detected.
The parking assistant may identify parking
spaces that are not suitable for parking.
Malfunction
A Check Control message is displayed.
The parking assistant failed. Have the system
checked.
140
Driving comfort
Online Edition for Part no. 0140 2 909 827 - VI/13
Head-up Display
The concept
This system projects important information
into the driver's field of vision, e.g., the speed.
In this way, the driver can get information with‐
out averting his or her eyes from the road.
Display visibility
The visibility of the displays in the Head-up
Display is influenced by:
▷ Certain sitting positions.
▷ Objects on the cover of the Head-up Dis‐
play.
▷ Sunglasses with certain polarization filters.
▷ Wet roads.
▷ Unfavorable light conditions.
If the image is distorted, check the basic set‐
tings.
Switching on/off
1. "Settings"
2. "Head-Up Display"
3. "Head-Up Display"
Display
Overview
▷ Speed.
▷ Navigation system.
▷ Check Control messages.
▷ Collision warning.