BMW Z4 Roadster Owner's Handbook Manual page 176

CONTROLS
At low speeds, the vehicle can be braked to a
stop.
The brakes are only applied if driving stability has
not been impaired, for example by deactivation of
Dynamic Stability Control DSC.
Braking can be discontinued either by depress‐
ing the accelerator pedal or by actively moving
the steering wheel.
The detection of objects may be limited. Take
into account the detection range limits and the
functional limitations.
System limits
Safety note
WARNING
The system may not respond at all, or may re‐
spond too late, incorrectly or without justifica‐
tion due to limits of the system. There is a dan‐
ger of accidents or damage to property.
Observe the information on the system limits
and intervene actively if necessary.
Upper speed limit
The system reacts to pedestrians and cyclists if
your own speed is below approx. 80 km/h,
50 mph.
Detection range
The detection ability of the system is limited.
As a result, the system may fail to give warnings
or may give warnings late.
It is possible that the following are not detected,
for example:
▷ Partially concealed pedestrians.
▷ Pedestrians who are not detected as such,
because of the viewing angle or outline.
▷ Pedestrians outside the detection range.
▷ Pedestrians less than approximately 80 cm,
32 in tall.
176
Safety
Functional limitations
The system may have limited functionality in
some situations, for example:
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Lane Departure Warning
Principle
The Lane Departure Warning issues a warning if
the vehicle leaves the road or its lane.
General
This camera-based system warns once a mini‐
mum speed has been reached.
The minimum speed is country-specific and is
displayed in the menu for the Intelligent Safety
Systems.
Warnings are issued by means of a steering
wheel vibration. The strength of the steering
wheel vibration can be adjusted.
The system does not issue a warning if the driver
indicates before leaving the driving path.
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In thick fog, wet conditions or snow.
On sharp bends.
If vehicle stability control systems are deacti‐
vated, for example DSC OFF.
If the field of view of the camera or the wind‐
screen in front of the rear-view mirror is soiled
or covered.
If the camera has overheated due to exces‐
sively high temperatures and has been tem‐
porarily deactivated.
Depending on the equipment version: if the
radar sensors are soiled or covered.
Up to 10 seconds after starting the engine
using the start/stop button.
During the camera calibration process imme‐
diately after vehicle delivery.
When there is sustained glare due to oncom‐
ing light, for example the sun is low in the sky.
In the dark.