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Safety and Security
Driving safety systems
When you step quickly on the brake pedal
in an emergency braking situation,
BAS Plus automatically regulates the
brake power boost to a level that is suit-
able for the traffic situation.
If BAS Plus requires a particularly high
brake power boost, PRE-SAFE
®
is activat-
ed at the same time.
̈ Keep constant pressure on the brake
pedal until the emergency braking situ-
ation is over.
During this process, ABS prevents the
wheels from locking up.
The brakes will resume normal operation
after
ț the brake pedal is released
ț no obstacles are detected in your path
ț the system no longer senses a risk of a
collision
BAS Plus is deactivated.
BAS Plus can react to stationary obstacles
such as standing or parked vehicles at
road speeds of up to approximately
40 mph (70 km/h).
BAS Plus can only assist you when the
radar sensors are switched on and func-
tional. You can check whether the sensors
are active by switching on DISTRONIC
Plus* (
୴ page 411) or using the “Radar
sensor” menu (
୴ page 272) in the instru-
ment cluster control system.
Warning! G
BAS Plus will only respond with brake assis-
tance if it has clearly detected an object. De-
tection can be impeded by
ț dirty or covered sensors
ț snowfall or heavy rain
ț disturbance from other radar sources
ț strong radar reflection such as in park-
ing garages
BAS Plus uses radar signals that are not re-
flected well by narrow objects and absorp-
tive materials. For this reason BAS Plus will
not react to
ț persons and animals
ț approaching traffic or cross-traffic
BAS Plus may not detect narrow vehicles
driving in front of you, such as motorcycles
and vehicles driving offset from your vehicle
center.