Mercedes-Benz CLA 2020 Operator's Manual page 185

The system may also be impaired or may not
function in the following situations:
The sensors in the rear bumper are dirty,
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damaged or covered by a sticker or ice and
snow, for example.
The exterior lighting shows a fault.
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% The Active Lane Change Assist sensors
adjust automatically while a certain distance
is being driven after the vehicle has been
delivered. Active Lane Change Assist is
unavailable or only partially available during
this teach-in process; no arrow appears next
to the Ø Active Steering Assist symbol
when the turn signal indicator is activated.
Activating/deactivating Active Lane Change
Assist
Multimedia system:
© Settings Assistance
4 5 5
Active Lane Change Assist
5
Activate or deactivate the function.
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Function of Active Emergency Stop Assist
If the driver continually ignores the visual or
acoustic warning to put their hands on the steer‐
ing wheel, the Beginning Emergency Stop
sage appears in the multifunction display. If the
driver still does not respond, Active Distance
Assist DISTRONIC reduces the speed. The vehi‐
cle is decelerated in stages to a standstill.
Depending on the country, at speeds below
40 mph (60 km/h) the hazard warning lights
switch on automatically.
When the vehicle is stationary, the following
actions are carried out:
The vehicle is secured with the electric park‐
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ing brake
Active Distance Assist DISTRONIC is ended
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The vehicle is unlocked
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If possible, an emergency call is placed to
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the Mercedes-Benz emergency call center
The driver can cancel the deceleration at any
time by performing one of the following actions:
Steering
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Braking or accelerating
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Pressing a steering-wheel button
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Operating Touch Control
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Driving and parking 183
mes‐ Activating or deactivating Active Distance
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Assist DISTRONIC
Overview of Active Distance Assist
DISTRONIC displays in the instrument clus‐
ter
The assistance graphic and the status display
show the status of the following functions in the
instrument cluster:
Active Distance Assist DISTRONIC
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Route-based speed adaptation
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Active Steering Assist
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