Mercedes-Benz S-Class 2020 Owner's Manual page 170

Cornering light function
The cornering light improves the illumination of
the carriageway over a wide angle in the turning
direction, enabling better visibility on tight
bends, for example. It can be activated only
when the low beam is switched on.
The function is active in the following cases:
At speeds below 40 km/h when the turn sig‐
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nal light is switched on or the steering wheel
is turned
At speeds between 40 km/h and 70 km/h
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and when the steering wheel is turned
Roundabout and junction function: the cor‐
nering light will be activated on both sides based
on an evaluation of the vehicle's current naviga‐
tion position. It will remain active until after the
vehicle has left the roundabout or the junction.
Motorway mode function
Motorway mode increases the range and bright‐
ness of the cone of light, enabling better visibil‐
ity.
The function is active if a motorway journey is
detected by means of:
the vehicle's speed
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the multifunction camera
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Light and sight 167
or the navigation system
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The function is not active in the following cases:
At speeds below 80 km/h
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Enhanced fog light function
The enhanced fog light function reduces self-
dazzling and improves the illumination of the
edge of the carriageway.
The function is automatically activated under the
following conditions:
At speeds below 70 km/h and when the rear
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fog light is switched on.