Mercedes-Benz S-Class 2019 Operator's Manual page 247

Warnings may be issued in error when driving
close to crash barriers or similar solid lane bor‐
ders. Always make sure that there is sufficient
distance to the side for other traffic or obsta‐
cles.
Warnings may be interrupted when driving along‐
side long vehicles, for example trucks, for a pro‐
longed time.
Blind Spot Assist is not operational when reverse
gear is engaged.
The exit warning may be limited in the following
situations:
When the sensors are covered by adjacent
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vehicles in narrow parking spaces.
When people approach the vehicle.
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In the event of stationary or slowly moving
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objects.
Function of brake application (Active Blind
Spot Assist)
If Active Blind Spot Assist detects a risk of a side
impact in the monitoring range, a course-cor‐
recting brake application is carried out. This is
designed to help you avoid a collision.
The course-correcting brake application is availa‐
ble in the speed range between approximately
20 mph (30 km/h) and 125 mph (200 km/h).
& WARNING Risk of accident despite
brake application of Active Blind Spot
Assist
A course-correcting brake application cannot
always prevent a collision.
Always steer, brake or accelerate your‐
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self, especially if Active Blind Spot
Assist warns you or makes a course-
correcting brake application.
Always maintain a safe distance at the
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sides.
& WARNING Risk of accident despite
Active Blind Spot Assist
Active Blind Spot Assist does not react to the
following:
If vehicles overtake too closely on the
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side, placing them in the blind spot area
Driving and parking 245
Vehicles approaching and overtaking you
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at a greatly different speed
As a result, Active Blind Spot Assist may nei‐
ther give warnings nor intervene in such sit‐
uations.
Always pay careful attention to the traf‐
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fic situation and maintain a safe dis‐
tance at the side of the vehicle.
Active Blind Spot Assist is only an aid. It may fail
to detect some vehicles and is not a substitute
for attentive driving. Always ensure that there is
sufficient distance to the side for other road
users and obstacles.