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Blind Spot Assist
Function of Blind Spot Assist
Blind Spot Assist uses two lateral, rear-facing
radar sensors to monitor the area up to 10 ft
(3 m) behind and 10 ft (3 m) directly next to your
vehicle.
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USA only:
This device has been approved by the FCC as
a "Vehicular Radar System". The radar sensor
is intended for use in an automotive radar
system only. Removal, tampering, or altering
of the device will void any warranties, and is
not permitted by the FCC. Do not tamper
with, alter, or use in any non-approved way.
Any unauthorized modification to this device
could void the user's authority to operate the
equipment.
& WARNING Risk of accident despite Blind
Spot Assist
Blind Spot Assist does not react to either sta‐
tionary objects or vehicles approaching and
overtaking you at a greatly different speed.
Blind Spot Assist cannot warn drivers in these
situations.
Always pay careful attention to the traf‐
#
fic situation and maintain a safe dis‐
tance at the side of the vehicle.
Observe the notes on driving systems and your
responsibility, otherwise you cannot recognize
dangers (
page 109).
/
If a vehicle is detected above speeds of approx‐
imately 20 mph (30 km/h) and this vehicle sub‐
sequently enters the monitoring range directly
next to your vehicle, the warning lamp in the out‐
side mirror lights up red.
If a vehicle is detected close to your vehicle in the
lateral monitoring range and you switch on the
turn signal indicator in the corresponding direc‐
tion, a warning tone sounds. The red warning
lamp in the outside mirror flashes. If the turn sig‐
nal indicator remains switched on, all other
detected vehicles are indicated only by the flash‐
ing of the red warning lamp.
When you overtake a vehicle, the warning only
occurs if the difference in speed is less than
7 mph (11 km/h).
Driving and parking 129
System limits
Blind Spot Assist may be limited in the following
situations:
If there is dirt on the sensors or the sensors
R
are obscured
If there is poor visibility, e.g. due to fog, heavy
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rain, snow or spray
If narrow vehicles are within the monitoring
R
range, e.g. bicycles
If the road has very wide or very narrow lanes
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If vehicles are not driving in the middle of
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their lane
Warnings may be issued in error when driving
close to crash barriers or similar solid lane bor‐
ders. Warnings may be interrupted when driving
alongside long vehicles, for example trucks, for a
prolonged time.
Blind Spot Assist is not operational when reverse
gear is engaged.
If you couple up a trailer, make sure that you have
correctly established the electrical connection.
Blind Spot Assist is then deactivated and the
Blind Spot Assist Currently Unavailable See Oper-
ator's Manual
message appears in the multifunc‐
tion display.
Activating/deactivating Blind Spot Assist
On-board computer:
DriveAssist
Blind Spot Assist
4
5
To activate/deactivate: press the a but‐
#
ton.
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Additionally, the status overview in the assis‐
tance menu also displays the status of Blind
Spot Assist (
page 144).
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If you switch on the ignition while Blind Spot
Assist is activated, the warning lamps in the out‐
side mirrors light up for approx. 1.5 seconds.
Lane Keeping Assist
Function of Lane Keeping Assist
Lane Keeping Assist serves to protect you against
unintentionally leaving your lane. You are also
warned by a vibration in the steering wheel and
by the status symbol flashing in the instrument
cluster. Lane Keeping Assist is only an aid and is
not intended to keep the vehicle in the lane with‐
out the driver's cooperation.
Observe the notes on driving systems and your
responsibility, otherwise you cannot recognize
dangers (
/
page 109).
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