Mercedes-Benz Metris Operator's Manual page 129

System limits Syst em 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
R
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
R
If vehicles are not driving in the middle of their
R
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
Spot Assist Currently Unavailable See Operator's
Manual message appears in the instrument cluster
display.
A A ctiv ctivating/deactiv ating/deactivating Blind Spo ating Blind Spot Assist
On-board computer:
DriveAssist Blind Spot Assist
4 5
T T o activ o activat ate/deactiv e/deactivat ate: e: press the a button.
#
%
Additionally, the status overview in the assis-
tance menu also displays the status of Blind
Spot Assist ( page 141).
/
If you switch on the vehicle while Blind Spot Assist
is activated, the warning lamps in the outside mir-
rors light up for approx. 1.5 seconds.
R R ear Cr ear Cross oss Tr Tra c a c Alert Alert
F F unction of R unction of Rear Cr ear Cross oss Tr Tra c a c Alert
%
The system is only available for vehicles with
Blind Spot Assist.
The system uses the radar sensors in the bumper.
This way the area adjacent to the vehicle is contin-
ually monitored. If the radar sensors are obscured
by vehicles or other objects, detection is not possi-
ble.
%
Also read the notes on Blind Spot Assist
( page 126).
/
The system can warn of crossing tra c when
backing up out of a parking space. If the system
detects a vehicle, the warning lamp in the outside
mirror on the corresponding side lights up red. In a
critical situation, an additional warning tone
sounds.
The Rear Cross Tra c Alert function is active
under the following conditions:
R
R
The Rear Cross Tra c Alert function is unavailable
when driving with a trailer.
Lane Keeping Assist Lane K
F F unction of Lane K unction of Lane Keeping Assist
Lane Keeping Assist serves to protect you against
unintentionally leaving your lane. You are also
warned by a noticeable vibration in the steering
wheel and by the status symbol ashing in the
instrument cluster. Lane Keeping Assist is only an
aid and is not intended to keep the vehicle in the
Blind
lane without the driver's cooperation.
Observe the notes on driving systems and your
responsibility; you may otherwise fail to recognize
dangers (
t Assist
The function is available in the speed range
between 40 mph (60 km/h) and 125 mph
(200 km/h).
The warning is issued when the following condi-
tions are met at the same time:
R
R
To ensure that you are warned only when neces-
sary and in good time if you cross the lane mark-
ing, the system detects certain conditions and
warns you accordingly.
The warning vibration occurs earlier under the fol-
Alert
lowing conditions:
R
R
R
The warning vibration occurs later under the fol-
lowing conditions:
R
R
Driving and parking 127
Blind Spot Assist is activated.
Reverse gear is engaged or the vehicle is back-
ing up at walking pace.
eeping Assist
eeping Assist
page 108).
/
If Lane Keeping Assist detects lane markings.
If a front wheel drives over lane markings.
You approach the outer lane marking on a
curve.
The road has very wide lanes, e.g. a freeway.
The system detects solid lane markings.
You are driving on a road with narrow lanes.
You cut the corner on a curve.
127