2010 MERCEDES-BENZ R320 stop start

In order to ensure proper operation of the air
bag system and OCS:
R
Do not place more than 4.4 lb
(2 kg) into
the parcel net on the back of the front
passenger seat. Otherwise, the OCS may
not be able to properly approximate the
occupant weight category.
R Do not place objects under and/or around
the front passenger seat.
R Do not hang anything from or attach any
items to the seats.
R Do not stuff objects such as books between
the front passenger seat and the center
console or front passenger door.
R Do not move the front passenger seat
backwards against stiff objects.
R Sit with the seat belt properly fastened in a
position that is as upright as possible with
your back against the seat backrest.
R While seated, an occupant should not
position him/herself in such a way as to
cause the occupant’s weight to be lifted
from the seat bottom as this may result in
the OCS being unable to correctly
approximate the occupant’s weight
category.
R Read and observe all warnings in this
chapter.
OCS Self-test After turning the SmartKey in the starter
switch to position 1 or 2 or pressing the
KEYLESS-GO start/stop button once or
twice, the 42 indicator lamp
illuminates. If an adult occupant is properly
sitting on the front passenger seat and the
system classifies the occupant as an adult,
the 42 indicator lamp will
illuminate and go out after approximately
6 seconds.
If the seat is not occupied and the system
classifies the front passenger seat as being empty, the 42 indicator lamp
will illuminate and not go out. G
Warning!
If the 42
indicator lamp does not
illuminate, the system is not functioning. You
must contact an authorized Mercedes-Benz
Center before seating any child on the front
passenger seat.
For more information, see the “Practical
hints” section ( Y page 307). G
Warning!
Never place anything between seat cushion
and child seat (e.g. pillow), since it reduces
the

effectiveness of the OCS. The bottom and
back of the child seat must make full contact
with the passenger seat cushion and
backrest.
If necessary, adjust the tilt of the passenger
seat backrest.
An incorrectly mounted child seat could cause
injuries to the child in case of an accident,
instead of increasing protection for the child.
Follow the manufacturer’s instructions for
installation of child seats. BabySmart™ air bag deactivation
system
The

BabySmart™ air bag deactivation system
is standard equipment in Canada. G
Warning!
According to accident statistics, children are
safer when properly restrained in the rear
seating positions than in the front seating
position. Thus, we strongly recommend that
children

be placed in the rear seats whenever
possible. Regardless of seating position,
children 12 years old and under must be
seated and properly secured in an appropriate
infant restraint, toddler restraint, or booster
seat recommended for the size and weight of
the child. Occupant safety
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Special BabySmart™ compatible child seats,
designed for use with the Mercedes-Benz
system, are required for use with the
BabySmart™ air bag deactivation system.
Please contact an authorized Mercedes-Benz
Center for information on availability. With
the special child seat installed properly, the
front passenger front air bag will not deploy.
The
42 indicator lamp : will be
illuminated, except with the SmartKey
removed from the starter switch or with the
starter switch in position 0.
The system does not deactivate
R the side impact air bag
R the window curtain air bag
R the Emergency Tensioning Device (ETD)
Self-test BabySmart™ without special
child seat installed After turning the SmartKey in the starter
switch to position 1 or 2 or pressing the
KEYLESS-GO start/stop button once or
twice, the 42 indicator lamp
comes on for approximately 6 seconds and
then goes out.
If the
42 indicator lamp should
not come on or is continuously lit, the system
is not functioning. You must see an
authorized Mercedes-Benz Center before
seating any child on the front passenger seat.
More information can be found in the
“Practical hints” section (Y page 307). G
Warning!
Do not place powered-on laptops, mobile
phones, electronic tags such as those used in
ski passes and like electronic devices on the
front passenger seat. Signals from such
devices may interfere with the BabySmart™
air bag deactivation system. Such signal
interference may cause the 42
indicator lamp not to come on during self-test.
The SRS indicator lamp + and/or the
42 indicator lamp could be
continuously lit, indicating that the system is
not functioning. The front passenger front air
bag could deploy inadvertently or fail to
deploy in an accident. G
Warning!
The BabySmart™ air bag deactivation system
will ONLY work with a special child seat
designed to operate with it. It will not work
with child seats which are not BabySmart™
compatible.
Never place anything between seat cushion
and child seat (e.g. pillow), since it reduces
the effectiveness off the BabySmart™ air bag
deactivation system. The bottom of the child
seat must make full contact with the front
passenger seat cushion. An incorrectly
mounted child seat could cause injuries to the
child in case of an accident, instead of
protecting the child.
Follow the manufacturer’s instructions for
installation of special child seats. Seat belts
Safety notes The use of seat belts and infant and child
restraint systems is required by law in all 50
states, the District of Columbia, the U.S.
territories and all Canadian provinces.
Even where this is not the case, all vehicle
occupants should have their seat belts
fastened whenever the vehicle is in motion. Occupant safety
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Seat belt adjustment function
The seat belt adjustment function adjusts the
seat belts on both front seats to the upper
body
of the respective vehicle occupant. The
seat belt will be pulled slightly tighter for that
purpose when
R you engage the latch plate into the buckle
and then turn the SmartKey in the starter
switch to position 2
R the SmartKey in the starter switch is in
position 2 and you then engage the latch
plate in the buckle
The seat belt adjustment function takes place
with a certain amount of retracting force
when the system senses slack between the
vehicle occupant and the seat belt. Do not
retain the seat belt during this procedure. You
can activate or deactivate the seat belt
adjustment function via the control system
(Y page 138).
Releasing the seat belts X
Press seat belt release button ?
(Y page 50).
Allow the retractor to completely rewind
the seat belt by guiding latch plate ;
(Y page 50).
! Make sure the seat belt retracts
completely.

Otherwise the seat belt and/or
latch plate could get caught or pinched in
the door or in the seat mechanism. This can
damage the seat belt and impair its
effectiveness, and/or cause damage to the
door and/or door trim panel. Such damage
is not covered by the Mercedes-Benz
Limited Warranty.
Damaged seat belts must be replaced.
Contact an authorized Mercedes-Benz
Center.
Enhanced seat belt reminder system When the engine is started, the seat belt
telltale
7 will always illuminate for 6 seconds to remind you and your passengers
to fasten your seat belts.
If the driver’s seat belt is not fastened when
the engine is started, an additional warning
chime

will sound. The warning chime goes out
after approximately 6 seconds or once the
driver’s seat belt is fastened.
If after these 6 seconds the driver’s or the
front passenger’s seat belt (with the front
passenger seat occupied) is not fastened with
front doors closed,
R the seat belt telltale 7 remains
illuminated for as long as either the driver’s
or front passenger’s seat belt is not
fastened.
R and if the vehicle speed once exceeds
15 mph (25 km/h), the seat belt telltale
7 starts flashing and a warning chime
sounds with increasing intensity for a
maximum of 60 seconds or until the
driver’s and front passenger’s seat belt are
fastened.
If you and/or your passenger release the
seat belt during driving, the seat belt
telltale 7 starts flashing and the
warning chime sounds as described before.
If the driver’s or the front passenger’s seat
belt remains unfastened after 60 seconds,
the warning chime stops sounding, the seat
belt telltale 7 stops flashing but
continues to be illuminated.
After a vehicle standstill, the warning chime
is reactivated and the seat belt telltale
7 is flashing again if the vehicle speed
once exceeds 15 mph (25 km/h).
The seat belt telltale 7 will only go out if
both the driver’s and the front passenger’s
seat belt (with the front passenger seat
occupied) are fastened, or the vehicle is
standing still and a front door is opened.
For more information, see “Practical hints”
(Y page 302). Occupant safety
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X
Securing: Press the lever down in direction
of arrow ;.
X Check to make sure the child safety locks
are working properly.
X Releasing: Press the lever up in direction
of arrow :.
Override switch G
Observe Safety notes, see page 55.
With the override switch you can disable the
rear door window switches in the rear door
panels. This can be useful, for instance, when
you have children riding in the rear passenger
compartment. G
Warning!
Activate the override switch when children
are riding in the back seats of the vehicle. The
children may otherwise injure themselves,
e.g. by becoming trapped in the rear door
window opening. X
Activating: Press override switch :.
The switch engages in recessed position. The rear door windows can no longer be
operated using the respective switch
located in the rear doors.
You can still operate the rear door windows
using the switches located on the door
control panel of the driver’s door.
X Deactivating: Press override switch :
again.
The switch disengages from its recessed
position back to its original position.
The rear door windows can be operated
again using the respective switch located
in the rear doors.
For more information on power windows, see
the “Controls in detail” section
(Y page 106). Panic alarm
Example illustration: SmartKey with KEYLESS-GO
X
Activating: Press and hold !
button : for at least 1 second.
An audible alarm and flashing exterior
lamps will operate briefly.
X Deactivating: Press ! button : again.
or
X Insert the SmartKey into the starter switch.
or
X Press the KEYLESS-GO start/stop button.
The SmartKey with KEYLESS-GO must be
inside the vehicle. 62
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ESP
® G
Observe Safety notes, see page 63.
The Electronic Stability Program (ESP ®
) is
operational as soon as the engine is running.
It monitors the vehicle’s traction (force of
adhesive friction between the tires and the
road surface) and handling.
The ESP ®
recognizes that the vehicle deviates
from the direction of travel as intended by the
driver. By applying brakes to individual
wheels and by limiting the engine output, the
ESP ®
works to stabilize the vehicle. The
ESP ®
is especially useful while driving off and
on wet or slippery road surfaces. The ESP ®
also stabilizes the vehicle during braking and
steering maneuvers.
The ESP ®
warning lamp d in the
instrument cluster comes on when you switch
on the ignition. It goes out when the engine
is running.
The ESP ®
warning lamp d in the
instrument cluster flashes when the ESP ®
is
engaged. G
Warning!
Never switch off the ESP ®
when you see the
ESP ®
warning lamp d flashing in the
instrument cluster. In this case proceed as
follows:
R When driving off, apply as little throttle as
possible.
R While driving, ease up on the accelerator
pedal.
R Adapt your speed and driving style to the
prevailing road conditions.
Failure to observe these guidelines could
cause the vehicle to skid. The ESP ®
cannot
prevent accidents resulting from excessive
speed.
! Only

conduct operational or performance
tests on a two-axle dynamometer. If such
tests are necessary, contact an authorized Mercedes-Benz Center. You could
otherwise seriously damage the brake
system or the transfer case which is not
covered by the Mercedes-Benz Limited
Warranty.
! Because the ESP ®
operates
automatically,

the engine and ignition must
be shut off (SmartKey in starter switch
position 0 or 1 or KEYLESS-GO start/stop
button in position 0 or 1) when the parking
brake is being tested on a brake test
dynamometer. Such testing should be no
longer than 10 seconds.
Active braking action through the ESP ®
may otherwise seriously damage the brake
system which is not covered by the
Mercedes-Benz Limited Warranty.
! The ESP ®
will only function properly if you
use wheels of the recommended tire size
as specified in the “Technical data” section
of this Operator’s Manual.
i The Distronic system and cruise control
switch off automatically when the ESP ®
engages.
Electronic Traction System (4-ETS) G
Observe Safety notes, see page 63.
The 4-ETS (four-wheel Electronic Traction
System) is a component of the ESP ®
. The
4-ETS

improves the vehicle’s ability to utilize
available traction, especially under slippery
road conditions by applying the brakes to a
spinning wheel. In addition, more power is
transferred to the wheel(s) with traction.
When you switch off the ESP ®
, the 4-ETS is
still enabled.
Switching off the ESP ® G
Warning!
The ESP ®
should not be switched off during
normal driving other than in the Driving safety systems
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X
Arming: Lock the vehicle with the
SmartKey or with KEYLESS-GO.
The turn signal lamps flash three times to
indicate that the vehicle is locked. Indicator
lamp : flashes to indicate that the alarm
system is armed.
i If the turn signal lamps do not flash three
times, a door or the tailgate may not be
properly closed.
Close the respective element.
X Disarming: Unlock the vehicle with the
SmartKey or with KEYLESS-GO.
The turn signal lamps flash once to indicate
that the alarm system is disarmed.
i Unless you open a door or the tailgate
within approximately 40 seconds after
unlocking the vehicle:
R The vehicle will be locked again.
R The anti-theft alarm system will be
rearmed. Canceling the alarm
To cancel the alarm, do one of the following:
X Insert the SmartKey into the starter switch.
X Press button % or & on the
SmartKey.
In vehicles with KEYLESS-GO:
X Grasp an outside door handle. The SmartKey must be within 3 ft (1 m) of
the vehicle.
X Press the KEYLESS-GO start/stop button.
The SmartKey must be inside the vehicle. 68
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Important notes on using KEYLESS-GO
R
You can also use the SmartKey with
KEYLESS-GO like a normal SmartKey
(Y page 70).
R You can combine KEYLESS-GO functions
with normal SmartKey functions (e.g.
unlocking with KEYLESS-GO and locking
with button &).
R Always carry the SmartKey with you.
R Never store the SmartKey together with:
-Electronic
items such as a mobile phone
or another SmartKey
- Metallic objects such as coins or metal
foil
Doing so could impair the function of the
KEYLESS-GO system.
R To lock or unlock the vehicle, the SmartKey
must be located outside the vehicle within
approximately 3 ft (1 m) of a door or the
tailgate.
R When the vehicle has been parked for more
than 72 hours, the KEYLESS-GO function is
deactivated. Pull an outside door handle
and switch on the ignition once to activate
the KEYLESS-GO function.
R If the SmartKey is positioned farther away
from the vehicle, the system may no longer
recognize the SmartKey. The vehicle
cannot be locked or the engine started via
the KEYLESS-GO system.
R If the SmartKey is removed from the vehicle
(e.g. if a passenger exits the vehicle with
the SmartKey)
-when pressing the KEYLESS-GO start/
stop button or trying to lock the vehicle
with the lock button on an outside door
handle the message Key Not
Detected appears in the multifunction
display
- with the engine running, the red message
Key Not Detected appears in the
multifunction display while driving off Find the SmartKey or change its present
location immediately (e.g. place it on the
front passenger seat or insert it in shirt
pocket).
R If you have started the engine with the
KEYLESS-GO start/stop button, you can
turn it off again by
-pressing the KEYLESS-GO start/stop
button
- inserting the SmartKey into the starter
switch

when the vehicle is at a standstill
and the automatic transmission is in park
position P
R The vehicle could be inadvertently
unlocked if the SmartKey is within 3 ft (1 m)
of the vehicle and
-an outside door handle is splashed with
water
or
- you attempt to clean an outside door
handle
R Remember that the engine can be started
by anyone with a SmartKey that is left
inside the vehicle.
Possibility 1 (One SmartKey in the vehicle,
one SmartKey outside the vehicle):
If you leave the SmartKey behind when
exiting and locking the vehicle, no message
appears in the multifunction display.
Possibility 2 (One SmartKey in the vehicle,
no SmartKey outside the vehicle):
When exiting and trying to lock the vehicle,
the message Key Detected In Vehicle
appears in the multifunction display. The
vehicle will not be locked.
Factory setting X
Global unlocking: Grasp an outside door
handle. 72
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X
Push handle : in direction of arrow ; and
hold it there.
X From this position, lift handle : in
direction of arrow = and hold it there.
The tailgate is released and can be opened
manually.
i If you do not open the tailgate within a few
seconds, the tailgate lock will engage again
automatically. Additionally, the tailgate will
relock automatically if the vehicle was
locked when the tailgate was released from
the inside.
If the tailgate lock does not engage
automatically and, if applicable, the tailgate
does not relock after a few seconds, you
have to close the tailgate manually
(Y page 75). Power tailgate
G
Warning!
Make sure the tailgate is closed when the
engine is running and while driving. Among
other dangers, deadly carbon monoxide (CO)
gases may enter vehicle interior resulting in
unconsciousness and death.
! The tailgate swings open upwards
automatically. Always make sure there is
sufficient overhead clearance.
A minimum height clearance of 7.20 ft
(2.20 m) is required to open the tailgate. In vehicles with power tailgate, you can
R
open and close the tailgate from the inside
and the outside electrically
R limit the opening height of the tailgate
R interrupt the opening/closing procedure at
any time by
-pressing or pulling the door-mounted
remote tailgate opening/closing switch
- pulling the outside handle on the tailgate
- pressing the tailgate closing switch
- pressing the KEYLESS-GO locking/
closing switch
Notes for operating the tailgate with the
SmartKey:
You can also open, close, and stop the
tailgate by pressing button F on the
SmartKey.
The prerequisites for this are:
R No SmartKey is inserted in the starter
switch.
R KEYLESS-GO: The vehicle’s on-board
electronics must have status 0
(Y page 80).
Opening the tailgate from the outside You can unlock and open the tailgate
simultaneously from the outside when the
vehicle is stationary.
X
Press and hold button F on the
SmartKey until the tailgate unlocks and
begins to open.
While the tailgate is opening, an acoustic
warning sounds.
or
X Vehicles with KEYLESS-GO: Pull on the
handle ( Y page 75). 76
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