ESP MERCEDES-BENZ R320 2010 W251 Owner's Guide

X
Always remove the SmartKey from the
starter switch when the engine is not in
operation.
This will help to prevent accelerated vehicle
battery discharge or a completely
discharged vehicle battery.
If the SmartKey cannot be turned in the
starter switch, the vehicle battery may not be
sufficiently charged.
X Check the vehicle battery and charge it if
necessary.
or
X Get a jump start.
i If the SmartKey does not belong to the
vehicle, the SmartKey can be turned in the
starter switch. However, the ignition does
not switch on and the engine does not start. KEYLESS-GO
G
Observe Safety notes, see page 55.
Vehicles equipped with the KEYLESS-GO
feature are supplied with a SmartKey with
integrated KEYLESS-GO function and a
removable KEYLESS-GO start/stop button.
The KEYLESS-GO start/stop button must be
inserted in the starter switch and the
SmartKey present in the vehicle.
Pressing the KEYLESS-GO start/stop button
without depressing the brake pedal
corresponds to the various starter switch
positions (Y page 79).
Pressing the KEYLESS-GO start/stop button
with the brake pedal firmly depressed will
start the engine (Y page 110).
The KEYLESS-GO start/stop button can be
pulled out of the starter switch easily. You can
then insert the SmartKey into the starter
switch.
i The KEYLESS-GO start/stop button does
not need to be removed from the starter
switch when you leave the vehicle.
However, always take the SmartKey with
you when you leave the vehicle. As long as the SmartKey is in the vehicle, the vehicle’s
electrical systems can be switched on or
the engine can be started using the
KEYLESS-GO start/stop button.
:
KEYLESS-GO start/stop button
; Starter switch
X Insert the KEYLESS-GO start/stop button
into the starter switch (if not inserted
already).
X Make sure the automatic transmission is in
park position P.
X Do not depress the brake pedal. KEYLESS-GO start/stop button
=
USA only
? Canada only
Position 0 Before you press the KEYLESS-GO start/stop
button, the vehicle’s on-board electronics
have status 0 (as with SmartKey removed).80
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X
Seat fore and aft adjustment: Press the
switch forward or backward in direction of
arrow A.
X Seat backrest tilt: Press the switch
forward or backward in direction of
arrow ?.
X Seat height: Press the switch up or down
in direction of arrow =.
X Seat cushion tilt: Press the switch up or
down in direction of arrow ; until your
upper legs are lightly supported.
X Head restraint height (vehicles with
memory function): Press the switch up or
down in direction of arrow :.
Head restraint height adjustment,
manual
This feature is only available in vehicles
without memory function. G
Warning!
For your protection, drive only with properly
positioned head restraints.
Adjust the head restraint so that it is as close
to the head as possible and the center of the
head restraint supports the back of the head
at eye level. This will reduce the potential for
injury to the head and neck in the event of an
accident or similar situation.
Do not drive the vehicle without the seat head
restraints. Head restraints are intended to
help reduce injuries during an accident.
With a third-row seat occupied, make sure to
move the respective head restraint up from the lowest non-use position and have the
occupant adjust the head restraint properly.
! Do not attempt to remove front seat head
restraints. They can only be removed by
qualified technicians. We recommend that
you have this work carried out by an
authorized Mercedes-Benz Center. X
Raising: Adjust the height of head
restraint : by pulling it upward.
If head restraint : is fully retracted, press
release button ; in direction of arrow and
pull head restraint : upward.
X Lowering: Press release button ; in
direction of arrow and press down on head
restraint :.
Head restraint fore and aft adjustment G
Warning!
Vehicles with Rear Seat Entertainment
Package: When adjusting the head restraint,
make sure your fingers do not become caught
between the head restraint cushion and the
monitor. Failing to do so may lead to injury. Seats
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X
While seated, pull adjustment handle : in
direction of arrow and hold it there.
X To move seat backrest back, lean lightly
against backrest.
X To move seat backrest forward, lean
forward with adjustment handle : pulled.
The seat backrest will move forward
against your back.
X Release adjustment handle : when the
seat backrest has reached the desired
position.
X To make sure the seat backrest has
engaged, lean firmly against the backrest.
Head restraint height G
Warning!
With the second-row middle seat or a third-
row seat occupied, make sure to move the
respective head restraint up from the lowest
non-use position and have the occupant
adjust the head restraint properly.
For your protection, drive only with properly
positioned head restraints.
Adjust the head restraint so that it is as close
to the head as possible and the center of the
head restraint supports the back of the head
at eye level. This will reduce the potential for
injury to the head and neck in the event of an
accident or similar situation. Outboard second-row seat head restraint X
Raising: Manually adjust the height of head
restraint : by pulling it upward to the
desired position.
X Lowering: Push release button ; and
press down on head restraint :.
i The head restraint of the second-row
middle seat and the third-row seat head
restraints are adjusted in the same
manner.
i The tilt of the second-row head restraints
is adjusted in the same manner as the front-
seat head restraints, see “Head restraint
adjustment” (Y page 83).
The tilt of the head restraint of the second-
row middle seat and the third-row seat
head restraints cannot be adjusted.
Head restraints, removing and
installing G
Warning!
Do not drive the vehicle without the seat head
restraints installed when the rear seats are
occupied. Head restraints are intended to
help reduce injuries during an accident.
With the second-row middle seat or a third-
row seat occupied, make sure to move the
respective head restraint up from the lowest
non-use position and have the occupant
adjust the head restraint properly.
For your protection, drive only with properly
positioned head restraints.
Adjust the head restraint in such a way that it
is as close to the head as possible and the
center of the head restraint supports the back
of the head at eye level. This will reduce the
potential for injury to the head and neck in the
event of an accident or similar situation.
i When removing or installing the head
restraint of an outboard second-row seat,
adjust the seat to the rear as far as possible
(Y page 87) and fold the seat backrest
(Y page 84) forward. 88
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X
Pull seat backrest release strap : in
direction of arrow.
X Completely fold seat backrest ; forward
so that it rests on seat cushion = (armrest
position). Armrest position
Multicontour seat
The multicontour seat has a movable seat
cushion and inflatable air cushions built into
the seat backrest to provide additional
lumbar and side support. X
Switch on the ignition.
X Seat cushion depth: Adjust the seat
cushion depth to the length of your upper
leg using switch :.
X Seat backrest contour: Adjust the
contour of the seat backrest to the desired
position using W or X.
X Move the seat backrest support cushion to
the bottom with button ? or to the center
with button =.
X Seat backrest side bolsters: Adjust the
side bolsters so that they provide good
lateral support using switch ;. Seat ventilation
The blue indicator lamps
; in seat ventilation
switch : come on to show which ventilation
level you have selected.
i The seat ventilation for the driver’s seat
can be activated using the summer opening
feature ( Y page 108).
X Switch on the ignition.
X Switching on: Press respective seat
ventilation switch :.
Three blue indicator lamps ; in seat
ventilation switch : come on.
X Switching off: Press seat ventilation
switch : repeatedly until all indicator
lamps ; go out.
If there is insufficient voltage the seat
ventilating switches off automatically. 90
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Seat heating
Front seat heating switches
The switches for the outboard second-row
seat heating are located in the rear center
console.
Rear seat heating switches
The red indicator lamps
; in front or rear
seat heating switch : come on to show
which heating level you have selected.
The seat heating switches from level 3 (high)
to level 2 after approximately 5 minutes.
The seat heating switches from level 2 to level
1 (low) after approximately 10 minutes.
After approximately 20 minutes in level 1, the
seat heating switches off automatically.
X Switch on the ignition.
X Switching on: Press respective seat
heating switch :.
Three red indicator lamps ; in the
respective seat heating switch : come on.X
Continue pressing respective seat heating
switch : until desired seat heating level is
reached.
X Switching off: Press respective seat
heating switch : repeatedly until all
indicator lamps ; go out.
If one or more of indicator lamps ; in
respective seat heating switch : are
flashing, there is insufficient voltage available
since too many electrical consumers are
turned on. The seat heating switches off
automatically.
The seat heating will switch back on again
automatically as soon as sufficient voltage is
available. Multifunction steering wheel
Safety notes
G
Warning!
Do not adjust the steering wheel while driving.
Adjusting the steering wheel while driving, or
driving without the steering wheel adjustment
feature locked could cause the driver to lose
control of the vehicle.
The electrical steering wheel adjustment
feature can be operated at any time.
Therefore, do not leave children unattended
in the vehicle, or with access to an unlocked
vehicle. A child’s unsupervised access to a
vehicle could result in an accident and/or
serious personal injury.
Make sure
R you can reach the steering wheel with your
arms slightly bent at the elbows
R you can move your legs freely
R all displays (including malfunction and
indicator lamps) on the instrument cluster
are clearly visible Multifunction steering wheel
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i
When the current position for the steering
wheel is in the uppermost tilt position, the
steering wheel will no longer be able to
move upward when the easy-entry/exit
feature is activated.
The adjustment procedure is briefly
interrupted when the engine is started. G
Warning!
Let the system complete the adjustment
procedure before setting the vehicle in
motion. All steering wheel adjustment must
be completed before setting the vehicle in
motion. Driving off with the steering wheel
still adjusting could cause the driver to lose
control of the vehicle.
Crash-responsive exit aid When you open the driver’s door after an
accident has occurred, the steering column
moves up. The position of the SmartKey in the
starter switch is insignificant. This function
facilitates exiting as well as rescue of vehicle
occupants.
The crash-responsive exit aid can only be
triggered when the easy-entry/exit feature is
activated via the control system.
Heated steering wheel
The steering wheel heating warms up the
leather area of the steering wheel. X
Switch on the ignition.
X Switching on: Turn switch at the tip of the
stalk in direction of arrow :.
Indicator lamp = comes on.
i The steering wheel heating may be
suspended temporarily. However, indicator
lamp = remains on. The steering wheel
heating is suspended when the
temperature of the vehicle interior is above
86‡ (30†). It is also suspended when the
temperature of the steering wheel is above
95‡ (35†).
When these conditions do not apply
anymore, steering wheel heating
continues.
X Switching off: Turn switch at the tip of
stalk in direction of arrow ;.
Indicator lamp = goes out.
i Indicator lamp = flashes or goes out in
case of power surge or undervoltage or if
the steering wheel heating malfunctions.
i The steering wheel heating switches off
automatically when you remove the
SmartKey from the starter switch or, on
vehicles with KEYLESS-GO, when you
switch off the ignition and open the driver’s
door.
For more information on the steering wheel,
see “Multifunction steering wheel”
(Y page 123). Mirrors
Notes
Adjust the interior and exterior rear view
mirrors before driving so that you have a good
view of the road and traffic conditions. Mirrors
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Interior rear view mirror
X Adjust the interior rear view mirror
manually.
Interior rear view mirror, antiglare
position X
Tilt the mirror to the antiglare position by
moving lever : towards the windshield.
The interior rear view mirror is dimmed. Exterior rear view mirrors
G
Warning!
Exercise care when using the passenger-side
exterior rear view mirror. The mirror surface
is convex (outwardly curved surface for a
wider field of view). Objects in mirror are
closer than they appear. Check your interior
rear view mirror and glance over your
shoulder before changing lanes. X
Switch on the ignition.
X Press button : for the driver’s side
exterior rear view mirror or button = for
the passenger-side exterior rear view
mirror.
The indicator lamp in the respective button
comes on for approximately 15 seconds.
If you do not make adjustments to the
selected exterior rear view mirror within
15 seconds, the indicator lamp goes out.
You will then have to select the desired
exterior rear view mirror again before
adjustments can be made. Adjustments
can only be made with the indicator lamp
for the respective exterior rear view mirror
button illuminated.
X Press adjustment button ; up, down, left
or right according to the desired setting.
! If an exterior rear view mirror was forcibly
hit from the front, manually snap it back
into place.
! Vehicle with power folding exterior rear
view mirrors:
If an exterior rear view mirror housing is
forcibly pushed forward (hit from the rear)
or forcibly pushed rearward (hit from front),
press fold button to fold mirrors in, then
press fold button again to fold mirrors out.
Do not force mirrors by hand as this may
damage the adjustment mechanism.
The mirror housing is then properly
positioned and you can adjust the mirror in
the usual manner.
i At low ambient temperatures, the exterior
rear view mirrors will be heated
automatically. Auto-dimming rear view mirrors
The exterior rear view mirror on the driver’s
side and the interior rear view mirror will
respond automatically to glare when the
ignition is switched on and incoming light 94
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5 T
Parking lamps (also tail lamps,
license plate lamps, side marker
lamps and instrument panel lamps)
6 L Low-beam headlamps or high-beam
headlamps
7 N Front fog lamps
8 R Rear fog lamp
i The exterior lamps (except standing
lamps or parking lamps) go out
automatically when you remove the
SmartKey from the starter switch or open
the
driver’s door with the ignition switched
off.
When the parking lamps or the rear fog
lamp are switched on and you remove the
SmartKey from the starter switch and open
the driver’s door, an acoustic signal
sounds.
In addition the message Switch Off
Lights appears in the multifunction
display.
Switch off the parking lamps or the rear fog
lamp manually.
! Failure to switch off the parking lamps
when leaving the vehicle may result in a
discharged battery.
Low-beam headlamps The low-beam headlamps can be switched on
and off with the exterior lamp switch.
X
Switch on the ignition.
X Switching on: Turn the exterior lamp
switch to position L.
The following lamps come on:
R Low-beam headlamps
R Tail lamps
R Parking lamps
R License plate lamps
R Side marker lamps R
Instrument panel lamps
R Green indicator lamp L in the
instrument cluster
X Switching off: Turn the exterior lamp
switch to position $.
Automatic headlamp mode The following lamps come on and go out
automatically
depending on the brightness of
the ambient light:
R Low-beam headlamps
R Tail lamps
R Parking lamps
R License plate lamps
R Side marker lamps G
Warning!
If the exterior lamp switch is set to Ã, the
headlamps will not automatically come on
under foggy conditions.
To

minimize risk to you and to others, activate
headlamps by turning exterior lamp switch to
L when driving or when traffic and/or
ambient lighting conditions require you to do
so.
In low ambient lighting conditions, only switch
from position à to L with the vehicle
at a standstill in a safe location. Switching
from à to L will briefly switch off the
headlamps. Doing so while driving in low
ambient lighting conditions may result in an
accident.
The automatic headlamp feature is only an aid
to the driver. The driver is responsible for the
operation of the vehicle’s lights at all times.
X Switching on: Turn the exterior lamp
switch to position Ã. 98
Lighting
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The following lamps come on and go out
depending on the brightness of the ambient
light with the SmartKey in starter switch
position 1 or the KEYLESS-GO start/stop
button pressed once:
R
tail lamps
R parking lamps
R license plate lamps
R side marker lamps
When the engine is running, the low-beam
headlamps will also come on and turn off
automatically.
Canada
only: High-beam headlamps are only
available with the exterior lamp switch in
position L.
Daytime running lamp mode In Canada, the daytime running lamp mode is
mandatory

and therefore in a constant mode.
In the USA, the daytime running lamp mode
is deactivated by default.
X Activate the daytime running lamp mode
using the control system, see “Switching
daytime

running lamp mode on or off (USA
only)” (Y page 134).
X Turn the exterior lamp switch to position
$ or Ã.
When the engine is running, the low-beam
headlamps come on.
In low ambient lighting conditions, the
following lamps will come on additionally:
R
Tail lamps
R Parking lamps
R License plate lamps
R Side marker lamps
With the daytime running lamp mode
activated
and the engine running, you cannot
switch off the low-beam headlamps manually. Canada only
With the exterior lamp switch in position
$

or Ã, you cannot switch on the high-
beam headlamps.
The high-beam flasher is available at all times.
X For nighttime driving turn the exterior lamp
switch

to position L to permit activation
of the high-beam headlamps.
When the engine is running, and you
R shift from a driving position to neutral
position N or park position P with the
vehicle at a standstill, the low-beam
headlamps will go out with a delay of
3 minutes
R turn the exterior lamp switch to position
T, the low-beam headlamps, the tail
and

parking lamps, the license plate lamps
and the side marker lamps come on
R turn the exterior lamp switch to position
L, the manual headlamp mode has
priority over the daytime running lamp
mode
The corresponding exterior lamps come on
(Y page 97).
USA only
You can only switch on the high-beam
headlamps in low ambient lighting conditions.
The high-beam flasher is available at all times.
X For nighttime driving turn the exterior lamp
switch to position L or à to permit
activation of the high-beam headlamps.
When the engine is running, and you turn the
exterior lamp switch to position T or
L, the manual headlamp mode has
priority

over the daytime running lamp mode.
The corresponding exterior lamps come on
(Y page 97).
Fog lamps Fog lamps cannot be switched on with the
exterior lamp switch in position Ã. Lighting
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G
Warning!
In low ambient lighting or foggy conditions,
only switch from position à to L with
the vehicle at a standstill in a safe location.
Switching from à to L will briefly
switch off the headlamps. Doing so while
driving in low ambient lighting conditions may
result in an accident.
Fog lamps will operate with the parking lamps
and/or the low-beam headlamps on. Fog
lamps should only be used in conjunction with
low-beam headlamps. Consult your State or
Province Motor Vehicle Regulations
regarding permissible lamp operation.
X Switch on the ignition.
X Turn the exterior lamp switch to position
T or L (Y page 97).
X Switching on front fog lamps: Pull out the
exterior lamp switch to first stop.
The green indicator lamp N in the
exterior lamp switch comes on.
X Switching on rear fog lamp: Pull out the
exterior lamp switch to second stop.
The rear fog lamp, the front fog lamps, the
green and the yellow indicator lamp R
in the exterior lamp switch come on.
X Switching off front fog lamps/rear fog
lamp: Push in the exterior lamp switch to
its stop.
Locator lighting and night security
illumination Locator lighting and night security
illumination are described in the “Control
system” section, see “Switching locator
lighting on or off” (Y page 135) and
“Switching night security illumination
(Headlamps delayed shut-off feature) on or
off” (Y page 135). Combination switch
Turn signals
X
Press the combination switch in direction
of arrow ; or ?.
The corresponding turn signal indicator
lamp ! or # in the instrument
cluster flashes.
The combination switch resets automatically
after major steering wheel movements.
i To signal minor directional changes such
as changing lanes, press the combination
switch only to point of resistance and
release. The corresponding turn signal
lamps will flash three times.
High beam X
Turn the exterior lamp switch to position
L (Y page 97).
X Switching on: Push the combination
switch in direction of arrow :.
The high-beam headlamp indicator lamp
K in the instrument cluster comes on.
X Switching off: Pull the combination switch
in direction of arrow = to its original
position.
i Also note the information on high-beam
headlamps with activated automatic
headlamp mode (Y page 98) or the daytime
running lamp mode ( Y page 99).100
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