2010 MERCEDES-BENZ R320 key battery

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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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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i
If a door remains open, the interior lamps
go out automatically after approximately
5 minutes when the SmartKey is removed
or in starter switch position 0.
X Deactivating: Press button ~.
Button ~ engages.
Manual control !
An interior lamp switched on manually
does not go out automatically.
Leaving an interior lamp switched on for an
extended period of time with the engine
turned off could result in a discharged
battery.
X Switching front interior lighting on/
off: Press switch c.
X Switching rear interior lighting on/off:
Press switch v.
X Switching front reading lamps on/off:
Press respective switch p.
Emergency lighting The interior lighting comes on automatically
if the vehicle is involved in an accident.
Switching off:
X
Press button ~.
or
X Press hazard warning flasher switch
(Y page 101).
or
X Unlock the vehicle with the SmartKey. Interior lighting in the rear
! An interior lamp switched on manually
does not go out automatically.
Leaving an interior lamp switched on for an
extended period of time with the engine
turned off could result in a discharged
battery. Second-row reading lamps
X
Switching rear reading lamps on/off:
Press second-row reading lamp : where
indicated by the arrow.
Third-row reading lamps and interior
lighting :
p Right third-row reading lamp on/off
; p Left third-row reading lamp on/off
= Left third-row reading lamp
? Rear interior lighting
A Right third-row reading lamp
i The rear interior lighting is switched on
and off using the button on the front
overhead control panel ( Y page 102). Wipers
Notes
! Do not operate the wipers when the
windshield/rear window is dry. Dust that Wipers
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With SmartKey
X
Do not depress the accelerator pedal.
X Gasoline engine: Turn the SmartKey in the
starter switch to position 3 (Y page 79) and
release it.
The engine starts automatically.
X Diesel engine: Turn the SmartKey in the
starter switch to position 2 (Y page 79).
Preglow indicator lamp % in the
instrument cluster comes on.
X As soon as preglow indicator lamp %
goes out, turn the SmartKey in the starter
switch to position 3 and release it.
The engine starts automatically.
i If the engine is at operating temperature,
preglow indicator lamp % may not stay
on and you can start the engine without
preglowing.
With KEYLESS-GO G
Warning!
As long as the SmartKey is in your vehicle, the
vehicle can be started. Therefore, never leave
children unattended in the vehicle, as they
could otherwise accidentally start the engine.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. 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.
You can start your vehicle without the
SmartKey in the starter switch using the
KEYLESS-GO start/stop button.
The SmartKey must be located in the vehicle. KEYLESS-GO start/stop button
:
USA only
; Canada only
X Make sure the KEYLESS-GO start/stop
button is inserted in the starter switch
(Y page 80).
i To start the engine with the SmartKey
instead of the KEYLESS-GO function,
remove the KEYLESS-GO start/stop button
from the starter switch. Proceed as
described in “With SmartKey”
(Y page 111).
X Depress the brake pedal during the starting
procedure.
X Do not depress the accelerator pedal.
X Gasoline engine: Press the KEYLESS-GO
start/stop button once.
The engine starts automatically.
X Diesel engine: Press the KEYLESS-GO
start/stop button once.
The engine preglows and starts
automatically.
i If the engine is at operating temperature,
the time the engine needs to preglow is
reduced.
Starting difficulties !
Remember that extended starting
attempts can drain the battery. Driving and parking
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The engine does not start. You can hear
the starter.
There could be a malfunction in the engine
electronics or in the fuel supply system.
Carry out the following steps:
X
If you are starting the engine with the
SmartKey:
Turn the SmartKey in the starter
switch to position 0 and repeat the starting
procedure.
X If you are starting the engine with KEYLESS-
GO: Close any doors that may be open to
allow

for better detection of the SmartKey.
or
X Remove the KEYLESS-GO start/stop
button from the starter switch.
X Start the engine with the SmartKey as radio
signals from another source may be
interfering with the KEYLESS-GO function.
X Repeat the starting procedure.
If the engine does not start after several
starting attempts:
X Contact an authorized Mercedes-Benz
Center or call Roadside Assistance.
The engine does not start. You cannot
hear the starter.
The battery may not be charged sufficiently.
X Get a jump start (Y page 336).
If the engine will not start despite a jump
start:
X Contact an authorized Mercedes-Benz
Center or call Roadside Assistance.
The starter has been exposed to excessive
temperatures.
X Let the starter cool for about 2 minutes.
X Repeat the starting procedure.
If the engine does not start after several
starting attempts:
X Contact an authorized Mercedes-Benz
Center or call Roadside Assistance. Driving off
G
Warning!
On slippery road surfaces, never downshift in
order to obtain braking action. This could
result

in drive wheel slip and reduced vehicle
control. Your vehicle’s ABS will not prevent
this type of loss of control.
! Do not run a cold engine at high engine
speeds. Running a cold engine at high
engine speeds may shorten the service life
of the engine. This is not covered by the
Mercedes-Benz Limited Warranty.
! If an acoustic warning sounds and the
message Release Parking Brake
appears in the multifunction display when
driving off, you have forgotten to release
the parking brake.
Release the parking brake.
! Avoid spinning of a drive wheel. This may
cause serious damage to the drivetrain
which is not covered by the Mercedes-Benz
Limited Warranty.
! Simultaneously depressing the
accelerator pedal and applying the brakes
reduces engine performance and causes
premature brake and drivetrain wear which
is not covered by the Mercedes-Benz
Limited Warranty.
i Once the vehicle is in motion, the
automatic central locking function engages
and the locking knobs in the doors move
down.
The automatic central locking function can
be switched off( Y page 137).
Automatic transmission G
Warning!
It is dangerous to shift the automatic
transmission
out of park position P or neutral
position N if the engine speed is higher than 112
Driving and parking
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X
Switch on the ignition.
X Switching on: Press button ª on the
respective climate control panel.
The
indicator lamp in the button comes on.
X Switching off: Press button ª again.
The rear window defroster switches off when
the battery voltage is too low. The indicator
lamp in button ª flashes. Too many
electrical consumers may be operating
simultaneously.
X Switch off consumers that are currently not
needed if required. Power tilt/sliding sunroof
Opening and closing
G
Observe Safety notes, see page 55. G
Warning!
When opening or closing the tilt/sliding
sunroof, make sure there is no danger of
anyone

being harmed by the opening/closing
procedure.
The tilt/sliding sunroof is equipped with the
express operation and automatic reversal
function. If the movement of the tilt/sliding
sunroof is blocked during the closing
procedure, the tilt/sliding sunroof will stop
and open slightly.
The tilt/sliding sunroof operates differently
when the sunroof switch is pressed and held.
See the “Closing when the tilt/sliding sunroof
is blocked” section for details.
The opening/closing procedure of the tilt/
sliding sunroof can be immediately halted by
releasing the sunroof switch or, if the sunroof
switch was moved past the resistance point
and released, by moving the sunroof switch in
any direction. G
Warning!
The tilt/sliding sunroof is made out of glass.
In the event of an accident, the glass may shatter. This may result in an opening in the
roof.
In a vehicle rollover, occupants not wearing
their seat belts or not wearing them properly
may be thrown out of the opening. Such an
opening

also presents a potential for injury for
occupants wearing their seat belts properly as
entire body parts or portions of them may
protrude from the passenger compartment.
! To avoid damaging the seals, do not
transport any objects with sharp edges
which can stick out of the tilt/sliding
sunroof.
Do not open the tilt/sliding sunroof if there
is snow or ice on the roof, as this could
result in malfunctions.
If you cannot open or close the tilt/sliding
sunroof due to a malfunction contact
Roadside Assistance or an authorized
Mercedes-Benz Center.
! Please keep in mind that weather
conditions can sometimes change rapidly.
Make sure to close the tilt/sliding sunroof
when leaving the vehicle. If water enters
the vehicle interior, vehicle electronics
could be damaged which is not covered by
the Mercedes-Benz Limited Warranty.
i You can also open or close the tilt/sliding
sunroof using the SmartKey or the
KEYLESS-GO function, see “Summer
opening feature” ( Y page 108) and
“Convenience closing feature”
(Y page 108).
i After switching off the ignition or
removing the SmartKey from the starter
switch, you can operate the tilt/sliding
sunroof until you open the driver’s or front
passenger door. If no door was opened you
can operate the tilt/sliding sunroof for up
to 5 minutes. Power tilt/sliding sunroof
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Closing when the tilt/sliding sunroof is
blocked
G
Warning!
Make sure that nobody can become trapped
and be seriously or even fatally injured when
closing the tilt/sliding sunroof with greater
force or without automatic reversal function.
If the movement of the tilt/sliding sunroof is
blocked
during the closing procedure (e.g. by
ice or pollution), the tilt/sliding sunroof will
stop and open slightly.
X Immediately after the tilt/sliding sunroof
has stopped and opened because it was
blocked, pull and hold the sunroof switch
in

direction of arrow = until the tilt/sliding
sunroof is fully closed.
The tilt/sliding sunroof closes with greater
force.
If the tilt/sliding sunroof is blocked again and
opens slightly:
X Immediately after the tilt/sliding sunroof
was

blocked and has opened, pull and hold
the sunroof switch in direction of arrow
= until the tilt/sliding sunroof is fully
closed.
The tilt/sliding sunroof closes without
automatic reversal function. G
Warning!
Pulling and holding the sunroof switch to
close the tilt/sliding sunroof immediately
after

it had been blocked two times will cause
the tilt/sliding sunroof to close without any
reversal function for as long as you hold the
sunroof switch. Synchronizing
The
tilt/sliding sunroof must be synchronized
R after the battery has been disconnected or
discharged
R after a malfunction
R if the tilt/sliding sunroof does not open
smoothly
! If the tilt/sliding sunroof cannot be closed
or synchronized, contact an authorized
Mercedes-Benz Center or call Roadside
Assistance.
X Vehicles with SmartKey: Switch off the
ignition

and remove the SmartKey from the
starter switch.
X Vehicles with KEYLESS-GO: Switch off the
ignition and open the driver’s door. This
puts the starter switch in position 0, same
as with the SmartKey removed from the
starter switch. The driver’s door then can
be closed again.
X Remove the fuse for the tilt/sliding sunroof
from the fuse box (Y page 340).
X Reinsert the fuse in the fuse box.
X Switch on the ignition.
X Press and hold the sunroof switch in
direction

of arrow : (Y page 182) until the
tilt/sliding sunroof is fully raised at the
rear.
X Keep holding the sunroof switch in
direction of arrow : for approximately
1 second.
X Check the express operation feature
(Y page 182).
If

the tilt/sliding sunroof opens and closes
completely, the roof is synchronized.
Otherwise repeat the above steps. Power tilt/sliding sunroof
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If the tilt/sliding panel is blocked again and
opens slightly:
X
Immediately after the tilt/sliding panel was
blocked and has opened, pull and hold the
roof panel switch in direction of arrow =
until the tilt/sliding panel is fully closed.
The tilt sliding panel closes without
automatic reversal function. G
Warning!
Pulling and holding the roof panel switch to
close the tilt/sliding panel immediately after
it had been blocked two times will cause the
tilt/sliding
panel to close without any reversal
function for as long as you hold the roof panel
switch. Synchronizing
The tilt/sliding panel and roller sunblinds
must be synchronized
R after

the battery has been disconnected or
discharged
R after a malfunction
R if the tilt/sliding panel does not open
smoothly
! Do not attempt to open the tilt/sliding
panel before the tilt/sliding panel is
properly synchronized. The tilt/sliding
panel could otherwise lock-up in the open
position.
If the tilt/sliding panel cannot be closed or
synchronized, contact an authorized
Mercedes-Benz Center or call Roadside
Assistance.
X Vehicles with SmartKey: Remove the
SmartKey from the starter switch.
X Vehicles with KEYLESS-GO: Switch off the
ignition and open the driver’s door. This
puts the starter switch in position 0, same
as with the SmartKey removed from the starter switch. The driver’s door then can
be closed again.
X Remove the respective fuse from the fuse
box (Y page 340).
X Reinsert the fuse in the fuse box.
X Switch on the ignition.
X Push and hold the roof panel switch in
direction

of arrow = (Y page 185) until the
roller sunblinds are fully extended.
X Keep holding the roof panel switch in
direction of arrow = (Y page 185) for
approximately 1 second.
X Pull and hold the roof panel switch in
direction

of arrow ; (Y page 185) until the
roller sunblinds are fully retracted.
X Keep holding the roof panel switch in
direction of arrow ; (Y page 185) for
approximately 1 second.
X Push and hold the roof panel switch in
direction

of arrow = (Y page 185) until the
tilt/sliding panel is fully closed.
X Keep holding the roof panel switch in
direction of arrow = (Y page 185) for
approximately 1 second.
X Check the express operation feature of the
tilt/sliding panel ( Y page 184).
If the tilt/sliding panel opens completely,
the

roof is synchronized. Otherwise repeat
the above steps. Loading and storing
Loading instructions
G
Warning!
Always fasten items being carried as securely
as possible. Use cargo tie-down rings and
fastening

materials appropriate for the weight
and size of the load.
In an accident, during hard braking or sudden
maneuvers, loose items will be thrown around
inside the vehicle. This can cause injury to 186
Loading and storing
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