2007 MERCEDES-BENZ R320CDI battery

119 Controls in detail
Locking and unlocking
Factory setting
Global unlocking
Grasp an outside door handle.
All turn signal lamps flash once. The
locking knobs in the doors move up.
The anti-theft alarm system is dis-
armed.
The vehicle will lock again automatically
and reactivate the anti-theft alarm system
within approximately 40 seconds of
unlocking if

neither door nor tailgate is opened

the central locking switch is not
activatedGlobal locking
Press the lock button on an outside
door handle (
page 69).
With the tailgate and all doors closed,
the turn signal lamps flash three times.
The locking knobs on the doors move
down. The anti-theft alarm system is
armed.Selective setting
If you frequently travel alone, you may wish
to reprogram the SmartKey with
KEYLESS-GO so when you grasp the driv-
er’s door handle only the driver’s door and
the fuel filler flap unlocks.
Press and hold buttonsŒ and‹
simultaneously for about 5 seconds
until battery check lamp5
(
page 116) flashes twice.
The SmartKey with KEYLESS-GO will
then function as follows:
Unlocking driver’s door and fuel filler
flap
Grasp the driver’s outside door handle.
All turn signal lamps flash once. The
locking knob in the driver’s door moves
up. The anti-theft alarm system is dis-
armed.
iIf the vehicle has been parked for more than
72 hours, you must pull an outside door handle
in order to activate the KEYLESS-GO function.
iThe vehicle could be inadvertently unlocked
if the SmartKey with KEYLESS-GO 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

120 Controls in detail
Locking and unlocking
Global unlocking
Grasp any outside door handle other
than the driver’s outside door handle.
All turn signal lamps flash once. The
locking knobs in the doors move up.
The anti-theft alarm system is dis-
armed.
Global locking
Press the lock button on an outside
door handle (
page 69).
All turn signal lamps flash three times.
The locking knobs in the doors move
down. The anti-theft alarm system is
armed.Restoring to factory setting
Press and hold buttonsŒ and‹
simultaneously for about 5 seconds
until battery check lamp5
(
page 116) flashes twice.Checking the batteries
Press button‹orŒ.
Battery check lamp5 (
page 116)
comes on briefly to indicate that the
SmartKey with KEYLESS-GO batteries
are in order.
!If you can no longer lock or unlock the
vehicle with the SmartKey with KEYLESS-GO, the
batteries in the SmartKey with KEYLESS-GO are
discharged, the SmartKey with KEYLESS-GO is
malfunctioning, or the vehicle battery is drained.

Check the batteries in the SmartKey with
KEYLESS-GO (
page 120) and replace
them if necessary (
page 483).

Use the mechanical key to unlock the
drivers’ door (
page 478).

Lock the vehicle as described in the
“Practical hints” section (
page 479).

Have the vehicle battery and the vehicle bat-
tery connections checked (
page 506).
If the SmartKey with KEYLESS-GO is malfunc-
tioning, contact Roadside Assistance or an
authorized Mercedes-Benz Light Truck Center.
iIf battery check lamp5 (page 116) does
not come on briefly during check, the SmartKey
with KEYLESS-GO batteries are discharged.
Replace the batteries (
page 483).
You can obtain the required batteries at any
authorized Mercedes-Benz Light Truck Center.
iIf the batteries are checked within signal
range of the vehicle, pressing the
button‹orŒ will lock or unlock the
vehicle accordingly.

153 Controls in detail
Lighting
Switching on hazard warning flasher
Press hazard warning flasher
switch1.
All turn signals are flashing.
Switching off hazard warning flasher
Press hazard warning flasher switch1
again.
Interior lighting
1Front left reading lamp, on/off
2Rear interior lighting, on/off
3Automatic interior lighting
4Front interior lighting, on/off
5Front right reading lamp, on/off
6Front right interior lamp
7Reading lamps
8Front left interior lampThe controls are located in the overhead
control panel.
Deactivating automatic control
Press switch3.
The interior lighting and the locator
lighting (
page 184) remain switched
off even when you

unlock the vehicle

remove the SmartKey from the
starter switch

open a door

open the tailgate
iWith the hazard warning flasher activated
and the combination switch set for either left or
right turn, only the respective left or right turn
signals will operate when the ignition is
switched on.
iIf the hazard warning flasher has been
activated automatically, press hazard warning
flasher switch1 once to switch it off.
!An interior lamp switched on manually does
not go out automatically.
Leaving an interior lamp switch in the ON
position for extended periods of time with the
engine turned off could result in a discharged
battery.
iThe interior lighting is factory-set to
automatic mode.

214 Controls in detail
Good visibility
Power folding exterior rear view
mirrors*
Folding the exterior rear view mirrors
in and out automatically
When the corresponding function in the
control system is activated (
page 190):

The exterior rear view mirrors automat-
ically fold in as soon as the vehicle is
locked from the outside.

The exterior rear view mirrors automat-
ically fold out as soon as the vehicle is
unlocked and the driver’s or front pas-
senger door are subsequently opened.Synchronizing exterior rear view
mirrors
The power folding rear view mirrors may
have to be synchronized after the vehicle
battery has been disconnected or dis-
charged. If the exterior rear view mirrors
do not fold properly upon locking or un-
locking the vehicle although the corre-
sponding function in the control system is
activated (
page 190), do the following:
Fold each exterior rear view mirror in
completely (
page 215).
Fold each exterior rear view mirror out
completely (
page 215).
When the exterior rear view mirrors fold
properly upon locking the vehicle, the exte-
rior mirrors are synchronized. Otherwise
repeat the above steps.Folding the exterior rear view mirrors
in and out manually
The button is located on the door control
panel.
1Button for folding exterior rear view
mirrors in and out
Switch on the ignition (page 39).
!Before you drive the vehicle through an au-
tomatic car wash, fold the exterior rear view mir-
rors in. Otherwise they may get damaged.iThe exterior rear view mirrors can vibrate if
they are not folded out completely.

217 Controls in detail
Good visibility
Rear window defroster
The rear window defroster uses a large
amount of power. To keep battery drain to
a minimum, switch off the defroster as
soon as the rear window is clear. The de-
froster is automatically deactivated after
approximately 6 to 17 minutes of
operation depending on the outside tem-
perature.
Switch on the ignition (page 39).Activating
Press button1 on the climate con-
trol panel (
page 220) or the automat-
ic climate control* panel (
page 234).
The indicator lamp on the button
comes on.
Deactivating
Press button1 once more.
The indicator lamp on the button goes
out.
!With the sunshade raised and the respective
door window open, the sunshade could disen-
gage and snap back when driving at high vehicle
speeds, e.g. on highways, and damage the
retractor. You should therefore always either
close the door window or lower the sunshade
when driving at high speed.
Warning!G
Any accumulation of snow and ice should be
removed from the rear window before driv-
ing. Visibility could otherwise be impaired,
endangering you and others.!If the rear window defroster switches off too
soon and the indicator lamp starts flashing, too
many electrical consumers are operating simul-
taneously and there is insufficient voltage in the
battery. The system responds automatically by
switching the rear window defroster off.
As soon as the battery has sufficient voltage, the
rear window defroster switches back on auto-
matically.

229 Controls in detail
Climate control
Residual heat and ventilation
With the engine switched off, it is possible
to continue to heat or ventilate the interior
for up to 30 minutes. This feature makes
use of the residual heat produced by the
engine.Activating
Switch off the ignition (page 39).
Press button9 (page 220).
The indicator lamp on the button
comes on.
Deactivating
Press button9 (page 220) again.
The indicator lamp on the button goes
out.
Rear climate control*
The control panel for the rear climate
control is only available if your vehicle is
equipped with seat heating for the
second-row seats*.
The control panel is located on the rear of
the front center console.
iHow long the system will provide heating
depends on

the coolant temperature

the battery voltage
Regardless of the temperature and air volume
set on the climate control panel, an interior tem-
perature is aimed at by 72°F (22°C) and the
blower runs on low speed to protect the vehicle
battery.
iThe residual heat is automatically turned off:

when the ignition is switched on

after about 30 minutes

if the coolant temperature is too low

if the battery voltage drops

244 Controls in detail
3-zone automatic climate control*
Using driver-side settings for all
temperature zones
You can use the settings of the driver’s
side, such as temperature, air volume and
air distribution, for all temperature zones.
These settings only need to be made once
and the automatic climate control system
will automatically regulate the settings for
all temperature zones quickly and comfort-
ably.
Activating
Adjust the temperature, air volume and
air distribution (
page 234).
Press button; (page 234).
The indicator lamp on the button
comes on.
The driver-side settings are used for all
temperature zones.Deactivating
Press button; (page 234) again.
The indicator lamp on the button goes
out.
Residual heat and ventilation
With the engine switched off, it is possible
to continue to heat or ventilate the interior
for up to 30 minutes. This feature makes
use of the residual heat produced by the
engine.
iIf you manually set the temperature, air
volume or air distribution for the passenger side
or the rear passenger compartment when the
MONO setting is active, the MONO setting will
be switched off.
iHow long the system will provide heating
depends on

the coolant temperature

the battery voltage
Regardless of the temperature and air volume
set on the automatic climate control panel, an
interior temperature is aimed at by 72°F (22°C)
and the blower runs on low speed to protect the
vehicle battery.

245 Controls in detail
3-zone automatic climate control*
Activating
Switch off the ignition (page 39).
Press button9 (page 234).
The indicator lamp on the button
comes on.
Deactivating
Press button9.
The indicator lamp on the button goes
out.Rear automatic climate control
(second row)
The control panel is located at the rear of
the front center console.
Rear automatic climate control panel
iThe residual heat is automatically turned off:

when the ignition is switched on

after about 30 minutes

if the coolant temperature is too low

if the battery voltage drops
1Increasing air volume
2Air distribution and air volume
(automatic, manual)
3Air distribution (directs air through
the side air vents
4Right rear center air vent, adjustable
5Air distribution (directs air through
the footwells and side air vents)
6Rear automatic climate control
on/off
7Decreasing air volume
8Left rear center air vent, adjustable
9Indicator lamps for air volume
settings
aTemperature control