2010 MERCEDES-BENZ R320 key battery

Vehicle equipment ............................
270
Where will I find ...? .......................... 270
Vehicle status messages in the
multifunction display ....................... 274
What to do if … .................................. 299
Unlocking/locking manually ...........308
Resetting activated NECK-PRO
active front head restraints .............310
Replacing SmartKey batteries ......... 310
Replacing bulbs ................................. 312
Replacing wiper blades ....................317
Flat tire .............................................. 319
Bleeding the fuel system (diesel
engine only) ....................................... 331
AdBlue ®
(diesel engine only) ...........331
Battery ............................................... 333
Jump starting .................................... 336
Towing the vehicle ............................338
Fuses .................................................. 340 269Practical hints
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Vehicle
Display messages
Possible causes/consequences and
X SolutionsDepress
brake to
shift out
of P. You have attempted to shift the automatic transmission into
drive
position D, reverse gear R or neutral position N without
depressing the brake pedal.
X Depress the brake pedal. Door Open Vehicle
Not In
Park You have opened the driver’s door and the automatic
transmission is still in drive position
D, reverse gear R or
neutral position N.
X Before you leave the vehicle, make sure the automatic
transmission is in park position P and the parking brake is
engaged. Drive to
workshop
without
shifting
gears. The automatic transmission cannot be shifted out of the
current transmission position because of a malfunction.
If the automatic transmission is in drive position D:
X
Without shifting the automatic transmission out of drive
position D, drive to an authorized Mercedes-Benz Center.
If the automatic transmission is set to position neutral
position N, reverse gear R or park position P:
X Do not drive.
X Contact an authorized Mercedes-Benz Center or call
Roadside Assistance. Only
shift to
P when
vehicle
is at a
standstill
. You have attempted to shift the automatic transmission into
park position P although the vehicle was still in motion.
X
Stop the vehicle. Shift to
P or N to
start
engine. You have attempted to start the engine with the KEYLESS-GO
start/stop button while the automatic transmission was in
reverse gear
R or drive position D.
X Shift the automatic transmission into park position P or
neutral
position N. Make sure the brake pedal is depressed. Auxiliary
Battery Malfunctio
n The backup battery for the automatic transmission is no
longer charging.
X
Contact an authorized Mercedes-Benz Center. 282
Vehicle status messages in the multifunction display
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SmartKey with KEYLESS-GO
X
Move locking tab : in the direction of
arrow.
X Slide mechanical key ; out of the housing.
Unlocking the driver’s door X
Insert mechanical key ; into the driver’s
door lock.
X Turn mechanical key ; counterclockwise
to position 1.
X Pull the door handle past the resistance
point until the locking knob moves up.
The driver’s door is unlocked.
X Pull the door handle once more to open the
driver’s door.
X Turn mechanical key ; back and remove
it from the driver’s door lock. Locking the vehicle
If you cannot lock the vehicle with the
SmartKey or with KEYLESS-GO, lock it as
follows:
X Close the front passenger door, the right
rear door, and the tailgate.
X Open the driver’s door and the rear left
door.
X Press the central locking switch
(Y page 74).
The locking knobs of the front passenger
door and the rear doors move down.
X If the vehicle battery is disconnected or
drained: Press down the locking knobs on
the front passenger door and the rear
doors.
X Exit the vehicle.
X Close the driver’s door.
X Enter the vehicle through the rear left door.
X Press down the locking knob of the driver’s
door.
! To prevent inadvertent lockout, make
sure to have the SmartKey with you before
proceeding with the next step. The next
step will lock the vehicle.
X Exit the vehicle.
X Close the rear left door.
The vehicle is locked.
i This procedure does not arm the anti-
theft alarm system, nor does it lock the fuel
filler flap. Fuel filler flap
G
Warning!
Avoid contact with the vehicle walls as they
may contain sharp edges. Otherwise, you
could injure yourself while releasing the fuel
filler flap. Unlocking/locking manually
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have the batteries replaced at an authorized
Mercedes-Benz Center.
G
Warning!
Batteries contain poisonous and corrosive
substances. Therefore, keep the batteries out
of reach of children.
If a battery is swallowed, seek medical help
immediately. G
Warning!
SmartKey batteries contain perchlorate
material, which may require special handling
and regard for the environment. Check with
your local government’s disposal guidelines.
California residents, see www.dtsc.ca.gov/
HazardousWaste/Perchlorate/
index.cfm.
Batteries contain materials that can harm the
environment if disposed of improperly.
Recycling of batteries is the preferred method
of disposal. Many states (USA only) or
provinces (Canada only) require sellers of
batteries to accept old batteries for recycling.
When inserting the batteries, make sure they
are clean and free of lint.
When replacing batteries, always replace
both batteries.
i The required replacement batteries are
available at any authorized Mercedes-Benz
Center.
Replacement batteries: Lithium, type
CR 2025 or equivalent.
X Remove the mechanical key from the
SmartKey (Y page 308). SmartKey
X
Press mechanical key ; into the SmartKey
opening until battery compartment
cover : opens. Do not keep the cover
shut. X
Remove the battery compartment cover.
X Pat the SmartKey against the palm of your
hand until battery = falls out.
X Insert the new battery with the positive
terminal (+) facing up. Use a lint-free cloth.
X Insert the tabs of the battery compartment
cover into the housing and press the cover
closed.
X Slide mechanical key : back into the
SmartKey.
X Check the operation of the SmartKey. Replacing SmartKey batteries
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SmartKey with KEYLESS-GO
X
Insert mechanical key : into opening.
X Press mechanical key : in direction of
arrow.
Battery compartment ; is unlatched.
X Pull battery compartment ; out of the
SmartKey housing. X
Pull out batteries =.
X Insert new batteries = under contact
springs ? with the positive terminal (+)
side facing up.
X Return battery compartment ; into
SmartKey housing until it locks into place.
X Slide mechanical key : back into the
SmartKey.
X Check the operation of the SmartKey as
well as the KEYLESS-GO function. Replacing bulbs
Safety notes
Safe vehicle operation depends on proper
exterior lighting and signaling to a large
degree.
Correct headlamp adjustment is extremely
important. Have headlamps checked and
readjusted at regular intervals and when a
bulb has been replaced. Contact an
authorized Mercedes-Benz Center for
headlamp adjustment. G
Warning!
Bulbs and bulb sockets can be very hot. Allow
the lamp to cool down before changing a bulb.
Keep bulbs out of reach of children.
Halogen lamps contain pressurized gas. A
bulb can explode if you
R touch or move it when hot
R drop the bulb
R scratch the bulb
Wear eye and hand protection.
Because of high voltage in Xenon lamps, it is
dangerous to replace the bulb or repair the
lamp and its components. We recommend
that you have such work done by a qualified
technician.
i Since replacing bulbs is a technically
highly demanding process, we recommend
to have them replaced at an authorized
Mercedes-Benz Center.
i If the headlamps or front fog lamps are
fogged up on the inside as a result of high
humidity, driving the vehicle a distance with
the lights on should clear up the fogging. 312
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battery cover is non-removable. Do not
attempt to open the battery as otherwise
the battery will be damaged.
VRLA
batteries do not require topping-up of
the electrolyte level. They cannot be
opened to check the electrolyte level.
However, the battery condition must be
checked periodically by performing a
battery conductance test. Refer to
Maintenance Booklet for battery condition
testing intervals.
The factory-equipped battery may only be
replaced with a battery that
R has the same security features
R is of identical size
R is of identical voltage
R is of identical capacity
! As any other battery, the battery may
discharge if you do not operate the vehicle
for an extended period of time. Have the
battery disconnected at a qualified
workshop or an authorized Mercedes-Benz
Center in such a case. You may also
connect an accessory battery charge unit
expressly approved by Mercedes-Benz for
your vehicle model to maintain the battery
charge. Contact an authorized Mercedes-
Benz Center for further information.
The battery, the battery ventilation hose
and the lateral plug must always be
securely installed when the vehicle is in
operation.
! Never loosen or detach battery terminal
clamps while the engine is running or the
SmartKey is in the starter switch or
KEYLESS-GO button is in position 1.
Otherwise the alternator and other
electronic components could be severely
damaged.
Have the battery checked regularly at an
authorized Mercedes-Benz Center.
Refer to Maintenance Booklet for
maintenance intervals or contact an authorized Mercedes-Benz Center for
further information.
i After battery power was interrupted, do
the following:
R Set the clock
(Y page 133).
Vehicles with COMAND system with
navigation module: Time and date are set
automatically.
R Synchronize the door windows
(Y page 107).
R Synchronize the power tilt/sliding
sunroof (Y page 183).
R Synchronize the power tilt/sliding panel
(Y page 186).
R Synchronize the exterior rear view
mirrors (Y page 96). Charging the battery
G
Warning!
Never charge a battery while still installed in
the vehicle unless the accessory battery
charge unit approved by Mercedes-Benz is
being used. Gases may escape during
charging and could cause an explosion that
may

result in personal injury, paint damage or
corrosion.
An accessory battery charge unit specially
adapted for Mercedes-Benz vehicles and
tested and approved by Mercedes-Benz is
available. It permits the charging of the
battery in its installed position. Contact an
authorized Mercedes-Benz Center for
information and availability.
Charge battery in accordance with the
separate instructions for the accessory
battery charger.
Have the battery charged at an authorized
Mercedes-Benz Center. If you charge the
battery yourself, follow the operating
instructions for your charging device. Battery
335
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X
Slide cover A back onto negative terminal
B.
X Have the battery checked at the nearest
authorized Mercedes-Benz Center. Towing the vehicle
Safety notes
Mercedes-Benz
recommends that the vehicle
be transported with all wheels off the ground
using flatbed or appropriate wheel lift/dolly
equipment. This method is preferable to other
types of towing.
! To prevent damage during transport, do
not tie down vehicle by its chassis or
suspension parts.
If circumstances do not permit the
recommended towing methods, the vehicle
may be towed with all wheels on the ground
only so far as necessary to have the vehicle
moved to a safe location where the
recommended towing methods can be
employed.
! Before towing the vehicle observe the
following instructions:
R Do not tow-start the vehicle. You could
otherwise seriously damage the
automatic transmission which is not
covered by the Mercedes-Benz Limited
Warranty.
R Do not tow with sling-type equipment.
Towing with sling-type equipment over
bumpy roads will damage radiator and
supports.
R Towing of the vehicle should only be
done using the properly installed towing
eye bolt. Never attach a tow cable, tow
rope or tow rod to the vehicle chassis,
frame or suspension parts.
! Do not tow with one axle raised. Doing so
could damage the transfer case, which is
not covered by the Mercedes-Benz Limited Warranty. All wheels must be on or off the
ground.

Observe instructions for towing the
vehicle with all wheels on the ground. G
Warning!
With the engine not running, there is no power
assistance for the brake and steering
systems. In this case, it is important to keep
in mind that a considerably higher degree of
effort is necessary to brake and steer the
vehicle. Adapt your driving accordingly.
! Avoid pulling the vehicle abruptly or
diagonally, since it could result in damage
to the chassis alignment.
! Do not use the towing eye bolt for
recovery,

as this could damage the vehicle.
If in doubt, recover the vehicle with a crane.
i If the battery is disconnected or
discharged
R the SmartKey will not turn in the starter
switch
R the automatic transmission will remain in
park position P
For more information see “Battery”
(Y page 333) or “Jump starting”
(Y page 336). Installing towing eye bolt
Depending on whether you are towing a
vehicle

or you are being towed, the towing eye
bolt can be screwed into threaded holes
which are located behind covers on each
bumper.
The towing eye bolt is supplied with the
vehicle tool kit, located in the cargo
compartment underneath the cargo
compartment floor (Y page 270).
X Take the towing eye bolt out of the space
underneath the cargo compartment floor. 338
Towing the vehicle
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