charging MERCEDES-BENZ S-Class 2011 W221 Owner's Manual

Alertness Assistantsee ATTENTION ASSIST
Alternative route ............................... 169
Ambient light Adjusting (COMAND) .....................260
AMG menu (on-board computer) ..... 371
Anti-lock Braking System see ABS
Anti-Theft Alarm system
see ATA
Anti-theft system
ATA (Anti-Theft Alarm system) .........73
Ashtray ............................................... 430
Assistance menu (on-board
computer) .......................................... 375
ATA (Anti-Theft Alarm system) Activating/deactivating ...................73
Function ........................................... 73
Switching off the alarm ....................73
ATTENTION ASSIST ........................... 347
Activating/deactivating (on-
board computer) ............................ 376
Display message ............................ 401
Audio AUX jack .................................. 234
Audio CD/DVD or MP3 mode Switching to ................................... 218
Audio DVD
Pause function ............................... 249
Stop function ................................. 220
Audio format
Setting (audio DVD mode) .............223
Audio menu (on-board computer) .... 370
AUTO lights see Light sensor
Automatic car wash .......................... 453
Automatic engine start Using the ECO start/stop
function ......................................... 303
Automatic engine stop
Using the ECO start/stop
function ......................................... 303
Automatic transmission
DIRECT SELECT lever .....................306
Display message ............................ 409
Driving tips .................................... 309
Emergency running mode ..............313
Kickdown ....................................... 309Malfunction .................................... 313
Program selector button ................310
Pulling away ................................... 301
Starting .......................................... 301
Autostore ........................................... 210
B
Back button ....................................... 117
Bag hook ............................................ 426
Bang & Olufsen sound system ......... 135
BAS (Brake Assist System) ................. 67
BAS PLUS (Brake Assist System
Plus*) .................................................... 68
Battery Charging ........................................ 470
Checking (SmartKey) .......................80
Display message ............................ 399
Important safety guidelines
(SmartKey) ....................................... 79
Jump-starting ................................. 471
Replacing (SmartKey) ......................80
Safety notes .................................. 468
Voltage (on-board computer) .........371
Belt
see Seat belts
Bird's-eye view .................................. 181
Blind see Roller sunblind
Blind Spot Assist ............................... 352
Activating/deactivating (on-
board computer) ............................ 376
Display message ............................ 404
Bluetooth ®
Activating/deactivating .................145
Authorizing a device ......................146
Connecting devices .......................145
Devices .......................................... 146
External authorization ............147, 194
General information .......................145
Interface ........................................ 192
Revoking authorization ..................147
Settings ......................................... 145
Telephony .............................. 191, 192
Bluetooth ®
interface
Telephony ...................................... 191
Bluetooth ®
interface telephony
Conditions ..................................... 192
Index5

Vehicle equipment
iThis manual describes all the standard
and optional equipment of your vehicle
which was available at the time of
purchase. Country-specific differences are
possible. Bear in mind that your vehicle
may not feature all functions described
here. This also refers to safety-related
systems and functions.
Exterior lighting
Important safety notes
For reasons of safety, Mercedes-Benz
recommends that you drive with the lights
switched on even during the daytime. In some
countries, operation of the headlamps varies
due to legal requirements and self-imposed
obligations.
Notes on driving abroad
Convert to symmetrical low beam when
driving abroad: switch the headlamps to
symmetrical low beam in countries in which
traffic drives on the opposite side of the road
from the country where the vehicle is
registered. This prevents oncoming traffic
from being dazzled. Symmetrical lights do not
illuminate as large an area of the edge of the
road.
Have the headlamps converted at a qualified
specialist workshop, e.g. an authorized
Mercedes-Benz Center, as close to the border
as possible before driving in these countries.
Convert to asymmetrical low beam after
returning: have the headlamps converted
back to asymmetrical low beam at a qualified
specialist workshop, e.g. an authorized
Mercedes-Benz Center, as soon as possible
after crossing the border when returning.
Light switch
Operation
1WLeft-hand standing lamps2XRight-hand standing lamps3$Lights off/daytime running lamps4cAutomatic headlamp mode/daytime
running lamps
5TSide lamps, license plate and
instrument lighting
6LLow-beam/high-beam headlamps7NFog lamps148RRear fog lamps
The turn signals, high-beam headlamps and
the high-beam flasher are operated using the
combination switch (Y page 274).
! Switch off the parking lamps and standing
lamps when you leave the vehicle. This
prevents the battery from discharging.
The exterior lighting (except the side lamps/
standing lamps) switches off automatically if
you:
Rremove the key from the ignition lock
Ropen the driver's door with the key in
position 0
If you hear a warning tone when you leave the
vehicle, the lights may still be switched on.
XTurn the light switch to $ or c.
or
XIf the rear fog lamp is switched on: press
the light switch in to the stop.14Only vehicles with Bi-Xenon headlamps without Intelligent Light System* are equipped with front fog lamps.272Exterior lightingLights and windshield wipers* optional

Switch the reading lamp off=Interior lighting
Interior lighting control
Important notes
In order to prevent the vehicle's battery from
discharging, the interior lighting functions are
automatically deactivated after some time
except for when the key is in position 2 in the
ignition lock.
Automatic interior lighting control
XTo switch on/off: press the | button.
The OFF indicator lamp shows whether the
automatic interior lighting control is
deactivated (indicator lamp on) or
activated (indicator lamp off).
The interior lighting automatically switches
on if you:
R unlock the vehicle
R open a door
R remove the key from the ignition lock
The interior light is activated for a short while
when the key is removed from the ignition
lock. You can activate this delayed switch-off
using COMAND ( Y page 259).
Manual interior lighting control
XTo switch the front interior lighting on/
off: press the c button.XTo switch the rear interior lighting on/
off: press the u button.XTo switch the reading lamps on/off:
press the p button.Changing bulbs
Important safety notes
Xenon bulbs
If your vehicle is equipped with Xenon bulbs,
you can recognize this by the following: the
cone of light from the Xenon bulbs moves
from the top to the bottom and back again
when you start the engine. For this to be
observed, the lights must be switched on
before starting the engine.
GWarning
Xenon bulbs carry a high voltage. You could
get an electric shock and be seriously or even
fatally injured if you touch the electric
contacts on Xenon bulbs. Therefore, never
remove the cover from Xenon bulbs.
Do not change Xenon bulbs yourself, but have
them replaced at a qualified specialist
workshop which has the necessary specialist
knowledge and tools to carry out the work
required.
Mercedes-Benz recommends that you use an
authorized Mercedes-Benz Center for this
purpose. In particular, work relevant to safety
or on safety-related systems must be carried
out at a qualified specialist workshop.
Bulbs and lamps are an important aspect of
vehicle safety. You must therefore make sure
that these function correctly at all times.
Have the headlamp setting checked regularly.
Other bulbs
GWarning!
Bulbs and lamps can be very hot. You should
therefore allow them to cool down before you
change them. Otherwise, you could be burned
if you touch them.
Keep bulbs out of the reach of children.
Otherwise, they could damage the bulbs, for
example, and injure themselves.
278Changing bulbsLights and windshield wipers

Display messagesPossible causes/consequences and M SolutionsThe yellow F (USA only)/ ! (Canada only) warning lamp
lights up. The red F (USA only)/ ! (Canada only) indicator
lamp flashes for approximately 10 seconds after the electric
parking brake has been applied or released. It then goes out or
remains lit.
The electric parking brake is malfunctioning, e.g. because of over
or undervoltage.XPull away carefully.XVisit a qualified specialist workshop.
In the event of over or undervoltage:
XRemove the cause for the over or undervoltage, e.g. by charging
the battery or restarting the engine.XSwitch the ignition off and on, and then apply or release the
electric parking brake.
If this does not release the electric parking brake:
XDo not drive on.XConsult a qualified specialist workshop.The yellow F (USA only)/ ! (Canada only) warning lamp
lights up. The red F (USA only)/ ! (Canada only) indicator
lamp flashes for approximately 10 seconds after the electric
parking brake has been applied or released. It then goes out or
remains lit.
The electric parking brake has overheated.XAllow the vehicle to cool down. Do not apply or release the
electric parking brake during this time.XUse the folding wheel chock (Y page 464) from the vehicle tool
kit to secure the vehicle against rolling away.XWhen the vehicle has cooled down: switch the ignition off and
on again, then apply or release the electric parking brake.392Display messagesOn-board computer and displays

The battery, breather hose and cover of the
positive terminal clamp must be installed
securely during operation.
i Remove the key if you park the vehicle
and do not require any electrical
consumers. The vehicle will then use very
little energy, thus conserving battery
power.
Mercedes-Benz recommends that you do not
carry out work on batteries yourself, e.g.
removing, charging or replacing. Always have
this work performed at a qualified specialist
workshop, e.g. an authorized Mercedes-Benz
Center.
Charging the battery
GWarning
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 cause explosions that may
result in paint damage, corrosion or personal
injury.
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 the battery in accordance with the
separate instructions for the accessory
battery charger.
GWarning
There is a risk of acid burns during the
charging process due to the gases which
escape from the battery. Do not lean over the
battery during the charging process.
GWarning
Battery acid is caustic. Avoid contact with the
skin, eyes or clothing.
! Only charge the installed battery with a
battery charger which has been tested and
approved by Mercedes-Benz. These battery
chargers allow the battery to be charged
while still installed.
! Only use battery chargers with a
maximum charging voltage of 14.8 V.
! Only charge the battery using the jump-
starting connection point.
The jump-starting connection point is in the
engine compartment ( Y page 471).XOpen the hood ( Y page 446).XConnect the battery charger to the positive
terminal and earth point in the same order
as when connecting the donor battery in
the jump-starting procedure
( Y page 471).XRead the battery charger's operating
instructions before charging the battery.470BatteryRoadside assistance

Jump-startingGWarning
Failure to follow these directions will cause damage to the electronic components, and can lead
to a battery explosion and severe injury or death.
Never lean over batteries while connecting or jump starting. You might get injured.
Battery fluid contains sulfuric acid. Do not allow this fluid to come in contact with eyes, skin or
clothing. In case it does, immediately flush affected area with water, and seek medical help if
necessary.
A battery will also produce hydrogen gas, which is flammable and explosive. Keep flames or
sparks away from battery, avoid improper connection of jumper cables, smoking, etc.
Attempting to jump start a frozen battery can result in it exploding, causing personal injury.
Read all instructions before proceeding.
GWarning
Hybrid vehicles: ensure that you read the "HYBRID" supplement. You may otherwise fail to
recognize dangers.
! Avoid repeated and lengthy starting attempts. Otherwise, non-combusted fuel may
damage the catalytic converter 33
and create a risk of fire.
Do not use a rapid-charging device to start the engine.
Make sure the jumper cables are not damaged.
Make sure the jumper cables are not touching any other metal objects when they are
connected to the battery.
If your vehicle's battery is discharged, the engine can be jump-started from another vehicle
or from a second battery using jumper cables.
Observe the following points:
XThe battery is not accessible in all vehicles. If the other vehicle's battery is not accessible,
jump-start the vehicle using a second battery or a jump-starting device.XOnly jump-start the vehicle when the engine and catalytic converter are cold. 34XDo not start the engine if the battery is frozen. Let the battery thaw first.XJump-starting may only be performed from batteries with a nominal voltage of 12 V.
If you jump-start using a battery with higher voltage, it may damage the electrical systems
of the vehicle.XOnly use jumper cables that have a sufficient cross-section and insulated terminal clamps.XMake sure that the jumper cables cannot come into contact with parts, such as the pulley
or the fan. These parts move when the engine is started and while it is running.XIf the battery is fully discharged, leave the battery that is being used to jump-start connected
for a few minutes before attempting to start. This charges the empty battery a little.
i Jumper cables and further information about jump-starting can be obtained from any
authorized Mercedes-Benz Center.
33 Only vehicles with a gasoline engine.
34 Only vehicles with a gasoline engine.Jump-starting471Roadside assistanceZ