clock MERCEDES-BENZ S-Class 2011 W221 User Guide

If the engine is not at normal operating
temperature (e.g. if the engine was only
started briefly): repeat the measurement
after about 30 minutes.
If the Engine Oil Level Not Measurable
With Running Engine message appears:
XSwitch off the engine.XIf the engine is at normal operating
temperature: wait about five minutes
before carrying out the measurement.
If the engine is not at normal operating
temperature, e.g. if the engine was only
started briefly: wait about 30 minutes
before carrying out the measurement.
iIf you wish to cancel the measurement,
press the % button on the multifunction
steering wheel.
Adding engine oil
HEnvironmental note
When adding oil, take care not to spill any. If
oil enters the soil or waterways, it is harmful
to the environment.
! Only use engine oils and oil filters which
have been approved for vehicles with a
service system. A list of the engine oils and
oil filters that have been tested and
approved according to the Mercedes-Benz
specifications for service products can be
found on the Internet at http://
www.mbusa.com (USA only). Further
information on tested and approved engine
oils and oil filters can be obtained from any
authorized Mercedes-Benz Center.
The following causes engine failure or
damage to the exhaust system:
Rusing engine oils and oil filters that are
not specifically approved for the service
system
Rreplacing the engine oil and oil filter after
having exceeded the interval for
replacement prescribed by the
maintenance system
Rusing engine oil additives
Engine oil cap (example)
Engine oil cap (AMG vehicles, example: 8-cylinderengine)
XTurn cap : counter-clockwise and remove
it.
XAdd the amount of oil required.
Observe the specifications in the on-board
computer when doing so or fill carefully to the
maximum mark on the oil dipstick.
iVehicles with a dipstick: the difference in
quantity between the MIN mark and the
MAX mark on the dipstick is (depending on
the engine) approximately 1.6 to
2.1 US qt (1.5 to 2 l).
iAMG vehicles with 8-cylinder engines: the
difference in quantity between the MIN
mark and the MAX mark on the dipstick is
approximately 1.6 US qt (1.5 l).
! Do not add too much oil. If the oil level is
above the "max" mark on the dipstick, too
Engine compartment449Maintenance and careZ

much oil has been added. This can lead to
damage to the engine or the catalytic
converter. Have excess oil siphoned off.
Further information on engine oil
(Y page 513).
XReplace cap : on the filler neck and
tighten clockwise.
Ensure that the cap locks into place
securely.
Checking and adding other service
products
Check coolant level
Only check the coolant level when the vehicle
is on a level surface and the engine has cooled
down.
XTurn the key to position 2 (Y page 299) in
the ignition lock.
On vehicles with KEYLESS-GO, press the
Start/Stop button twice (Y page 299).
XCheck the coolant temperature display in
the instrument cluster.
The coolant temperature must be below
158 ‡ (70 †).
GWarning
In order to avoid any potentially serious burns:
Ruse extreme caution when opening the
hood if there are any signs of steam or
coolant leaking from the cooling system, or
if the coolant temperature display indicates
that the coolant is overheated.
Rdo not remove the pressure cap on the
coolant reservoir if the coolant temperature
is above 158 ‡ (70 †). Allow the engine to
cool down before removing the cap. The
coolant reservoir contains hot fluid and is
under pressure.
Rusing a rag, slowly turn the cap
approximately 1/2 turn to relieve excess
pressure. If opened immediately, scalding
hot fluid and steam will be blown out under
pressure.
Rdo not spill antifreeze on hot engine parts.
Antifreeze contains ethylene glycol which
may burn if it comes into contact with hot
engine parts.
XSlowly turn cap : half a turn counter-
clockwise and allow excess pressure to
escape.
XTurn cap : further counter-clockwise and
remove it.
If the coolant is at the level of marker bar
= in the filler neck when cold, there is
enough coolant in coolant expansion
tank ;.
If the coolant is approximately 0.6 in
(1.5 cm) above marker bar = in the filler
neck when warm, there is enough coolant
in coolant expansion tank ;.
XIf necessary, add coolant that has been
tested and approved by Mercedes-Benz.
XReplace cap : and turn it clockwise as far
as it will go.
For further information on coolant, see
(Y page 515).
Windshield washer system/headlamp
cleaning system
The washer fluid reservoir is used for both the
windshield washer system and the headlamp
cleaning system.
450Engine compartmentMaintenance and care

Vehicle equipment
i This 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.
Where will I find...?
First-aid kit
XOpen the trunk lid.XRelease retainer strap :.XRemove first-aid kit ; from the parcel net.
i
Check the expiration date on the first-aid
kit at least once a year. Replace the
contents if necessary, and replace missing
contents.
Vehicle tool kit
The vehicle tool kit can be found in the
stowage well under the trunk floor.
XLift the trunk floor upwards ( Y page 426).:Folding wheel chock;Vehicle tool kit tray cover=Vehicle tool kit?Jack
"Minispare" emergency spare wheel
The "Minispare" emergency spare wheel can
be found in the stowage well under the trunk
floor.
XLift the trunk floor upwards ( Y page 426).XTurn stowage tray = counter-clockwise
and remove together with vehicle tool kit
tray ;.XRemove "Minispare" emergency spare
wheel :.
For further information on changing a wheel
and installing the spare wheel, see
( Y page 463).
462Where will I find...?Roadside assistance

XMake sure that the base of the jack is
positioned directly under the jacking point.
XTurn crank ? clockwise until jack = sits
completely on jacking point ; and the
base of the jack lies evenly on the ground.
XTurn crank ? until the tire is raised a
maximum of 1.2 inches (3 centimeters)
from the ground.
Removing a wheel
XUnscrew the uppermost wheel bolt
completely.
XScrew alignment bolt : into the thread
instead of the wheel bolt.
XUnscrew the remaining wheel bolts fully.
! Do not place wheel bolts in sand or on a
dirty surface. The bolt and wheel hub
threads could otherwise be damaged when
you screw them in.
XRemove the wheel.Mounting a new wheelGWarning!
Always replace wheel bolts that are damaged
or rusted.
Never apply oil or grease to wheel bolts.
Damaged wheel hub threads should be
repaired immediately. Do not continue to
drive under these circumstances! Contact an
authorized Mercedes-Benz Center or call
Roadside Assistance.
Incorrect wheel bolts or improperly tightened
wheel bolts can cause the wheel to come off.
This could cause an accident. Make sure to
use the correct wheel bolts.
GWarning
Only use genuine Mercedes-Benz wheel bolts.
Other wheel bolts may come loose.
Do not tighten the wheel bolts when the
vehicle is raised. Otherwise, the vehicle could
fall off the jack.
GWarning
Make sure to use the original length wheel
bolts when remounting the original wheel
after it has been repaired.
Wheel bolts for:
:All light-alloy wheels and "Minispare"
emergency spare wheel with light-alloy
wheel
;"Minispare" emergency spare wheel with
steel wheel
466Flat tireRoadside assistance

! Always use wheel bolts : to fit the
"Minispare" emergency spare wheel with
light-alloy wheel. Using other wheel bolts
when fitting the "Minispare" emergency
spare wheel with light-alloy wheel could
damage the brake system.
Always use wheel bolts ; to fit the
"Minispare" emergency spare wheel with
steel wheel. Using other wheels when
fitting the "Minispare" emergency spare
wheel with steel wheel could damage the
brake system.
XClean the wheel and wheel hub contact
surfaces.
! To prevent damage to the paintwork, hold
the wheel securely against the wheel hub
while screwing in the first wheel bolt.
XSlide the emergency spare wheel onto the
alignment bolt and push it on.
XTighten the wheel bolts until they are
finger-tight.
XUnscrew the alignment bolt.XTighten the last wheel bolt until it is finger-
tight.
Lowering the vehicle
XTurn the crank of the jack counter-
clockwise until the vehicle is once again
standing firmly on the ground.
XPlace the jack to one side.XTighten the wheel bolts evenly in a
crosswise pattern in the sequence
indicated (: to A). The tightening torque
must be 110 lb/ft (150 Nm).
GWarning
Have the tightening torque checked
immediately after a wheel is changed. The
wheels could come loose if they are not
tightened to a torque of 110 lb/ft
(150 Nm).
XTurn the jack back to its initial position and
store it together with the rest of the vehicle
tool kit in the stowage well under the trunk
floor.
iWhen you are driving with the emergency
spare wheel mounted, the tire pressure
monitor cannot function reliably. Only
restart the tire pressure monitor when the
defective wheel has been replaced with a
new wheel.
All mounted wheels must be equipped with
functioning sensors and the defective
wheel should no longer be in the vehicle.
MOExtended run-flat system
The MOExtended run-flat system allows you
to drive on even if there is a complete loss of
pressure in one or more tires.
The MOExtended run-flat system may only be
used in conjunction with the activated tire
pressure loss warning system or with the
activated tire pressure monitor.
Flat tire467Roadside assistanceZ

Installing/removing the towing eye
Installing the towing eye
XRemove the towing eye from the vehicle
tool kit (Y page 462).
GWarning
The exhaust tail pipe may be hot. You could
burn yourself if you touch the tail pipe. Be
particularly careful when removing the rear
cover.
The mountings for the removable towing eyes
are located in the bumpers. They are at the
front and at the rear, under the covers.
XPress the mark on cover : inwards, in the
direction of the arrow.
XTake cover : off the opening.XScrew the towing eye in clockwise to the
stop and tighten it.
Removing the towing eye
XLoosen the towing eye and unscrew it.XAttach cover : to the bumper and press
until it engages.
XPlace the towing eye in the vehicle tool kit.Towing the vehicle with the rear axle
raised
Only possible for vehicles without
4MATIC.
When having your vehicle towed with the rear
axle raised, observe the important safety
notes (Y page 473).
! The ignition must be switched off if you
are towing the vehicle with the rear axle
raised. Intervention by ESP® could
otherwise damage the brake system.
XSwitch on the hazard warning flashers
(Y page 276).
XTurn the SmartKey to position 0 in the
ignition lock and remove the SmartKey.
XWhen leaving the vehicle, take the
SmartKey or the KEYLESS-GO key with you.
Towing vehicles with both axles on
the ground
When having your vehicle towed, observe the
important safety notes (Y page 473).
GWarning
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.
The automatic transmission automatically
shifts to position P when you open the driver's
or front-passenger door or when you remove
the SmartKey from the ignition lock. In order
to ensure that the automatic transmission
stays in position N when towing, do the
following:
XMake sure that the vehicle is stationary and
that the SmartKey is in position 0 in the
ignition lock.
XTurn the SmartKey to position 2 in the
ignition lock.
474Towing and tow-startingRoadside assistance