
Example: engine oil cap
X
Turn cap  : counter-clockwise and remove
it.
X Add engine oil.
If the oil level is at or below the MIN mark
on 
the oil dipstick, add 1.1 US qt (1.0 liter)
of engine oil.
X Replace cap  : on the filler neck and turn
clockwise.
Ensure that the cap locks into place
securely.
X Check the oil level again with the oil
dipstick (Y page 330).
Further information on engine oil
(Y page 410). Additional service products
Checking the coolant level G
WARNING
In order to avoid any potentially serious burns:
R use 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.
R do 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. R
using 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.
R do not spill antifreeze on hot engine parts.
Antifreeze contains ethylene glycol which
may burn if it comes into contact with hot
engine parts. X
Park the vehicle on a level surface.
Only check the coolant level when the
vehicle 
is on a level surface and the engine
has cooled down.
X Turn the SmartKey to position  2 in the
ignition lock ( Y page 153).
On vehicles with KEYLESS-GO, press the
Start/Stop button twice 
(Y page 154).
X Check the coolant temperature display in
the instrument cluster.
The coolant temperature must be below
158 ‡
 (70 †).
X Turn the SmartKey to position
0 (Y page 153) in the ignition lock.
X Slowly turn cap  : half a turn counter-
clockwise to allow excess pressure to
escape.
X Turn 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 level is approximately 0.6 in
(1.5 cm) above marker bar  = in the filler Engine compartment
331
Maintenance and care Z     

neck when warm, there is enough coolant
in coolant expansion tank 
;.
X If necessary, add coolant that has been
tested and approved by Mercedes-Benz.
X Replace cap  :  and turn it clockwise as far
as it will go.
For further information on coolant, see
(Y page 412).
Adding washer fluid to the windshield
washer system/headlamp cleaning
system G
WARNING
Washer solvent/antifreeze is highly
flammable. Do not spill washer solvent/
antifreeze 
on hot engine parts, because it may
ignite and burn. You could be seriously
burned. X
To open: pull cap  : upwards by the tab.
X Add the premixed washer fluid.
X To close:  
press cap  : onto the filler neck
until it engages.
The washer fluid reservoir is used for both the
windshield 
 washer system and the headlamp
cleaning system.
Further information on windshield washer
fluid/antifreeze ( Y page 413). Maintenance
ASSYST PLUS
Service messages The ASSYST PLUS service interval display
informs you of the next service due date.
Information 
on the type of service and service
intervals (see separate Service Booklet).
You can obtain further information from an
authorized Mercedes-Benz Center or at
http://www.mbusa.com (USA only).
i The ASSYST PLUS service interval display
does not show any information on the
engine oil level. Observe the notes on the
engine oil level ( Y page 329).
The multifunction display shows a service
message for several seconds, e.g.:
Next Service A in .. days
Service A Due
Service A Exceeded by ... days
The letter A or B, possibly in connection with
a number or another letter, shows the type of
service.  A stands for a minor service and  B for
a major service.
You can obtain further information from an
authorized Mercedes-Benz Center.
The ASSYST PLUS service interval display
does not take into account any periods of
time during which the battery is
disconnected.
Maintaining the time-dependent service
schedule:
X Note down the service due date displayed
in the multifunction display before
disconnecting the battery.
or
X After reconnecting the battery, subtract
the 
battery disconnection periods from the
service date shown on the display. 332
Maintenance
Maintenance and care   

necessary for you to disconnect the battery
yourself, make sure that:
R
you 
switch off the engine and remove the
key. On vehicles with KEYLESS-GO,
ensure that the ignition is switched off.
Check that all the indicator lamps in the
instrument cluster are off. Otherwise,
electronic components, such as the
alternator, may be damaged.
R you first remove the negative terminal
clamp and then the positive terminal
clamp. Never swap the terminal clamps.
Otherwise, the vehicle's electronic
system may be damaged.
R in vehicles with automatic transmission,
the transmission is locked in position P
after disconnecting the battery. The
vehicle is secured against rolling away.
You can then no longer move the vehicle.
The battery and the cover of the positive
terminal clamp must be installed securely
during operation.
In order for the battery to achieve the
maximum possible service life, it must always
be sufficiently charged.
The vehicle battery, like other batteries, can
discharge over time if you do not use the
vehicle. In this case, have the battery
disconnected at a qualified specialist
workshop. You can also charge the battery
with a charger recommended by Mercedes-
Benz. Contact a qualified specialist workshop
for further information.
Have the battery charge level checked more
frequently if you use the vehicle mainly for
short trips or if you leave it standing idle for
a lengthy period. Consult a qualified specialist
workshop if you wish to leave your vehicle
parked up for a long period of time.
i Remove the SmartKey if you park the
vehicle and do not require any electrical
consumers. The vehicle will then use very
little energy, thus conserving battery
power. i
If the power supply has been interrupted,
e.g. if you reconnect the battery, you will
have to:
Rset the clock. Information on setting the
clock can be found in the separate
operating instructions.
On vehicles with COMAND and a
navigation system, the clock is set
automatically.
R reset the function for folding the exterior
mirrors in/out automatically, by folding
the mirrors out once ( Y page 114). Charging the battery
G
WARNING
Never charge a battery still installed in the
vehicle 
 unless a battery charger 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.
A battery charger unit specially adapted for
Mercedes-Benz vehicles and tested and
approved by Mercedes-Benz is available as an
accessory. It permits the charging of the
battery in its installed position. Contact an
authorized Mercedes-Benz Center for further
information and availability.
Charge the battery in accordance with the
separate instructions for the battery charger. G
WARNING
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. G
WARNING
Battery acid is caustic. Avoid contact with the
skin, eyes or clothing.
!  Only use battery chargers with a
maximum charging voltage of 14.8 V. 350
Battery (vehicle)
Breakdown assistance 

Information on your vehicle's gross vehicle
weight rating can be found on the vehicle
identification plate (
Y page 405).
It is better to have the vehicle transported
than to have it towed.
If the vehicle has suffered transmission
damage, 
have it transported on a transporter
or trailer.
The automatic transmission must be in
position N when the vehicle is being towed.
The battery must be connected and charged.
Otherwise, you:
R cannot turn the SmartKey to position  2 in
the ignition lock
R cannot shift the automatic transmission to
position N
i Deactivate the automatic locking feature
(Y page 86). You could otherwise be locked
out when pushing or towing the vehicle. Installing/removing the towing eye
Installing the towing eye G
WARNING
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. Example: Sedan, towing eye covers
The 
mountings for the removable towing eyes
are located in the bumpers. They are at the
front and at the rear, under the covers.
X Remove the towing eye from the vehicle
tool kit ( Y page 342).
X Press the mark on cover  : inwards in the
direction of the arrow.
X Take cover : off the opening.
X Screw the towing eye in clockwise to the
stop and tighten it.
Removing the towing eye X
Loosen the towing eye and unscrew it.
X Attach cover  : to the bumper and press
until it engages.
X Place the towing eye in the vehicle tool kit. Towing the vehicle with the rear axle
raised
!  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. Towing and tow-starting
355
Breakdown assistance Z   

Example
X
Make sure the foot of the jack is directly
beneath the jacking point.
X Turn crank  A clockwise until jack  ? sits
completely on jacking point  = and the
base of the jack lies evenly on the ground.
X Turn crank  A until the tire is raised a
maximum of 1.2 in (3 cm ) off the ground.
Removing a wheel ! 
AMG vehicles:  during removal and
repositioning of the wheel, the wheel rim
can strike the ceramic-brake disc and
damage 
it. Therefore, take precautions and
get a second person to assist you.
Alternatively, you can use a second
alignment bolt.
!  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. X
Unscrew the uppermost wheel bolt
completely.
X Screw alignment bolt : into the thread
instead of the wheel bolt.
X Unscrew the remaining wheel bolts fully.
X Remove the wheel.
Mounting a new wheel G
WARNING
Oiled or greased wheel bolts or damaged
wheel 
 bolts/hub threads can cause the wheel
bolts to come loose. As a result, you could
lose a wheel while driving. There is a risk of
accident.
Never oil or grease wheel bolts. In the event
of damage to the threads, contact a qualified
specialist workshop immediately. Have the
damaged wheel bolts or hub threads
replaced/renewed. Do not continue driving. G
WARNING
If you tighten the wheel bolts or wheel nuts
when the vehicle is raised, the jack could tip
over. There is a risk of injury.
Only tighten the wheel bolts or wheel nuts
when the vehicle is on the ground.
Always pay attention to the instructions and
safety notes in the "Changing a wheel"
section ( Y page 384).
Only 
use wheel bolts that have been designed
for the wheel and the vehicle. For safety
reasons, Mercedes-Benz recommends that
you only use wheel bolts which have been
approved for Mercedes-Benz vehicles and the
respective wheel.
!  AMG vehicles:  during removal and
repositioning of the wheel, the wheel rim
can strike the ceramic-brake disc and
damage it. Therefore, take precautions and
get a second person to assist you.
Alternatively, you can use a second
alignment bolt. 388
Changing a wheel
Wheels and tires     

! 
To  prevent damage to the paintwork, hold
the wheel securely against the wheel hub
while screwing in the first wheel bolt. Positioning a wheel (example: vehicle with
emergency spare wheel)
X
Clean the wheel and wheel hub contact
surfaces.
X Slide the wheel to be mounted onto the
alignment bolt and push it on.
X Tighten the wheel bolts until they are
finger-tight.
X Unscrew the alignment bolt.
X Tighten the last wheel bolt until it is finger-
tight.
X Vehicles with a collapsible spare 
wheel:  inflate the collapsible spare wheel
(Y page 400).
Only then lower the vehicle.
Lowering the vehicle G
WARNING
The wheels could work loose if the wheel nuts
and bolts are not tightened to the specified
tightening torque. There is a risk of accident.
Have the tightening torque immediately
checked at a qualified specialist workshop
after a wheel is changed.
!  Vehicles with a collapsible spare 
wheel:  before lowering the vehicle, inflate
the collapsible spare wheel with the tire
inflation compressor. The wheel rim could
otherwise be damaged. Tightening wheel bolts (example: vehicle with
emergency spare wheel)
X
Turn the crank of the jack counter-
clockwise until the vehicle is once again
standing firmly on the ground.
X Place the jack to one side.
X Tighten the wheel bolts evenly in a
crosswise pattern in the sequence
indicated ( : 
to A). The tightening torque
must be 96 lb-ft (130 Nm).
X Turn the jack back to its initial position.
X Stow the jack and the rest of the vehicle
tools in the trunk again.
X AMG vehicles and vehicles with AMG 
equipment:  
insert the cover into the outer
sill.
X Check the tire pressure of the newly
mounted wheel and adjust it if necessary.
Observe the recommended tire pressure
(Y page 366).
i Vehicles with tire pressure monitor: all
wheels mounted must be equipped with
functioning sensors. Wheel and tire combinations
General notes
!  For safety reasons, Mercedes-Benz
recommends that you only use tires and
wheels which have been approved by
Mercedes-Benz specifically for your
vehicle. Wheel and tire combinations
389
Wheels and tires Z     

Removing the "Minispare"
emergency spare wheel/collapsible
spare wheel
Opening the stowage well Example: well insert
Sedan: the emergency spare wheel can be
found in the stowage well under the trunk
floor.
X
Lift the trunk floor upwards (Y page 301).
X Release tabs  : on the right of well
insert  ;.
X Reach into recess = of well insert ;,
swing the insert up and remove it.
Wagon: the emergency spare wheel is
located in the stowage well under the cargo
compartment floor.
X Remove the seat cushions of the folding
bench seat (Y page 108).
X Lift the cargo compartment floor up. Removing the emergency spare wheel
(Sedan) Example: Sedan
X
Remove vehicle tool kit tray  :.
X Turn stowage tray  ; counter-clockwise
and remove it.
X Remove "Minispare" emergency spare
wheel  =.
Removing the emergency spare wheel
(Wagon) Example: emergency spare wheel
X
Remove vehicle tool kit tray  : by
recess ;.
X Remove "Minispare" emergency spare
wheel  =. Emergency spare wheel
399Wheels and tires Z