stowage well under the trunk floor/cargo
compartment floor.
Vehicles with a TIREFIT kit
Example: vehicle tool kit in the left-hand stowage
space
:
Tire sealant filler bottle
; Folding wheel chock
= One pair of gloves (under jack)
? Tire inflation compressor
A Towing eye
B Jack
C Alignment bolt
D Lug wrench
X Open the trunk lid/tailgate.
X Sedan: lift up the floor of the trunk
(Y page 301).
X Wagon: remove the seat cushions of the
folding bench seat (Y page 108). Vehicles with a spare
wheel/"Minispare" emergency spare
wheel :
Vehicle tool kit tray
; Stowage well
= Spare wheel/"Minispare" emergency
spare wheel
X Open the trunk lid/tailgate.
X Sedan: lift up the floor of the trunk
(Y page 301).
X Wagon: remove the seat cushions of the
folding bench seat (Y page 108).
The vehicle tool kit contains:
R Folding wheel chock
R Fuse allocation chart
R Jack
R Alignment bolt
R One pair of gloves
R Lug wrench
R Towing eye Where will I find...?
343Breakdown assistance
Vehicles with a collapsible spare wheel
:
Towing eye
; One pair of gloves
= Jack
? Folding wheel chock
A Alignment bolt
B Sheet for faulty wheel
C Tire inflation compressor
D Lug wrench
E Fuse allocation chart
X Open the trunk lid.
X Lift the trunk floor upwards (Y page 301). Flat tire
Preparing the vehicle
Information on changing/mounting a wheel
(Y page 384).
Vehicle preparation is not necessary on
vehicles with MOExtended tires.
Your vehicle may be equipped with:
R MOExtended tires (tires with run-flat
characteristics) (Y page 344)
R a TIREFIT kit (Y page 345)
R an emergency spare wheel
(Y page 398)
X Stop the vehicle on solid, non-slippery and
level ground, as far away as possible from
traffic.
X Switch on the hazard warning lamps.
X Apply the parking brake. X
Bring the front wheels into the straight-
ahead position.
X Shift the transmission to position P.
X Vehicles with AIRMATIC: make sure that
"normal" level is selected
(Y page 199).
X Switch off the engine.
X Vehicles without KEYLESS-GO: remove
the SmartKey from the ignition lock.
X Vehicles with KEYLESS-GO: open the
driver's door.
The on-board electronics have status 0,
which is the same as the SmartKey having
been removed.
X Vehicles with KEYLESS-GO: remove the
Start/Stop button from the ignition lock
(Y page 154).
X All occupants must get out of the vehicle.
Make
sure that they are not endangered as
they do so.
X Make sure that no one is near the danger
area while a wheel is being changed.
Anyone who is not directly assisting in the
wheel change should, for example, stand
behind the barrier.
X Get out of the vehicle. Pay attention to
traffic conditions when doing so.
X Close the driver's door. MOExtended tires (tires with run-flat
properties)
G
WARNING
When driving in emergency mode, the driving
characteristics deteriorate, e.g. when
cornering, accelerating quickly and when
braking. There is a risk of an accident.
Do not exceed the stated maximum speed.
Avoid
abrupt steering and driving maneuvers,
and driving over obstacles (curbs, potholes,
off-road). This applies in particular to a laden
vehicle.
Stop driving in emergency mode if:
R you hear banging noises.
R the vehicle starts to shake.344
Flat tire
Breakdown assistance
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