Page 326 of 420

Setting the compass
North America zone map
South America zone map
X
Set your location using the zone maps.
X Press and hold button =(Y page 323) for
approximately three seconds.
The zone currently selected appears in
compass display ;(Y page 323).
X To select the zone: press
button =(Y
page 323) repeatedly until the
desired zone is selected.
The zone has been selected when compass
display ;(Y page 323) shows the heading.
This takes a few seconds. Calibrating the compass X
Make sure that there is sufficient space for
you to drive in a circle without impeding
traffic.
In order to calibrate the compass correctly,
do the following:
R calibrate the compass in the open and not
in the vicinity of steel structures or high-
voltage transmission lines.
R switch
off electrical consumers such as the
climate control, windshield wipers or rear
window defroster.
R close all doors and the trunk lid/tailgate.
X Switch on the ignition.
X Press and hold button =(Y page 323) for
approximately six seconds until the
C symbol appears in compass display ;
(Y page 323).
X Drive in a full circle at approximately
3 mph (5 km/h) to
6 mph (10 km/h).
When the calibration has successfully been
completed, the current direction is shown
in compass display ;(Y page 323). Floormat on the driver's side
G
WARNING
Whenever you are using a floormat, make sure
there is enough clearance and that the
floormat is securely fastened.
The floormat should always be securely
fastened using the fastening equipment.
Before driving off, check that the floormat is
securely
in place and adjust it if necessary. A
loose floormat could slip and hinder proper
functioning of the pedals.
Do not place several floormats on top of each
other as this may impair pedal movement. 324
Features
Stowage and features
Page 346 of 420

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
Page 387 of 420

Always observe the instructions and safety
notes in the "Mounting a wheel" section
(Y page 385).
The wear patterns on the front and rear tires
differ,
depending on the operating conditions.
Rotate the wheels before a clear wear pattern
has formed on the tires. Front tires typically
wear more on the shoulders and the rear tires
in the center.
If your vehicle's tire configuration allows, you
can rotate the wheels according to the
intervals in the tire manufacturer's warranty
book in your vehicle documents. If this is not
available, the tires should then be replaced
every 3,000 to 6,000 miles (5,000 to
10,000 km), or earlier if the tire wear requires
this. Do not change the direction of wheel
rotation.
Clean the contact surfaces of the wheel and
the brake disc thoroughly every time a wheel
is interchanged. Check the tire pressure and,
if necessary, restart the tire pressure loss
warning system or the tire pressure monitor. Direction of rotation
Tires with a specified direction of rotation
have
additional benefits, e.g. if there is a risk
of hydroplaning. You will only gain these
benefits if the correct direction of rotation is
maintained.
An arrow on the sidewall of the tire indicates
its correct direction of rotation. Storing wheels
Store
wheels that are not being used in a cool,
dry and preferably dark place. Protect the
tires from oil, grease, gasoline and diesel. Cleaning the wheels
G
WARNING
The water jet from a circular jet nozzle (dirt
blasters)
can cause invisible exterior damage to the tires or chassis components.
Components damaged in this way may fail
unexpectedly. There is a risk of an accident.
Do not use power washers with circular jet
nozzles to clean the vehicle. Have damaged
tires or chassis components replaced
immediately.
Mounting a wheel
Preparing the vehicle X
Park the vehicle on firm, non-slippery and
level ground.
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 If included in the vehicle equipment, take
the tire-change tool kit out of the vehicle.
X Secure the vehicle to prevent it from rolling
away. Changing a wheel
385
Wheels and tires Z