Page 329 of 418

328 Practical hintsWhat to do if …?Display symbol
Display message
Possible cause
Possible solution
H
TIRE PRES. MONITOR
REACTIVATED
The tire pressure monitor is using the current
pressure values as the basis for monitoring.
TIRE PRES. MONITOR
CURRENTLY
UNAVAILABLE
The tire pressure monitor is temporarily inop-
erative because:
an additional wheel sensor is in the vehi-
cle
the maximum temperature of the wheel
sensor has been exceeded
a radio source is causing interference
unrecognized wheel sensors have been
installed
Remove any additional wheel sensors
from the vehicle
As soon as the causes of the malfunction
have been removed, the tire inflation
pressure monitor automatically becomes
active again.
TIRE PRES. MONITOR
NOT OPERATIONAL
DRIVE TO WORKSHOP
The tire pressure monitor or a wheel sensor
is malfunctioning.
Have the tire inflation pressure moni-
tor checked by an authorized
Mercedes-Benz Center.
A wheel without proper sensor was installed.
Have the wheels checked.
Warning!
G
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle.
You may lose control of the vehicle. Contin-
ued driving with a flat tire will cause exces-
sive heat build-up and possibly a fire.
Page 330 of 418

329 Practical hints
Where will I find...?
Where will I find...?
First aid kit
The first aid kit is stored in the rear center
armrest.
1Arm rest
2Lid
Fold rear arm rest down1.
Press handle upwards.
Fold lid2 up.
Remove first aid kit.Vehicle jack, vehicle tool kit, luggage
bowl, spare wheel
The spare wheel, the vehicle tool kit and
the luggage bowl are stored in the com-
partment underneath the trunk floor.
1Vehicle jack
2Vehicle tool kit
3Luggage bowl
4Spare wheel
Lift up trunk floor cover and engage
trunk floor handle in upper edge of
trunk.
You can now remove the tools and ac-
cessories.
The vehicle tool kit includes:
One interchangeable slot/Phillips
screwdriver
One towing eye bolt
One wheel bolt wrench with socket
wrench
One alignment bolt
One pair of gloves
One fuse extractor
One fuse chart for the main fuse box
Spare fuses
iCheck expiration dates and contents
for completeness at least once a year
and replace missing/expired items.
!To prevent damage, always disengage
trunk floor handle from trunk edge and
lower trunk floor before closing the
trunk lid.
Page 331 of 418

330 Practical hintsWhere will I find...?Vehicle jack
To prepare the vehicle jack for use
Remove the vehicle jack from the spare
wheel well under the trunk floor.
Push the crank handle up.
Turn the crank handle clockwise until it
engages (operational position).
Storing the vehicle jack in the trunk
Retract the vehicle jack arm to the
base of the vehicle jack.
Push the crank handle up.
Turn the crank handle counterclock-
wise to the end of the stop (storage po-
sition).Spare wheel
Removing the spare wheel
Take out vehicle tool kit tray 2.
Turn the luggage bowl 3 counter-
clockwise.
Remove the spare wheel 4.
Storing the spare wheel
Place spare wheel 4 in wheel well and
secure it with luggage bowl 3.
Turn the luggage bowl 3 clockwise to
its stop.
Place vehicle tool kit tray 2 in luggage
bowl 3.
Warning!
G
The jack is designed exclusively for jacking
up the vehicle at the jack take-up brackets
built into both sides of the vehicle. To help
avoid personal injury, use the jack only to lift
the vehicle during a wheel change. Never
get beneath the vehicle while it is supported
by the jack. Keep hands and feet away from
the area under the lifted vehicle. Always
firmly set parking brake and block wheels
before raising vehicle with jack.
Do not disengage parking brake while the
vehicle is raised. Be certain that the jack is
always vertical (plumb line) when in use, es-
pecially on hills. Always try to use the jack
on level surface. Make sure the jack arm is
fully seated in the jack take-up bracket. Al-
ways lower the vehicle onto sufficient ca-
pacity jackstands before working under the
vehicle.
Page 332 of 418
331 Practical hints
Unlocking/locking in an emergency
Unlocking/locking in an emergency
Unlocking the vehicle
If you are unable to unlock the vehicle with
the SmartKey, open the driver’s door and
the trunk using the mechanical key.
1Mechanical key locking tab
2Mechanical key
Move locking tab1 in direction of ar-
row and slide the mechanical key2
out of the housing.Unlocking the driver’s door
1Unlocking
2Locking
Unlock the door with the mechanical
key. To do so, push the mechanical key
in the lock until it stops and turn it to
the left.
iUnlocking your vehicle with the me-
chanical key will trigger the anti-theft
alarm system.
To cancel the alarm, do one of the fol-
lowing:
With SmartKey
Press button Œ or ‹ on the
SmartKey.
Insert the SmartKey in the starter
switch.
With KEYLESS-GO*
Press the KEYLESS-GO* start/stop
button (
page 33).
Grasp the outside door handle
(page 57).
Page 333 of 418

332 Practical hintsUnlocking/locking in an emergencyUnlocking the trunk
A minimum height clearance of 6.3 ft
(1.90 m) is required to open the trunk lid.
If you are unable to unlock the trunk with
the SmartKey or KEYLESS-GO*, open the
trunk with the mechanical key.
The trunk lid lock is located above the rear
license plate recess.
1Unlocking and opening
2Trunk lid lock
Insert the mechanical key into the
trunk lid lock2.
Turn the mechanical key counterclock-
wise to position1 and press trunk lid
lock2 in direction of arrow.
The trunk unlocks and opens.
Locking the vehicle
If you are unable to lock the vehicle with
the SmartKey or the SmartKey with
KEYLESS-GO*, lock it with the mechanical
key as follows:
Close the passenger door and the trunk
lid.
Press the central locking switch in the
center console (
page 106).
Check to see whether the locking knob
on the passenger door is still visible. If
necessary push it down manually.
Slide mechanical key2 out of the
SmartKey (
page 331).
Lock the driver’s door with the me-
chanical key (
page 331).
Lock the trunk lid necessary with the
mechanical key (if applicable)
(page 104).
Replacing batteries in the SmartKey/
SmartKey with KEYLESS-GO*
If the batteries in the SmartKey or the
SmartKey with KEYLESS-GO* are dis-
charged, the vehicle can no longer be
locked or unlocked. It is recommended to
have the batteries replaced at an autho-
rized Mercedes-Benz Center.
!The trunk lid swings open upwards au-
tomatically. Always make sure that
there is sufficient overhead clearance.
Warning!
G
Keep the batteries out of reach of children.
If a battery is swallowed, seek medical help
immediately.
Page 334 of 418
333 Practical hints
Unlocking/locking in an emergency
Batteries contain materials that can harm
the environment if disposed of improperly.
Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.
SmartKey
1Mechanical key
2Battery compartment
Replacement batteries: Lithium, type
CR 2025 or equivalent.
Remove mechanical key1
(page 331).
Insert the mechanical key1 in side
opening and push gray slide.
The battery compartment is unlatched.
Pull the battery compartment2 out of
the SmartKey housing in direction of
arrow.
Remove the batteries.3Battery
4Contact spring
Using a lint-free cloth, insert new
batteries3 under the contact
spring4 with the plus (+) side facing
up.
Return battery compartment into hous-
ing until it locks into place.
iWhen changing batteries, always re-
place both batteries.
The required replacement batteries are
available at any authorized
Mercedes-Benz Center.
Page 335 of 418

334 Practical hintsUnlocking/locking in an emergencySmartKey with KEYLESS-GO*
1Battery
2Tilt battery up
3Mechanical keyReplacement battery: Lithium, type
CR 2025 or equivalent.
Remove mechanical key (
page 331).
Insert the mechanical key in side open-
ing and push gray slide.
The battery compartment is unlatched.
Pull the battery compartment out of the
SmartKey housing.
Using mechanical key3, apply pres-
sure to position2.
Battery1 tilts up slightly.
Pull out battery1 in direction of ar-
row.
Using a lint-free cloth, insert new bat-
tery with the plus (+) side facing up.
Return battery compartment into hous-
ing until it locks into place.
Fuel filler flap
In case the central locking system does
not release the fuel filler flap, you can it
manually.
1Release knob
Open the trunk.
Remove the battery cover and the trim
inside the trunk on the right-hand side.
Pull release knob 1 in the direction of
arrow.
The fuel filler flap can be opened.
iThe required replacement battery is
available at any authorized
Mercedes-Benz Center.
Page 336 of 418
335 Practical hints
Opening/closing in an emergency
Opening/closing in an emergency
Sliding/pop-up roof
You can open or close the sliding/pop-up
roof manually should an electrical malfunc-
tion occur.
The driving mechanism for the slid-
ing/pop-up roof is located behind the lens
of the interior overhead light.
1Lens
Pry off lens1 using a flat blade screw-
driver (
page 329).
Turn the SmartKey in the starter switch
to position1 or2.
Remove the crank from the operator’s
manual pouch.
2Crank
Insert crank2 through hole.
Turn crank2 clockwise to:
close slide roof
raise roof at the rear
Turn crank2 counterclockwise to:
open slide roof
lower roof at the rear
The sliding/pop-up roof must be resyn-
chronized after being operated manually
(
page 194).