Page 436 of 514
435 Practical hints
Unlocking/locking in an emergency
Unlocking/locking in an emergency
Unlocking the vehicle
If you cannot unlock the vehicle with the
SmartKey or SmartKey with
KEYLESS-GO*, open the driver’s door us-
ing the mechanical key. Removing the mechanical key
1Mechanical key locking tab
2Mechanical key
Move locking tab1 in direction of ar-
row.
Slide mechanical key2 out of the
housing.Unlocking the driver’s door
Insert the mechanical key2 into the
driver’s door lock until it stops.
Turn mechanical key2 counterclock-
wise to position1 until the locking
knobs move up.
The driver’s door is unlocked.
Pull door handle to open the driver’s
door.
i
Unlocking your vehicle with the mechanical
key and opening the driver’s door or the cargo
compartment will trigger the anti-theft alarm sys-
tem.
To cancel the alarm, Insert the SmartKey or
SmartKey with KEYLESS-GO* in the starter
switch.
1
Unlocking
2
Mechanical key
Page 437 of 514

436 Practical hintsUnlocking/locking in an emergencyUnlocking and opening the tailgate
(Vehicles without foldable third row
seat, E 63 AMG only)
A minimum height clearance of 6.81 ft
(2.07 m) is required to open the tailgate.
The emergency release is located on the
inside of the tailgate.
1Release lever
2Cover
Remove cover2 from the trim on the
tailgate.
Push release lever1 in direction of ar-
row.
Lift the tailgate.
Locking the vehicle
If you are unable to lock the vehicle with
the SmartKey or SmartKey with
KEYLESS-GO*, do the following:
Close the passenger door, the rear
doors and the tailgate.
Press the central locking switch in the
center console (
page 127).
Check to see whether the locking
knobs on the doors have moved down.
If necessary, push them down
manually.
Except for the driver’s door, the vehicle
should now be locked.
!
Always make sure there is sufficient over-
head clearance.
i
If the vehicle has previously been locked us-
ing the SmartKey, opening the tailgate from the
inside will trigger the anti-theft alarm system*.
To cancel the alarm, do one of the following:
Press buttonŒ or‹ on the
SmartKey.
Insert the SmartKey in the starter switch.
Page 438 of 514
437 Practical hints
Unlocking/locking in an emergency
Remove the mechanical key2 out of
the SmartKey (
page 435).
Insert the mechanical key2 into the
driver’s door lock until it stops.
Turn the mechanical key2 clockwise
to position1.
The driver’s door is locked.Manually unlocking the gear selector
lever
In case of power failure, the gear selector
lever can be manually unlocked, e.g. to tow
the vehicle.
1Pin
Open the storage compartment in the
center armrest (
page 283).
Take out the cup holder (
page 284).
Insert a suitable object1 (e.g. a pin)
through the hole and press the pin
downward.
Remove pin1.
1
Locking
2
Mechanical key
i
This procedure does not arm the anti-theft
alarm system, nor does it lock the fuel filler flap.
i
The gear selector lever is locked again when
moving it to positionP.
Page 439 of 514
438 Practical hintsOpening/closing in an emergencyPower tilt/sliding sunroof
You can open or close the tilt/sliding sun-
roof manually should an electrical malfunc-
tion occur.
The tilt/sliding sunroof drive is located be-
hind cover1 of the interior overhead
light.
1Cover
Remove the SmartKey from the starter
switch.
Press on cover1 in direction of the ar-
row to release it.2Hole
3Crank
Take crank3 out of the glove box.
Insert crank3 through hole2.
Turn crank3 clockwise to:
slide sunroof closed
raise sunroof at the rear
Turn crank3 counterclockwise to:
slide sunroof open
lower sunroof at the rear
i
Do not disconnect the electrical connectors.
i
Turn crank3 slowly and smoothly.
The tilt/sliding sunroof must be synchronized af-
ter being operated manually (
page 245).
Page 441 of 514

440 Practical hintsReplacing SmartKey batteriesIf the batteries in the SmartKey/SmartKey
with KEYLESS-GO* are discharged, the ve-
hicle can no longer be locked or unlocked.
It is recommended to have the batteries re-
placed at an authorized Mercedes-Benz
Center.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/SmartKey with
KEYLESS-GO*
Replacement batteries: Lithium, type
CR 2025 or equivalent.
Remove the mechanical key1 out of
the SmartKey/SmartKey with
KEYLESS-GO* (
page 435).
1Mechanical key
2Battery compartment
Insert mechanical key1 into opening.
Press mechanical key1 in direction of
arrow.
The battery compartment is unlatched.
Warning!
G
Batteries contain poisonous and corrosive
substances. Therefore keep the batteries
out of reach of children.
If a battery is swallowed, seek medical help
immediately.
i
When inserting the batteries, make sure
they are clean and free of lint.
i
When replacing batteries, always replace
both batteries.
The required replacement batteries are available
at any Mercedes-Benz Center.
Page 442 of 514
441 Practical hints
Replacing SmartKey batteries
Pull battery compartment2
(page 440) out of the housing.
3Battery
4Contact spring
Pull out batteries3.
Using a lint-free cloth, insert new bat-
teries 3 under contact spring4 with
the positive terminal (+) side facing up.
Return battery compartment2
(page 440) into housing until it locks
into place.
Slide mechanical key1 (
page 440)
back into the SmartKey/SmartKey
with KEYLESS-GO*.
Check the operation of the
SmartKey/SmartKey with
KEYLESS-GO*.
Page 449 of 514

448 Practical hintsReplacing wiper blades
Placing front wiper arms in vertical po-sitionWiper blades in vertical positionVehicles with SmartKey
Turn SmartKey to starter switch
position1 (
page 37).
Turn combination switch to wiper
settingu (
page 57).
With wiper arms in the vertical position,
turn SmartKey in starter switch to
position0.
Remove SmartKey from starter switch.
Warning!
G
For safety reasons, switch off wipers and re-
move SmartKey from starter switch (vehi-
cles with KEYLESS-GO*: Make sure the
vehicle’s on-board electronics have
status0) before replacing a wiper blade.
Otherwise, the wiper motor could suddenly
turn on and cause injury.Warning!
G
Wiper blades are components that are sub-
ject to wear and tear. Change the wiper
blades twice a year, preferably in the spring
and fall. Otherwise the windows will not be
properly wiped. As a result, you may not be
able to observe surrounding traffic condi-
tions and could cause an accident.
!
To avoid damage to the hood:
The wiper arms should only be folded for-
ward when in the vertical position.
Never open the hood when the wiper arm is
folded forward.
!
Hold on to the wiper when folding the wiper
arm back. If released, the force of the impact
from the tensioning spring could crack the wind-
shield.
Do not allow the wiper arms to contact the wind-
shield glass without a wiper blade inserted.
Make sure the wiper blades are properly in-
stalled. Improperly installed wiper blades may
cause windshield damage.
For your convenience, we recommend that you
have this work carried out by an authorized
Mercedes-Benz Center.
Page 450 of 514

449 Practical hints
Replacing wiper blades
Vehicles with KEYLESS-GO*
Turn off the engine (
page 64).
With the driver’s door closed, the start-
er switch is now in position1.
Turn combination switch to wiper
settingII (
page 57).
With wiper arms in the vertical position,
open the driver’s door.
The starter switch is set to position0,
same as SmartKey removed from start-
er switch.
Turn combination switch to wiper
setting0 (
page 57).
Removing front wiper blades
Fold the wiper arm forward until it
snaps into place.
Turn the wiper blade at a right angle to
wiper arm.
Slide the wiper blade sideways out of
the retainer.
Installing front wiper blades
Slide the wiper blade onto wiper arm
until it locks in place.
Rotate the wiper blade into position
parallel to the wiper arm.
Fold the wiper arm backward to rest on
the windshield. Make sure you hold on
to the wiper when folding the wiper arm
back.
Removing rear wiper blade
!
Do not pull on the wiper blade inserts. They
could tear.
!
Hold on to the wiper when folding the wiper
arm back. If released, the force of the impact
from the tensioning spring could crack the rear
window.
Do not allow the wiper arms to contact the rear
window glass without a wiper blade inserted.
For your convenience, we recommend that you
have this work carried out by an authorized
Mercedes-Benz Center.
Make sure the wiper blades are properly in-
stalled. Improperly installed wiper blades may
cause rear window damage.