Page 99 of 506

98 Controls in detailLocking and unlockingUnlocking and opening the trunk lid
You can unlock and open the trunk lid
separately.
A minimum height clearance of 5.41 ft
(1.65 m) is required to open the trunk lid.
Press and hold button Š until the
trunk lid unlocks and begins to open.
The trunk lid can also be opened from its
inside in an emergency, see “Trunk lid
emergency release” (
page 109).Loss of SmartKey or mechanical key
If you lose a SmartKey or mechanical key,
you should do the following:
Have the SmartKey deactivated by an
authorized Mercedes-Benz Center.
Report the loss of the SmartKey or the
mechanical key immediately to your
car insurance company.
If necessary, have the mechanical lock
replaced.
Your authorized Mercedes-Benz Center
will be glad to supply you with a replace-
ment.
SmartKey with KEYLESS-GO*
Vehicles equipped with KEYLESS-GO come
with two SmartKeys with KEYLESS-GO,
each with remote control and a removable
mechanical key. The locking tabs for the
mechanical key portion of the two
SmartKeys are a different color to help
distinguish each SmartKey unit.
The KEYLESS-GO function is integrated
into the SmartKey. On these vehicles, the
validity of the SmartKey with KEYLESS-GO
is checked every time you pull a door
handle.
If the SmartKey with KEYLESS-GO is valid,
your vehicle unlocks
the doors
the glove box
the trunk lid
the fuel filler flap
!The trunk lid swings open upwards au-
tomatically. Always make sure there is
sufficient overhead clearance.iIf the vehicle was previously centrally
locked, the trunk lid will lock automati-
cally when closed (
page 107). The
turn signals will flash three times to
confirm locking.
Page 303 of 506

302 OperationAt the gas stationRefueling
The fuel filler flap is located on the
right-hand side of the vehicle towards the
rear. Locking/unlocking the vehicle with
the SmartKey or the SmartKey with
KEYLESS-GO* automatically locks/un-
locks the fuel filler flap.1To open the fuel filler flap
2To insert the fuel filler cap
Turn the engine off
by turning the SmartKey to
position0. Remove the SmartKey
from the starter switch.
by pressing the KEYLESS-GO*
start/stop button. Open the driv-
er’s door (with driver’s door open,
starter switch is now in position0,
same as with SmartKey removed
from starter switch).
Open the fuel filler flap by pushing at
the point indicated by the arrow1.
The fuel filler flap springs open.
Turn fuel cap counterclockwise and
hold on to it until possible pressure is
released.
Take off cap and set it in direction of
arrow2 in the recess on the fuel filler
flap.
To prevent fuel vapors from escaping
into open air, fully insert filler nozzle
unit.
Only fill your tank until the filler nozzle
unit cuts out – do not top up or
overfill.
Warning!
G
Gasoline is highly flammable and poisonous.
It burns violently and can cause serious inju-
ry. Whenever you are around gasoline, avoid
inhaling fumes and skin contact, extinguish
all smoking materials. Never allow sparks,
flame or smoking materials near gasoline!
Failure to remove the fuel cap slowly could
result in personal injury.
Page 400 of 506
399 Practical hints
Unlocking/locking in an emergency
1Locking
Insert the mechanical key into the
driver’s door lock until it stops.
Turn the mechanical key clockwise to
position1.
The driver’s door is locked.
Fuel filler flap
In case the central locking system does
not release the fuel filler flap, you can open
it manually.
The release button is on the right-hand
side of the luggage compartment behind
the side trim.
Open trunk lid.
Remove the side trim from the
right-hand side of the luggage compart-
ment.
Reach inside through opening2 in di-
rection of arrow.
Turn release knob 1 clockwise (arrow)
as far as will go.
The fuel filler flap is released and can
be opened from outside.
Open the fuel filler flap from outside.
Warning!
G
If you operate the emergency release but-
ton, be careful of the sharp edges so that
you do not injure yourself.
Page 494 of 506

493 Index
Tread 338
Tread depth 315
Tread depth (tires) 340
Treadwear indicators 338
Trip computer 158
Trip odometer
Resetting 131
Trunk
Auxiliary fuse box 438
Closing 107
Luggage cover 245
Message in display 390
Opening 106
Opening from inside vehicle 107
Trunk lid 106
Trunk lock 398
Unlocking with KEYLESS-GO* 104
Unlocking with SmartKey 98
Trunk lid emergency release 109
Turn signal lamps
Replacing bulbs 414, 415Turn signals 51
Additional in mirrors 414
Cleaning lenses 348
Front bulbs 414
Front bulbs (Bi-Xenon*) 419
Front bulbs (Halogen) 417
Indicator lamps 25
Rear bulbs 415, 420
Turning off
Engine 56U
Uniform Tire
Quality Grading Standards 338
Units
Setting speedometer units 145
Setting temperature units 145
Unlocking 32, 94
Driver’s door in an emergency 397
Fuel filler flap 302
Gear selector lever manually 400
Global 96
Global with KEYLESS-GO* 101
In an emergency 397
Selective setting 96, 102
Trunk lid with KEYLESS-GO* 104
Trunk lid with SmartKey 98
Vehicle in an emergency 283
With KEYLESS-GO* 33
With the SmartKey 32