Page 88 of 442

88 Controls in detailLocking and unlocking
In the “Controls in detail” section you will
find detailed information on how to oper-
ate the equipment installed on your vehi-
cle. If you are already familiar with the
basic functions of your vehicle, this section
will be of particular interest to you.
To quickly familiarize yourself with the ba-
sic functions of the vehicle, refer to the
“Getting started” section of this manual.
The corresponding page numbers are giv-
en at the beginning of each segment.
Locking and unlocking
SmartKey
Your vehicle comes supplied with two
SmartKeys, each with remote controls 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 key unit.
The SmartKey provides an extended oper-
ating range. To prevent theft, however, it is
advisable to only unlock the vehicle when
you are in close proximity to it.
The SmartKey centrally locks and unlocks
the doors
the trunk
the fuel filler flap
SmartKey 1‹ Lock button
2Š Unlock button for the trunk lid
3Mechanical key locking tab
4Œ Unlock button
5Battery check lamp
6Â Panic button (
page 73)
Page 125 of 442

125 Controls in detail
Lighting
Deactivating automatic control
Press the switch3.
The interior lighting remains switched
off, even when you
centrally unlock the vehicle
open a door
remove the SmartKey from the
starter switch
Manual control
Switching rear interior lights on and off
Press button2.
The lights in the rear passenger com-
partment go on.
Press button2 again.
The lights in the rear passenger com-
partment go out.Switching left front reading lamp on and
off
Press button1.
The left reading lamp goes on.
Press button1 again.
The left reading lamp goes out.
Switching right front reading lamp on
and off
Press button5.
The right reading lamp goes on.
Press button5 again.
The right reading lamp goes out.
Door entry lamps
The appropriate door entry lamp switches
on if a door is opened in darkness and if
the interior lighting is switched to the auto-
matic function.
The entry lamp goes out automatically
when the door is closed.Trunk lamp
The trunk lamp switches on if the trunk lid
is opened.
If you leave the trunk open for an extended
period of time, the trunk lamp will switch
off automatically after approximately ten
minutes.
iIf you turn the SmartKey in the starter
switch to position0 or remove the
SmartKey, the door entry lamps will re-
main lit for approximately five minutes.
Page 287 of 442

287 Operation
Engine compartment
Battery
Your vehicle is equipped with two batter-
ies:
Auxiliary battery (located in the engine
compartment).
Main battery (starter and electrical
consumers; located in the trunk).
These batteries should always be suffi-
ciently charged in order to achieve their
rated service life. Refer to Service Booklet
for battery maintenance intervals.
If you use your vehicle mostly for short-dis-
tance trips, you will need to have the bat-
tery charge checked more frequently.
When replacing batteries, always use bat-
teries approved by Mercedes-Benz.
If you do not intend to operate your vehicle
for an extended period of time, consult an
authorized Mercedes-Benz Center about
steps you need to observe.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.
G
Observe all safety instructions
and precautions when handling
automotive batteries.
A
Risk of explosion
D
Keep flames or sparks away
from battery. Do not smoke.
B
Battery acid is caustic. Do not
allow it to come into contact
with skin, eyes or clothing.
In case it does, immediately
flush affected area with clear
water and seek medical help if
necessary.
E
Wear eye protection.
C
Keep children away.
F
Follow the instructions in this
Operator's Manual.
Page 354 of 442

354 Practical hintsUnlocking / locking in an emergencyUnlocking the trunk
A minimum height clearance of 5.90 ft
(1.80 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 handle is located above the rear li-
cense plate recess.
1Unlocking in an emergency
2Handle
Insert the mechanical key into the
trunk lid lock.
Turn the mechanical key counterclock-
wise to position1 and hold it in this
position.
Pull trunk lid handle2 and lift the
trunk lid.
Locking the vehicle
If you are unable to lock the vehicle with
the SmartKey, lock it with the mechanical
key as follows:
Close the passenger doors and the
trunk.
Press the central locking switch in the
cockpit (
page 107).
Check to see whether the locking
knobs on the passenger doors are still
visible. If necessary, push them down
manually.
Slide mechanical key2 out of the
SmartKey.
Lock the driver’s door with the me-
chanical key (
page 354).
Check if the trunk is locked. If neces-
sary lock the trunk with the mechanical
key (if appilcable) (
page 105).
!Always make sure there is sufficient
overhead clearance.iUnlocking your vehicle with the me-
chanical key 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.
Vehicles with KEYLESS-GO*:
Grasp the outside door handle.
Press the start /stop button.
Page 357 of 442
357 Practical hints
Unlocking / locking in an emergency
Fuel filler flap emergency release
In case the central locking system does
not release the fuel filler flap, you can open
it manually.
1Release knob
Open trunk lid.
Remove right-side tail trim.
Turn release knob1 clockwise (ar-
row).
The fuel filler flap can know be opened.Manually unlocking the transmission
selector lever
In the case of power failure, the transmis-
sion selector lever can be manually un-
locked, e.g. to tow the vehicle.
1Pin
Open the storage compartment in the
center console (
page 244).
Take out the cup holder*.
Using two fingers in the horizontal slot
at the upper rear side of the cup holder,
lift cup holder upwards to remove.
Hold the cover at a 45° angle.
Insert a suitable object1 (e.g. a pin)
through the hole and press the pin
downward.
Remove pin1. iThe selector lever is locked again when
moving it to positionP.
Page 427 of 442

427 Index
Interior lighting 124
Activating automatic control 124
Deactivating automatic control 125
Delayed switch-off 149
Manual operation 125
Interior rear view mirror
Adjusting 38
Interior storage spaces 242
Glove box 242
J
Jack 350
Jump starting 378
K
Key, Mechanical 353
Key, SmartKey
Changing the batteries 355, 356
Key, SmartKey with KEYLESS-GO*
Changing the batteries 355, 356KEYLESS-GO*
Activating ignition with 33
Closing
Trunk 102, 103
Closing panorama sliding/pop-up
roof* 200, 203
Closing side windows 200, 203
Closing sliding/pop-up roof* 200,
203
Factory setting 94
Global locking 94
Global unlocking 94
Important notes 92
Locking the vehicle 96
Remote controls 91
Starting the engine 44
Turning off engine 53
Unlocking and opening, trunk lid 95
Unlocking with 32
Kickdown 164, 413
Kilometers/miles in speedometer 141
Km/h or mph in speedometer 141L
Lamp bulbs, exterior 359
Lamps, exterior
Front 359
Light sensor 338
Messages in display 338–??
Replacing bulbs for rear 360, 363
Lamps, indicator and warning
ABS 310
Airbag Off 61
Battery (SmartKey) 89, 94
Brakes 312
CHECK ENGINE 313
Coolant 314
DTR* 216
Engine diagnostics 313
ESP 311
Fuel reserve 313
SBC 79
Seat belts 313, 315
Service indicator 297
SRS 57
Page 428 of 442

428 IndexLanguage
Multifunction display 142
Setting 142
LATCH child seat anchors 71
Layout of poly-V-belt drive 391
Leather upholstery
Cleaning 308
Level control system*
Airmatic DC* 226
Lever
For cruise control 218
License plate lamps 360
Messages in display 338
Replacing bulbs 363
Light alloy wheels
Cleaning 307
Light sensor 338
Lighter see Cigarette lighter 247
Lighting 119
Automatic headlamp mode 120
Combination switch 123
Daytime running lamp mode 121Door entry lamps 125
Exterior lamp switch 119
Front fog lamps 122
High beams 123
Instrument cluster illumination 126
Instruments 126, 127
Interior 124
Locator lighting 121
Low beam 119
Manual headlamp mode 120
Night security illumination 121
Parking lamps 119
Rear fog lamp 122
Settings (control system) 146
Trunk lamp 125
Limiting the gear range 160
Limp Home Mode 167
Loading 233
Cargo tie-down rings 241
Instructions 240
Roof rack* 233
Ski sack* 233
Split rear bench seat* 236Locator lighting 121
Setting 147
Lock button 413
Door handle (KEYLESS-GO*) 54
Locking 51, 88
Automatic while driving 106
Centrally from inside 107
Fuel filler flap 278
Global with KEYLESS-GO* 94
Global, SmartKey 89
Separately the trunk 105
Vehicle in an emergency 354
Vehicle with KEYLESS-GO* 96
Loss of SmartKeys 91, 96
Low beam headlamps
Messages in display 338
Replacing bulbs 359
Lowering
Vehicle 374
Page 429 of 442

429 Index
M
Main Dimensions 398
Maintenance 12
Malfunction
Displaying 137
Malfunction memory 137
Calling up 137
Clearing 138
MANUAL
Shift program mode
(SL 55 AMG Kompressor) 165
Manual headlamp mode 120
Manual operations
Fuel filler flap 357
Interior lighting control 125
Locking the trunk 105
Sliding/pop-up roof* or panorama slid-
ing/pop-up roof* 358
Unlocking the driver’s door 353
Unlocking the transmission lever 357
Unlocking the trunk lid 354
Massage function 113
MAXCOOL maximum cooling 190
Mechanical key 353Memory function 116, 413
Recalling positions from
memory 117
Storing exterior rear view mirror park-
ing positions 118
Storing SmartKey dependent
settings 117
Menus 132
AUDIO 134
Control system 413
Distronic* 136, 217
In control system 132, 133
Malfunction memory 137
Settings menu 138
Standard display 134
Submenus 131
TEL* 155
Trip computer 153
Miles/kilometers in speedometer
Setting 141
Minispare wheel
Mounting 373Mirrors
Adjusting 38
Automatic antiglare for rear view
mirror 168
Automatic antiglare* for inside
mirror 168
Exterior rear view mirror 38
Exterior rear view mirror parking
positions 152, 169
Interior rear view mirror 38
Storing exterior mirror parking
position 118
MON 279
MON (Motor Octane Number) 413
Mph or km/h in speedometer 141
Multicontour seat* 111
Multifunction display 129, 414
Selecting language 142
Standard display 133
Multifunction display messages
ABS 319
Batteries 320, 324, 325
Brake fluid 328
Brake pads 326
Check engine 313