Page 422 of 498

420 Practical hintsBatteryThe battery is located in the engine
compartment on the right hand side.
1Clamps
Removing filter box:
Release clamps1.
Remove filter box.
Installing filter box:
Insert filter box properly.
Secure it with clamps1.
Warning!
G
Failure to follow these instructions can re-
sult in severe injury or death.
Observe all safety instructions and
precautions when handling automotive
batteries (
page 314).
Never lean over batteries while connecting,
you might get injured.
Battery fluid contains sulfuric acid. Do not
allow this fluid to come in contact with eyes,
skin or clothing. In case it does, immediately
flush affected area with water and seek
medical help if necessary.
A battery will also produce hydrogen gas,
which is flammable and explosive. Keep
flames or sparks away from battery, avoid
improper connection of jumper cables,
smoking, etc.
!Never loosen or detach battery termi-
nal clamps while the engine is running
or the SmartKey is in the starter switch.
Otherwise the alternator and other
electronic components could be se-
verely damaged.
Have the battery checked regularly by
an authorized Mercedes-Benz Center.
Refer to Maintenance Booklet for
maintenance intervals or contact an
authorized Mercedes-Benz Center for
further information.Warning!
G
Do not place metal objects on the battery as
this could result in a short circuit.
Use leak-proof battery only to avoid the risk
of acid burns in the event of an accident.
Page 424 of 498

422 Practical hintsBatteryCharging and reinstalling battery
Charge battery in accordance with the
instructions of the battery charger
manufacturer.
Reinstall the charged battery. Follow
the previously described steps in
reverse order.
Reconnecting the battery
Turn off all electrical consumers.
Remove SmartKey from starter switch.
Vehicles with KEYLESS-GO*:
Press the start / stop button until
the engine shuts off.
Open the driver’s door.
Connect the battery positive lead and
fasten its cover 2.
Connect the battery negative lead.
Reinstall the filter box (
page 420).Batteries contain materials that can harm
the environment if disposed of improperly.
Large 12-volt storage batteries contain
lead. Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.
Warning!
G
Never charge a battery while still installed in
the vehicle. Gases may escape during charg-
ing and cause explosions that may result in
paint damage, corrosion or personal injury.
!NEVER invert the terminal connections!!The battery, its filler caps and the vent
tube must always be securely installed
when the vehicle is in operation.
iThe following procedures must be car-
ried out following any interruption of
battery power (e.g. due to reconnect-
ing):
Set the clock (
page 151) (vehi-
cles with COMAND*: see COMAND
operator’s manual).
Resynchronize the side windows
(page 250).
Resynchronize the tilt/sliding
sunroof* (
page 254).
Page 448 of 498
446 Technical dataWeightsRoof load max.
220 lb (100 kg)
Trunk load max.
220 lb (100 kg)
Page 468 of 498

466 IndexClimate control 184
Activating 185
Adjusting air distribution 188
Air recirculation mode 190
Deactivating 185
Defrosting 189
Rear window defroster 183
Clock 25, 152
Closing
Cup holder 275
Glove box 272
Hood 309
Power tilt/sliding sunroof* 251, 401
Power tilt/sliding sunroof*
with KEYLESS-GO* 250, 253
Power tilt/sliding sunroof*
with SmartKey 253
Side windows 248
Trunk 107
Windows 247
Windows
with KEYLESS-GO* 250, 253
Windows
with SmartKey 249Closing power tilt/sliding sunroof*
In an emergency 401
Cockpit 22, 455
Cockpit management
and data system (COMAND*) 456
Cold tire inflation pressure 338
Collapsible tire (CLK 55 AMG only) 394
Collapsible wheel chock 392
COMAND* see separate
operating instructions
Combination switch 129
High beam flasher 129
Turn signals 51
Windshield wipers 52
Comfort driving
Transmission program mode 170
Control and
operation of radio transmitters 302Control system 137, 456
AUDIO menu 143
Convenience submenu 158
Display digital speedometer 142
Functions 138, 141
Instrument
cluster submenu 149, 151
Lighting submenu 154
Menus 140, 141, 457
Multifunction display 137
Multifunction steering wheel 138
NAV menu 144
Operate CD player 144
Selecting radio system 143
Selecting satellite radio* system 143
Settings menu 146
Standard display menu 142
Submenus 139, 141
TEL* menu 162
Trip computer menu 160
Vehicle status
message memory menu 145
Vehicle submenu 158
Page 471 of 498

469 Index
E
Easy-entry/exit feature 112
Activating 159
Electrical fuses 429
Electrical outlet in
rear passenger compartment 278
Electrical system
Technical data 444
Electronic Stability Program see ESP
Emergency call
911 245
Emergency call system* 280
Emergency calls
Initiating an emergency call 282
With Tele Aid 281
Emergency operation
(Limp Home Mode) 177
Emergency operations
Closing
power tilt/sliding sunroof* 401
Locking the vehicle 398
Opening
power tilt/sliding sunroof* 401
Remote door unlock 286
Unlocking the vehicle 397Emergency tensioning device see ETD
Emission control 304
Emission control information label 436
Ending
A call (telephone) 163
Engine
Compartment 308
Message in display 356
Starting 47
Starting with KEYLESS-GO* 47
Starting with the SmartKey 47
Technical data 438
Turning off 56
Engine cleaning 349
Engine compartment 308
Fuse box in 431
Hood 308
Engine malfunction
indicator lamp 25, 356
Engine number 436, 456Engine oil 309, 449
Adding 312
Additives 449
Checking level 310
Consumption 309
Filler cap 312
Filler neck 312
Message in display 379
Messages in display 311
Viscosity 456
Engine oil level see Oil level
ESP 25, 86, 456
Messages in display 367
Switching off 87
Switching on 88
Warning lamp 358
ETD 69, 456
Safety guidelines 64
Exterior lamp switch 124
Exterior rear view mirrors
Adjusting 41
Parking position for 160
Page 475 of 498

473 Index
Instrument cluster 24, 134, 457
Cleaning 351
Coolant temperature indicator 135
Illumination 134
Lamps in 354–359
Multifunction display 137
Outside temperature indicator 136
Selecting language 150
Instruments and controls see Cockpit
Interior lighting 132
Activating automatic control 132
Deactivating automatic control 132
Delayed switch-off 157
Manual operation 133
Interior rear view mirror
Adjusting 41
Auto-dimming 178
Interior storage compartments 272
Intermittent wipe 53
J
Jack 389
Jump starting 423K
Key, mechanical 397
Key, SmartKey with KEYLESS-GO*
Replacing the batteries 403
Key-dependency memory
Settings 160
KEYLESS-GO* 457
Activating ignition with 36
Closing power
tilt/sliding sunroof* with 250, 253
Closing windows with 250, 253
Factory setting 101
Global locking 101
Global unlocking 101
Important notes 100
Locking the vehicle 103
Messages in display 381
Remote controls 99
Starting the engine 47
Turning off the engine 57
Unlocking with 33
Unlocking, trunk lid 104
Kickdown 171, 457
Kilometers/miles in speedometer 149
Kilopascal 339
Km/h or mph in speedometer 149L
Labels, identification 436
Lamp bulbs, exterior 404
Lamp sensor
Messages in display 383
Lamps, exterior
Front 404
Light sensor 383
Messages in display 382–385
Rear 405
Lamps, indicator and warning
ABS 354
Battery (SmartKey) 96, 102
Brakes 355
Center console 360
CHECK ENGINE 356
Coolant 357, 375
Engine diagnostics 356
ESP 358
Front passenger front
air bag off indicator lamp 66, 360
Fuel reserve 359
Instrument cluster 354–359
Page 476 of 498

474 Index
Maintenance service indicator 344
Parktronic system*
warning indicators 262
Seat belts 359
SRS 61, 359
Turn signals 25
Language
Multifunction display 150
Setting 150
LATCH child seat anchors 80
Folding back 81
Folding out 81
Layout of poly-V-belt drive 437
Leather upholstery
Cleaning 352
License plate lamps
Messages in display 383
Replacing bulbs 405, 410
Light alloy wheels
Cleaning 351
Technical data 440
Light sensor 383
Lighter see Cigarette lighterLighting 124
Automatic headlamp mode 125
Combination switch 129
Cornering fog lamps* 130
Daytime running lamp mode 126
Door entry lamps 133
Exterior lamp switch 124
Front fog lamps 128
High beam flasher 129
High beams 129
Instrument cluster illumination 134
Interior 132
Locator lighting 127
Low beam 124
Manual headlamp mode 125
Night security illumination 127
Parking lamps 124
Rear fog lamp 128
Settings (control system) 154
Limiting the gear range 168
Limp Home Mode 177
Line of fall 457Loading 264
Cargo tie-down rings 271
Instructions 269
Roof rack 264
Ski sack* 264
Split rear bench seat 267
Loading terminology 338
Loading the vehicle 319
Locator lighting 127
Setting 156
Lock buttons 457
Door handle (KEYLESS-GO*) 58
Locking 55, 94
Fuel filler flap 305
Global with KEYLESS-GO* 101
Global, SmartKey 96
The vehicle with KEYLESS-GO* 103
Vehicle in an emergency 398
Loss of Service and
Warranty Information Booklet 435
Loss of SmartKey 98
Loss of SmartKey
with KEYLESS-GO* 105
Page 477 of 498

475 Index
Low beam headlamps
Messages in display 383
Replacing bulbs (Bi-Xenon*) 404
Replacing bulbs (Halogen) 404, 406
Lowering
Vehicle 418
Lubricants
Technical data 447M
Main dimensions 445
Maintenance 12, 344
Maintenance service 344
Basic service (Service A) 344
Calling up the
maintenance service indicator 345
Extended service (Service B) 344
Overdue 345
Types 344
When due 344
Maintenance service indicator 344
Calling up 345
Clearing 345
Resetting 346
Maintenance service system 344
Maintenance system 457
Malfunction
Vehicle status message memory 362
Manual headlamp mode 125Manual operations
Fuel filler flap 399
Interior lighting control 133
Locking the vehicle 398
Power tilt/sliding sunroof* 401
Unlocking gear selector lever 400
Unlocking the driver’s door 397
Manual shift program 175
MAXCOOL maximum cooling 200
Maximum inflation pressure 339
Maximum load rating 339
Maximum loaded vehicle weight 339
Mechanical key 397
Memory function 121, 457
Recalling
positions from memory 122
Storing exterior rear view
mirror parking positions 123
Storing key-dependent settings 122