Page 286 of 440
286 OperationEngine compartment
Screw filler cap1 back on filler neck.
More information on engine oil can be
found in the “Technical data” section
(
page 388) and (
page 390).
Transmission fluid level
The transmission fluid level does not need
to be checked. If you notice transmission
fluid loss or gear shifting malfunctions,
have an authorized Mercedes-Benz Center
check the automatic transmission.
Coolant
The engine coolant is a mixture of water
and anticorrosion/antifreeze. To check
the coolant level, the vehicle must be
parked on level ground and the engine
must be cool.
The coolant expansion tank is located on
the passenger side of the engine compart-
ment.
!Excess oil must be siphoned or drained
off. It could cause damage to the en-
gine and catalytic converter not cov-
ered by the Mercedes-Benz Limited
Warranty.
Page 326 of 440
326 Practical hintsWhat to do if …?Display symbol
Display message
Possible cause
Possible solution
:
USA only:Add 1 qt. engine oil
when next refuelingCanada only:Add 1 liter engine oil
when next refueling
The engine oil level is too low.
Add engine oil (
page 285) and check
the engine oil level (
page 283).
Engine oil level
Reduce oil level!
You have added too much engine oil.
There is a risk of damaging the engine or
the catalytic converter.
Have oil siphoned or drained off. Ob-
serve all legal requirements with re-
spect to its disposal.
Engine oil level
Stop, engine off!
There is no oil in the engine. There is a
danger of engine damage.
Carefully bring the vehicle to a halt as
soon as possible.
Turn off the engine.
Add engine oil (
page 285) and check
the engine oil level (
page 283).
Page 336 of 440
336 Practical hintsWhat to do if …?Display symbol
Display message
Possible cause
Possible solution
K
Close
sunroof!
You have opened the driver’s door with
the SmartKey removed from the starter
switch and the sliding/pop-up roof open.
Close the sliding/pop-up roof
(page 214).
J
Close
sunroof!
You have opened the driver’s door with
the SmartKey removed from the starter
switch and the sliding/pop-up roof open.
Close the sliding/pop-up roof
(page 214).
ì
Function
Not available
This display appears if button ì or
í on the multifunction steering wheel
is pressed and the vehicle is not equipped
with a telephone.
Ê
Close trunk lid!
This message will appear whenever the
trunk lid is open.
Close the trunk lid.
W
Washer fluid
Check level
The fluid level has dropped to about
1/3 of
total reservoir capacity.
Add washer fluid (
page 289).
Page 398 of 440

398 Technical termsCAC
(C
ustomer A
ssistance C
enter)
Mercedes-Benz customer service cen-
ter, which can help you with any ques-
tions about your vehicle and provide
assistance in the event of a break-
down.
CAN system
(C
ontroller A
rea N
etwork)
Data bus network serving to control ve-
hicle functions such as door locking or
windshield wiping.
Cockpit
All instruments, switches, buttons and
indicator/warning lamps in the passen-
ger compartment needed for vehicle
operation and monitoring.COMAND
(C
ockpit M
anagement and D
ata Sys-
tem)
Information and operating center for
vehicle sound and communications
systems, including the radio and the
navigation system, as well as other op-
tional equipment (CD changer, tele-
phone, etc.).
Control system
The control system is used to call up
vehicle information and to change
component settings. Information and
messages appear in the multifunction
display. The driver uses the buttons on
the multifunction steering wheel to
navigate through the system and to ad-
just settings.
Cruise control
Driving convenience system for auto-
matically maintaining the vehicle speed
set by the driver.Distronic*
A driving convenience cruise control
system which helps the driver maintain
a pre-selected speed:
If there is no vehicle directly ahead,
the system operates in the same
way as conventional ->cruise con-
trol.
If a slower moving vehicle is ahead,
Distronic will reduce your vehicle
speed to the extent permitted by re-
duced throttle and up to 20% brak-
ing power to maintain the preset
minimum following distance.
Page 402 of 440

402 Technical termsTele Aid System
(T
elematic A
larm I
dentification on D
e-
mand)
The Tele Aid system consists of three
types of response: automatic and man-
ual emergency, roadside assistance
and information. Tele Aid is initially ac-
tivated by completing a subscriber
agreement and placing an acquain-
tance call.
The Tele Aid system is operational pro-
vided that the vehicle’s battery is
charged, properly connected, not dam-
aged and cellular and GPS coverage is
available.
Telematics*
A combination of the terms “telecom-
munications” and “informatics”.Tightening torque
Force times lever arm (e.g. a lug
wrench) with which threaded fasteners
such as wheel bolts are tightened.
Tire speed rating
Part of tire designation; indicates the
speed range for which a tire is ap-
proved.
Traction
Force exerted by the vehicle on the
road via the tires.VIN
(V
ehicle I
dentification N
umber)
The number set by the manufacturer
and placed on the body to uniquely
identify each vehicle produced.
Voice control system*
Voice control system for car phones,
portable cell phones and audio sys-
tems (radio, CD, etc.).
Page 404 of 440

404 IndexAir conditioning (cooling)
Turning off 181
Turning on 181
Air conditioning refrigerant 390
Air distribution
Adjusting 176
Air pressure see Tire inflation pressure
Air recirculation mode 178
Activating 178
Deactivating 179
Air vents, rear passenger compartment
Adjustable 182
Air volume
Adjusting 177
Airbags 59
BabySmart
TM
airbag deactivation system 397
Children 60
Front 63
Passenger 63
Safety guidelines 62
Side impact 64
Window curtain 64Alarm
Audible 75, 83, 84
Canceling 83, 84
Visual 82
Alarm system
Anti-theft 82
Alignment bolt 360
Alignment bolt (vehicle tool kit) 397
Anticorrosion/antifreeze 393
Antiglare
Automatic 167
Antilock brake system (ABS) 397
Anti-theft alarm system
Arming 82
Canceling alarm 83, 84
Disarming 82
Anti-theft systems 81
Anti-theft alarm system 82
Immobilizer 81
Tow-away alarm 83
Aquaplaning see Hydroplaning
Armrest
Storage spaces 246Ashtray (Center console) 247
Opening 247
Reinstalling 248
Removing 248
Ashtray (Rear seat) 248
Opening 248
Reinstalling 248
Removing 248
At the gas station 278
ATF (automatic transmission fluid) 286
AUDIO menu 134
Selecting radio station 135
Selecting satellite radio* station 135
Audio system 183
Audio and telephone, operation 183
Button and soft key operation 186
Cassette operation 196
CD operation 199
Operating and display elements 184
Operating safety 183
Operation 186
Radio operation 189
Switching off 186
Switching on 186
Telephone operation 203
Page 410 of 440

410 Index
Rapid seat heating*
without seat ventilation* 114
Rear window defroster 171
Residual heat 182
Seat heating*
with seat ventilation* 115
Seat heating*
without seat ventilation* 114
Seat ventilation* 113
Steering wheel gearshift control
(CLK 55 AMG) 165
Tow-away alarm 83, 84
Trunk lid opening limiter*
(control system) 149
Deceleration
With Distronic* 224
Deep water see Standing water
Defogging
Windshield 176
Defrosting 177
Delayed switch-off
Interior lighting 148
Dialing
A number (telephone) 155Difficulties
While driving see
Problems while driving
With starting 45
Digital speedometer 134
Direction of rotation (tires) 291
Discharged battery
Jump starting 366
Disconnecting
Vehicle battery 364
Display
Selecting 143, 144
Display elements
Audio system 184
Displays
Digital speedometer 134
Distronic* 223
Messages 284, 314
Selecting 143
Service indicator 296
Showing malfunctions 138Distance
Decreasing in Distronic* 229
Increasing in Distronic* 229
Setting in Distronic* 228
Warning function 229
Distance to empty (range)
Calling up 152
Distance warning function* 229
Activating 230
Deactivating 230
Distance warning lamp 229
Intermittent warning sound 229
Symbol in multifunction display 137
Distronic* 221, 398
Activated 225
Activating 226
Calling up settings 137, 224
Cleaning system sensor 301
Cruise control lever 225
Deactivated 225
Deactivating 228
Deceleration 224
Decreasing distance 229
Decreasing time interval 228
Displays in the speedometer dial 223
Distance warning function 229
Page 412 of 440

412 IndexE
Easy-entry/exit feature 107
Activating 150
Interrupting movement 150
Electrical fuses 372
Electrical system
Technical data 385
Electronic Stability Program see ESP
Emergency call system* 251
Emergency calls
Initiating an emergency call 254
Telephone* 208
With Tele Aid 252
Emergency operation
(Limp Home Mode) 165
Emergency operations
Closing sliding/pop-up roof* 348
Locking the vehicle 344
Opening sliding/pop-up roof* 348
Remote door unlock 258
Unlocking the vehicle 343
Emergency tensioning device see ETD
Emission control 276
Emission control label 378Ending
A call (telephone) 155
Engine
Compartment 281
Message in display 308
Starting 44
Starting with KEYLESS-GO* 44
Starting with the SmartKey 44
Technical data 380
Turning off 53
Engine cleaning 300
Engine compartment 281
Fuse box in 373
Hood 281
Engine malfunction
indicator lamp 23, 308
Engine number 399Engine oil 283, 390
Adding 285
Additives 390
Checking level 283
Consumption 283
Filler cap 285
Filler neck 285
Message in display 326
Messages in display 284
Viscosity 399
Engine oil level see Oil level
ESP 23, 78, 399
Messages in display 318
Switching off 79
Switching on 80
Warning lamp 310, 311
ETD 399
Safety guidelines 62
ETD (Emergency tensioning device) 67
Exterior lamp switch 119
Exterior rear view mirrors
Adjusting 39
Parking position for 151