Page 291 of 464

291 Operation
Engine compartment
Adding engine oil
1Filler cap
Unscrew filler cap1 from filler neck.
Be careful not to overfill with oil.
Add engine oil as required. Be careful
not to overfill with oil.
Be careful not to spill any oil when adding.
Avoid environmental damage caused by oil
entering the ground or water.
Screw filler cap1 back on filler neck.
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.
!Only use approved engine oils. For a
listing of a approved engine oils, refer
to the Factory Approved Service Prod-
u c t s p a m p hl e t i n y o u r v e h i c l e l i t e r a t u r e
portfolio.
In addition, check the oil filler cap for
important information pertaining to the
engine oil needing to meet a specific
Mercedes-Benz specification (e.g. MB
229.5). If such information is printed
on the oil filler cap, only use an engine
oil from the list of approved engine oils
in the Factory Approved Service Prod-
ucts pamphlet that meets the specifi-
cation indicated on the oil filler cap.
Using engine oils of other specification
may cause the FSS to incorrectly deter-
mine the next service interval and will
result in engine damage not covered by
the Mercedes-Benz Limited Warranty.
!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.
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Page 332 of 464
332 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 291) and check
the engine oil level (
page 289).
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 291) and check
the engine oil level (
page 289).
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Page 342 of 464
342 Practical hintsWhat to do if …?Display symbol
Display message
Possible cause
Possible solution
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
Trunk open!
This message will appear whenever the
trunk lid is open.
Close the trunk lid.
Close trunk lid
This message will appear when the soft
top is operated with the trunk lid open.
Close the trunk lid.
Please close
trunk partition
This message will appear when the soft
top is operated with the luggage cover or
ski sack open.
Fold down and latch luggage cover
(page 216).
Close the ski sack roller blind
(page 217).
W
Washer fluid
Check level
The fluid level has dropped to about
1/3 of
total reservoir capacity.
Add washer fluid (
page 295).
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Page 420 of 464

420 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.
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Page 425 of 464

425 Technical terms
Tele 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.).
Wind screen
Screen for deflecting wind from the ve-
hicle interior when the soft top is
lowered.
ProCarManuals.com
Page 428 of 464

428 IndexAir 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 71, 419
Children 60
Front 63
Head-thorax 63
Passenger 63
Rear side-impact 64
Safety guidelines 62
Alarm
Audible 75, 84, 86
Canceling 84, 86
Visual 83
Alarm system
Anti-theft 83
Alignment bolt 382
Alignment bolt (vehicle tool kit) 419Anticorrosion/antifreeze 415
Antiglare
Automatic 168
Antilock brake system (ABS) 419
Anti-theft alarm system
Arming 83
Canceling alarm 84, 86
Disarming 84
Anti-theft systems 82
Anti-theft alarm system 83
Immobilizer 82
Tow-away alarm 84
Aquaplaning see Hydroplaning
Armrest
Storage spaces 251
Ashtray (Center console) 253
Opening 253
Reinstalling 254
Removing 253
Ashtray (Rear seat) 254
Opening 254
Reinstalling 254
Removing 254At the gas station 284
ATF (automatic transmission fluid) 291
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
Sound system 183
Switching off 186
Switching on 186
Telephone operation 203
Automatic antiglare for
rear view mirror 168
Automatic central locking
Activating/deactivating
(control system) 149
Locking/unlocking
(central locking switch) 108
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Page 434 of 464

434 Index
Residual heat 182
Seat ventilation* 113
Steering wheel gearshift control
(CLK 55 AMG) 165
Tow-away alarm 85
Deceleration
With Distronic* 232
Deep water see Standing water
Defogging
Windshield 176
Defrosting 177
Delayed switch-off
Interior lighting 148
Dialing
A number (telephone) 155
Difficulties
While driving see
Problems while driving
With starting 45
Digital speedometer 134
Direction of rotation (tires) 297
Discharged battery
Jump starting 388
Disconnecting
Vehicle battery 386Display
Selecting 143, 144
Display elements
Audio system 184
Displays
Digital speedometer 134
Distronic* 231
Messages 290, 320
Selecting 143
Service indicator 302
Showing malfunctions 138
Distance
Decreasing in Distronic* 237
Increasing in Distronic* 237
Setting in Distronic* 236
Warning function 237
Distance to empty (range)
Calling up 152
Distance warning function* 237
Activating 238
Deactivating 238
Distance warning lamp 237
Intermittent warning sound 237
Symbol in multifunction display 137Distronic* 229, 420
Activated 233
Activating 234
Calling up settings 137, 232
Cleaning system sensor 308
Cruise control lever 233
Deactivated 233
Deactivating 236
Deceleration 232
Decreasing distance 237
Decreasing time interval 236
Displays in the speedometer dial 231
Distance warning function 237
Distance warning lamp 316
Driving hints 238
Fine adjustment 235
Increasing distance 237
Increasing time interval 236
Intermittent signal tone 231
Menu 232
Messages in display 323
Sensor cover 308
Setting a higher speed 234
Setting a lower speed 235
Setting following distance 236
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Page 435 of 464

435 Index
Setting last stored speed
("Resume" function) 235
Setting the current speed 234
Warning and indicator lamps 231
Door control panel 28
Door entry lamps 125
Door handle 28
Door unlock
With Tele Aid 264
Doors
Message in display 331
Opening from inside vehicle 97
Opening from outside 89, 94
Downhill driving
Cruise control 227
Downshifting
Manual shift program mode
(CLK 55 AMG) 165
One-touch gearshifting 158
Steering wheel gearshift
control (CLK 55 AMG) 162
Drinking and driving 273Driving
General instructions 40, 273
Hydroplaning 277
In winter 279
Problems 51
Safety systems 76
Through standing water 280
Traveling abroad 280
With Distronic* 238
Driving instructions 273
Driving off 275
Driving safety systems
ABS 77
BAS 78
ESP 79
Driving system
Parktronic* 241
Driving systems 226
Cruise control 226
Distronic* 229
Driving safety systems 76E
Easy-entry/exit feature 109
Activating 150
Interrupting movement 150
Electrical fuses 394
Electrical system
Technical data 407
Electronic Stability Program see ESP
Emergency call system* 257
Emergency calls
Initiating an emergency call 260
Telephone* 208
With Tele Aid* 258
Emergency operation
(Limp Home Mode) 166
Emergency operations
Closing soft top 355
Closing soft top with
add. locking mechanism 364
Closing soft top without
add. locking mechanism 357
Locking the vehicle 349
Remote door unlock 264
Unlocking the vehicle 348
Emergency tensioning device see ETD
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