Page 458 of 498

456 Technical termsCOMAND
(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.Engine number
The number set by the manufacturer 
and placed on the cylinder block to 
uniquely identify each engine pro-
duced.
Engine oil viscosity
Measurement for the inner friction (vis-
cosity) of the oil at different tempera-
tures. The higher the temperature an 
oil can tolerate without becoming thin, 
or the lower the temperature it can tol-
erate without becoming viscous, the 
better the viscosity.
ESP
(E
lectronic S
tability Pr
ogram)
Improves vehicle handling and direc-
tional stability.
ETD
(E
mergency T
ensioning D
evice)
Device which deploys in certain frontal 
and rear collisions exceeding the sys-
tem's threshold to tighten the seat 
belts. 
->SRSFSS (Canada vehicles)
(F
lexible S
ervice S
ystem)
Maintenance service indicator in the 
multifunction display that informs the 
driver when the next vehicle mainte-
nance service is due. FSS evaluates en-
gine temperature, oil level, vehicle 
speed, engine speed, distance driven 
and the time elapsed since your last 
maintenance service, and calls for the 
next maintenance service accordingly.
Gear range
Number of gears which are available to 
the automatic transmission for shifting. 
The automatic gear shifting process 
can be adapted to specific operating 
conditions using the gear selector le-
ver.
GPS
(G
lobal P
ositioning S
ystem)
Satellite-based system for relaying 
geographic location information to and 
from vehicles equipped with special re-
ceivers. Employs CD digital maps for 
navigation. 
     
        
        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 479 of 498

477 Index
Parking brake 374
SmartKey with KEYLESS-GO* 381
Steering gear oil level 387
Sunroof* 388
Symbol messages 373–388
Tele Aid 386
Telephone* 388
Text messages 364–372
Trunk 388
Washer fluid 388
Multifunction 
steering wheel 26, 138, 458
Buttons 138N
Navigation system
Operating 144
See separate COMAND* 
operating instructions
Night security illumination 127
Normal occupant weight 339
Nubuck leather upholstery (CLK 55 AMG)
Cleaning 352
O
Occupant Classification System see OCS
Occupant distribution 339
Occupant safety 60
Air bags 61
Children and air bags 62
Children in the vehicle 70
Fastening the seat belts 43
Front passenger front 
air bag off indicator lamp 77, 360
Infant and child restraint systems 70
LATCH child seat anchors 80
OCS 73
Seat belts 43, 64OCS 73, 458
Self-test 78
Odometer, main 25
Oil
Adding 312
Checking level 310
Consumption 309
Filler cap 312
Filler neck 312
Viscosity 456
Oil level
Checking 307
One-touch gearshifting 167
Canceling gear range limit 167
Downshifting 167
Upshifting 167