400 Technical termsCOMAND*
(C
ockpit M
anagement and D
ata 
System)
Information and operating center for 
vehicle sound and communications 
systems, including the radio and the 
navigation system, as well as other 
optional equipment (CD changer*, 
telephone*, 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 
adjust settings.
Cruise control
Driving convenience system that 
automatically maintains 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 
produced.
Engine oil viscosity
Measurement for the inner friction 
(viscosity) of the oil at different temper-
atures. The higher the temperature an 
oil can tolerate without becoming thin, 
or the lower the temperature it can 
tolerate without becoming viscous, the 
better the viscosity.
ESP
(E
lectronic S
tability P
rogram)
Improves vehicle handling and 
directional stability.
ETD
(E
mergency T
ensioning D
evice)
Device which deploys in certain frontal 
and rear collisions exceeding the 
system'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 
engine 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 
lever.
GPS
(G
lobal P
ositioning S
ystem)
Satellite-based system for relaying 
geographic location information to and 
from vehicles equipped with special 
receivers. Employs CD digital maps for 
navigation. 
414 Index
Releasing trunk lid from inside 95
Remote door unlock 255
Unlocking the vehicle 337
Emergency Tensioning Device see ETD
Emission control 273
Emission control information label 376
Ending
A call (telephone*) 152
Engine
Compartment 278
Starting with automatic 
transmission* 47
Starting with manual 
transmission 46
Starting with the SmartKey, 
automatic transmission* 47
Starting with the SmartKey, 
manual transmission 46
Technical data 378
Turning off with the SmartKey 56
Engine cleaning 297Engine compartment 278
Fuse box in 370
Hood 278
Engine malfunction 
indicator lamp 25, 304
Engine number 376, 400
Engine oil 279
Adding 281
Additives 390
Checking level 277, 280
Consumption 279
Display messages 280, 320–321
Filler neck, 
C 230 Kompressor 
(all models) 282
Filler neck, 
C 240 (all models), 
C 320 (all models), 
C 55 AMG 282
Messages in display 280, 320–321
Viscosity 400Engine oil level
Checking 277, 280
Engine oils 390
ESP 79, 400
Four wheel electronic traction 
system with ESP 82
Messages in display 312–313
Switching off 80
Switching on 81
Warning lamp 25, 306
ETD 67, 400
Safety guidelines 62
Ethanol fuel
At the gas station 275
Requirements 392
Switching fuels 393
Exterior lamp switch 49, 109
Exterior lamps
Delayed shut-off 143
Exterior rear view mirrors
Adjusting 41
Parking position* for 148