352 Technical dataFuels, coolants, lubricants, etc.Engine oils
Engine oils are specifically tested for their 
suitability in our engines. Therefore, only 
use engine oils approved by 
Mercedes-Benz. Information on approved 
engine oils is available in the Factory 
Approved Service Products pamphlet, or at 
your authorized Mercedes-Benz Center.Please follow FSS recommendations for 
scheduled oil changes. Failure to do so 
could result in engine damage not covered 
by the Mercedes-Benz Limited Warranty.
Engine oil additives
Do not blend oil additives with engine oil. 
They may damage the engine.
Damage or malfunctions resulting from 
blending oil additives are not covered by 
the Mercedes-Benz Limited Warranty.Air conditioning refrigerant
R-134a (HFC) refrigerant and special PAG 
lubricating oil is used in the air 
conditioning system.Never use R-12 (CFC) or mineral-based 
lubricating oil. Otherwise damage to the 
system will occur.
Brake fluid
During vehicle operation, the boiling point 
of the brake fluid is continuously reduced 
through the absorption of moisture from 
the atmosphere. Under extremely strenu-
ous operating conditions, this moisture 
content can lead to the formation of 
bubbles in the system, thus reducing the 
system’s efficiency.
Therefore, the brake fluid must be 
replaced every two years, preferably in the 
spring.
Only brake fluid approved by 
Mercedes-Benz is recommended. Your 
authorized Mercedes-Benz Center will 
provide you with additional information.
!Always check the oil filler cap 
(page 255) for important information 
pertaining to the engine oil needing to 
meet a specific Mercedes-Benz specifi-
cation (e.g. MB 229.5). If such informa-
tion is printed on the oil filler cap, only 
use an engine oil from the list of ap-
proved engine oils in the Factory Ap-
proved Service Products pamphlet that 
meets the specification 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. 
362 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 for 
automatically 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 
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
(F
lexible S
ervice S
ystem)
Service indicator in the multifunction 
display that informs the driver when 
the next vehicle maintenance service 
is due.
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.