Page 143 of 456

142 Controls in detailControl systemStandard display menu
In the standard display, the trip odometer 
and main odometer are shown in the mul-
tifunction display. 
1Trip odometer
2Main odometer
If you see another display, press 
buttonè orÿ until the standard 
display appears.
Press buttonk orj repeatedly 
to select the functions in the standard 
display menu.
The following functions are available:
Display digital speedometer
Press button j or k repeatedly 
until the until digital speedometer ap-
pears in the multifunction display.
AUDIO menu
The functions in the 
AUDIO
 menu operate 
the audio equipment which you currently 
have turned on.
If no audio equipment is currently turned 
on, the message 
AUDIO OFF
 is shown in the 
multifunction display.
The following functions are available:
iThe headings used in the menus table 
are designed to facilitate navigation 
within the system and are not neces-
sarily identical to those shown in the 
control system displays.
The first function displayed in each 
menu will automatically show you 
which part of the system you are in.
Function
Page
Call up maintenance service dis-
play
316
Check tire inflation pressure*
294
Check engine oil level
275
Call up digital speedometer 
142
Function
Page
Select radio station
143
Select satellite radio* station 
(USA only)
143
Select CD track
144
Select MP3-CD track
144 
     
        
        Page 273 of 456

272 OperationAt the gas stationWindshield washer system and head-
lamp cleaning system
For more information on refilling the wash-
er reservoir, see “Windshield washer sys-
tem and headlamp cleaning system” 
(page 282).
Coolant
For more information, see “Coolant level” 
(page 280) and “Coolants” 
(page 422).Brake fluid
For more information on brake fluid, see 
“Brake fluid” (
page 420).
Engine oil level
For more information on engine oil, see 
“Engine oil” (
page 274).Vehicle lighting
Check function and cleanliness. For more 
information on replacing light bulbs, see 
“Replacing bulbs” (
page 378).
For more information, see “Exterior lamp 
switch” (
page 125).
Tire inflation pressure
For information on tire inflation pressure, 
see “Checking tire inflation pressure” 
(
page 294).
!If you find that the brake fluid in the 
brake fluid reservoir has fallen to the 
minimum mark or below, have the 
brake system checked for brake pad 
thickness and leaks immediately. 
Notify an authorized Mercedes-Benz 
Center immediately. Do not add brake 
fluid as this will not solve the problem. 
For more information, see “Practical 
hints” (
page 329). 
     
        
        Page 325 of 456

324 OperationVehicle careLight alloy wheels
If possible, clean wheels once a week.
Use Mercedes-Benz approved Wheel 
Care, a soft bristle brush and a strong 
spray of water for cleaning the light al-
loy wheels.
Plastic and rubber parts
Use a gentle dishwashing detergent or 
mild detergent for delicate fabrics as a 
washing solution.Instrument cluster and cup holders
Use a gentle dishwashing detergent or 
mild detergent for delicate fabrics as a 
washing solution.
Wipe with a cloth moistened in a luke-
warm solution.
Hard plastic trim items
Use Mercedes-Benz approved Interior 
Care, a soft, lint-free cloth and apply 
with light pressure.
Steering wheel and gear selector lever
Wipe with a damp cloth and dry thor-
oughly or clean with Mercedes-Benz 
approved Leather Care.
!Only use acid-free cleaning materials. 
Acid may cause corrosion or damage 
the clear coat.!The vehicle should not be parked for an 
extended period of time immediately 
after it has been cleaned, especially not 
after the wheel rims have been cleaned 
with wheel rim cleaner. Wheel rim 
cleaners can lead to increased corro-
sion of the brake disks and brake pads. 
Therefore, the vehicle’s brake system 
should always be warmed-up before it 
is parked after cleaning. To do so, 
please drive your vehicle for several 
minutes to allow the brakes to dry.
When applying Mercedes-Benz ap-
proved Tire Care and Mercedes-Benz 
approved Wheel Care products, take 
care not to spray them on the brake 
disks. !Do not use oil or wax on these parts.
!To prevent scratches, do not use scour-
ing agents.!To prevent scratches, do not use scour-
ing agents. 
     
        
        Page 422 of 456

421 Technical data
Fuels, coolants, lubricants, etc.
Premium unleaded gasoline
Fuel requirements
Use only premium unleaded fuel:
The octane number (posted at the 
pump) must be 91 min. It is an average 
of both the Research (R) octane num-
ber and the Motor (M) octane number: 
(R+M)/2). This is also known as the 
ANTI-KNOCK INDEX.
Unleaded gasoline containing oxygenates 
such as ethanol, IPA, IBA and TBA can be 
used provided the ratio of any one of these 
oxygenates to gasoline does not exceed 
10%; MTBE must not exceed 15%.
The ratio of methanol to gasoline must not 
exceed 3% plus additional cosolvents.
Using mixtures of ethanol and methanol is 
not allowed. Gasohol, which contains 
10% ethanol and 90% unleaded gasoline, 
can be used. 
These blends must also meet all other fuel 
requirements, such as resistance to spark 
knock, boiling range, vapor pressure, etc.
Warning!
G
Gasoline is highly flammable and poisonous. 
It burns violently and can cause serious 
injury. Whenever you are around gasoline, 
avoid inhaling fumes and skin contact, extin-
guish all smoking materials. Never allow 
sparks, flame or smoking materials near 
gasoline!
!To maintain the engine’s durability and 
performance, premium unleaded gaso-
line must be used. If premium unleaded 
is not available and low octane fuel is 
used, follow these precautions:
Have the fuel tank only partially 
filled with unleaded regular and fill 
up with premium unleaded as soon 
as possible.
Avoid full throttle driving and abrupt 
acceleration.
Do not exceed an engine speed of 
3000 rpm if the vehicle is loaded 
with a light load such as two per-
sons and no luggage.
Do not exceed 
2/3 of maximum ac-
celerator pedal position if the vehi-
cle is fully loaded or operating in 
mountainous terrain. 
     
        
        Page 429 of 456

428 Technical termsCAN 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.
Cold tire inflation pressure
(
page 309)
COMAND
(Cockpit M
anagement and D
ata 
System)
Information and operating center for 
vehicle sound and communications 
systems, including the radio and navi-
gation 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 ad-
just settings.
Cruise control
Driving convenience system that auto-
matically maintains the vehicle speed 
set by the driver.
Curb weight
(
page 309)
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.
DOT
(Department o
f Transportation)
(
page 309)
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.