Page 159 of 491

158 Controls in detailControl systemStandard display menu
You can select the functions in the stan-
dard display menu with buttonk 
orj.
The following functions are available:Display digital speedometer
Press buttonj twice.
The current vehicle speed is shown 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 
display.
The following functions are available:Select radio station
Turn on the radio. Refer to separate op-
erating instructions.
Press buttonè orÿ repeatedly 
until you see the currently tuned sta-
tion in the display.
1Waveband setting
2Station frequency
Press buttonk orj repeatedly 
until the desired station is found.
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 digital speedometer 
158
Call up maintenance display 
339
Check tire pressure*
318
Check engine oil level
301
Function
Page
Select radio station
158
Select satellite radio station*
159
Operate CD player
159 
     
        
        Page 299 of 491

298 OperationAt the gas stationWindshield washer system and 
headlamp cleaning system*
For information on refilling the reservoir, 
see “Windshield washer system and head-
lamp cleaning system*” (
page 306).
Brake fluid
For information on brake fluid, see “Fuels, 
coolants, lubricants, etc.” (page 453).Coolant
For normal replenishing, use water (pota-
ble water quality). For more information on 
coolant, see “Coolant level” (
page 303) 
and see “Fuels, coolants, lubricants etc.” 
(
page 450).
Engine oil level
For more information on engine oil level, 
see (page 300).Vehicle lighting
Check function and cleanliness. For more 
information on replacing light bulbs, see 
“Replacing bulbs” (
page 410).
For more information, see “Exterior lamp 
switch” (
page 141).
Tire inflation pressure
For more information on tire inflation pres-
sure, see “Checking tire inflation pressure” 
(
page 318).
!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. Noti-
fy 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 354). 
     
        
        Page 456 of 491

455 Technical data
Fuels, coolants, lubricants etc.
Fuel requirements
Use only premium unleaded gasoline 
meeting ASTM standard D 439:
The octane number (posted at the 
pump) must be 91 “min”. It is an aver-
age of both the Research (R) Octane 
Number 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.
Coolants
The engine coolant is a mixture of water 
and anticorrosion / antifreeze, which pro-
vides:
Corrosion protection
Freeze protection
Boiling protection (by increasing the 
boiling point)
The cooling system was filled at the factory 
with a coolant providing freeze protection 
to approximately -22°F (-30°C) and corro-
sion protection.
If the antifreeze mixture is effective to 
-22°F (-30°C), the boiling point of the cool-
ant in the pressurized cooling system is 
reached at approximately 266°F (130°C).
The coolant solution must be used 
year-round to provide the necessary corro-
sion protection and increase boil-over pro-
tection. Refer to Maintenance Booklet for 
replacement interval. 
     
        
        Page 469 of 491

468 IndexCargo tie-down rings 251
CD player
Operating 159
Center console
Lower part 28
PASS AIR BAG OFF indicator 
lamp 360
Upper part 27
Centigrade
Setting temperature units 165
Central locking
From inside 122
Switch 122
Switching on/off (control 
system) 174
Unlocking from inside 122
Central locking switch 122
Changing
Batteries (SmartKey with 
KEYLESS-GO*) 408, 409
Batteries (SmartKey) 408, 409
SmartKey setting 175
Vehicle level 246
Charging
Vehicle batteries 427CHECK ENGINE malfunction indicator 
lamp 355
Checking
Coolant level 303
Oil level 297, 300
Tire inflation pressure 297
Vehicle lighting 297
Child safety 73
Airbags 64
Infant and child restraint systems 69, 
73
LATCH child seat anchors 83
Child safety switch see Blocking of rear 
window operation 84
Cigarette lighter 266
Cleaning
Headlamps 191
Windshield 53
Wood trims 350
Cleaning tires 309
Clock 168Closing
Glove box 259
Power tilt /sliding sunroof* 225
Side windows 222
Tailgate
Vehicle with KEYLESS-GO* 119, 
121
Windows 221
Closing the tailgate 117, 119, 121
Closing the tailgate from the outside (vehi-
cles without KEYLESS-GO*) 118
Cockpit 22, 459
Cockpit management and data system 
(COMAND) 460
Cold tire inflation pressure 333
Collapsible wheel chock 403
COMAND 460
COMAND* see separate operating instruc-
tions
Combination switch 145
Turn signals 51
Windshield wipers 52
Comfort driving
Transmission program mode 188