Page 419 of 522

418 Practical hintsWhat to do if …When the message
Check oil level at
next refueling
appears while the engine
is running and at operating temperature,
the engine oil level has dropped to approx-
imately the minimum level.
When this occurs, the warning will first
come on intermittently and then stay on if
the oil level drops further.
Visually check for oil leaks. If no obvious oil
leaks are noted, drive to the nearest ser-
vice station where the engine oil should be
topped to the required level with an ap-
proved engine oil.For information on approved engine oils,
refer to the Factory Approved Service
Products pamphlet (USA only) or contact
an authorized Mercedes-Benz Center.
Display symbol
Display message
Possible cause/consequence
Possible solution
:
Check oil level
at next refueling
The engine oil has dropped to a critical
level.
Check the engine oil level
(page 328) and add oil as required
(page 329).
If you must add engine oil frequently,
have the engine checked for possible
leaks.
!
The engine oil level warnings should not be
ignored. Extended driving with the symbol dis-
played could result in serious engine damage
that is not covered by the Mercedes-Benz
Limited Warranty.
Page 499 of 522

498 Technical dataFuels, coolants, lubricants 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 -35°F (-37°C) and corro-
sion protection.
If the antifreeze mixture is effective to
-35°F (-37°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 corrosion
protection and increase boil-over protec-
tion. Refer to Maintenance Booklet for re-
placement interval.
Coolant system design and coolant used
determine the replacement interval. The
replacement interval published in the
Maintenance Booklet is only applicable if
MB 325.0 Anticorrosion/Antifreeze solu-
tion or other Mercedes-Benz approved
products of equal specification are used to
renew the coolant concentration or bring it
back up to the proper level.
For information on other Mercedes-Benz
approved products of equal specification,
refer to the Factory Approved Service
Products pamphlet (USA only) or contact
an authorized Mercedes-Benz Center.
To provide important corrosion protection,
the solution must be at least 50% anticor-
rosion/antifreeze (equivalent to freeze
protection to approximately -35°F
[-37°C]). If you use a solution that is more than 55%
anticorrosion/antifreeze (freeze protec-
tion to approximately -49°F [-45°C]), the
engine temperature will increase due to
the lower heat transfer capability of the so-
lution. Therefore, do not use more than
this amount of anticorrosion/antifreeze.
If the coolant level is low, water and
MB 325.0 Anticorrosion/Antifreeze
should be used to bring it up to the proper
level (have cooling system checked for
signs of leakage). Please make sure the
mixture is in accordance with label instruc-
tions.
The water in the cooling system must meet
minimum requirements, which are usually
satisfied by normal drinking water. If you
are not sure about the water quality, con-
sult an authorized Mercedes-Benz Center.
!
Add premixed coolant solution only. Adding
water and MB 325.0 Anticorrosion/Antifreeze
separately from each other, could cause engine
damage not covered by the Mercedes-Benz
Limited Warranty.
Page 504 of 522

503 Index
CD player 162
Center console
Lower part 30
PASS AIR BAG OFF indicator
lamp 393
Upper part 29
Central locking
Automatic 127, 176
Locking/unlocking from inside 127
Central locking switch 127
Certification label 476
Checking
Oil level 327
Checking tire pressure electronically with
the Advanced Tire Pressure Monitoring
System (Advanced TPMS)*,
(Canada only) 345
Children in the vehicle 88
Air bags 71
Blocking of rear window operation 95
Indicator lamp, front passenger front
air bag 81
Infant and child restraint systems 89
LATCH-type child seat anchors 94
Cigarette lighter 288Climate control system
4-zone automatic climate
control 220
Air conditioning refrigerant 495
Air conditioning, Cooling 217, 233
Air distribution 211, 228
Air recirculation mode 214, 231
Air volume 212, 229
Automatic mode 209, 226
Control panel, Rear 219, 235
Deactivating system 209, 225
Dual-zone automatic climate
control 204
Front defroster 212, 229
Maximum cooling MAX COOL 214,
230
Rear climate control 235
Residual engine heat (REST) 218,
234
Clock 27, 171
Setting time 172
Cockpit 24
Cold tire inflation pressure 360
Collapsible tire 487
Collapsible wheel chock 434COMAND see separate COMAND operat-
ing instructions
Combination filter with pollutant-sensitive
air-recirculation mode 233
Combination switch 57, 141
Control system 151
Multifunction display 151
Multifunction steering wheel 152
Resetting to factory settings 166
Control system menus 154
AMG 157
AUDIO 161
Distronic* 163
NAV* 163
Settings 166
Standard display 157
TEL* 181
Trip computer 179
Vehicle status message memory 164
Control system submenus 153
Convenience 178
Instrument cluster 169
Lighting 173
Time/Date 171
Vehicle 176
Page 507 of 522

506 IndexEngine
Belt layout 478
Block heater* (Canada only) 365
Brake-in recommendations 308
Cleaning 371
Compartment 325
Malfunction indicator lamp 384, 385,
414
Maximum engine speed 479
Message in the display 384, 385,
414
Number 477
Starting 52
Starting with KEYLESS-GO* 53
Starting with the SmartKey 53
Tachometer 27
Technical data 479
Turning off with KEYLESS-GO* 64
Turning off with the SmartKey 63
Engine compartment
Hood 325
Engine coolant see Coolant
Engine malfunction indicator lamp 27,
385, 414Engine oil
Adding 329
Additives 495
Changing 329
Checking level 328
Consumption 327
Filler neck 329
Messages in display 418
Oil dipstick 328
Recommended engine oils and oil
filter 495
Engine oil level 324
ESP
®
100
Four wheel electronic traction system
with ESP
®
105
Messages in display 398, 413
Warning lamp 381, 382
ETD
Safety guidelines 72
Exterior lamp switch 137
Exterior rear view mirrors 47
Parking position 200
Exterior view 22F
Filler neck, Engine oil 329
First aid kit 432
Flat tire 452
Lowering the vehicle 458
Mounting the spare wheel 452, 455
Preparing the vehicle 452
Spare wheel 452
Flexible Service System see FSS
Floormats 290
Fluids
Automatic transmission fluid 492
Brake fluid 493
Capacities 491
Engine coolant 493
Engine oil 491
Power steering fluid 493
Windshield washer and headlamp
cleaning system 494
Fog lamps 140
Messages in display 422, 423, 424,
425
Replacing bulbs 445
Four wheel electronic traction system with
ESP
® see 4MATIC
4MATIC 105