2007 MERCEDES-BENZ ML320CDI coolant level

452 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause/consequence
Possible solution
B
Top up Coolant
See Oper. Manual
The coolant level is too low.

Add coolant (
page 362).

If you have to add coolant frequently,
have the cooling system checked by an
authorized Mercedes-Benz Light Truck
Center.
Warning!
G
Do not spill antifreeze on hot engine parts.
Antifreeze contains ethylene glycol which
may burn if it comes into contact with hot
engine parts. You could be seriously burned.Warning!
G
In order to avoid potentially serious burns:

Use extreme caution when opening the
hood if there are any signs of steam or
coolant leaking from the cooling system,
or if the coolant temperature gauge indi-
cates that the coolant is overheated.


Do not remove pressure cap on coolant
reservoir if coolant temperature is
above 158°F (70°C). Allow engine to
cool down before removing cap. The
coolant reservoir contains hot fluid and
is under pressure.


Using a rag, slowly open the cap approx-
imately
1/2 turn to relieve excess pres-
sure. If opened immediately, scalding
hot fluid and steam will be blown out un-
der pressure.


Do not spill antifreeze on hot engine
parts. Antifreeze contains ethylene gly-
col which may burn if it comes into con-
tact with hot engine parts.
!
Do not ignore the low engine coolant level
warning. Extended driving with the message and
symbol displayed may cause serious engine
damage not covered by the Mercedes-Benz
Limited Warranty.
Do not drive without sufficient amount of coolant
in the cooling system. The engine will overheat
causing major engine damage.

549 Technical data
Fuels, coolants, lubricants
Coolants
The engine coolant is a mixture of water
and anticorrosion/antifreeze, which
provides:

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
-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 corrosion
protection and increase boil-over protec-
tion. Refer to Maintenance Booklet for
replacement 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 (see
Factory Approved Service Products
pamphlet) are used to renew the coolant
concentration or bring it back up to the
proper level.To provide important corrosion protection,
the solution must be at least 45% anticor-
rosion/antifreeze (equivalent to freeze
protection to approx. - 22°F [-30°C]). If
you use a solution that is more than 55%
anticorrosion/antifreeze (freeze protec-
tion to approx. - 49°F [-45°C]), the engine
temperature will increase due to the lower
heat transfer capability of the solution.
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 instructions.
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 Light
Truck 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.

556 IndexClimate control 206
Air conditioning, Cooling 216
Air distribution, Front 212
Air distribution, Rear 219
Air recirculation mode 214
Air vents, Front 212
Air volume 212
Control panel*, Rear 217
Control panel, Front 208
Deactivating system 210
Defogging 213
Defrosting 213
Rear window defroster 205
Residual engine heat (REST) 216
Clock 27, 169
Setting time 169
Cloth upholstery,
Cleaning and care of 412
Cockpit 24
Cockpit Management and Data System
see COMAND system
Cold tire inflation pressure 395
Collapsible tire 538
Collapsible tire (ML 63 AMG only) 474
Collapsible wheel chock 472COMAND system see separate operating
instructions
Combination switch 59, 60, 62, 140
Compass 321
Adjustment 174
Calibration 175
Calling up the compass 321
Control and operation of radio
transmitters 348
Control system 147
Multifunction display 147
Multifunction steering wheel 148
Resetting to factory default 165
Control system menus 147
AIRMATIC*/Compass 162
AMG menu 156
Audio 159
Distronic* 162
Nav* 161
Settings 164
Standard display 154
Tel* 182
Trip computer 180
Vehicle configuration 178
Vehicle status message memory 163Control system submenus 151, 153, 166
Comfort* 177
Instrument cluster 167, 168
Lighting 171
Time/Date 169
Vehicle 174
Coolant 362, 549
Anticorrosion/antifreeze
mixing ratio and quantity 550
Capacities 543
Checking coolant level 354, 362
Messages in the multifunction
display 450, 452
Temperature 350
Temperature display 154
Corner-illuminating front fog lamps* 140
Messages in the
multifunction display 458
Replacing bulbs 488
Crossing obstacles 339
Cruise control 245
Activating 247
Messages in the
multifunction display 431

559 Index
Emergency operations
Remote door unlock, Tele Aid* 315
Unlocking/opening the tailgate 476
Emergency Tensioning Device see ETD
Emergency, In case of
Battery, Jump starting 515
Engine shut-down 525
First aid kit 469
Flat tire 497
Fuses 522
Hazard warning flasher 142
Instrument cluster, Indicator
lamps 414, 415, 416, 417, 418,
419, 420, 421, 422, 423, 424
Roadside Assistance 12, 312
Towing the vehicle 518
Emission control 350
Information label 531
System warranties 10
Vacuum line routing diagram
label 531Engine
Belt layout (ML 320 CDI) 532
Belt layout (ML 350) 532
Belt layout (ML 500) 532
Belt layout (ML 63 AMG) 533
Block heater (Canada only) 400
Break-in recommendations 358
Cleaning 406
Compartment 356
Emergency engine shut-down 525
Malfunction indicator lamp 29, 449
Maximum engine speed 146, 534,
535
Messages in the
multifunction display 449
Number 531
Starting 54
Starting with KEYLESS-GO* 55
Starting with the SmartKey 55
Tachometer 29, 146
Technical data 534
Turning off with KEYLESS-GO* 67
Turning off with the SmartKey 67Engine coolant see Coolant
Engine oil 358, 546
Adding 361, 546
Additives 546
Changing 361, 546
Checking level 358
Checking level with the
control system (ML 500 only) 358
Checking with the oil dipstick
(except ML 500) 360
Consumption 358
Filler neck (ML 350, ML 320 CDI) 361
Filler neck (ML 500, ML 63 AMG) 361
Messages in display 359, 453
Messages in the
multifunction display 453
Recommended engine oils
and oil filters 546
Engine oil level 358
ESP
®
27, 98
Four wheel electronic traction system
with ESP
®
98
Messages in the
multifunction display 436, 437
Off-road-ESP®
101
Warning lamp 27, 419, 420