engine coolant MERCEDES-BENZ S-Class 2008 W221 Comand Manual

769 Technical data
Fuels, coolants, lubricants, etc.
Engine oils
Engine oils are specifically tested for their
suitability in our engines and durability for
our service intervals. Therefore, only use
approved engine oils and oil filters
required for vehicles with Maintenance
System. For a listing of approved engine
oils and oil filters, refer to the Factory
Approved Service Products pamphlet
(USA only), or contact an authorized
Mercedes-Benz Center.
Engine oil additivesAir conditioning refrigerant
R-134a (HFC) refrigerant and special PAG
lubricating oil are used in the air condition-
ing system.
Brake fluid
Only brake fluid approved by
Mercedes-Benz is recommended. Any au-
thorized Mercedes-Benz Center will pro-
vide you with additional information.
!
Using engine oils and oil filters of
specification other than those expressly
required for the Maintenance System, or chang-
ing of oil and oil filter at change intervals longer
than those called for by the Maintenance System
will result in engine or emission control system
damage not covered by the Mercedes-Benz Lim-
ited Warranty.
Please follow Maintenance System recommen-
dations for scheduled oil changes. Failure to do
so will result in engine or emission control sys-
tem damage not covered by the Mercedes-Benz
Limited Warranty.
!
Do not blend oil additives with engine oil.
They may damage the engine. Damage or mal-
functions resulting from blending oil additives
are not covered by the Mercedes-Benz Limited
Warranty.
!
Never use R-12 (CFC) or mineral-based lu-
bricating oil. Otherwise damage to the system
will occur.
Warning!
G
During vehicle operation, the boiling point of
the brake fluid is continuously reduced
through the absorption of moisture from the
atmosphere.
Under extremely strenuous operating condi-
tions, this moisture content can lead to the
formation of bubbles in the system, thus re-
ducing the system’s efficiency.
Therefore, the brake fluid must be replaced
regularly. Refer to your vehicle’s Mainte-
nance Booklet for replacement interval.

770 Technical dataFuels, coolants, lubricants, etc.Premium unleaded gasoline
Fuel requirements
Only use premium unleaded fuel:

The octane number (posted at the
pump) must be 91 min. It is an average
of both the Research Octane Number
(RON) and the Motor Octane Number
(MON): (RON+MON)/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 co-solvents.
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 per-
sonal injury.
Never allow sparks, flame or smoking mate-
rials near gasoline!
Turn off the engine before refueling.
Whenever you are around gasoline, avoid in-
haling fumes and skin or clothing contact,
extinguish all smoking materials.
Direct skin contact with fuels and the inha-
lation of fuel vapors are damaging to your
health.
!
To maintain the engine’s durability and per-
formance, premium unleaded gasoline must be
used. If premium unleaded gasoline is not avail-
able and low octane fuel is used, follow these
precautions:


Have the fuel tank only partially filled with
unleaded regular gasoline and fill up with
premium unleaded gasoline as soon as
possible.


Avoid full throttle driving and abrupt acceler-
ation.


Do not exceed an engine speed of 3 000 rpm
if the vehicle is loaded with a light load such
as two persons and no luggage.


Do not exceed
2/3 of maximum accelerator
pedal position if the vehicle is fully loaded or
operating in mountainous terrain.

771 Technical data
Fuels, coolants, lubricants, etc.
Gasoline additives
A major concern among engine manufac-
turers is carbon build-up caused by gaso-
line. Mercedes-Benz recommends only the
use of quality gasoline containing additives
that prevent the build-up of carbon depos-
its.
After an extended period of using fuels
without such additives, carbon deposits
can build up especially on the intake valves
and in the combustion area, leading to en-
gine performance problems such as:

Warm-up hesitation


Unstable idle


Knocking/pinging


Misfire


Power lossIn areas where carbon deposits may be en-
countered due to lack of availability of gas-
olines which contains these additives,
Mercedes-Benz recommends the use of
additives approved by us for use on
Mercedes-Benz vehicles. Refer to the Fac-
tory Approved Service Products pamphlet
(USA only) or contact an authorized
Mercedes-Benz Center for a listing of ap-
proved product(s). Follow directions on
product label.
Do not blend other fuel additives with fuel.
This only results in unnecessary cost and
may be harmful to the engine operation.
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).
!
Damage or malfunction resulting from poor
fuel quality or from blending additional fuel addi-
tives other than those tested and approved by us
for use on Mercedes-Benz vehicles are not cov-
ered by the Mercedes-Benz Limited Warranty.
!
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 Lim-
ited Warranty.

772 Technical dataFuels, coolants, lubricants, etc.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).
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.Anticorrosion/antifreeze
Your vehicle contains a number of alumi-
num parts. The use of aluminum compo-
nents in motor vehicle engines
necessitates that anticorrosion/antifreeze
coolant used in such engines be specifical-
ly formulated to protect the aluminum
parts. Failure to use such anticorrosion/
antifreeze coolant will result in a signifi-
cantly shortened service life.
Therefore, the following product is strongly
recommended for use in your vehicle:
Mercedes-Benz 325.0 Anticorrosion/
Antifreeze agent.
Before the start of the winter season (or
once a year in hot southern regions), you
should have the anticorrosion/antifreeze
concentration checked. The coolant is also
regularly checked each time you bring your
vehicle to an authorized Mercedes-Benz
Center for service.

774 Technical dataFuels, coolants, lubricants, etc.Windshield washer system and headlamp cleaning system
Both the windshield washer system and
headlamp cleaning systems are supplied
from the windshield washer reservoir.
The windshield washer reservoir has a ca-
pacity of approximately 6.87 US qt (6.5 l).
Refill the reservoir with MB Windshield
Washer Concentrate and water (or con-
centrate and commercially available
premixed windshield washer solvent/
antifreeze, depending on ambient tem-
peratures).Windshield and headlamp washer fluid
mixing ratio
For temperatures above freezing point, use
MB Windshield Washer Concentrate
“MB SummerFit” and water:


1 part “MB SummerFit” to 100 parts
water
(1.34 fl oz [40 ml] “MB SummerFit” to
1 gal [4.0 l] water).
For temperatures below freezing point, use
MB Windshield Washer Concentrate
“MB SummerFit” and commercially avail-
able premixed windshield washer sol-
vent/antifreeze:


1 part “MB SummerFit” to 100 parts
solvent
(1.34 fl oz [40 ml] “MB SummerFit” to
1 gal [4.0 l] solvent).
Warning!
G
Washer solvent/antifreeze is highly flamma-
ble. Do not spill washer solvent/antifreeze
on hot engine parts, because it may ignite
and burn. You could be seriously burned.

781 Index
Setting the audio format
(COMAND) 128
Video (COMAND) 132
E
Easy-entry/exit feature 384
COMAND menu 268
EBP 72
Electrical fuses see Fuses
Electrical outlet see Power outlet
Electrical system, Technical Data 760
Electronic Brake Proportioning see EBP
Electronic parking brake 422
Indicator lamp 29, 630
Messages in display 667
Warning lamp 29, 630
Electronic Stability Program see ESP
®
Electronic traction system 73
Emergency call system 542
Emergency calls, Tele Aid 544
Emergency engine shut-down 744
Emergency operation
(Limp-Home Mode) 443
Emergency operations
Locking the vehicle 708
Releasing from inside 516
Remote door lock 550Remote door unlock 549
Unlocking the trunk 709
Unlocking the vehicle 708
Emergency tensioning device see ETD
Emergency, In case of
Battery, Jump starting 734
First aid kit 705
Flat tire 723
Fuses 741
Roadside Assistance 15
Roadside Assistance (Tele Aid) 546
Towing the vehicle 737
Emission control 568
Emission control information label 749
Emission control system warranties 14
Engine
Belt layout 750
Cleaning 617
Compartment 573
Coolant 579, 767, 771
Malfunction indicator lamp 29, 632
Number 748, 749
Oil 578, 765, 769
Oils 575
Residual heat and ventilation 509
Starting 416Technical data 751
Turning off 424
Engine coolant see Coolant
Engine oil 575
Adding 578
Additives 769
Checking level 575
Checking level (Dipstick) 577
Checking level (Instrument cluster
control system) 575
Consumption 575
Dipstick 577
Filler neck 577, 578
Messages in display 576, 694
Recommended engine oils and
oil filters 765
ESP
®Four wheel electronic traction system
with ESP
®
76
ESP
®
72
Messages in display 662, 673
Warning lamp 29, 629, 634
ETD 55
Safety guidelines 44

782 IndexExterior lighting
Delayed switch-off (COMAND) 264
Locator lighting (COMAND) 265
Exterior rear view mirrors
Adjusting 388
Auto-dimming on the
driver’s side 390
Fold in automatically when locking
(COMAND) 266
Lower mirror when reversing
(COMAND) 266
Power folding 389F
Favorite button 263
First aid kit 705
Flat tire 723
Jacking up the vehicle 724
Lowering the vehicle 727
Mounting the spare wheel 723
Preparing the vehicle 723
Floormats* 538
Fluids
Automatic transmission fluid 765
Brake fluid 766, 769
Capacities 764
Engine coolant 579, 767, 771
Engine oil 578, 765, 769
Power steering fluid 766
Windshield washer system and head-
lamp cleaning system 768, 774
Fog lamps
Messages in display 690
Replacing bulbs 715
Four wheel electronic traction system with
ESP
® see 4MATIC
4MATIC 76
Front air bags 46Front lamps
Replacing bulbs 715, 717
Front lamps see headlamps
Front passenger front air bag 46
Messages in display 649
Front passenger front air bag off
indicator lamp 51, 640
Fuel 571, 767, 770
Additives 771
Capacity, Fuel tank 767
Filling the tank 570
Fuel filler flap and cap 570
Fuel reserve warning lamp 29
Gauge 29
Premium unleaded gasoline 571,
767, 770
Requirements, Octane rating 770
Fuel cap
Message in display 683
Fuel consumption statistics
Since last reset 291
Since start 291
Fuel filler flap 570
Locking/Unlocking 570

783 Index
Fuel tank
Capacity 767
Filler flap 570
Fuels, coolants, lubricants etc.
Capacities 764
Fuses 741
Fuse box in engine compartment 742
Fuse box in passenger
compartment 743
Fuse boxes in dashboard 743
Fuse chart (vehicle tool kit) 705
Replacing 741G
Garage door opener 551
Gasoline see Fuel
GAWR 607
Gear range
Automatic transmission 435
Limiting 435
Shifting into optimal 440
Gear selector lever 426
Gearshift pattern 426
Messages in display 648, 653, 657,
659, 704
Position 429
Shifting procedure 429
Transmission position 430
Glove box 526
Gloves, Vehicle tool kit 705
GPS
Reception (COMAND) 192
Tele Aid 543
Gross Axle Weight Rating see GAWR
Gross Vehicle Weight Rating see GVWR
Gross Vehicle Weight see GVW
GVW 607
GVWR 607H
Hands-free microphone 33
Hard plastic trim items, cleaning 624
Hazard warning flasher 405
Head restraints 379
Adjustment 379
Folding back and placing upright rear
head restraints 380
Front seat 379
Luxury active head restraints
(S 600 only) 56
Rear seat 380
Resetting activated luxury active head
restraints (S 600 only) 710
Headlamp cleaning system 403, 580
Washer fluid 768, 774
Headlamps
Automatic headlamp mode 306, 400
Cleaning lenses 619
Cleaning system 580
Low beam 400
Manual headlamp mode 306
Messages in display 687
Refilling washer fluid 581
Headliner and shelf below rear window,
Cleaning and care of 624

787 Index
M
Maintenance 15, 612
Automatic Call (Tele Aid) 550
Calling up service indicator
display 613
Clearing service indicator
message 612
Maintenance System 612
Resetting service indicator 614
Service indicator message 612
Service term exceeded 613
Maintenance System 612
Manual headlamp mode 400
Manual shift program (AMG vehicles only)
Deactivating 442
MAXCOOL
Maximum cooling 506
Maximum load rating, Tires 607
Maximum loaded vehicle weight 591,
607
Maximum tire inflation pressure 603,
607
Maximum tire load rating 603
Memory function 392
Messages in display see
Multifunction display messagesMicrophone, Hands-free 33
Minispare wheel 707, 723, 759
Mirrors
Activating exterior rear view mirror
parking position 391
Adjusting 388
Auto-dimming for rear view
mirrors 390
Exterior rear view mirrors 388
Interior rear view mirror 388
Mobile phone see Telephone*
Modifications and alterations,
Operating safety 19
MON 571, 767
MP3
Menu overview (COMAND) 123
Operation (COMAND) 124
Playback options (COMAND) 128
Selecting a folder (COMAND) 127
Selecting a medium (COMAND) 126
Selecting a track (COMAND) 126
MP3 (COMAND) 116
Multicontour rear seats* 383
Multicontour seats*, front
Adjusting (COMAND) 283
Multifunction display 287Multifunction display messages
ABC* 660
ABS 662
Airmatic 676
Batteries, vehicle 678
Blind Spot Assist* 654
Brake fluid 664
Brake pads 666
Coolant 680
Coolant level 679
Cruise control 645
DISTRONIC Plus* 646
Doors 682
EBP (Electronic Brake
Proportioning) 665
Electronic parking brake 667
Engine oil 575, 694
ESP
®
662, 673
Fog lamps 690
Front passenger front air bag 649
Fuel cap 683
Gear selector lever 648, 653, 657,
659, 704
Headlamps 687
Hood 683
Key, SmartKey 685