2008 MERCEDES-BENZ S550 4MATIC fuel cap

673 Practical hints
Unlocking/locking in an emergency
Mechanically releasing the electronic
parking brake
Depending on vehicle production date your
vehicle may be equipped with a mechani-
cal release device for releasing the elec-
tronic parking brake. It is located behind
the fuel filler flap next to the fuel cap.
1Protective cap
2Release tool
3Pulling
Shift the automatic transmission to P
(
page 399).
Prevent the vehicle from rolling away
by blocking a rear wheel with the wheel
chock. A wheel chock is included with
the vehicle tool kit (
page 668).
Open fuel filler flap.
Remove protective cap1.
Screw release tool2 from vehicle tool
kit clockwise 2 to 3 rotations onto re-
lease cable.
Pull release tool2 in direction of
arrow3.
The electronic parking brake is re-
leased. The red indicator lamp0
(USA only) or! (Canada only) flash-
es. The message “Parking brake See
Oper. Manual” appears on the multi-
function display.
Unscrew release tool2 from release
cable.
Reattach protective cap1.
Store release tool2 in vehicle tool kit.
After it has been unlocked, you can engage
the electronic parking brake again from
the driver’s seat.
Press the electronic parking brake han-
dle (
page 395).
iIf your vehicle is not equipped a mechanical
release device for releasing the electronic park-
ing brake contact Roadside Assistance or an au-
thorized Mercedes-Benz Center.
Warning!G
If you mechanically release the electronic
parking brake, the vehicle may start to move
on its own. Make sure that no one is in front
of or behind the vehicle. Otherwise, an acci-
dent could occur resulting in injury or fatali-
ty. Before releasing the electronic parking
brake, shift the automatic transmission to P
(
page 399) and secure your vehicle in
place using the chock from the vehicle tool
kit.
iIf the electronic parking brake is not re-
leased, pull the release tool again with more
force.

724 Technical data
Fuels, coolants, lubricants, etc.
Capacities
Vehicle components and their respective
lubricants must match. Therefore use only
products tested and approved by
Mercedes-Benz.
Please refer to the Factory Approved
Service Products pamphlet (USA only), or
inquire at an authorized Mercedes-Benz
Center.
Warning!G
Comply with all valid regulations with re-
spect to handling, storing and disposing of
service fluids. Otherwise you could endan-
ger persons or the environment.
Keep service fluids out of the reach of chil-
dren.
For health reasons, you should prevent ser-
vice fluids from coming into direct contact
with your skin or clothing.
If a service fluid is swallowed, contact a phy-
sician immediately.
ModelCapacityFuels, coolants, lubricants, etc.
Engine with oil filterS 550
S 550 4MATIC8.98 US qt. (8.5 l)Approved engine oils
S6009.51 US qt. (9.0 l)
S63 AMG9.25 US qt. (8.75 l)
S65 AMG9.51 US qt. (9.0 l)
Automatic transmissionS 550
S 550 4MATIC10.36 US qt. (9.8 l)MB Automatic Transmission Fluid
S6008.14 US qt. (7.7 l)
S63 AMG9.25 US qt. (8.75 l)
S65 AMG9.2 US qt. (8.7 l)

725 Technical data
Fuels, coolants, lubricants, etc.
ModelCapacityFuels, coolants, lubricants, etc.
Rear axleS 550
S 550 4MATIC1.27 US qt. (1.2 l)Hypoid gear oil SAE 85 W 90
S 6002.11 US qt. (2.0 l)
S 63 AMG1.27 US qt. (1.2 l)Fuchs Titan EG 5010 D
S 65 AMG1.69 US qt. (1.6 l)
Hydraulic system ABC*All models4.2 US qt. (4.0 l)MB ABC Fluid
Power steeringS 550
S 550 4MATICapprox. 1.06 US qt. (1.0 l)MB Power Steering Fluid
(Chevron Texaco PSF 9109)1
1For detailed information, please refer to the Factory Approved Service Products pamphlet (USA only) or contact an authorized Mercedes-Benz Center.
S 600approx. 1.27 US qt. (1.2 l)
S 63 AMGapprox. 1.06 US qt. (1.0 l)
S 65 AMGapprox. 1.27 US qt. (1.2 l)
Front wheel hubsAll modelsapprox. 3.6 oz. (95 g) eachHigh-temperature roller bearing
grease
Brake systemAll modelsapprox. 0.53 US qt. (0.5 l)MB Brake Fluid (DOT 4+)

726 Technical data
Fuels, coolants, lubricants, etc.
ModelCapacityFuels, coolants, lubricants, etc.
Cooling
systemVehicles without rear passen-
ger compartment climate con-
trol*S 550
S 550 4MATIC12.15 US qt. (11.5 l)MB 325.0 Anticorrosion/Antifreeze
Vehicles with rear passenger
compartment climate control*S 550
S 550 4MATIC13.9 US qt. (13.15 l)
S 60014.69 US qt. (13.9 l)
S63 AMG11.83 US qt. (11.2 l)
S65 AMG14.69 US qt. (13.9 l)
Low temperature cooling systemS 6002.75 US qt. (2.6 l)MB 325.0 Anticorrosion/Antifreeze
S65 AMG3.28 US qt. (3.1 l)
Fuel tankAll models23.78 US gal (90.0 l)Premium unleaded gasoline:
Minimum Posted Octane 91
(Avg.of96RON/86MON)
including a reserve ofS 550
S 550 4MATIC2.9 US gal (11.0 l)
S 6002.9 US gal (11.0 l)
S63 AMG3.7 US gal (14.0 l)
S65 AMG3.7 US gal (14.0 l)

727 Technical data
Fuels, coolants, lubricants, etc.
ModelCapacityFuels, coolants, lubricants, etc.
Air conditioning systemAll modelsR-134a refrigerant and special PAG
lubricant oil (never R-12)
Windshield washerAll modelsapprox. 6.87 US qt (6.5 l)MB Windshield Washer Concentrate1
1Use MB Windshield Washer Concentrate “MB SummerFit” and water for temperatures above freezing or MB Windshield Washer Concentrate “MB SummerFit” and
commercially available premixed windshield washer solvent/antifreeze for temperatures below freezing point. Follow suggested mixing ratios (page 733).

731 Technical data
Fuels, 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.

737 Index
B
Backup lamps
Replacing bulbs 679
Bar 576
BAS 68
Batteries, SmartKey
Checking battery condition 340
Replacing 676
Batteries, SmartKey with KEYLESS-GO*
Checking battery condition 340
Replacing 676
Batteries, vehicle 692
Charging 695
Discharged, Jump starting 697
Disconnecting 694
For electrical consumers 692
For starter 692
Message in display 644
Reconnecting 696
Removing 695
Bead 576
Beverage holder see Cup holder
Bluetooth
®
Settings (COMAND) 239Brake assist system (BAS Plus) 69
Brake assist system (BAS) 68
Brake fluid 540, 725, 728
Brake lamp bulbs 679
Brake lamp, high mounted 679
Brake pads
Message in display 632
Brake warning lamp 29
Brakes 528
High-performance brake system
(AMG vehicles only) 529
Warning lamp 29, 599
Break-in period 526
Bulbs, replacing 678
Additional turn signals 679
Brake lamps 679
Fog lamps 679
Front lamps 679
High beam 679
High mounted brake lamp 679
License plate lamps 679
Low beam 679
Parking and standing lamps 679
Rear fog lamp 679
Turn signal lamps 679C
California retail buyers and lessees,
important notice for 15
Can holder see Cup holder
Capacities and recommended
fuel/lubricants 724
Cargo area see Trunk
Cargo tie-down hooks 500
Carpets, Cleaning and care of 594
Catalytic converter 536
CD
Ejecting (COMAND) 117
Loading (COMAND) 115
Menu overview (COMAND) 119
Playback options (COMAND) 123
Selecting a medium (COMAND) 121
Selecting a track (COMAND) 122
CD (COMAND) 112
Central locking
Automatic 342
Locking/unlocking from inside 343
Central locking/unlocking switches 343
Certification label 712
Change of address or ownership 16

743 Index
Fuel 539, 726, 729
Additives 730
Capacity, Fuel tank 726
Filling the tank 538
Fuel filler flap and cap 538
Fuel reserve warning lamp 29, 605
Gauge 29
Premium unleaded gasoline 539,
726, 729
Requirements, Octane rating 729
Fuel cap
Message in display 649
Fuel consumption statistics
Since last reset 268
Since start 268
Fuel filler flap 538
Locking/Unlocking 538
Fuel tank
Capacity 726
Filler flap 538
Fuels, coolants, lubricants etc.
Capacities 724Fuses 704
Fuse box in engine compartment 705
Fuse box in passenger
compartment 706
Fuse boxes in dashboard 706
Fuse chart (vehicle tool kit) 668
Fuse extractor (vehicle tool kit) 668
Replacing 704
Spare fuses (vehicle tool kit) 668
G
Garage door opener 518
Gasoline see Fuel
GAWR 576
Gear range
Automatic transmission 408
Limiting 408
Shifting into optimal 413
Gear selector lever 399
Gearshift pattern 399
Messages in display 617, 622, 624,
625, 667
Position 402
Shifting procedure 402
Transmission position 403Glove box 494
Gloves, Vehicle tool kit 668
GPS
Reception (COMAND) 163
Tele Aid 510
Gross Axle Weight Rating see GAWR
Gross Vehicle Weight Rating see GVWR
Gross Vehicle Weight see GVW
GVW 576
GVWR 577
H
Hands-free microphone 33
Hard plastic trim items, cleaning 594
Hazard warning flasher 377
Head restraints 353
Adjustment 353
Folding back and placing upright rear
head restraints 354
Front seat 353
Luxury active head restraints
(S 600 only) 55
Rear seat 354
Resetting activated luxury active head
restraints (S 600 only) 675