trans mission MERCEDES-BENZ S550 2007 W221 Service Manual

482 OperationDriving instructions
Tires
Treadwear indicators (TWI) are required by
law. These indicators are located in six
places on the tread circumference and be-
come visible at a tread depth of approxi-
mately
1/16
in (1.6 mm), at which point
the tire is considered worn and should be
replaced.The treadwear indicator appears as a solid
band across the tread.
Specified tire inflation pressures must be
maintained. This applies particularly if the
tires are subject to extreme operating con-
ditions (e.g. high speeds, heavy loads, high
ambient temperatures).


Turn the SmartKey to starter switch po-
sition 0 and remove the SmartKey from
the starter switch, or press the
KEYLESS-GO* start/stop button
(page 317).


Take the SmartKey or the SmartKey with
KEYLESS-GO
* with you and lock the
vehicle when leaving.
!
Set the parking brake whenever parking or
leaving the vehicle. In addition, shift the auto-
matic transmission to P.
When parking on hills, always turn front wheels
towards the road curb.
Warning!
G
If you feel a sudden significant vibration or
ride disturbance, or you suspect that possi-
ble damage to your vehicle has occurred,
you should turn on the hazard warning flash-
ers, carefully slow down, and drive with cau-
tio n to an a rea whic h is a s afe d ista nc e fro m
the road.
Inspect the tires and the vehicle underbody
for possible damage. If the vehicle or tires
appear unsafe, have the vehicle towed to
the nearest Mercedes-Benz Center or tire
dealer for repairs.
Warning!
G
Although the applicable federal motor vehi-
cle safety laws consider a tire to be worn
when the treadwear indicators (TWI) be-
come visible at approximately
1/16 in
(1.6 mm), we recommend that you do not al-
low your tires to wear down to that level. As
tread depth approaches
1/8 in (3 mm), the
adhesion properties on a wet road are
sharply reduced.
Depending upon the weather and/or road
surface (conditions), the tire traction varies
widely.


485 Operation
Driving instructions
Road salts and chemicals can adversely af-
fect braking efficiency. Increased pedal
force may become necessary to produce
the normal braking effect.
Depressing the brake pedal periodically
when traveling at length on salt-strewn
roads can bring road-salt impaired braking
efficiency back to normal.
If the vehicle is parked after being driven
on salt-treated roads, the braking efficien-
cy should be tested as soon as possible af-
ter driving is resumed.
For more information on winter driving, see
“Winter driving” (
page 530).
Standing water
Warning!
G
Make sure not to endanger any other road
users when carrying out these braking ma-
neuvers.
Warning!
G
If the vehicle becomes stuck in snow, make
sure that snow is kept clear of the exhaust
pipe and from around the vehicle with the
engine running. Otherwise, deadly carbon
monoxide (CO) gases may enter vehicle in-
terior resulting in unconsciousness and
death.
To assure sufficient fresh air ventilation,
open a window slightly on the side of the ve-
hicle not facing the wind.Warning!
G
The outside temperature indicator is not de-
signed to serve as an ice-warning device and
is therefore unsuitable for that purpose. In-
dicated temperatures just above the freez-
ing point do not guarantee that the road
surface is free of ice.
!
Do not drive through flooded areas or water
of unknown depth. Before driving through water,
determine its depth. Never accelerate before
driving into water. The bow wave could force wa-
ter into the engine and auxiliary equipment, thus
damaging them.
If you must drive through standing water, drive
slowly to prevent water from entering the pas-
senger compartment or the engine compart-
ment. Water in these areas could cause damage
to electrical components or wiring of the engine
or transmission, or could result in water being in-
gested by the engine through the air intake caus-
ing severe internal engine damage. Any such
damage is not covered by the Mercedes-Benz
Limited Warranty.

489 Operation
At the gas station
At the gas station
RefuelingThe fuel filler flap is located on the
right-hand side of the vehicle towards the
rear. Locking and unlocking the vehicle au-
tomatically locks and unlocks the fuel filler
flap.
1To open fuel filler flap
2To insert fuel filler cap
3Supplemental tire inflation pressure
information (
page 510)
4To insert fuel filler cap

Turn off the engine (
page 366).

Shift the automatic transmission to P
(page 367).

Remove the SmartKey from the starter
switch.
Vehicles with SmartKey with
KEYLESS-GO*:
Turn off the engine by pressing the
KEYLESS-GO* button once
(page 366).

Open the driver’s door (this puts
the starter switch in position0,
same as with the SmartKey re-
moved from the starter switch). The
driver’s door then can be closed
again.

Open the fuel filler flap by pushing at
the point indicated by the arrow 1.
The fuel filler flap springs open.

Turn the fuel cap counterclockwise and
hold on to it until possible pressure is
released.
Warning!
G
Gasoline is highly flammable and poisonous.
It burns violently and can cause serious
injury. Never allow sparks, flame or smoking
materials near gasoline!
Do not allow fuel to come into contact with
skin or clothing. Direct skin contact with fu-
els and the inhalation of fuel vapors are
damaging to your health.
Switch off the engine before refueling.


497 Operation
Engine compartment
Example illustration from S 5501Filler cap
Unscrew filler cap1 from filler neck.

Add engine oil as required. Be careful
not to overfill with oil.
Be careful not to spill any oil when adding.
Avoid environmental damage caused by oil
entering the ground or water.

Screw filler cap1 back on filler neck.For more information on engine, see the
“Technical data” section (
page 661) and
(
page 663).
Transmission fluid level
The transmission fluid level does not need
to be checked. If you notice transmission
fluid loss or gear shifting malfunctions,
have an authorized Mercedes-Benz Center
check the automatic transmission.Active Body Control* (ABC*) fluid level
Regular fluid level check is not required. If
you notice fluid leaks or malfunction mes-
sages in the multifunction display, have an
authorized Mercedes-Benz Center check
the ABC-system.
Coolant level
The engine coolant is a mixture of water
and anticorrosion/antifreeze. To check
the coolant level, the vehicle must be
parked on level ground and the engine
must be cool.
!
Excess oil must be siphoned or drained off.
It will cause damage to the engine and catalytic
converter not covered by the Mercedes-Benz
Limited Warranty.
Warning!
G
In order to avoid any possibly 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.


513 Operation
Tires and wheels
Warning!
G
Each tire, including the spare (if provided),
should be checked monthly when cold and
inflated to the inflation pressure recom-
mended by the vehicle manufacturer on the
vehicle placard or the tire inflation pressure
label. (If your vehicle has tires of a different
size than the size indicated on the vehicle
placard or the tire inflation pressure label,
you should determine the proper tire infla-
tion pressure for those tires).
As an added safety feature, your vehicle has
been equipped with a tire pressure monitor-
ing system (TPMS) that illuminates a low tire
pressure telltale when one or more of your
tires is significantly under-inflated. Accord-
ingly, when the low tire pressure telltale illu-
minates, you should stop and check your
tires as soon as possible, and inflate then to
the proper pressure. Driving on a significant-
ly under-inflated tire causes the tire to over-
heat and can lead to tire failure.
Under-inflation also reduces fuel efficiency
and tire tread life, and may effect the vehi-
cle’s handling and stopping ability. Please
note that the TPMS is not a substitute for
proper tire maintenance, and it is the driv-
er’s responsibility to maintain correct tire
pressure, even if under-inflation has not
reached the level to trigger illumination of
the TPMS low tire pressure telltale.
Your vehicle has also been equipped with a
TPMS malfunction indicator to indicate
when the system is not operating properly.
The TPMS malfunction indicator is com-
bined with the low tire pressure telltale.
When the system detects a malfunction, the
telltale will flash for approximately
one minute and then remain continuously il-
luminated. This sequence will continue upon
subsequent vehicle start-ups as long as the
malfunction exists. When the malfunction
indicator is illuminated, the system may not
be able to detect or signal low tire pressure
as intended.
TPMS malfunctions may occur for a variety
of reasons, including the installation of
replacement or alternate tires or wheels on
the vehicle that prevent the TPMS from
functioning properly. Always check the
TPMS malfunction telltale after replacing
one or more tires or wheels on your vehicle
to ensure that the replacement or alternate
tires and wheels allow the TPMS to continue
to function properly.i
If a condition causing the TPMS to malfunc-
tion develops, it may take up to 10 minutes for
the system to signal a malfunction using the
TPMS telltale flashing and illumination se-
quence.
The telltale extinguishes after a few minutes driv-
ing if the malfunction has been corrected.
i
Operating radio transmission equipment
(e.g. wireless headsets, two-way radios) in or
near the vehicle could cause the TPMS to mal-
function.

526 OperationTires and wheelsTire and loading terminology
Accessory weight
The combined weight (in excess of those
standard items which may be replaced) of
automatic transmission, power steering,
power brakes, power windows, power
seats, radio, and heater, to the extent that
these items are available as
factory-installed equipment (whether
installed or not).
Air pressure
The amount of air inside the tire pressing
outward on each square inch of the tire.
Air pressure is expressed in pounds per
square inch (psi), or kilopascal (kPa) or
bars.
Aspect ratio
Dimensional relationship between tire
section height and section width
expressed in percentage.Bar
Another metric unit for air pressure. There
are 14.5038 pounds per square inch (psi)
to 1 bar; there are 100 kilopascals (kPa)
to 1 bar.
Bead
The tire bead contains steel wires wrapped
by steel cords that hold the tire onto the
rim.
Cold tire inflation pressure
Tire inflation pressure when your vehicle
has been sitting for at least 3 hours or driv-
en no more than 1 mile (1.6 km).
Curb weight
The weight of a motor vehicle with stan-
dard equipment including the maximum
capacity of fuel, oil, and coolant, and, if so
equipped, air conditioning and additional
optional equipment, but without passen-
gers and cargo.DOT (D
epartment o
f T
ransportation)
A tire branding symbol which denotes the
tire meets requirements of the
U.S. Department of Transportation.
GAWR (G
ross A
xle W
eight R
ating)
The GAWR is the maximum permissible
axle weight. The gross vehicle weight on
each axle must never exceed the GAWR for
the front and rear axle indicated on the
Certification label located on the driver’s
door B-pillar.
GVW (G
ross V
ehicle W
eight)
The GVW comprises the weight of the
vehicle including fuel, tools, spare wheel,
installed accessories, passengers and
cargo and, if applicable, trailer tongue
load. The GVW must never exceed the
GVWR indicated on the Certification label
located on the driver’s door B-pillar.

544 Practical hintsWhat to do if …?Lamps in instrument clusterGeneral information:
If any of the following lamps in the instru-
ment cluster fails to come on during the bulb self-check when switching on the igni-
tion, have the respective bulb checked and
replaced if necessary.Problem
Possible cause/consequence
Suggested solution
-
The yellow Antilock Brake
System (ABS) indicator lamp
comes on while the engine is
running.
The ABS has detected a malfunction and
has switched off. The BAS, ESP
® and
PRE-SAFE
® are also switched off (see mes-
sages in multifunction display).
The brake system is still functioning nor-
mally but without the ABS available.
If the ABS control unit is malfunctioning,
other systems such as Parktronic*, DIS-
TRONIC Plus*, navigation system, Park As-
sist* and the automatic transmission may
also be malfunctioning.

Continue driving with added caution.
Wheels may lock during hard braking,
reducing steering capability.

Read and observe messages in the mul-
tifunction display (
page 557).

Have the system checked at an autho-
rized Mercedes-Benz Center as soon as
possible.
Failure to follow these instructions increas-
es the risk of an accident.
The charging voltage has fallen below
10 volts. The ABS has switched off.
The battery may not be charged sufficiently.
When the voltage is above this value again,
the ABS is operational again and the ABS in-
dicator lamp should go out.
If the ABS indicator lamp does not go out:
Have the generator (alternator) and the
battery checked.

559 Practical hints
What to do if …?
Text messagesDisplay
Possible cause/consequence
Possible solution
Apply brake
to shift
from ’P’
You have tried to Shift the automatic trans-
mission to D, R or N without stepping on
the brake.

Step on brake.
USA only:
Cruise control
- - - mph
Canada only:
Cruise control
- - - km/h
You have tried to switch on cruise control
below a speed of 20 mph (30 km/h).

Drive faster than 20 mph (30 km/h) and save the speed.
ESP
® is deactivated.

Activate ESP
® (page 72).
The automatic transmission is in position P,
R or N.

Shift the automatic transmission toD (
page 367).
The system is overheated.

Wait until the system cools down.
The vehicle is secured in place by the elec-
tric parking brake.

Release electric parking brake (
page 364).
Cruise control
inoperative
Cruise control is malfunctioning.

Have cruise control checked by an authorized Mercedes-Benz
Center.

561 Practical hints
What to do if …?
Display
Possible cause/consequence
Possible solution
DISTRONIC PLUS
inoperative
DISTRONIC Plus* is malfunctioning.

Visit an authorized Mercedes-Benz Center as soon as possible.
DISTRONIC PLUS
passive
You have depressed the accelerator pedal,
DISTRONIC Plus* is no longer controlling
the speed of the vehicle.

Release the accelerator pedal.
USA only:
DISTRONIC PLUS
- - - mph
Canada only:
DISTRONIC PLUS
- - - km/h
You have attempted to activate DISTRONIC
Plus* at a speed below 20 mph (30 km / h)
without the vehicle in front being displayed
in the multifunction display (
page 385).

Drive faster than 20 mph (30 km / h) and activate DISTRONIC
Plus* again.
ESP
® is deactivated.

Activate ESP
® (page 72).
The automatic transmission is in position P,
R or N.

Shift the automatic transmission toD (
page 367).
The system is overheated.

Wait until the system cools down.
The vehicle is secured in place by the elec-
tric parking brake.

Release electric parking brake (
page 364).
The driver’s door is open and the drivers
seat belt is unbuckled.

Close the driver’s door and fasten your seat belt.
The hood is open.

Close the hood (
page 493).

562 Practical hintsWhat to do if …?Display
Possible cause/consequence
Possible solution
Door Open
Vehicle not in Park
You have opened the driver’s
door and the automatic trans-
mission is still in position D, R
orN.

Before you leave the vehicle, make sure that the automatic transmission
is shift to position P and that the parking brake is engaged.
Front passenger
airbag disabled
See Oper. Manual
Front passenger front air bag is
deactivated while driving even
though an adult or someone
larger than a small individual is
occupying the front passenger
seat. Forces acting on the seat
may make the system sense a
decrease in weight.
Stop the vehicle in a safe location as soon as possible and check the front
passenger seat for the following:
Switch off the ignition (
page 315).

Have the front passenger vacate the seat and exit the vehicle.

Adjust the seat in a height position (
page 318).

Make sure that no objects which apply forces to the seat are present (e.g.
objects such as books, briefcases etc. lodged underneath, behind or
around the seat). Such forces may cause the system to sense that an oc-
cupant of a lesser weight than actually present is on the front passenger
seat.

Keep the seat unoccupied, close the front passenger door and switch on
the ignition (
page 315).
Monitor the 59indicator lamp right of the instrument cluster
(
page 53) and the multifunction display in the instrument cluster
(page 241) for the following:
(Continued on next page)