battery MERCEDES-BENZ S55AMG 2004 W220 Owner's Guide

295 Operation
Maintenance
Calling up the service indicator
Switch on ignition.
The standard display of the control sys-
tem appears (
page 139).

Press button k or j on the mul-
tifunction steering wheel until FSS indi-
cator with the service symbol 9 or
´ and the service deadline appears
in the multifunction display.
Resetting the service indicator
In the event that the service on your vehi-
cle is not carried out by an authorized
Mercedes-Benz Center, you can reset the
service indicator yourself.
Switch on ignition.
The standard display of the control sys-
tem appears (
page 139).

Press button k or j on the mul-
tifunction steering wheel until the FSS
indicator with the service symbol 9
or ´ and the service deadline ap-
pears in the multifunction display.

Press reset button on the instrument
cluster for about three seconds.
This message appears in the multifunc-
tion display:SERVICE INTERVAL...
RESET WITH
R BUTTON FOR 3 SEC.


To confirm, press reset button until you
hear a signal.
The service indicator now displays the
reset interval.
iIf the battery is disconnected, the days
of disconnection will not be included in
the count shown by the service indica-
tor. To arrive at the true service dead-
line, you will need to subtract these
days from the days shown in the ser-
vice indicator.
Do not confuse the service indicator
with the engine oil level indicator :.
iIf the service indicator was inadvertent-
ly reset, have a Mercedes-Benz Center
correct it.
Only reset if the proper service has
been performed. Resetting the system
without performing proper service as
called for by the FSS will cause the FSS
to incorrectly determine the next ser-
vice interval which will result in engine
damage not covered by the
Mercedes-Benz Limited Warranty.

303 Practical hints
What to do if …?
Where will I find ...?
Unlocking/locking in an emergency
Opening/closing in an emergency
Replacing bulbs
Replacing wiper blades
Flat tire
Battery
Jump starting
Towing the vehicle
Fuses

304 Practical hintsWhat to do if …?
What to do if …?Lamps in instrument clusterGeneral information:
If a bulb in the instrument cluster fails to
come on during the bulb self-check when the ignition is turned on, have it checked
and replaced if necessary.Problem
Possible cause
Suggested solution
-
The yellow ABS malfunction in-
dicator lamp comes on while
driving.
The ABS has detected a malfunction and
has switched off. The BAS and the ESP are
also switched off (see messages in 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*, Distron-
ic*, and the automatic transmission may
also be malfunctioning.

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

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 and the ABS has switched off.
When the voltage is above this value again,
the ABS is operational again.
If necessary, have the generator and
battery checked.

320 Practical hintsWhat to do if …?Display symbol
Display message
Possible cause
Possible solution
#
BATTERY/ALTERNATOR
VISIT WORKSHOP!
The battery was charged with a battery
charger or jump started.

Have the battery checked at a service
station.
The battery is no longer charging.
Possible causes:

alternator malfunctioning


broken poly-V-belt

Stop immediately and check the
poly-V-belt.
If it is broken:

Do not continue to drive. Otherwise the
engine will overheat due to an inoperative
water pump which may result in damage
to the engine. Notify an authorized
Mercedes-Benz Center.
If it is intact:

Drive immediately to the nearest autho-
rized Mercedes-Benz Center. Adjust driv-
ing to be consistent with reduced braking
responsiveness.

328 Practical hintsWhat to do if …?Display symbol
Display message
Possible cause
Possible solution
_
ENTRY POSITION
DO NOT DRIVE!
Seat, exterior mirrors and steering wheel
have not yet moved to their preset driving
positions.

Wait until the seat, exterior mirrors and
steering wheel have moved to their driv-
ing positions.
The message will disappear.
Y

HOOD OPEN!
You are driving with the hood open.

Close the hood (
page 273).
I
REMOVE KEY!
You have forgotten to remove the
SmartKey.

Remove the SmartKey from the ignition.
REPLACE KEY!
DRIVE TO WORKSHOP!
The batteries in the SmartKey are dead.

Change the batteries (
page 349).
AUTOM. LIGHT ON
REMOVE KEY!

Remove the SmartKey from the starter
switch.
F
KEY
CHECK BATTERY
!
The battery in the KEYLESS-GO* key is
discharged.

Change the battery (
page 349).
KEY
NOT RECOGNIZED!
SmartKey with KEYLESS-GO* is not rec-
ognized while the engine is running be-
cause

the SmartKey is not in the vehicle


there is strong radio-frequency inter-
ference

Stop the vehicle as soon as it is safe to do
so.

Search for the SmartKey.
Otherwise the vehicle cannot be centrally
locked nor can the engine be started again
after it has been stopped.

334 Practical hintsWhat to do if …?Display symbol
Display message
Possible cause
Possible solution
L
TELE AID
DRIVE TO WORKSHOP!
One or more main functions of the Tele
Aid system are malfunctioning.

Have the Tele Aid system checked by an
authorized Mercedes-Benz Center.
TELE AID BATTERY
DRIVE TO WORKSHOP!
The emergency power battery for the Tele
Aid system is malfunctioning. If the vehi-
cle battery is also discharged, Tele Aid
will not be operational.

Have the Tele Aid system checked by an
authorized Mercedes-Benz Center.
t
FUNCTION
NOT AVAILABLE!
This display appears if button t or
s on the multifunction steering wheel
is pressed and the vehicle is not equipped
with a telephone.
Ê
TRUNK OPEN!
This message will appear whenever the
trunk lid is open.

Close the trunk lid.
W
WASHER FLUID
CHECK LEVEL!
The fluid level has dropped to about
1/3
of total reservoir capacity.
Add washer fluid (
page 281).
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.

349 Practical hints
Unlocking/locking in an emergency
Unlocking the trunk
A minimum height clearance of 6 ft.
(1.85 m) is required to open the trunk lid.
If you are unable to unlock the trunk with
the SmartKey or KEYLESS-GO*, open the
trunk with the mechanical key.
The trunk lid lock is located above the rear
license plate recess.
1Unlocking and opening
Insert the mechanical key into the
trunk lid lock.

Turn the mechanical key counterclock-
wise to position1.
The trunk unlocks and opens.
Locking the vehicle
If you are unable to lock the vehicle with
the SmartKey or the SmartKey with
KEYLESS-GO*, lock it with the mechanical
key as follows:
Close the passenger doors and the
trunk lid.

Press the central locking switch in the
center console (
page 107).

Check to see whether the locking knob
on the passenger door is still visible. If
necessary push it down manually.

Slide mechanical key2 out of the
SmartKey (
page 348).

Lock the driver’s door with the me-
chanical key (
page 348).

Lock the trunk lid if necessary with the
mechanical key (if applicable)
(page 105).
Replacing batteries in the SmartKey/
SmartKey with KEYLESS-GO*
If the batteries in the SmartKey or the
SmartKey with KEYLESS-GO* are dis-
charged, the vehicle can no longer be
locked or unlocked. It is recommended to
have the batteries replaced at an autho-
rized Mercedes-Benz Center.
!The trunk lid swings open upwards au-
tomatically. Always make sure that
there is sufficient overhead clearance.
Warning!
G
Keep the batteries out of reach of children.
If a battery is swallowed, seek medical help
immediately.

350 Practical hintsUnlocking/locking in an emergencyBatteries contain materials that can harm
the environment if disposed of improperly.
Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.
SmartKey
1Mechanical key
2Battery compartment
Replacement batteries: Lithium, type
CR 2025 or equivalent.

Remove mechanical key1
(page 348).

Insert the mechanical key1 in side
opening and push gray slide.
The battery compartment is unlatched.

Pull the battery compartment2 out of
the SmartKey housing in direction of
arrow.

Remove the batteries.3Battery
4Contact spring

Using a lint-free cloth, insert new
batteries3 under the contact
spring4 with the plus (+) side facing
up.

Return battery compartment into hous-
ing until it locks into place.
iWhen changing batteries, always re-
place both batteries.
The required replacement batteries are
available at any authorized
Mercedes-Benz Center.

351 Practical hints
Unlocking/locking in an emergency
SmartKey with KEYLESS-GO*
1Battery
2Tilt battery up
3Mechanical keyReplacement battery: Lithium, type
CR 2025 or equivalent.

Remove mechanical key (
page 348).

Insert the mechanical key in side open-
ing and push gray slide.
The battery compartment is unlatched.

Pull the battery compartment out of the
SmartKey housing.

Using mechanical key3, apply pres-
sure to position2.
Battery1 tilts up slightly.

Pull out battery1 in direction of ar-
row.

Using a lint-free cloth, insert new bat-
tery with the plus (+) side facing up.

Return battery compartment into hous-
ing until it locks into place.
Fuel filler flap
In case the central locking system does
not release the fuel filler flap, you can it
manually.
1Release knob
Open the trunk.

Remove the trim inside the trunk on the
right-hand side.

Pull release knob1 in the direction of
arrow.
The fuel filler flap can be opened.
iThe required replacement battery is
available at any authorized
Mercedes-Benz Center.

366 Practical hintsBattery
Battery
The battery is located on the right side of
the trunk under the battery cover.
1Battery cover 
Pull on the outer, right-hand side of
cover1 and remove it in the direction
of the arrow.
Warning!
G
Failure to follow these instructions can re-
sult in severe injury or death.
Never lean over batteries while connecting,
you might get injured.
Battery fluid contains sulfuric acid. Do not
allow this fluid to come in contact with eyes,
skin or clothing. In case it does, immediately
flush affected area with water and seek
medical help if necessary.
A battery will also produce hydrogen gas,
which is flammable and explosive. Keep
flames or sparks away from battery, avoid
improper connection of jumper cables,
smoking, etc.Warning!
G
Do not place metal objects on the battery as
this could result in a short circuit.
Use leak-proof battery only to avoid the risk
of acid burns in the event of an accident.
!Never loosen or detach battery termi-
nal clamps while the engine is running
or the SmartKey is in the starter switch.
Otherwise the alternator and other
electronic components could be se-
verely damaged.
Have the battery checked regularly by
an authorized Mercedes-Benz Center.
Refer to Service Booklet for mainte-
nance intervals or contact an autho-
rized Mercedes-Benz Center for further
information.Warning!
G
With a disconnected battery

you will no longer be able to turn the
SmartKey in the starter switch and
pressing the KEYLESS-GO* start/stop
button on the gear selector lever will
have no effect


the gear selector lever will remain
locked in positionP