MERCEDES-BENZ S350 2006 W221 Owner's Manual

410 Practical hintsBatteryReconnecting the battery
Turn off all electrical consumers.

Connect the positive lead and fasten its
cover2.

Connect negative lead3.Batteries contain materials that can harm
the environment if disposed of improperly.
Large 12-volt storage batteries contain
lead. Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.!Never invert the terminal connections.!The battery, its filler caps and the vent
tube must always be securely installed
when the vehicle is in operation.
iThe following procedures must be car-
ried out following any interruption of
battery power (e.g. due to reconnect-
ing):

Set the clock (see COMAND opera-
tor’s manual).


Synchronize the ESP
®
(
page 356).


Synchronize side windows
(page 210).


Synchronize tilt/sliding sunroof
(page 214).

411 Practical hints
Jump starting
Jump starting
If the battery is discharged, the engine can
be started with jumper cables and the bat-
tery of another vehicle. Observe the follow-
ing:

Jump starting should only be performed
when the engine and catalytic convert-
er are cold.


Do not start the engine if the battery is
frozen. Let the battery thaw out first.


Only use 12-volt battery to jump start
your vehicle. Jump starting with a more
powerful battery could damage the ve-
hicle’s electrical system, which will not
be covered by the Mercedes-Benz Lim-
ited Warranty.


Only use jumper cables with sufficient
cross-section and insulated terminal
clamps.


Always make sure that the jumper ca-
bles are not on or near pulleys, fans or
other parts that move when an engine
is started or running.
Warning!
G
Failure to follow these directions will cause
damage to the electronic components, and
can lead to a battery explosion and severe
injury or death.
Never lean over batteries while connecting
or jump starting, 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 very explosive. Keep
flames or sparks away from battery, avoid
improper connection of jumper cables,
smoking, etc.
Attempting to jump start a frozen battery
can result in it exploding, causing personal
injury.
Read all instructions before proceeding.
!Avoid repeated and lengthy starting at-
tempts.
Do not attempt to start the engine us-
ing a battery quick charge unit.
If engine does not run after several un-
successful starting attempts, have it
checked at the nearest authorized
Mercedes-Benz Center.
Excessive unburned fuel generated by
repeated failed starting attempts may
damage the catalytic converter and
may present a fire risk.
Make sure the jumper cables do not
have loose or missing insulation.
Make sure the cable clamps do not
touch any other metal part while the
other end is still attached to a battery.!Do not tow-start the vehicle.

412 Practical hintsJump startingThe battery is located on the right side of
the trunk under the battery cover
(page 408).

Make sure the two vehicles do not
touch.

Turn off all electrical consumers.

Apply parking brake.

Shift gear selector lever to positionP.

Open the trunk lid.

Remove battery cover (
page 408).

Remove red cover from positive
terminal 1. 1Positive terminal of discharged battery
2Negative terminal of discharged
battery
3Positive terminal of charged battery
4Negative terminal of charged battery

Connect positive terminals 1 and3
of the batteries with the jumper cable.
Clamp cable to charged battery3
first.

Start engine of the vehicle with the
charged battery and run at idle speed.

Connect negative terminals2 and4
of the batteries with the jumper cable.
Clamp cable to charged battery4
first.

Start the engine of the disabled vehi-
cle.
Now you can again turn on the electrical
consumers. Do not turn on the lights under
any circumstances.

Remove the jumper cables first from
negative terminals2 and4 and then
from positive terminals1 and3.
You can now turn on the lights.

Have the battery checked at the near-
est authorized Mercedes-Benz Center.
Warning!
G
Keep flames or sparks away from battery.
Do not smoke.
Observe all safety instructions and precau-
tions when handling automotive batteries
(page 408).
!Never invert the terminal connections.

413 Practical hints
Towing the vehicle
Towing the vehicle
Mercedes-Benz recommends that the vehi-
cle be transported with all wheels off the
ground using flatbed or appropriate wheel
lift/dolly equipment. This method is pref-
erable to other types of towing.When circumstances do not permit the
recommended towing methods, the vehi-
cle may be towed with all wheels on the
ground or front wheels raised (except vehi-
cles with 4MATIC) only so far as necessary
to have the vehicle moved to a safe loca-
tion where the recommended towing
methods can be employed.
!Use flatbed or wheel lift/dolly equip-
ment with SmartKey in starter switch
turned to position0.
Do not tow with sling-type equipment.
Towing with sling-type equipment over
bumpy roads will damage radiator and
supports.
To prevent damage during transport,
do not tie down vehicle by its chassis or
suspension parts.
Switch off the tow-away alarm
(page 88) and the automatic central
locking (
page 112).
Do not tow-start the vehicle.
!Vehicles with 4MATIC:
Do not tow with one axle raised. Doing
so could damage the transfer case,
which is not covered by the
Mercedes-Benz Limited Warranty.
All wheels must be on or off the ground.
Observe instructions for towing the ve-
hicle with all wheels on the ground.
!If the vehicle is towed with the front
axle raised (not permissible for vehicles
with 4MATIC), the engine must be shut
off (SmartKey in starter switch
position0 or 1). Otherwise the ESP
®
will immediately be engaged and will
apply the rear wheel brakes.
When towing the vehicle with all wheels
on the ground, the selector lever must
be in positionN and the SmartKey
must be in starter switch position2.
When towing the vehicle with all wheels
on the ground or the front axle raised,
the vehicle may be towed only for dis-
tances up to 30 miles (50 km) and at a
speed not to exceed 30 mph
(50 km/h).

414 Practical hintsTowing the vehicle
!
To be certain to avoid a possibility of
damage to the drivetrain, however, we
recommend the drive shaft be discon-
nected at the rear axle drive flange (ve-
hicles with 4MATIC: disconnected at
the front and rear axle drive flanges) for
any towing beyond a short tow to a
nearby garage.Warning!
G
If circumstances require towing the vehicle
with all wheels on the ground, always tow
with a tow bar if:

the engine will not run


there is a malfunction in the power sup-
ply or in the vehicle’s electrical system
as that will be necessary to adequately con-
trol the towed vehicle.
Prior to towing the vehicle with all wheels on
the ground, make sure the SmartKey is in
starter switch position2.
If the SmartKey is left in starter switch
position0 for an extended period of time, it
can no longer be turned in the switch. In this
case, the steering is locked. To unlock, re-
move SmartKey from starter switch and re-
insert.Warning!
G
With the engine not running, there is no
power assistance for the brake and steering
systems. In this case, it is important to keep
in mind that a considerably higher degree of
effort is necessary to brake and steer the ve-
hicle. Adapt your driving accordingly.iThe gear selector lever will remain
locked in positionP and the SmartKey
will not turn in the starter switch if the
battery is disconnected or discharged.
See information on the battery
(page 408) or on jump starting
(page 411).
iTo signal turns while being towed with
the hazard warning flasher in use, turn
SmartKey in starter switch to
position2 and activate the combina-
tion switch for the left or right turn sig-
nal in the usual manner – only the
selected turn signal will operate.
Upon canceling the turn signal, the haz-
ard warning flasher will operate again.

415 Practical hints
Towing the vehicle
Installing towing eye bolt
1Cover on right side of front bumper
2Cover on right side of rear bumperRemoving cover

Press mark on cover in the direction of
arrow.

Lift cover off to reveal the threaded
hole for towing eye bolt.
Installing towing eye bolt

Take towing eye bolt and wheel wrench
out of trunk (
page 384).

Screw towing eye bolt clockwise into
its stop and tighten with wheel wrench.
Removing towing eye bolt

Loosen towing eye bolt counterclock-
wise with wheel wrench.

Unscrew towing eye bolt.

Store towing eye bolt and wheel
wrench in trunk.
Installing cover

Fit cover and snap into place.
!When towing the vehicle with all wheels
on the ground, please note the follow-
ing:
With the automatic central locking acti-
vated and the SmartKey in starter
switch position2, or KEYLESS-GO*
start/stop button (
page 35) in
position2, the vehicle doors lock if the
left front wheel as well as the right rear
wheel are turning at vehicle speeds of
approximately 9 mph (15 km/h) or
more.
Switch off the tow-away alarm
(
page 88).
To prevent the vehicle doors from lock-
ing, deactivate the automatic central
locking (
page 112).
Towing of the vehicle should only be
done using the properly installed tow-
ing eye bolt. Never attach tow cable,
tow rope or tow rod to vehicle chassis,
frame or suspension parts.

416 Practical hintsFusesFuses are designed to protect the electri-
cal circuits in your vehicle from a short cir-
cuit. If a fuse is blown, the component(s)
and systems controlled by that fuse will
stop working.
The following aids are available to help you
replace fuses (
page 416):


Fuse chart


Spare fuses


Special fuse extractorYour vehicle’s electrical fuses are located
in various fuse boxes:


In the dashboard on the passenger side
(page 417)


In the rear passenger compartment un-
der the right rear seat (
page 417)


In the engine compartment on the driv-
er’s side (
page 418)


In the engine compartment on the pas-
senger side (
page 418)
Aids for replacing fuses
Fuse chart
A chart explaining fuse allocation and fuse
amperages can be found in the vehicle tool
kit in the trunk (
page 384).
Spare fuses
Spare fuses are found in the vehicle tool kit
in the trunk (
page 384).
Fuse extractor
The fuse extractor is found in the vehicle
tool kit in the trunk (
page 384).
Warning!
G
Only use fuses approved by Mercedes-Benz
and which have the specified amperage. Us-
ing other fuses may cause an overload and
lead to a fire, or cause damage to electrical
components and/or systems.
!Never attempt to repair or bridge a
blown fuse. Have the cause determined
and remedied by an authorized
Mercedes-Benz Center.

417 Practical hintsFuses
Fuse boxes in passenger compartment
There are two fuse boxes in the in passen-
ger compartment. One fuse box is located
in the dashboard. An additional fuse box is
located in the rear passenger compart-
ment.
Fuse box in dashboard
The fuse box is located in the dashboard
on the front passenger side.
1Recess in the cover
2CoverOpening

Open the front passenger door.

Insert flat, blunt object as a lever in
recess1 on the edge of cover2.

Loosen cover2 from the dashboard
using lever.

Using your hands, pull cover2 in the
direction of the arrow and remove.
Closing

Hook cover2 into the opening at the
front.

Press cover2 back on until it engag-
es.Fuse box in the rear passenger
compartment
The fuse box is located in the footwell be-
low the right rear seat.
1Cover
Opening

Pull cover1 a w a y f r o m f u s e b o x i n t h e
direction of arrow.

Remove cover rearward.
Closing

Press cover back on until it engages.
!Do not use sharp objects such as a
screw driver to open the fuse box
cover2 in the dashboard, as this
could damage it.

418 Practical hintsFusesFuse boxes in engine compartment
There are three fuse boxes located in the
engine compartment in front of the firewall
(dividing wall between engine compart-
ment and passenger compartment):

one box on the driver’s side


two boxes on the front passenger side
Fuse box, driver’s side1Cover
2Slide
Fuse box, front passenger side1Cover
2Slide
To open, push slides2 to
symbolΠand remove cover1.

To close, replace cover1 and press it
down and push both slides2 to
symbol‹.
Additional fuse box, front passenger side3Tabs
4Cover
To open, press tabs3 together and
remove cover4.

To close, place cover4 and push it
down until it engages.
!The cover1 must fit properly and the
slides2 must be positioned at
symbol‹, as otherwise moisture or
dirt may impair the functionality of the
fuses.
!The cover4 must fit properly, as oth-
erwise moisture or dirt may impair the
functionality of the fuses.

419 Technical data
Parts service
Warranty coverage
Identification labels
Layout of poly-V-belt drive
Engine
Rims and tires
Electrical system
Main dimensions and weights
Fuels, coolants, lubricants, etc.