2005 MERCEDES-BENZ C320 engine

364 Practical hintsJump startingThe battery is located in the engine
compartment on the right hand side. The
terminals for jump starting are located in
front of the battery.
Make sure the two vehicles do not
touch.

Turn off all electrical consumers.

Apply parking brake.

Shift gear selector lever to positionP
(manual transmission to Neutral).1Positive terminal of charged battery
2Positive under hood terminal in front of
discharged battery
3Negative under hood terminal in front
of discharged battery
4Negative terminal of charged battery

Connect positive terminal1 of the
charged battery with positive under
hood terminal2 in front of the
discharged battery with the jumper
cables. Clamp cable to charged
battery1 first.

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

Connect negative terminal4 of the
charged battery with negative under
hood terminal3 in front of the
discharged battery with the jumper
cables. Clamp cable to charged
battery4 first.

Start the engine of the disabled
vehicle.
You can now again turn on the electrical
consumers. Do not turn on the lights under
any circumstances.

Remove the jumper cables first from
negative terminals4 and3 and then
from positive terminals1 and2.
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 284).
!Vehicles with automatic transmission
and/or 4MATIC:
Do not tow-start the vehicle.

365 Practical hints
Towing the vehicle
Towing the vehicle
Mercedes-Benz recommends that the
vehicle be transported with all wheels off
the ground using flatbed or appropriate
wheel lift/dolly equipment. This method is
preferable to other types of towing.When circumstances do not permit the
recommended towing methods, the
vehicle may be towed with all wheels on
the ground or front wheels raised (except
vehicles with 4MATIC) only so far as
necessary to have the vehicle moved to a
safe location where the recommended
towing methods can be employed.
!Use flatbed or wheel lift/dolly equip-
ment with the SmartKey in the 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 85) and deactivate the auto-
matic central locking (
page 145).
!Vehicles with automatic transmission
and/or 4MATIC:
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
vehicle 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 or1). 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 gear selector lever
must be in positionN (manual trans-
mission: gears disengaged) 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
distances up to 30 miles (50 km) and
at a speed not to exceed 30 mph
(50 km/h).

366 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
(vehicles 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
supply or in the vehicle’s electrical
system
as that will be necessary to adequately
control 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,
remove SmartKey from starter switch and
reinsert.
iTo signal turns while being towed with
the hazard warning flasher in use,
switch on ignition and activate the
combination switch for the left or right
turn signal in the usual manner – only
the selected turn signal will operate.
Upon canceling the turn signal, the
hazard warning flasher will operate
again.

367 Practical hints
Towing the vehicle
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.
!When towing the vehicle with all wheels
on the ground, please note the
following:
With the automatic central locking
activated and the SmartKey in starter
switch position2, the vehicle doors
lock if the left front wheel as well as the
right rear wheel are turning at vehicle
speeds of approx. 9 mph (15 km/h) or
more.
Switch off the tow-away alarm*
(page 85).
To prevent the vehicle doors from
locking, deactivate the automatic
central locking (
page 145).
Towing of the vehicle should only be
done using the properly installed
towing eye bolt. Never attach tow
cable, tow rope or tow rod to vehicle
chassis, frame or suspension parts.
iIf the battery is disconnected or
discharged

the SmartKey will not turn in the
starter switch. For more informa-
tion, see “Battery” (
page 360)
and “Jump starting” (page 363).


the gear selector lever will remain
locked in positionP. For informa-
tion on manually unlocking the
transmission gear selector lever
see (
page 340).

369 Practical hintsFuses
Fuses
The electrical fuses in your vehicle serve to
stop the supply of electricity to a device
that is malfunctioning. This helps to
prevent damage to the other vehicle
electronics.
The following aids are available to help you
change fuses (
page 369):


Fuse chart


Spare fuses


Fuse extractor
The electrical fuses are located in different
fuse boxes:


Main fuse box in passenger
compartment (
page 370)


Fuse box in engine compartment
(page 370)


Fuse box in trunk (
page 371)
Aids for changing fuses
Fuse chart
The fuse chart is found in the main fuse
box in the passenger compartment
(page 370). The amperages of the fuses
are also given there.
Spare fuses
Spare fuses are found in the vehicle tool kit
in the spare wheel well (
page 329).
Fuse extractor
The fuse extractor is found in the fuse box
cover in the trunk (
page 371).
Warning!
G
Only use fuses approved for Mercedes-Benz
with the specified amperage for the system
in question. Otherwise, a short circuit could
result and cause a fire.
!Only install fuses that have been tested
and approved by Mercedes-Benz and
that have the specified amperage
rating.
Otherwise, electrical parts or systems
could be damaged.
Never attempt to repair or bridge a
blown fuse. Have the cause determined
and remedied by an authorized
Mercedes-Benz Center.

370 Practical hintsFusesMain fuse box in passenger compartment
The main fuse box is located in the passen-
ger compartment on the driver’s side of
the cockpit.
1Main fuse box cover
Opening fuse box
Open the driver’s door.

Pull fuse box cover1 open with a
screw driver or similar tool (see arrow).

Remove fuse box cover1 rearward.Closing fuse box

Attach fuse box cover1 in the front.

Fold fuse box cover1 in until it
engages.
Fuse box in engine compartment
The fuse box is located in the engine
compartment on the driver’s side.
1Cover
2Screws
3RetainerRemoving cover

Twist screws2
90° counterclockwise.

Lift the rear of cover1.

Slide out retainer3 and remove
cover1 by pulling towards front.
Opening fuse box
4Fuse box cover
5Clamps

With a dry cloth, remove any moisture
from the fuse box.

Release clamps5.

Remove fuse box cover4.

373 Technical data
Parts service
Warranty coverage
Identification labels
Layout of poly-V-belt drive
Engine
Rims and Tires
Electrical system
Main dimensions
Weights
Fuels, coolants, lubricants, etc.
Consumer information

376 Technical dataIdentification labels1Certification label2Vehicle Identification Number (VIN)3Emission control information label,
includes both federal and California
certification exhaust emission
standards
4Engine number (engraved on engine)
5VIN, visible (lower edge of windshield)
6Vacuum line routing diagram label
When ordering parts, please specify
vehicle identification and engine numbers.