2007 MERCEDES-BENZ C230 lock

376 Practical hints
Replacing wiper blades
Installing wiper blades
1Recess
2Tab
3Locking
4Taper piece
5Square recessLift up the wiper arm as far as you need
to position the wiper blade under the
wiper arm and hold it.
Carefully fold the wiper arm back and
make sure that the taper piece4
slides into the recess1 at the wiper
blade.
Slide the tab2 back in direction of
arrow3 until it audibly engages.
The wiper blade is locked.
!Hold on to the wiper arm. If released, the
force of the impact from the tensioning spring
could crack the windshield.
!Make certain that the square recess5 on
the taper piece4 is on the top, otherwise the
taper piece4 cannot slide into the recess1 at
the wiper blade. If the square recess5 is not at
the top turn the taper piece4 around to bring
the square recess5 to the top.
!Make certain that the wiper blades are prop-
erly installed. Improperly installed wiper blades
may cause windshield damage.

378 Practical hints
Flat tire
Lifting the vehicle
Prevent the vehicle from rolling away
by blocking wheels with wheel chocks
or other sizable objects.
One wheel chock is included with the
vehicle tool kit (
page 356).
When changing wheel on a level surface:
Place the wheel chock in front of and
another sizable object behind the
wheel that is diagonally opposite to the
wheel being changed.
Always try lifting the vehicle using the jack
on a level surface. However, should cir-
cumstances require you to do so on a hill,
place the wheel chock and the other size-
able object as follows:
Place wheel chocks and another siz-
able object on the downhill side block-
ing both wheels of the axle not being
worked on.
On wheel to be changed, loosen but do
not yet remove the wheel bolts
(approximately one full turn with
wrench).
The jack take-up brackets are located
directly behind the front wheel housings
and in front of the rear wheel housings.
Warning!G
The jack is designed exclusively for jacking
up the vehicle at the jack take-up brackets
built into both sides of the vehicle. To help
avoid personal injury, use the jack only to lift
the vehicle during a wheel change. Never
get beneath the vehicle while it is supported
by the jack. Keep hands and feet away from
the area under the lifted vehicle. Always
firmly set parking brake and block wheels
before raising vehicle with jack.
Do not disengage parking brake while the
vehicle is raised. Be certain that the jack is
always vertical (plumb line) when in use,
especially on hills. Always try to use the jack
on level surface. Make sure the jack arm is
fully seated in the jack take-up bracket. Al-
ways lower the vehicle onto sufficient ca-
pacity jackstands before working under the
vehicle.

381 Practical hints
Flat tire
Unscrew the alignment bolt, install last
wheel bolt and tighten slightly.Lowering the vehicle
Lower vehicle by turning crank
counterclockwise until vehicle is
resting fully on its own weight.
Remove the jack.
1 - 5Wheel bolts
Tighten the five wheel bolts evenly,
following the diagonal sequence
illustrated (1to5), until all bolts are
tight. Observe a tightening torque
of 80 lb-ft (110 Nm).Before storing the jack, it should be fully
collapsed, with handle folded in (storage
position) (
page 358).
Store the jack and the other vehicle
tools in the trunk.
Warning!G
Only use genuine equipment
Mercedes-Benz wheel bolts. Other wheel
bolts may come loose.
Do not tighten the wheel bolts when the
vehicle is raised. Otherwise the vehicle
could fall off the jack.
Warning!G
Have the tightening torque checked after
changing a wheel. The wheels could come
loose if they are not tightened to a torque
of 80 lb-ft (110 Nm).

384 Practical hints
Battery
2Negative terminal
3Positive terminal cover
Disconnecting the battery
Apply the parking brake (page 54).
Make sure the gear selector lever* is
set to positionP (
page 153) (manual
transmission: to Neutral (
page 149)).
Turn off all electrical consumers.
Remove SmartKey from starter switch.
Open the hood (page 274).
Remove the filter box (page 383).
Read and observe safety instructions
and precautions (
page 279) and
(
page 383).
Disconnect the battery negative lead
from negative terminal2.
Remove cover3 from the positive
terminal.
Disconnect the battery positive lead.
Removing the battery
Remove the screw-nuts securing the
battery.
Remove the battery bracket.
Pull out the battery ventilation hose
from the battery (depending on battery
arrangement in your vehicle model, the
ventilation hose is located either on the
left or right side of the battery).
Take out the battery.
Warning!G
With a disconnected battery

you will no longer be able to turn the
SmartKey in the starter switch

automatic transmission*: the gear se-
lector lever will remain locked in
positionP
!Always disconnect the battery in the order
described below. Otherwise the vehicle’s
electronics can be damaged.

385 Practical hints
Battery
Charging and reinstalling the batteryCharge battery in accordance with the
instructions of the battery charger
manufacturer.
Reinstall the charged battery. Follow
the previously described steps in
reverse order.
Reconnecting the battery
Turn off all electrical consumers.
Remove SmartKey from starter switch.
Connect the battery positive lead and
fasten its cover3 (
page 384).
Connect the battery negative lead2
(
page 384).
Reinstall the filter box (page 383).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.
Warning!G
Never charge a battery while still installed in
the vehicle unless the accessory battery
charge unit approved by Mercedes-Benz is
being used. Gases may escape during charg-
ing and cause explosions that may result in
paint damage, corrosion or personal injury.
An accessory battery charge unit specially
adapted for Mercedes-Benz vehicles and
tested and approved by Mercedes-Benz is
available, permitting the charging of the bat-
tery in its installed position. Contact an au-
thorized Mercedes-Benz Center for
information and availability. Charge battery
in accordance with the separate instruc-
tions for the accessory battery charger.
!The battery, its filler caps and the battery
ventilation hose must always be securely in-
stalled when the vehicle is in operation.
!Always connect the battery in the order de-
scribed below. Otherwise the vehicle’s electron-
ics can be damaged.
!Never invert the terminal connections!
iThe following procedures must be carried
out following any interruption of battery power
(e.g. due to reconnection):

Set the clock (page 136).
Vehicles with COMAND*:
See COMAND operator’s manual.

Synchronize side windows (page 222).

Synchronize tilt/sliding sunroof*
(
page 226).

388 Practical hints
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.
!Vehicles with automatic transmission*
and/or 4MATIC:
Do not tow-start the vehicle.
!Use flatbed or wheel lift/dolly equipment
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 automatic central locking
(
page 143).
!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 gear selector lever* must be in po-
sition N (manual transmission: gear shift lever in
neutral position) and the engine must be shut off
(SmartKey in starter switch position0 or1). Oth-
erwise 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 transmission: gears disen-
gaged) 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).

389 Practical hints
Towing the vehicle
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 the igni-
tion 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 warn-
ing flasher will operate again.
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 ve-
hicle 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.
To prevent the vehicle doors from locking, deac-
tivate the automatic central locking
(
page 143).
Towing of the vehicle should only be done using
the properly installed towing eye bolt. Never at-
tach 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 information, see “Battery”
(
page 383) and “Jump starting”
(
page 386).

the gear selector lever will remain locked in
positionP. For information on manually un-
locking the transmission gear selector lever
see (
page 363).

392 Practical hints
Fuses
Main 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 coverOpening fuse boxOpen 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
3Retainer
Removing cover
Twist screws2
90° counterclockwise.
Lift the rear of cover1.
Slide out retainer3 and remove
cover1 by pulling towards front.