flat tire MERCEDES-BENZ C320 2004 W203 Owner's Manual

ContentsOperation......................................... 237
The first 1 000 miles (1 500 km) ......... 238
Driving instructions ............................ 239
Drive sensibly – save fuel ............. 239
Drinking and driving ..................... 239
Pedals .......................................... 239
Power assistance ......................... 239
Brakes .......................................... 240
Driving off..................................... 241
Parking ......................................... 241
Tires ............................................. 242
Hydroplaning ................................ 242
Tire traction .................................. 243
Tire speed rating .......................... 243
Winter driving instructions ........... 244
Standing water ............................. 245
Passenger compartment .............. 246
Driving abroad .............................. 246
Control and operation of radio
transmitters.................................. 246
Catalytic converter ....................... 247
Emission control........................... 247
Coolant temperature .................... 248At the gas station .............................. 249
Refueling ...................................... 249
Check regularly and before
a long trip ..................................... 251
Engine compartment ......................... 252
Hood ............................................ 252
Engine oil ..................................... 253
Transmission fluid level ................ 256
Coolant level ................................ 257
Battery ......................................... 258
Windshield washer system and
headlamp cleaning system* ......... 259
Tires and wheels ................................ 260
Important guidelines .................... 260
Life of tire..................................... 261
Direction of rotation ..................... 261
Checking tire inflation pressure ... 261
Rotating wheels ........................... 262Winter driving .................................... 263
Winter tires .................................. 263
Block heater (Canada only) .......... 264
Snow chains................................. 264
Maintenance...................................... 265
Clearing the service indicator ...... 265
Service term exceeded ................ 265
Calling up the service indicator .... 266
Resetting the service indicator .... 266
Vehicle care....................................... 267
Cleaning and care of the vehicle .. 267

Contents
Practical hints................................ 273
What to do if … .................................. 274
Lamps in instrument cluster ........ 274
Lamp in center console................ 279
Messages in the display ............... 280
Where will I find ...? ........................... 300
First aid kit ................................... 300
Vehicle tool kit ............................. 300
Minispare wheel ........................... 302
Unlocking/locking in an emergency .. 305
Unlocking the vehicle ................... 305
Locking the vehicle ...................... 306
Changing batteries in
the SmartKey ............................... 307
Fuel filler flap ............................... 308
Manually unlocking the
transmission gear selector lever .. 308
Opening/closing in an emergency..... 309
Sliding/pop-up roof* ................... 309Replacing bulbs .................................. 310
Bulbs ............................................. 310
Replacing bulbs for front lamps .... 312
Side marker lamp bulb .................. 314
Replacing bulbs for rear lamps ..... 315
Replacing wiper blades....................... 316
Removing wiper blades ................. 316
Installing wiper blades .................. 316
Flat tire ............................................... 317
Preparing the vehicle .................... 317
Mounting the Minispare wheel...... 317
Battery................................................ 323
Disconnecting the battery............. 324
Removing the battery.................... 324
Charging and reinstalling
the battery .................................... 324
Reconnecting the battery.............. 325Jump starting...................................... 326
Towing the vehicle.............................. 328
Installing towing eye bolt .............. 331
Fuses.................................................. 332
Fuse box in
passenger compartment ............... 332
Fuse box in engine compartment . 333
Auxiliary fuse box in trunk ............ 334

227 Controls in detail
Useful features
system mutes and the message
TELE AID
– ROADSIDE ASSISTANCE CALL ACTIVE

appears in the multifunction display.

Describe the nature of the need for
assistance.
The Mercedes-Benz Roadside Assistance
dispatcher will either dispatch a qualified
Mercedes-Benz technician or arrange to
tow your vehicle to the nearest authorized
Mercedes-Benz Center. For services such
as labor and/or towing, charges may
apply. Refer to the Roadside Assistance
manual for more information.
These programs are only available in the
USA:


Sign and Drive services: Services such
as jump start, a few gallons of fuel or
the replacement of a flat tire with the
vehicle spare tire are obtainable.


Remote Vehicle Diagnostics: This
function permits the Mercedes-Benz
Roadside Assistance dispatcher to
download malfunction codes and
actual vehicle data.Information button¡
Located below the center armrest cover is
the Information button¡.

Press and hold button (for longer than
two seconds).
A call to the Customer Assistance
Center will be initiated. The button will
flash while the call is in progress. The
message
INFO – CONNECTING CALL
will
appear in the multifunction display.
When the connection is established, the
message
INFO – CALL CONNECTED
appears
in the multifunction display. The Tele Aid
system will transmit data generating the
vehicle identification number, model, color
and location (subject to availability of
cellular and GPS signals).
iThe indicator lamp on the Roadside
Assistance button• remains illumi-
nated in red for approximately ten sec-
onds during the system self-check after
turning the SmartKey in the starter
switch to position2 (together with the
SOS button and the Information
button¡).
See system self-check (
page 224)
when the indicator lamp does not come
on in red or stays on longer than
approximately ten seconds.
If the indicator lamp on the Roadside
Assistance button• is illuminated
continuously and there was no voice
connection to the Response Center
established, then the Tele Aid system
could not initiate a Roadside Assis-
tance call (e.g. the relevant cellular
phone network is not available). The
message
TELE DIAGNOSIS – CALL
FAILED
appears in the multifunction
display.
Roadside Assistance calls can be
terminated using the ìbutton on
the multifunction steering wheel.

242 OperationDriving instructionsTires
Tread wear indicators (TWI) are required by
law. These indicators are located in six
places on the tread circumference and
become visible at a tread depth of
approximately
1/16
in (1.6 mm), at which
point the tire is considered worn and
should be replaced.The tread wear indicator appears as a solid
band across the tread.
Specified tire pressures must be main-
tained. This applies particularly if the tires
are subjected to high loads (e.g. high
speeds, heavy loads, high ambient temper-
atures).
Hydroplaning
Depending on the depth of the water layer
on the road, hydroplaning may occur, even
at low speeds and with new tires. Reduce
vehicle speed, avoid track grooves in the
road and apply brakes cautiously in the
rain.
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-
tion to an area which is a safe distance from
the road.
Inspect the tires and the vehicle underbody
for possible damage. If the vehicle or tires
appear unsafe, have it towed to the nearest
Mercedes-Benz Center or tire dealer for
repairs.
Warning!
G
Although the applicable federal motor
vehicle safety laws consider a tire to be
worn when the tread wear indicators (TWI)
become visible at approximately
1/16in
(1.6 mm), we recommend that you do not
allow your tires to wear down to that level.
As tread depth approaches
1/8in (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.
Warning!
G
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle. You
may lose control of the vehicle. Continued
driving with a flat tire or driving at high
speed with a flat tire will cause excessive
heat build-up and possibly a fire.

251 Operation
At the gas station
Check regularly and before a long trip
1Coolant level
For more information on coolant, see
“Coolant level” (
page 257).
2Brake fluid (fuse box cover removed)
Removing fuse box cover
(
page 333).
3Windshield washer and headlamp
cleaning system*
For more information on filling up the
washer reservoir, see “Windshield
washer system and headlamp cleaning
system*” (
page 259).Engine oil level
For more information on engine oil level,
see “Engine oil” (
page 253).
Opening hood (
page 252).
Vehicle lighting
Check function and cleanliness. For more
information on replacing light bulbs, see
“Replacing bulbs” (page 310).
Exterior lamp switch (page 102).
Tire inflation pressure
More information on tire inflation pressure
(
page 261).
!If you find that the brake fluid in the
brake fluid reservoir has fallen to the
minimum mark or below, have the
brake system checked for brake pad
thickness and leaks immediately.
Notify an authorized Mercedes-Benz
Center immediately. Do not add brake
fluid as this will not solve the problem.
For more information, see “Practical
hints” (
page 275).

261 Operation
Tires and wheels
Life of tire
The service life of a tire is dependent upon
varying factors including but not limited to:

Driving style


Tire pressure


Distance driven
Direction of rotation
Unidirectional tires offer added advan-
tages, such as better hydroplaning perfor-
mance. To benefit, however, you must
make sure the tires rotate in the direction
specified.
An arrow on the sidewall indicates the
intended direction of tire rotation.Checking tire inflation pressure
Correct the tire pressure only when tires
are cold.
Regularly check your tire pressure at
intervals of no more than 14 days. If the tires are warm you should only
correct the tire pressure if it is too low for
current operating conditions.
A table on the fuel filler flap lists the
specified tire inflation pressures for warm
and cold tires as well as for various
operating conditions.
Warning!
G
Tires and spare tire should be replaced after
six years, regardless of the remaining tread.!Keep unmounted tires in a cool, dry
place with as little exposure to light as
possible. Protect tires from contact
with oil, grease and gasoline.
Warning!
G
If the tire pressure drops repeatedly:

Check the tires for punctures from
foreign objects.


Check to see whether air is leaking from
the valves or from around the rim.
iThe pressures listed for light loads are
minimum values offering high driving
comfort.
Increased inflation pressures listed for
heavier loads may also be used for light
loads. These higher pressures produce
favorable handling characteristics. The
ride of the vehicle, however, will be
somewhat harder. Never exceed the
max. values or inflate tires below the
min. values listed in the fuel filler flap.

262 OperationTires and wheelsTire pressure changes by approx. 1.5 psi
(0.1 bar) per 18°F (10°C) of air tempera-
ture change. Keep this in mind when
checking tire pressure where the tempera-
ture is different from the outside tempera-
ture.
Tire temperature and tire pressure are also
increased while driving, depending on the
driving speed and the tire load.
Check the spare tire periodically for condi-
tion and inflation. Spare tires will age and
become worn over time even if never used,
and thus should be inspected and replaced
when necessary.
Rotating wheels
On vehicles with the same wheel size all
around, wheels can be rotated every 3 000
to 6 000 miles (5 000 to 10 000 km), or
sooner if necessary, according to the
degree of tire wear. The same direction of
tire rotation must be retained.Rotate the wheels before the characteris-
tic tire wear pattern becomes visible
(shoulder wear on front wheels and tread
center wear on rear wheels).
Thoroughly clean the inner side of the
wheels after each rotation. Check and
ensure proper tire inflation pressure.
Warning!
G
Follow recommended inflation pressures.
Do not overinflate tires. Overinflated tires
can result in sudden deflation (blowout)
because they are more likely to become
punctured or damaged by road debris,
potholes, etc.
Do not underinflate tires. Underinflated tires
wear unevenly, adversely affect handling
and fuel economy, and are more likely to fail
from being overheated.
Do not overload the tires by exceeding the
specified vehicle capacity weight (as indi-
cated by the label on the pillar in the driver’s
door opening). Overloading the tires can
overheat them, possibly causing a blowout.Warning!
G
Rotate front and rear wheels only if they are
of the same size.
Warning!
G
Have the tightening torque checked after
changing a wheel. Wheels could become
loose if not tightened with a torque of
80 lb-ft (110 Nm).
Only use genuine Mercedes-Benz wheel
bolts specified for your vehicle's rims.

273 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 hintsWhere will I find ...?In the case of a flat tire, you may
temporarily use the Minispare wheel when
observing the following restrictions:

Do not exceed a vehicle speed of
50 mph (80 km/h).


Drive to the nearest tire repair facility
to have the flat tire repaired or
replaced as appropriate.


Do not operate vehicle with more than
one Minispare wheel mounted.
For more information, see “Rims and Tires”
(
page 342).Minispare wheel bolts
1Wheel bolt for light alloy rims
2Wheel bolt for Minispare wheel or other
steel rims (located in trunk with spare
wheel)
!Wheel bolts2 must be used when
mounting the Minispare wheel or other
steel rims. The use of any wheel bolts
other than wheel bolts2 for the
Minispare wheel or other steel rims will
physically damage the vehicle’s
brakes. Warning!
G
Make sure to use the original length wheel
bolts when remounting the original wheel
after it has been repaired.

317 Practical hints
Flat tire
Flat tire
Preparing the vehicle
Park the vehicle as far as possible from
moving traffic on a hard surface.

Turn on the hazard warning flashers.

Engage the steering wheel lock in the
straight ahead position and set the
parking brake.

Move the gear selector lever toP
(manual transmission to first or reverse
gear).

Have any passenger exit the vehicle at
a safe distance from the roadway.
Mounting the Minispare wheel
In the case of a flat tire, you may
temporarily use the Minispare wheel when
observing the following restrictions:

Do not exceed vehicle speed of 50 mph
(80 km/h).


Drive to the nearest tire repair facility
to have the flat tire repaired or
replaced as appropriate.


Do not operate vehicle with more than
one spare wheel mounted.Preparing the vehicle
Prepare the vehicle as described on
(
page 317).

Take the wheel wrench and the jack
out of the vehicle tool kit storage well
casing underneath the trunk floor
(page 300).

Take the Minispare wheel and wheel
bolts out of the storage compartment
underneath the trunk floor
(page 302).
Lifting the vehicle

Prevent the vehicle from rolling away
by blocking wheels with wheel chocks
(not included) or other sizable objects.
When changing wheel on a level surface:

Place one chock in front of and one
behind the wheel that is diagonally
opposite to the wheel being changed.
When changing wheel on a hill:

Place chocks on the downhill side
blocking both wheels of the other axle.
Warning!
G
The dimensions of the Minispare wheel are
different from those of the road wheels. As
a result, the vehicle handling characteristics
change when driving with a Minispare wheel
mounted.
The spare wheel should only be used
temporarily, and replaced with a regular
road wheel as quick as possible.