2003 MERCEDES-BENZ C320 4MATIC WAGON low oil

276 Practical hintsWhat to do if …Display
Possible cause
Suggested solution
<
DRIVER’S SEAT BELT
FASTEN SEAT BELT!
The display reminds you and your pas-
sengers to fasten seat belts.

Fasten the seat belts.
_
STEERING WHEEL ADJUST
LOCK!
The steering column is not properly
locked.

Lock the steering column properly
(page 37).
POWER STEERING FLUID
VISIT WORKSHOP!
The steering gear oil level is too low.
There is a danger of steering gear dam-
age.

Have the system checked by an au-
thorized Mercedes-Benz Center.
Warning!
G
If the level of steering gear oil in reservoir is
too low, the steering power assistance could
fail. Much greater effort will then be needed
to turn the steering wheel.
Do not add steering oil without checking the
steering system.
Do not drive the vehicle. Have the system
checked at your authorized Mercedes-Benz
Center as soon as possible.
S203 MY03_A.book Page 276 Tuesday, January 28, 2003 2:22 PM

293 Practical hints
Replacing bulbs
Rear lamps Notes on bulb replacement


Use only 12 volt bulbs of the same type
and with the specified watt rating.


Switch lights off before changing a bulb
to prevent short circuits.


Always use a clean lint-free cloth when
handling bulbs.


Your hands should be dry and free of oil
and grease.


If the newly installed bulb does not light
up, visit an authorized Mercedes-Benz
Center.


Have the LEDs and bulbs for the follow-
ing lamps replaced by an authorized
Mercedes-Benz Center:

Additional turn signals in the
exterior rear view mirrors


High mounted brake lamp


Xenon lamps


Front fog lamps
Lamp
Type
7
High mounted brake
lamp
LED
8
Brake lamp
P21W
9
Turn signal lamp
PY 21 W
10
Backup lamp
P21W
11
Tail, parking, stand-
ing and side marker
lamp
P21/4W
12
License plate lamps
C5W
13
Rear fog lamp,
driver’s side
P21/4W
Warning!
G
Keep bulbs out of reach of children.
Bulbs and bulb sockets can be very hot. Al-
low the lamp to cool down before changing
a bulb.
Halogen lamps contain pressurized gas.
A bulb can explode if you:

touch or move it when hot


drop the bulb


scratch the bulb
Wear eye and hand protection.
Because of high voltage in Xenon lamps, it is
dangerous to replace the bulb or repair the
lamp and its components. We recommend
that you have such work done by a qualified
technician.
S203 MY03_A.book Page 293 Tuesday, January 28, 2003 2:22 PM

303 Practical hints
Flat tire

Unscrew the alignment bolt, install last
wheel bolt and tighten slightly.Minispare wheel
In the case of a flat tire, you may tempo-
rarily use the Minispare wheel when ob-
serving the following restrictions:


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


Drive to the nearest tire repair facility
to have the flat tire repaired or re-
placed as appropriate.


Do not operate vehicle with more than
one spare wheel mounted.
Warning!
G
Always replace wheel bolts that are dam-
aged or rusted.
Never apply oil or grease to wheel bolts.
Damaged wheel hub threads should be re-
paired immediately. Do not continue to drive
under these circumstances! Contact an au-
thorized Mercedes-Benz Center or call
Roadside Assistance.
Incorrect mounting bolts or improperly
tightened mounting bolts can cause the
wheel to come off. This could cause an acci-
dent. Be sure to use the correct mounting
bolts.
Warning!
G
Use only genuine equipment
Mercedes-Benz wheel bolts. They are identi-
fied by the Mercedes star. Other wheel bolts
may come loose.
Do not tighten the wheel bolts when the ve-
hicle is raised. Otherwise the vehicle could
tip over.
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 tempo-
rarily, and replaced with a regular road
wheel as quick as possible.
S203 MY03_A.book Page 303 Tuesday, January 28, 2003 2:22 PM

329 Technical data
Fuels, coolants, lubricants etc.
Model
Capacity
Fuels, coolants, lubricants etc.
Fuel tank
including a reserve of
16.4 US gal (62.0 l)
2.1 US gal (8.0 l)
Premium unleaded gasoline:
Posted Octane 91 (Avg. of 96 RON / 86 MON)Flexible Fuel Vehicle (MY 2003 Mercedes-Benz C 320
models, except those equipped with manual transmission or
4MATIC*):
Alternative fuel -- ethanol fuel (E85)
Air conditioner system
R-134a refrigerant and special PAG lubricant oil (never R-12)
Windshield washer and
headlamp cleaning
system:
Without headlamp
cleaning system
With headlamp cleaning
system
3.2 US qt (3 l)
6.4 US qt (6 l)
MB Windshield Washer Concentrate
1
1Use MB Windshield Washer Concentrate “S” and water for temperatures above freezing or MB Windshield Washer Concentrate “S” and commercially available pre-
mixed windshield washer solvent/antifreeze for temperatures below freezing. Follow suggested mixing ratios (
page 336).
S203 MY03_A.book Page 329 Tuesday, January 28, 2003 2:22 PM

330 Technical dataFuels, coolants, lubricants etc.Engine oils
Engine oils are specifically tested for their
suitability in our engines. Therefore, use
only engine oils recommended by
Mercedes-Benz. Information on recom-
mended brands is available in the Factory
Approved Service Products pamphlet, or at
your authorized Mercedes-Benz Center.
Please follow FSS recommendations for
scheduled oil changes. Failure to do so
could result in engine damage not covered
by the Mercedes-Benz Limited Warranty.
Engine oil additives
Do not blend oil additives with engine oil.
They may be harmful to the engine opera-
tion.
Damage or malfunctions resulting from
blending oil additives are not covered by
the Mercedes-Benz Limited Warranty.Air conditioning refrigerant
R-134a (HFC) refrigerant and special PAG
lubricating oil is used in the air conditio-
ning system.
Never use R-12 (CFC) or mineral-based lu-
bricating oil, otherwise damage to the
system will occur.
Brake fluid
During vehicle operation, the boiling point
of the brake fluid is continuously reduced
through the absorption of moisture from
the atmosphere. Under extremely strenu-
ous operating conditions, this moisture
content can lead to the formation of bub-
bles in the system, thus reducing the sys-
tem’s efficiency.
Therefore, the brake fluid must be re-
placed every two years, preferably in the
spring.
Only brake fluid approved by
Mercedes-Benz is recommended. Your au-
thorized Mercedes-Benz Center will pro-
vide you with additional information.
S203 MY03_A.book Page 330 Tuesday, January 28, 2003 2:22 PM

331 Technical data
Fuels, coolants, lubricants etc.
Premium unleaded gasoline
Fuel requirements
Use only Premium unleaded meeting
ASTM standard D 439:

The octane number (posted at the
pump) must be 91 min. It is an average
of both the Research (R) octane num-
ber and the Motor (M) octane number:
(R+M) / 2). This is also known as the
ANTI-KNOCK INDEX.Unleaded gasoline containing oxygenates
such as Ethanol, IPA, IBA and TBA can be
used provided the ratio of any one of these
oxygenates to gasoline does not exceed
10%; MTBE not to exceed 15%.
The ratio of Methanol to gasoline must not
exceed 3% plus additional cosolvents.
Using mixtures of Ethanol and Methanol is
not allowed. Gasohol, which contains 10%
Ethanol and 90% unleaded gasoline, can be
used.
These blends must also meet all other fuel
requirements, such as resistance to spark
knock, boiling range, vapor pressure etc.
!To maintain the engine’s durability and
performance, premium unleaded gaso-
line must be used. If premium unleaded
is not available and low octane fuel is
used, follow these precautions:

Have the fuel tank only partially
filled with unleaded regular and fill
up with premium unleaded as soon
as possible.


Avoid full throttle driving and abrupt
acceleration.


Do not exceed an engine speed of
3 000 rpm if the vehicle is loaded
with a light load such as two per-
sons and no luggage.


Do not exceed
2/3 of maximum ac-
celerator pedal position if the vehi-
cle is fully loaded or operating in
mountainous terrain.
iMY 2003 Mercedes-Benz C 320 mod-
els, except those equipped with manu-
al transmission or 4MATIC*, are
Flexible Fuel Vehicles.
These vehicles are designed to operate
on premium unleaded gasoline or Etha-
nol fuel (E85), or on any mixture of
these two.
See notes on Flexible Fuel Vehicles
(page 332).
S203 MY03_A.book Page 331 Tuesday, January 28, 2003 2:22 PM

334 Technical dataFuels, coolants, lubricants etc.Coolants
The engine coolant is a mixture of water
and anticorrosion/antifreeze, which pro-
vides:

Corrosion protection


Freeze protection


Boiling protection (by increasing the
boiling point)
The cooling system was filled at the factory
with a coolant providing freeze protection
to approximately -22°F (-30°C) and corro-
sion protection.
If the antifreeze mixture is effective to
-22°F (-30°C), the boiling point of the cool-
ant in the pressurized cooling system is
reached at approximately 266°F (130°C).The coolant solution must be used
year-round to provide the necessary corro-
sion protection and increase boil-over pro-
tection. You should have it replaced every
15 years or 150 000 miles (250 000 km),
whichever comes first.
Coolant system design and coolant used
stipulate the replacement interval. The
above replacement interval is only applica-
ble if MB 325.0 Anticorrosion/Antifreeze
solution or other Mercedes-Benz approved
products of equal specification (see Facto-
ry Approved Service Products pamphlet)
are used to renew the coolant concentra-
tion or bring it back up to the proper level.
To provide important corrosion protection,
the solution must be at least 45% anticor-
rosion/antifreeze (equivalent to freeze
protection to approx. - 22°F [-30°C]). If
you use a solution that is more than 55%
anticorrosion/antifreeze (freeze protec-
tion to approx. - 49°F [-45°C]), the engine
temperature will increase due to the lower heat transfer capability of the solution.
Therefore, do not use more than this
amount of anticorrosion/antifreeze.
If the coolant level is low, water and
MB 325.0 anticorrosion/antifreeze should
be used to bring it up to the proper level
(have cooling system checked for signs of
leakage). Please make sure that the mix-
ture is in accordance with label instruc-
tions.
The water in the cooling system must meet
minimum requirements, which are usually
satisfied by normal drinking water. If you
are not sure about the water quality, con-
sult your authorized Mercedes-Benz
Center.
S203 MY03_A.book Page 334 Tuesday, January 28, 2003 2:22 PM

340 Technical termsCOMAND*
(Cockpit Management and Data Sys-
tem)
Information and operating center for
vehicle sound and communications
systems, including the radio and navi-
gation system, as well as for other op-
tional equipment (CD changer*,
telephone*, etc.).
Control system
The control system is used to call up vehi-
cle information and to change component
settings. Information and messages ap-
pear in the multifunction display. The driv-
er uses the buttons on the multifunction
steering wheel to navigate through the sys-
tem and to adjust settings.
Cruise control
Driving convenience system for automati-
cally maintaining the vehicle speed set by
the driver.Engine number
The number set by the manufacturer and
placed on the cylinder block to uniquely
identify each engine produced.
Engine oil viscosity
Measurement for the inner friction (viscos-
ity) of the oil at different temperatures. The
higher the temperature an oil can tolerate
without becoming thin, or the lower the
temperature it can tolerate without be-
coming viscous, the better the viscosity.
ESP
(Electronic Stability Program)
Improves vehicle handling and direc-
tional stability.
ETD
(Emergency Tensioning Device)
Device which deploys in certain frontal
and rear collisions exceeding the sys-
tem's threshold to tighten the seat
belts.
->SRSFSS
(Flexible Service System)
Service indicator in the multifunction
display that informs the driver when
the next vehicle maintenance service is
due.
Gear range
Number of gears which are available to the
automatic transmission for shifting. The
automatic gear shifting process can be
adapted to specific operating conditions
using the selector lever.
GPS
(Global Positioning System)
Satellite-based system for relaying
geographic location information to and
from vehicles equipped with special re-
ceivers. Employs CD digital maps for
navigation.S203 MY03_A.book Page 340 Tuesday, January 28, 2003 2:22 PM