warning lights MERCEDES-BENZ C320 2003 W203 Owner's Manual

15 Introduction
Symbols
Symbols
The following symbols are found in this
Operator’s Manual:
* Optional equipment is identified
with an asterisk. Since standard
equipment varies between models,
the descriptions and illustrations in
this manual may differ slightly from
the actual equipment of your vehi-
cle.

This symbol points to instructions for
you to follow.

A number of these symbols appearing
in succession indicates a multiple-step
procedure.
 Page This symbol tells you where to
look for further information on a
topic.
This continuation symbol marks
an interrupted procedure which
will be continued on the next
page.
-> In the glossary of technical
terms, this symbol is used to
cross-reference term defini-
tions.
Display
Words appearing in the multi-
function display are printed in
the type shown here.
Warning!
G
Warning notices draw your attention to haz-
ards that may endanger your health or life,
or the health or life of others.!Highlights hazards that may result in
damage to your vehicle.iHelpful hints or further information you
may find useful.

39 Getting started
Adjusting
Mirrors
Adjust the inside and exterior rear view
mirrors before driving so that you have a
good view of the road and traffic condi-
tions.Inside rear view mirror

Manually adjust the inside rear view
mirror.
More information can be found in the
“Controls in detail” section (
page 144).
Exterior rear view mirrorThe buttons are located above the exterior
lamp switch.
1Driver’s side mirror
2Adjustment button
3Passenger side mirror

Make sure that the ignition is switched
on.
All the lights in the instrument cluster
light up.
Warning!
G
In the case of an accident liquid electrolyte
may escape the mirror housing if the mirror
glass breaks.
Electrolyte has an irritating effect. Do not al-
low the liquid to come into contact with
eyes, skin, clothing, or respiratory system.
In case it does, immediately flush affected
area with water, and seek medical help if
necessary.
Warning!
G
Exercise care when using the passenger
side exterior rear view mirror. The mirror
surface is convex (outwardly curved surface
for a wider field of view). Objects in mirror
are closer than they appear. Check your in-
side rear view mirror or glance over your
shoulder before changing lanes. !Electrolyte drops coming into contact
with the vehicle paint finish can only be
completely removed while in their liq-
uid state by applying plenty of water.


56 Safety and SecurityOccupant safety
Occupant safetyIn this section you will learn the most im-
portant facts about the restraint systems
of the vehicle.
The restraint systems are

Seat belts


Emergency tensioning device


Airbags


Child seats


Child seat recognition


Lower anchors and tethers for children
(LATCH)
As independent systems their protective
effects work in conjunction with each
other.The
1
warning lamp in the instrument
cluster (page 22) lights up:


for about four seconds when you turn
the key in the starter switch to
position1.


for about four seconds when you start
the engine by turning the key.The warning lamp goes out shortly after
you start the engine. This shows that the
restraint systems are operational.
A malfunction in the system has been
detected if the
1
warning lamp:


fails to extinguish after approximately
four seconds.


does not come on at all.


comes on after the engine was started
or while driving.
For safety reasons, we strongly
recommend that you visit an authorized
Mercedes-Benz Center immediately to
have the system checked.
More information can be found in the
“Practical hints” section (
page 257).
iFor information on infants and children
traveling with you in the vehicle and re-
straint systems for infants and chil-
dren, see “Children in the vehicle”
(page 65).
iThe warning lamp remains lit if the key
is turned to position2 and left there.
The warning lamp will go out when you
start the engine.

57 Safety and Security
Occupant safety
Airbags
Warning!
G
In the event that the SRS malfunction indica-
tor lamp lights up during driving or does not
come on at all, the SRS may not be opera-
tional. For your safety, we strongly recom-
mend that you visit an authorized
Mercedes-Benz Center immediately to have
the system checked; otherwise the SRS may
not be activated when needed in an acci-
dent, which could result in serious or fatal
injury, or it might deploy unexpectedly and
unnecessarily which could also result in
injury.
Improper work on the restraint systems,
including incorrect installation and removal,
can lead to possible injury through an unin-
tended activation of the SRS.
In addition, through improper work there is
a risk of rendering the SRS inoperative or
causing unintended airbag deployment.
Work on the SRS must therefore only be
performed by an authorized Mercedes-Benz
Center.
Warning!
G
Airbags are designed to reduce the potential
of injury in certain frontal (front airbags) im-
pacts, or side (side impact and head protec-
tion window curtain airbags) impacts which
may cause significant injuries. However, no
system available today can totally eliminate
injuries and fatalities.
The activation of the SRS temporarily releas-
es a small amount of dust from the airbags.
This dust, however, is neither injurious to
your health, nor does it indicate a fire in the
vehicle. The dust might cause some tempo-
rary breathing difficulty for people with asth-
ma or other breathing trouble. To avoid this,
you may wish to get out of the vehicle as
soon as it is safe to do so. If you have any
breathing difficulty but cannot get out of the
vehicle after the airbag inflates, then get
fresh air by opening a window or door.
Warning!
G
To reduce the risk of injury when the front
airbags inflate, it is very important for the
driver and front passenger to always be in a
properly seated position and to wear your
seat belts.
For maximum protection in the event of a
collision always be in normal seated position
with your back against the backrest. Fasten
your seat belt and ensure that it is properly
positioned on your body.
Since the airbag inflates with considerable
speed and force, a proper seating and hands
on steering wheel position will help to keep
you at a safe distance from the airbag. Oc-
cupants who are unbelted, out of position or
too close to the airbag can be seriously in-
jured by an airbag as it inflates with great
force in the blink of an eye:

61 Safety and Security
Occupant safety
Driver and passenger airbags are deployed

in the event of a frontal impact


if impact exceeds a preset deployment
threshold


independently of the side impact air-
bags
The airbags will not deploy in impacts
which do not exceed the system’s deploy-
ment thresholds. You will then be protect-
ed by the fastened seat belts.
The front passenger airbag will only be de-
ployed if


the front passenger seat is occupied


the
7
indicator lamp in the center
console is not lit (
page 67)Side impact airbags, window curtain
airbags
3Side impact airbags
4Window curtain airbag
The side impact airbags and window cur-
tain airbags are deployed


on the impacted side of the vehicle


in impacts exceeding a preset deploy-
ment threshold


independently of the front airbagsThe front passenger side airbag will only
deploy if the system senses that the front
passenger seat is occupied.
The side impact airbags are not deployed
in impacts which do not exceed the sys-
tem’s deployment threshold.
Seat belts
The seat belt nonusage warning lamp
<

in the instrument cluster lights up and a
warning sounds for a short time when you
turn the key in the starter switch to
position2 and the driver‘s seat belt is not
fastened.
After starting the engine the seat belt non-
usage warning lamp blinks for a brief peri-
od to remind the driver and passengers to
fasten the seat belts.
!Do not place objects heavier than
20 lbs (9 kg) on the front passenger
seat. This could cause the front or side
impact airbag on the front passenger
side to deploy in a crash which exceeds
the system's deployment threshold.

67 Safety and Security
Occupant safety
BabySmart
TM
airbag deactivation
system
Special BabySmart
TM compatible child
seats, designed for use with the
Mercedes-Benz system and available at
any authorized Mercedes-Benz Center are
required for use with the BabySmart
TM air-
bag deactivation system. With the special
child seat properly installed, the passenger
front airbag will not deploy.
BabySmart
TM is a trademark of Siemens
Automotive Corp.
The
7
indicator lamp located in the
center console will be illuminated, except
with the key removed or in the starter
switch position0.
Self-test BabySmart
TM
without special
child seat installed
After turning the key in the starter switch
to position1 or2, the7
indicator lamp
located in the center console lights up for
approx. six seconds and then goes out.
If the indicator lamp should not come on or
is continuously lit, the system is not func-
tioning. You must see an authorized
Mercedes-Benz Center before seating any
child on the passenger seat.
More information can be found in the
“Practical hints” section (page 260).
iThe system does not deactivate the
side impact airbag.
Warning!
G
The BabySmart
TM airbag deactivation sys-
tem will ONLY work with a special child seat
designed to operate with it. It will not work
with child seats which are not BabySmart
TM
compatible.
Never place anything between seat cushion
and child seat (e.g. pillow), since it reduces
the effectiveness of the deactivation sys-
tem. The bottom of the child seat must
make full contact with the passenger seat
cushion. An incorrectly mounted child seat
could cause injuries to the child in case of an
accident, instead of protecting the child.
Follow the manufacturer’s instructions for
installation of special child seats.
When using a BabySmart
TM compatible
child seat on the front passenger seat, the
front passenger airbag will not deploy only if
the
7
indicator lamp remains illuminat-
ed.

74 Safety and SecurityDriving safety systemsContinuous steady brake pedal pressure
yields the advantages provided by the ABS,
namely braking power and ability to steer
the vehicle.
On slippery road surfaces, the ABS will re-
spond even with light brake pressure. The
pulsating brake pedal can be an indication
of hazardous road conditions and func-
tions as a reminder to take extra care while
driving.ABS control
The
-
malfunction indicator lamp in
the speedometer lights up when you turn
the key in the starter switch to position2.
It goes out when the engine is running.
More information can be found in the
“Practical hints” section (
page 257).
BAS
The Brake Assist System (BAS) operates in
emergency situations. If you apply the
brakes very quickly, the BAS automatically
provides full brake boost, thereby poten-
tially reducing the braking distance. Apply
continuous full braking pressure until the
emergency braking situation is over. The
ABS will prevent the wheels from locking.
When you release the brake pedal, the
brakes function again as normal. The BAS
is then deactivated.
iTo alert following vehicles to slippery
road conditions you discover, operate
your hazard warning flashers as appro-
priate.
Warning!
G
The ABS cannot prevent the natural laws of
physics from acting on the vehicle, nor can
it increase braking or steering efficiency be-
yond that afforded by the condition of the
vehicle brakes and tires or the traction. The
ABS cannot prevent accidents, including
those resulting from excessive speed in
turns, following another vehicle too closely,
or aquaplaning. Only a safe, attentive, and
skillful driver can prevent accidents. The ca-
pabilities of an ABS equipped vehicle must
never be exploited in a reckless or danger-
ous manner which could jeopardize the us-
er’s safety or the safety of others.

75 Safety and Security
Driving safety systems
ESP
The Electronic Stability Program (ESP)
monitors the vehicle's traction (force of
adhesive friction between the tires and the
road surface) and handling.
The ESP recognizes when a wheel is spin-
ning or if the vehicle starts to skid. By ap-
plying brakes to the appropriate wheel and
by limiting engine output, the ESP works to
stabilize the vehicle. The ESP is especially
useful while driving off and on wet or slip-
pery road surfaces.
The ESP warning lamp
v
in the speed-
ometer dial flashes when the ESP is en-
gaged.
The ESP warning lamp
v
in the speed-
ometer dial lights up when you turn the key
in the starter switch to position2. It goes
out when the engine is running.
Warning!
G
The BAS cannot prevent the natural laws of
physics from acting on the vehicle, nor can
it increase braking efficiency beyond that af-
forded by the condition of the vehicle brakes
and tires or the traction. The BAS cannot
prevent accidents, including those resulting
from excessive speed in turns, following an-
other vehicle too closely, or hydroplaning.
Only a safe, attentive, and skillful driver can
prevent accidents. The capabilities of a BAS
equipped vehicle must never be exploited in
a reckless or dangerous manner which
could jeopardize the user’s safety or the
safety of others.
Warning!
G
Never switch off the ESP when you see the
ESP warning lamp
v
flashing in the
speedometer dial. In this case proceed as
follows:


While driving off, apply as little throttle
as possible.


While driving ease up on the accelera-
tor.


Adapt your speed and driving style to
the prevailing road conditions.
Failure to observe these guidelines could
cause the vehicle to skid.
The ESP cannot prevent accidents resulting
from excessive speed.

77 Safety and Security
Driving safety systems
The switch is located on the center con-
sole.
1ESP off
2ESP on
Press upper half1 of the ESP switch
until the ESP warning lamp
v
in the
speedometer lights up.
ESP is deactivated.If one or more drive wheels are spinning,
the ESP warning lamp
v
in the speed-
ometer flashes, regardless of the speed.
Traction control brakes a spinning wheel
even when ESP is deactivated.
ESP always operates when you are brak-
ing, even when it has been deactivated.
Switching on the ESP

Press lower half2 of the ESP switch
until the ESP warning lamp
v
in the
speedometer goes out.
You are now again in normal driving
mode.
!Avoid spinning of a drive wheel for an
extended period with the ESP switched
off. This may cause serious damage to
the drive train which is not covered by
the Mercedes-Benz Limited Warranty.
Warning!
G
When the ESP warning lamp
v
is
illuminated continuously, the ESP is
switched off.
Adapt your speed and driving to the prevail-
ing road conditions and to the non-operating
status of the ESP.

102 Controls in detailLightingManual headlamp mode
The low beam headlamps and parking
lamps can be switched on and off with the
exterior lamp switch. For exterior lamp
switch, see above.
Automatic headlamp mode
The parking lamps, low beam headlamps
and license plate lamps switch on and off
automatically depending on the brightness
of the ambient light.
Turn the exterior lamp switch to
U
.
Warning!
G
In automatic headlamp mode, the head-
lamps will not be automatically switched on
under foggy conditions. To minimize risk to
you and to others, activate headlamps by
turning exterior lamp switch to
B
.
The driver is responsible for the operation of
the vehicle’s lights at all times. The automat-
ic headlamp feature is only an aid to the
driver. Switch on the vehicle lights manually
when driving or when traffic conditions
require you to do so.
iWith the daytime running lamp mode
activated, the low beam headlamps will
not be switched off automatically.
iFront fog lamps and rear fog lamp can
not be switched on manually with exte-
rior lamp switch in position
U
. To
activate the fog lamps, turn exterior
lamp switch to position
B
.
iIf you drive in countries where vehicles
drive on the other side of the road than
the country where the vehicle is regis-
tered, you must have the headlamps
modified for symmetrical low beams.
Relevant information can be obtained
at your authorized Mercedes-Benz Cen-
ter.