2003 MERCEDES-BENZ ML320 warning light

145 Controls in detail
Loading
Roof rack*Roof rails
For further information inquire at your
Mercedes-Benz Light Truck Center.
Warning!
G
Take into consideration that when the roof
rack is loaded, the handling characteristics
are different from those when operating the
vehicles without the roof rack loaded.
The maximum roof load when using roof
rack systems is 220 lbs. (100 kg).
!Attach roof racks to the roof rails only.
Use only those roof racks approved by
Mercedes-Benz for your vehicle model.
Follow manufacturer’s installation in-
structions.
The vehicle could otherwise be dam-
aged.

150 Controls in detailDriving systemsMonitoring reach of sensors
The sensors must be free of dirt, ice and
snow or they will be unable to function
properly. Clean the sensors regularly with-
out scratching or damaging them.Front sensors
Rear sensors
Minimum distance
When an obstacle is located in this area, all
warning displays will light up and a warning
tone will sound. If the vehicle moves closer
than the minimum distance to an object,
the distance may no longer be displayed.Warning indicators
The warning indicators show the distance
between the sensor and the obstacle. The
warning indicators for the front area are lo-
cated above the center air outlets in the
dashboard. The warning indicator for the
rear area is located in the rear passenger
compartment lamp.
1Segments, left side of vehicle
2Segments, right side of vehicle
Each warning indicator has 6 yellow and 2
red segments.
Center
40 in (100 cm)
Corner
24 in (60 cm)
Center
48 in (120 cm)
Corner
32 in (80 cm)
Center
6 in (15 cm)
Corner
8 in (20 cm)

151 Controls in detail
Driving systems
The selector lever position determines
which warning indicator is activated.
As soon as the sensors detect an obstacle,
one or more segments light up, depending
on the distance. An intermittent acoustic
warning will also sound as the seventh seg-
ment lights up and a constant acoustic
warning lasting a maximum of 3 seconds
will sound for the eighth segment.Switching Parktronic on/off
You can switch Parktronic off manually.
The switch is located on the lower part of
the center console.
1Switching off
2Indicator lamp
3Switching onSwitching Parktronic off

Press switch on the upper part1.
Indicator lamp2 lights up.
Switching Parktronic on

Press switch on the upper part3.
The indicator lamp2 goes out.
Selector lever
position
Warning indicator
D
Front area activated
R
Rear area activated
N or P
No area activated
!If all red segments light up in the warn-
ing indicators, a dirty sensor or a ultra-
sonic signal could be the reason.

Clean the sensors (
page 220).
After cleaning the sensors, switch
the ignition on.
!If Parktronic is malfunctioning, all red
segments of the warning indicators
light up and an additional warning
sounds.
Contact your Mercedes-Benz Light
Truck Center as soon as possible.
iIf you switch the ignition on, Parktronic
will be automatically switched on.
The rear Parktronic sensors will not au-
tomatically disengage when towing a
trailer. Therefore switch Parktronic off.

156 Controls in detailUseful featuresAshtrays and cigarette lighter Ashtray and cigarette lighter in the
front center console
1Ashtray
2Cigarette lighter
3Cover plate
Opening the ashtray

Briefly touch cover plate3.
The ashtray opens automatically.Removing ashtray insert

Secure vehicle from movement by set-
ting the parking brake. Move the selec-
tor lever to positionN.
Now you have more room to take out
the insert.

Grip the insert on the sides and pull it
out upwards.
Reinstalling ashtray insert

Install ashtray insert.

Close the ashtray.
Warning!
G
Never touch the heating element or sides of
the cigarette lighter; they are extremely hot.
Hold the knob only.
When leaving the vehicle always remove the
key from the steering lock. Do not leave chil-
dren unattended in the vehicle, or with ac-
cess to an unlocked vehicle. Unsupervised
use of vehicle equipment may cause an ac-
cident and/or serious personal injury.iThe cigarette lighter socket can be
used to accommodate electrical acces-
sories up to a maximum of 50 W.
If the engine is off, the battery may be-
come discharged when used for long
periods of time.
Warning!
G
Remove ashtray only with vehicle standing
still. Set the parking brake to secure vehicle
from movement. Move gear selector lever to
positionN. With gear selector lever in
positionN, turn off the engine.

158 Controls in detailUseful featuresElectrical outletElectrical outletOne outlet is located in the front passen-
ger footwell and another on the right-hand
side of the luggage compartment.
Flip up cover and insert electrical plug
(cigarette lighter type).
Telephone*
Radio transmitters, such as a portable tele-
phone or a citizens band unit, should only
be used inside the vehicle if they are con-
nected to an antenna that is installed on
the outside of the vehicle.
The external antenna must be approved by
Mercedes-Benz. Please contact an autho-
rized Mercedes-Benz Light Truck Center
for information on the installation of an ap-
proved external antenna. Refer to the radio
transmitter operation instructions regard-
ing use of an external antenna.
iThe outlets function even if the key is
not in the ignition.
The electrical outlet can be used to ac-
commodate electrical consumers (e.g.
air pump, auxiliary lamps) up to a max-
imum of 180 W.
If the engine is off, the battery may be-
come discharged if used for long peri-
ods of time.
Warning!
G
Never operate radio transmitters equipped
with a built-in or attached antenna (i.e. with-
out being connected to an external antenna)
from inside the vehicle while the engine is
running. Doing so could lead to a malfunc-
tion of the vehicle’s electronic system, pos-
sibly resulting in an accident and/or serious
personal injury.

161 Controls in detail
Useful features
Emergency calls
An emergency call is initiated automatical-
ly:

following an accident in which the
emergency tensioning detractors
(ETDs) or airbags deploy,


if the anti-theft alarm or the tow-away
alarm stays on for more than
20 seconds. See anti-theft alarm sys-
tem (
page 78) and tow-away alarm
(
page 79).
An emergency call can also be initiated
manually by opening the cover next to the
inside rear view mirror labeled SOS, then
briefly pressing the button located under
the cover. See below for instructions on
initiating an emergency call manually.
Warning!
G
The Tele Aid control unit is located under
the front passenger seat. If there is accumu-
lation of water or other liquid in this area,
the Tele Aid control unit could suffer an
electrical short circuit making the system in-
operative. In this case the indicator lamp in
the SOS button will not illuminate during or
will remain illuminated after the system
self-check. Have the system checked at the
nearest Mercedes-Benz Light Truck Center
as soon as possible.
If the indicator lamps in the SOS button, in
the Roadside Assistance button and/or in
the Information button do not come on dur-
ing the system self-check or if any of these
indicators remain illuminated constantly in
red and/or the message
TELE AID - VIS-
IT WORKSHOP
is displayed in the MCS dis-
play after the system self-check, a
malfunction in the system has been detect-
ed.
If a malfunction is indicated as outlined
above, the system may not operate as ex-
pected. Have the system checked at the
nearest Mercedes-Benz Light Truck Center
as soon as possible.

179 Operation
Driving instructions
Driving instructions
Drive sensibly – save fuel
Fuel consumption, to a great extent, de-
pends on driving habits and operating con-
ditions.
To save fuel you should:

Keep tires at the recommended infla-
tion pressures


Remove unnecessary loads


Allow engine to warm up under low
load use


Avoid frequent acceleration and decel-
eration


Have all maintenance work performed
at regular intervals by an authorized
Mercedes-Benz Light Truck Center
Fuel consumption is also increased by driv-
ing in cold weather, in stop-and-go traffic,
on short trips and in hilly country.
Drinking and driving
PedalsPower assistance
Warning!
G
Drinking and driving and/or taking drugs
and driving are a very dangerous combina-
tion. Even a small amount of alcohol or
drugs can affect your reflexes, perceptions
and judgement.
The possibility of a serious or even fatal ac-
cident is sharply increased when you drink
or take drugs and drive.
Don’t drink or take drugs and drive or allow
anyone to drive after drinking or taking
drugs.
Warning!
G
Keep driver’s foot area clear at all times. Ob-
jects stored in this area may impair pedal
movement.Warning!
G
When the engine is not running, there is no
power assistance for the steering system. In
this case, it is important to keep in mind that
a considerably higher degree of effort is nec-
essary to steer the vehicle.

180 OperationDriving instructionsBrakes
To help prevent brake disk corrosion after
driving on wet road surfaces (particularly
salted roads), it is advisable to brake the
vehicle with considerable force prior to
parking. The heat generated serves to dry
the brakes.
If your brake system is normally only sub-
jected to moderate loads, you should occa-
sionally test the effectiveness of the
brakes by applying above-normal braking
pressure at higher speeds. This will also
enhance the grip of the brake pads.If the parking brake is released and the
brake warning lamp in the instrument clus-
ter stays on and there is no audible warn-
ing (EBP), the brake fluid level in the
reservoir is too low.
Brake pad wear or a leak in the system may
be the reason for low brake fluid in the res-
ervoir.
Have the brake system inspected at an
authorized Mercedes-Benz Light Truck
Center immediately.
All checks and service work on the brake
system should be carried out by an autho-
rized Mercedes-Benz Light Truck Center.Warning!
G
After driving in heavy rain for some time
without applying the brakes or through wa-
ter deep enough to wet brake components,
the first braking action may be somewhat
reduced and increased pedal pressure may
be necessary to obtain expected braking ef-
fect. Maintain a safe distance from vehicles
in front.
Resting your foot on the brake pedal will
cause excessive and premature wear of the
brake pads.
It can also result in the brakes overheating,
thereby significantly reducing their effec-
tiveness. It may not be possible to stop the
vehicle in sufficient time to avoid an acci-
dent.
!Be very careful not to endanger other
road users when you apply the brakes.
Refer to the description of the Brake
Assist System (BAS) (
page 73).