2003 MERCEDES-BENZ E320 Charge battery

31 Getting started
Unlocking
Starter switch positionsStarter switch0For removing key
1Power supply to some electrical con-
sumers, such as seat adjustment
2Ignition (power supply for all electrical
consumers) and driving position
3Starting position
Warning!
G
When leaving the vehicle always remove the
key from the starter switch, take the Smart-
Key with KEYLESS-GO* (if so equipped) with
you and lock the vehicle. Do not leave chil-
dren unattended in the vehicle, or with ac-
cess to an unlocked vehicle. Unsupervised
use of vehicle equipment may cause serious
personal injury.iThe SmartKey can only be removed
from the starter switch with the gear
selector lever in position P.
!If the key is left in starter switch
position0 for an extended period of
time, it can no longer be turned in the
starter switch.

Remove the key from the starter
switch and reinsert.
If the key can still not be turned, the
battery may not be sufficiently
charged.

Check the battery and charge it
if necessary (
page 266).

Get a jump start (
page 346).
To prevent accelerated battery dis-
charge or a completely discharged bat-
tery, always remove the key from the
starter switch.

81 Safety and Security
Anti-theft systems
Anti-theft systems
Immobilizer
The immobilizer prevents unauthorized
persons from starting your vehicle.
Activating

With the key: Removing the key from
the starter switch activates the immo-
bilizer.


With KEYLESS-GO*: Turning off the en-
gine by means of the KEYLESS-GO
start/stop button on the gear selector
lever activates the immobilizer.Deactivating


With the key: Inserting the key in the
starter switch deactivates the immobi-
lizer.


With KEYLESS-GO*: Starting the en-
gine by means of the KEYLESS-GO
start/stop button on the gear selector
lever deactivates the immobilizer.
iIn case the engine cannot be started
(yet the vehicle’s battery is charged),
the system is not operational. Contact
an authorized Mercedes-Benz Center
or call 1-800-FOR-MERCedes (in the
USA), or 1-800-387-0100 (in Canada).

88 Controls in detailLocking and unlocking
Checking the batteries
Press button‹ orŒ.
Battery check lamp5 lights up briefly
to indicate that the key batteries are in
order.Unlocking the trunk lid
You can unlock the trunk separately.
A minimum height clearance of 5.75 ft.
(1.75 m) is required to open the trunk lid.

Press and hold button Š until trunk
opens.
The trunk can also be opened from its in-
side in an emergency, see "Trunk lid emer-
gency release" (
page 97).
!If you can no longer lock or unlock the
vehicle with the key, then either the
batteries in the SmartKey are dis-
charged or the key is malfunctioning.

Check the batteries in the key
(page 88) and replace them if
necessary (
page 328).
or


Use the mechanical key to lock and
unlock the doors (
page 327) and
the trunk lid (
page 98) as re-
quired.
If the key is malfunctioning, contact an
authorized Mercedes-Benz Center.
!If battery check lamp5 does not light
up briefly during check, then the key
batteries are discharged.
Replace the batteries (
page 329).
You can obtain the required batteries
at any authorized Mercedes-Benz Cen-
ter.
!The trunk lid swings upwards automat-
ically. Always make sure that there is
sufficient overhead clearance.

193 Controls in detail
Panorama sliding/pop-up roof*
Closing (Convenience feature)
Press and hold button‹ after lock-
ing the vehicle.
The windows and panorama slid-
ing/pop-up roof begin to close after
approximately one second.

Press and hold buttonΠagain.
The roller blinds close.

Release transmit button to interrupt
procedure.
Ensure that all side windows and the pan-
orama sliding/pop-up roof are properly
closed before leaving the vehicle.Synchronizing the panorama slid-
ing/pop-up roof
It is necessary to resynchronize the pan-
orama sliding/pop-up roof after:


voltage supply interruption due to a
disconnected or discharged battery


the roof has been closed manually


the roof has been opened with an
abrupt movement


a malfunction

Remove the fuse from the main fuse
box.

Replace the fuse in the main fuse box.

Turn the ignition on.

Press the switch in direction 3.

Wait until the panorama sliding/pop-up
roof is raised and then keep the switch
pressed for approximately 1 second.
Solar panel*
Combined with the panorama slid-
ing/pop-up roof a solar panel is available.
The solar cells convert natural light into
electrical energy. When the engine is
switched off, the energy generated auto-
matically switches on the ventilation fan.
The constant air flow creates a cooler tem-
perature for cars parked in the sunlight.
The air flow depends on the intensity of the
solar radiation. The ventilation starts 2
minutes after switching off the engine.

235 Controls in detail
Useful features
The Tele Aid system
(Tele
matic A
larm I
dentification on D
e-
mand)
The Tele Aid system consists of three
types of response:


Automatic and manual emergency


Roadside Assistance and


Information
The Tele Aid system is operational provid-
ing that the vehicle’s battery is charged,
properly connected, not damaged and cel-
lular and GPS coverage is available.
The speaker volume of a Tele Aid call can
be adjusted when using the volume control
on the multifunction steering wheel. To
raise, press buttonæ and to lower,
press buttonç.

To activate, press the SOS button, the
Roadside Assistance button• or
the Information button¡, depend-
ing on the type of response required.Shortly after the completion of your ac-
quaintance call, you will receive a user ID
and password via first call mail. By visiting
www.mbusa.com and selecting "Tele Aid"
(USA only), you will have access to account
information, remote door unlock, Info Ser-
vices
1 profile and more.System self-check
Initially, after turning the key in starter
switch to position2, malfunctions are de-
tected and indicated (the indicator lamps
in the SOS button, the Roadside Assis-
tance button• and the Information
button¡ stay on longer than
10 seconds or do not come on). The mes-
sage
TELE AID – VISIT WORKSHOP!
ap-
pears for approx. 10 seconds in the
multifunction display.
iThe SOS button is located above the in-
side rear view mirror.
The Roadside Assistance button•
and the Information button¡ are
located below the center armrest cov-
er.
1Available only with COMAND*

266 OperationEngine compartmentBattery
Your vehicle is equipped with two batter-
ies:

Auxiliary battery (located in the engine
compartment).


Main battery (starter and electrical
consumers; located in the trunk).
These batteries should always be suffi-
ciently charged in order to achieve their
rated service life.
If you use your vehicle mostly for short dis-
tance trips, you will need to have the bat-
tery charge checked more frequently.
When replacing batteries, always use bat-
teries approved by Mercedes-Benz.
If you do not intend to operate your vehicle
for an extended period of time, consult an
authorized Mercedes-Benz Center about
steps you need to observe.Batteries contain materials that can harm
the environment if disposed of improperly.
Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.
G
Observe all safety instructions
and precautions when handling
automotive batteries.
A
Risk of explosion
D
Keep flames or sparks away
from battery. Do not smoke.
B
Battery acid is caustic. Do not
allow it to come into contact
with skin, eyes or clothing.
In case it does, immediately
flush affected area with clear
water and seek medical help if
necessary.
E
Wear eye protection.
C
Keep children away.
F
Follow the instructions in this
Operator's Manual.

273 Operation
Winter driving
Winter driving
Before the onset of winter, have your vehi-
cle winterized at an authorized
Mercedes-Benz Center. This service in-
cludes:

Check of anticorrosion and antifreeze
concentration.


Addition of cleaning concentrate to the
water of the windshield and headlamp
cleaning system. Add MB Concentrate
"S" to a premixed windshield washer
solvent / antifreeze which is formulated
for below freezing temperatures
(page 371).


Battery test. Battery capacity drops
with decreasing ambient temperature.
A well charged battery helps to ensure
that the engine can be started, even at
low ambient temperatures.


Tire change. We recommend M+S rat-
ed radial-ply tires on all four wheels for
the winter season.
Winter tires
Always use winter tires at temperatures
below 39°F (4°C) and whenever wintry
road conditions prevail. Use of winter tires
is the only way to achieve the maximum ef-
fectiveness of the ABS and the ESP in win-
ter operation.
For safe handling, ensure that all mounted
winter tires are of the same make and have
the same tread design.Always observe the speed rating of the
winter tires installed on your vehicle. If the
maximum speed for which your tires are
rated is below the speed rating of your ve-
hicle, you must place a notice to this effect
where it will be seen by the driver. Such no-
tices are available from your tire dealer or
from any authorized Mercedes-Benz Cen-
ter.Warning!
G
Winter tires having a tread depth under
0.16 in (4 mm) must be replaced. They are
no longer suitable for winter operation.
Warning!
G
If you use your spare tire when winter tires
are fitted on the other wheels, be aware that
the difference in tire characteristics may
very well impair turning stability and that
overall driving stability may be reduced.
Adapt your driving style to this.
Have the spare tire replaced with a winter
tire at the nearest authorized
Mercedes-Benz Center.

303 Practical hints
What to do if …
G
Display defective
The instrument cluster display is malfunc-
tioning.

Continue driving with added caution.

Visit an authorized Mercedes-Benz
Center as soon as possible.
G

Display defective
Visit workshop!
The displays for several systems have mal-
functioned. Some systems themselves may
also have malfunctioned.

Have the electronic systems
checked by an authorized
Mercedes-Benz Center.
L
Visit workshop!
One or more main functions of the Tele Aid
system are malfunctioning.

Have the Tele Aid system checked by
an authorized Mercedes-Benz Cen-
ter.
#
Malfunction
Electrical consumers
switched off
The consumer battery has insufficient volt-
age and can no longer supply the conve-
nience functions such as seat ventilation*.
The electrical consumers will come back
online as soon as on-board voltage is
sufficient.
#
Battery/Alternator
Stop vehicle!
The battery is malfunctioning.
The SBC brake system requires electrical
energy and therefore has only limited oper-
ation. Considerably greater brake pedal
force is required and the stopping distance
is increased.

Stop the vehicle as soon as it is safe
to do so. Adjust driving to be consis-
tent with reduced braking respon-
siveness.

Notify an authorized Mercedes-Benz
Center.
#
Undervoltage
Charge battery
The battery has insufficient voltage.

Start the engine (
page 43).
Display
Possible cause
Suggested solution