2004 MERCEDES-BENZ E320 heating

81 Safety and Security
Driving safety systems
The SBC brake servo assistance switches
off automatically

approximately two minutes after you
turned the SmartKey in the starter
switch to position0 or removed the
SmartKey


approximately two minutes after you
pressed the KEYLESS-GO* start/stop
button to turn off the engine or power
supply and opened the driver’s door
(with driver’s door open, the starter
switch is set to position 0, same as
SmartKey removed from starter
switch)


approximately 20 seconds after you
locked the vehicle from outside
Note on driving with the SBC


Following extended periods of only mi-
nor loads to your brake system, you
should occasionally apply the brakes
when traveling at high speeds. This im-
proves the grip of the brake pads.


After driving on wet or snow-covered
roads, you should apply your brakes
firmly before parking your vehicle. This
produces heat which serves to dry the
brake disks and help prevent corro-
sion.


On long and steep grades, shift to a
lower gear (gear range1, 2, or 3) to
prevent the brakes from overheating
and to reduce brake wear.


After hard braking, it is advisable to
drive on for some time so that the air
stream will cool down the brakes fast-
er.


Only Mercedes-Benz approved compo-
nents (e.g. brake pads) should be in-
stalled on your vehicle. Brake pads not
approved by Mercedes-Benz may im-
pair the safety of your vehicle.
Warning!
G
Have brake pad replacement and other work
on the SBC brake system carried out by
qualified technicians only. Contact your
Mercedes-Benz Center for further informa-
tion. The SBC brake system must be deacti-
vated prior to working on the system. High
pressure is intermittently built up in the sys-
tem as part of its automatic self-test. In ad-
dition, the system is automatically activated
when the vehicle is unlocked by SmartKey,
when the driver or passenger door is
opened, when the starter switch is turned to
position
1, when the brake pedal is de-
pressed or when the parking brake is re-
leased. Failure to deactivate the system
prior to maintenance will cause brake pis-
tons to extend and brake fluid to leak, which
may result in injuries (contusions and acid
burns). Extended brake pistons may also
cause injury.
Warning!
G
Be very careful not to endanger other road
users when you apply the brakes.

113 Controls in detailSeats
Massage function (PULSE)
The massage function can help prevent
muscle tension during long drives.
Press button6.
The indicator lamp in button2 comes
on. The air cushions in the lumbar area
pulsate.
Heated seats*
Both switches for the front seats are locat-
ed in the center console. The red indicator
lamps in the switch come on to show
which heating level you have selected.
1Seat heating switch

Make sure the ignition is switched on.
All lights in the instrument cluster
come on.
Switching seat heating on

Press button1 repeatedly until the
desired heating level is set.
One or more red indicator lamps on the
switch show the selected heater level
iThe massage function turns off auto-
matically after approximately five min-
utes.
Leveloff
No indicator lamps on
1
One indicator lamp on
2
Two indicator lamps onThe seat heater automatically
switches to level 1 after approxi-
mately ten minutes.
3
Three indicator lamps onThe seat heater automatically
switches to level 2 after approxi-
mately five minutes.

114 Controls in detailSeatsSwitching seat heating off
Press button1 repeatedly until all in-
dicator lamps go out.
Seat ventilation*
The switch is located on the center con-
sole. Seat ventilation can be activated
manually with the ignition on, or by the
summer opening feature (
page 199).
The blue indicator lamps on the switch
show the ventilation level selected:
1Seat ventilation switch

Make sure the ignition has been
switched on.
All lights in the instrument cluster
come on.
iThe seat heating will be automatically
switched off after approximately
20 minutes.!If one or more of the lamps on the seat
heater switch are flashing, there is in-
sufficient voltage available since too
many electrical consumers are turned
on. The seat heater switches off auto-
matically.
The seat heater will switch back on
again automatically as soon as suffi-
cient voltage is available.
Level3
Three indicator lamps lit
2
Two indicator lamps lit
1
One indicator lamp lit
off
No indicator lamp lit

179 Controls in detail
Climate control
Adjusting center air vents:
The thumbwheels for left2 and right6
center air vents are automatically posi-
tioned for optimum interior airflow. In this
position, center air vent4 and adjustable
left and right center vents3 and5 are
fully opened.
Heating:
Only in manual mode is it possible to lower
the temperature in the headroom by regu-
lating the cold-airflow using
thumbwheel7 (
page 174).Windshield fogged on the outside

Switch the windshield wipers on
(page 48).

Press the Ubutton.
The indicator lamp on the button
comes on.
Adjusting air volume
Adjusting manually
Five blower speeds are available.
Press
to decrease orQ to in-
crease air volume to the desired level.
The
Auto
display disappears and the
automatic mode is switched off. The
selected blower speed is shown in the
display.Adjusting automatically

Press the U button.
The air volume is adjusted automatical-
ly.
Defrosting
Activating
Press buttonP.
The indicator lamp on the button
comes on.
or

Switch off air recirculation, if selected.
Press buttonO.
The indicator lamp on the button goes
out.iThese settings should only be selected
for a short time.


189 Controls in detail
Automatic climate control*
Increasing
Push top of temperature control rocker
switch3 and / or5.
The automatic climate control system
will correspondingly adjust the interior
air temperature.
Decreasing

Push bottom of temperature control
rocker switch3 and / or5.
The automatic climate control system
will correspondingly adjust the interior
air temperature.
Heating:
Only in manual air distribution mode is it
possible to lower the temperature in the
headroom by adding outside air using
thumbwheel7 (
page 184) in the dash-
board.
Adjusting air distribution
Use the air distribution controls1 and7
(page 176) to separately adjust the air
distribution on each side of the passenger
compartment. The following symbols are
found on the controls:Adjusting manually

Press left or rightU.
The indicator lamp in theU button
goes out.

Turn air distribution controls on each
side of the passenger compartment to
the desired symbol.
Adjusting automatically

Press left or rightU button again.
The indicator lamp in theU button
illuminates. The air distribution is ad-
justed automatically.
Windshield fogged on the outside

Switch the windshield wipers on.

Press the left or rightU button.
Symbol
Function
a
Directs air through the center,
side and rear passenger com-
partment air vents
Z
Directs air to the windows
X
Directs air into the entire vehi-
cle interior
Y
Directs air to the footwells

245 Controls in detail
Useful features

To open air vent slide the lever up.

To close air vent slide the lever down.Storage compartment in the rear cen-
ter console

Briefly press the top of the compart-
ment.
It extends automatically.Ruffled storage bags
Ruffled storage bags are located on the
back of the front seats.
iThe compartment can get very warm
due to its confined space. When storing
heat sensitive objects (e.g. groceries)
in the compartment, close the air vent
while heating the passenger compart-
ment
Warning!
G
The ruffled storage bag is intended for stor-
ing light-weight items only.
Heavy objects, objects with sharp edges or
fragile objects may not be transported in the
ruffled storage bag.
The ruffled storage bag cannot protect
transported goods in the event of an acci-
dent.

248 Controls in detailUseful features
12-V socket*
The socket is located in the rear of the cen-
ter console storage compartment.
The socket can be used for accessories up
to a maximum of 180 W.
Heated steering wheel*
The steering wheel heating warms up the
leather area of the steering wheel.
The stalk with the heated steering wheel
switch is on the lower left-hand side of the
steering wheel.
1Indicator lamp
2Switching off
3Switching on
Warning!
G
Never touch the heating element or sides of
the lighter; they are extremely hot. Hold the
knob only.
When leaving the vehicle, always remove the
SmartKey from the starter switch, take the
SmartKey with KEYLESS-GO* with you, and
lock your vehicle. Do not leave children un-
attended in the vehicle, or with access to an
unlocked vehicle. Unsupervised use of vehi-
cle equipment may cause an accident
and / or serious personal injury.iThe lighter socket can be used to ac-
commodate electrical accessories up
to a maximum 85 W.

249 Controls in detail
Useful features
Switching on
Switch on ignition.
All lamps in the instrument cluster
come on.

Turn switch at the tip of stalk in the di-
rection of arrow3.
The steering wheel is heated. Indicator
lamp1 comes on.
Switching off

Turn switch at the tip of stalk in direc-
tion of arrow2.
The heated steering wheel is turned off.
Indicator lamp1 goes out.
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 Center for informa-
tion on the installation of an approved
external antenna. Refer to the radio trans-
mitter operation instructions regarding use
of an external antenna.
iThe steering wheel heating does not
turn off automatically.
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.
Warning!
G
Please do not forget that your primary re-
sponsibility is to drive the vehicle. A driver’s
attention to the road must always be
his / her primary focus when driving. For
your safety and the safety of others, we rec-
ommend that you pull over to a safe location
and stop before placing or taking a tele-
phone call.
If you choose to use the telephone
1 while
driving, please use the hands-free device
and only use the telephone when road,
weather and traffic conditions permit. Some
jurisdictions prohibit the driver from using a
cellular telephone while driving a vehicle.
Only operate the COMAND (Cockpit Man-
agement and Data System)
if road, weather and traffic conditions per-
mit.
1Observe all legal requirements.