2005 MERCEDES-BENZ C CLASS COUPE battery

170 Controls in detailGood visibility
Swing sun visors down when you expe-
rience glare.

To use mirror, lift up mirror cover2.
Rear window defroster
The rear window defroster uses a large
amount of power. To keep the battery
drain to a minimum, switch off the defrost-
er as soon as the rear window is clear.
The defroster is automatically deactivated
after approximately 6 to 17 minutes of
operation depending on the outside tem-
perature.
Activating
Press button F or 1 in the
climate control panel (
page 173) or
automatic climate.
The indicator lamp on the button
comes on. Deactivating

Press button
F or 1 in the
climate control panel (
page 173) or
automatic climate again.
The indicator lamp on the button goes
out.
iIf sunlight enters through a side
window, disengage sun visor from
mounting 1 and pivot to the side.
Warning!
G
Any accumulation of snow and ice should be
removed from the rear window before driv-
ing. Visibility could otherwise be impaired,
endangering you and others.

171
Controls in detail
Good visibility
!
If the rear window defroster switches
off too soon and the indicator lamp
starts flashing, this means that too
many electrical consumers are operat-
ing simultaneously and there is insuffi-
cient voltage in the battery. The system
responds automatically by deactivating
the rear window defroster.
As soon as the battery has sufficient
voltage, the rear window defroster
automatically turns itself back on.

193
Controls in detail
Automatic climate control*
Activating
Moist air can fog up the windows. You can
dehumidify the air with the air condi-
tioning.
Automatic climate control panel
design A
Press button
° (
page 183) again.
The indicator lamp on the button goes
out.
The cooling function is switched on.
Automatic climate control panel
design B

Press button 2 (
page 183) again.
The indicator lamp on the button
comes on.
The cooling function is switched on.
The air conditioning uses the refrigerant
R134a. This refrigerant is free of CFCs
which are harmful to the ozone layer. Residual heat and ventilation
(available on automatic climate control
panel design A only)
With the engine switched off, it is possible
to continue to heat or ventilate the interior
for up to 30 minutes. This feature makes
use of the residual heat produced by the
engine.
Activating
Switch off the ignition (
page 58).

Press button
° (
page 183).
The indicator lamp on the button
comes on. Deactivating

Press button
° (
page 183).
The indicator lamp on the button goes
out.
The residual heat is automatically turned
off:


when the ignition is switched on


after about 30 minutes


if the battery voltage drops
!If the air conditioning cannot be turned
on again, this indicates that the air
conditioning is losing refrigerant. The
compressor has turned itself off.
Have the air conditioning checked at
the nearest authorized Mercedes-Benz
Center.
iHow long the system will provide
heating depends on

the coolant temperature


the temperature set by the operator
The blower will run at speed setting 1
regardless of the air distribution
control setting.

240 Controls in detailPower windows
Aim transmitter eye at the driver’s door
handle.
Opening (Summer opening feature)

Press and hold button Πafter
unlocking the vehicle.
The windows and panorama roof with
power tilt/sliding panel* (
page 241)
begin to open after approximately
one second.

Release the Πbutton to stop
procedure. Closing (Convenience feature)

Press and hold button
‹ after lock-
ing the vehicle.
The windows and panorama roof with
power tilt/sliding panel* begin to close
after approximately one second.

Release the ‹button to stop
procedure.
Make sure all side windows and the pan-
orama roof with power tilt/sliding panel*
are properly closed before leaving the
vehicle.
Synchronizing power windows
The power window must be resynchro-
nized each time

after the battery has been disconnect-
ed.


if the power windows cannot be fully
opened (Express-open) or closed
(Express-close).

Switch on the ignition (
page 33).

Pull the power window switches until
the side windows are closed.
Hold the switches for approximately
one second.
The power windows are synchronized.


246 Controls in detailPanorama roof with power tilt/sliding panel*Synchronizing the panorama roof with
power tilt/sliding panel and the roller sunblinds
The tilt/sliding panel after must be
synchronized

after the battery has been
disconnected or discharged


after the tilt/sliding panel has been
closed manually


the tilt/sliding panel has been opened
with an abrupt movement


after a malfunction.

Switch on the ignition (
page 33).

Move and hold the roof panel switch in
direction of arrow3 (
page 242)
until the roller sunblind are fully closed.
Hold the roof panel switch for approxi-
mately one second.

Move and hold the roof panel switch in
direction of arrow 4 until the roller
sunblinds are fully opened.
Hold the roof panel switch for
approximately one second.

Move and hold the roof panel switch in
the direction of arrow 4 until the
tilt/sliding panel is approximately 4 in
(10 cm) opened.
Release the roof panel switch.

Move and hold the roof panel switch in
the direction of arrow 3 until the
tilt/sliding panel is fully closed.
Hold the roof panel switch for
approximately one second.

Check the Express-open feature of the
tilt/sliding panel (
page 244).
If the tilt/sliding panel opens com-
pletely, the tilt/sliding panel is
synchronized. Otherwise repeat the
above steps.

262 Controls in detailUseful featuresThe Tele Aid system
(Telematic 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
cellular 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 button æ and to lower,
press button ç. The volume can also
be adjusted using the volume knob on your
audio system or COMAND* head unit.

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 Tele
Aid acquaintance call, you will receive a
user ID and password. By visiting
www.mbusa.com and selecting “Tele Aid”
(USA only), you will have access to account
information, remote door unlock and
more.
System self-check
Initially, after switching on ignition, mal-
functions are detected and indicated (the
indicator lamps in the SOS button, the
Roadside Assistance button
• and the
Information button ¡ stay on longer
than ten seconds or do not come on). The
message
Tele Aid malfunction. Drive
to workshop
appears for approximately
ten 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
cover.!The Tele Aid system utilizes the cellular
network for communication and the
GPS (Global Positioning System) satel-
lites for vehicle location. If either of
these signals are unavailable, the
Tele Aid system may not function and if
this occurs, assistance must be sum-
moned by other means.

297
Operation
Engine compartment
The coolant expansion tank is located on
the passenger side of the engine compart-
ment.
1 Coolant expansion tank
2 Cap

Using a rag, turn the cap 2 slowly
approximately one half turn counter-
clockwise to release any excess
pressure.

Continue turning the cap counterclock-
wise and remove it.
The coolant level is correct if the level

for cold coolant: reaches the black
top part of the reservoir


for warm coolant: is approximately
0.6 in (1.5 cm) higher

Add coolant as required.

Replace and tighten cap.
Battery
Your vehicle’s battery is located in the en-
gine compartment on the right hand side.
The battery should always be sufficiently
charged in order to achieve its rated ser-
vice life. Refer to Maintenance Booklet for
battery maintenance intervals.
If you use your vehicle mostly for
short-distance trips, you will need to have
the battery charge checked more
frequently.
When replacing the battery, always use
batteries 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.

298 OperationEngine compartment
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 clean
water and seek medical help if
necessary.
E
Wear eye protection.
C
Keep children away.
F
Follow the instructions in this
Operator’s Manual.