2008 MERCEDES-BENZ C300 ESP

229 Controls in detail
Audio system
Displaying details on a telephone
h
Tel
Phone List.
Select the telephone from the list.
Select Options
Details.
The details screen for the device is
shown in the audio display.
To close details screen:
Slideompthe audio controller or
press buttoní in the center
console.
De-authorizing a Bluetooth
® device
h
Tel
Phone List.
Select authorized device.
Select Options
De-Authorize.
A prompt appears asking whether you
really want to de-authorize this device.
Select Yes or No.
If you select
Yes, the device will be
de-authorized.Activating another telephone
If you have several authorized telephones,
you can switch between the individual tele-
phones.
When you authorize a new telephone, it is
automatically activated. Only one tele-
phone can be active at a time.
h
Tel
Phone List.
Select an authorized telephone from
the list.
Press n to confirm.
The selected phone will be searched
for and connected if it is located in the
Bluetooth
® range and Bluetooth® is ac-
tivated on the corresponding device.
The selected telephone is activated.
A dotR in front of the entry, indicates
the current active telephone in the
phone list.
Receiving business cards
You can import business cards (vCards)
into the address book from external Blue-
tooth
® devices (page 233).
iIf you de-authorize a device which has been
authorized in the past and which is not detected
in the search, this device will no longer be dis-
played in the device list.
Devices which have been authorized in the past
but which are not detected in the search are ei-
ther not switched on or not in the vehicle.
iYou cannot switch to another authorized
phone during a call.

231 Controls in detail
Audio system
“911” emergency call
The following describes how to dial a “911”
emergency call using the audio system
head unit when a Mercedes-Benz specified
mobile phone* is connected via the Blue-
tooth
® interface to the audio system. Un-
less otherwise specified, the descriptions
refer to the audio system head unit. Consult the separate telephone operating
instructions that came with your mobile
phone* for information on how to place a
“911” emergency call on the mobile
phone*.
The following conditions must be met for a
“911” emergency call via the audio
system:

Telephone must be switched on.

The corresponding mobile communica-
tions network must be available.
If you cannot make an emergency call, you
will have to initiate rescue measures your-
self. GSM network phones
Placing a “911” emergency call using
audio control unit with the phone un-
locked
Press hbutton to switch to tele-
phone mode.
Enter 911 using the number keypad on
the audio control unit.
Press sbutton.
or
Press n for dialing to begin.
DIALING appears in the audio display
while the telephone establishes the
connection.
Wait until the emergency call center
answers, then describe the emergency.
iThe “911” emergency call system is a public
service. Using it without due cause is a criminal
offense.
iThis function places a call to the local 911
provider. It does not initiate a Tele Aid call.
iEmergency calls may not be possible with all
telephone networks or if certain network serv-
ices and/or telephone functions are active.
Check with your local service providers.

240 Controls in detail
Audio system
Functions during a single call
Switching hands-free microphone on or
off
The menu bar changes when you make or
receive a call. Instead of the
Call Lists
menu item,
Mic Off or Mic On will appear.
To switch off: Select Mic Off.
The following message will flash up on
the display:
The microphone is off.
When the microphone is switched off
the symbol > appears in the main
area.
To switch on: Select Mic On.
The following message will flash up on
the display:
The microphone is on.
The microphone is switched on and the
symbol > disappears in the main area. Sending DTMF tones
Answering machines or other devices can
be controlled via DTMF tones, e.g. for re-
mote query functions.
To transmit individual characters:
During a call select the required char-
acters.
or
Press the corresponding button on the
audio control unit.
Every selected character is transmitted
immediately.
Transmitting a phone number of a
phone book entry as a sequence of
characters: Select
Name.
Select the desired phone book entry.
The entry is transmitted immediately as
a sequence of characters.
To switch back to call display: Select
Back.
iThis function is not possible with all mobile
phones.

241 Controls in detail
Driving systems
Driving systems
The driving systems of your vehicle are de-
scribed on the following pages:

Cruise control, with which the vehicle
can maintain a preset speed.

Hill start assist system which helps you
to start off smoothly on a hill.
For information on the ABS, Adaptive
Brake, BAS, EBP, ESP
®, and 4MATIC, see
“Driving safety systems” (
page 59).
Cruise control
The cruise control automatically maintains
the speed you set for your vehicle.
The use of the cruise control is recom-
mended for driving at a constant speed for
extended periods of time.
You can set or resume the cruise control at
any speed over 20 mph (30 km/h).
The cruise control function is operated by
means of the cruise control lever.
Warning!G
The cruise control is a convenience system
designed to assist the driver during vehicle
operation. The driver is and must always
remain responsible for the vehicle’s speed
and for safe brake operation.
Only use the cruise control if the road,
traffic, and weather conditions make it
advisable to travel at a steady speed.

The use of the cruise control can be
dangerous on winding roads or in heavy
traffic because conditions do not allow
safe driving at a steady speed.

The use of the cruise control can be
dangerous on slippery roads. Rapid
changes in tire traction can result in
wheel spin and loss of control.

Deactivate the cruise control when
driving in fog.
The “Resume” function should only be
operated if the driver is fully aware of the
previously set speed and wishes to resume
this particular preset speed.
Warning!G
The cruise control brakes automatically so
that the set speed is not exceeded. The
brake pedal depresses when the cruise con-
trol engages the brakes.
Keep driver’s foot area clear at all times, in-
cluding the area under the brake pedal. Ob-
jects stored in this area may impair pedal
movement which could interfere with the
braking ability of the cruise control system.
Do not place your foot under the brake pedal
– your foot could become caught.
Keep in mind that the cruise control is a con-
venience system designed to assist the driv-
er during vehicle operation. The driver is and
must always remain responsible for the ve-
hicle’s speed and for safe brake operation.

242 Controls in detail
Driving systems
1Setting current or higher speed
Adjustment in 1 mph increments (to re-
sistance point) or 5 mph increments
(past resistance point)
(Canada: 1 km/h or 10 km/h)
2Setting current or lower speed
Adjustment in 1 mph increments (to re-
sistance point) or 5 mph increments
(past resistance point)
(Canada: 1 km/h or 10 km/h)
3Cancel cruise control
4Resume to last set speedActivating cruise control
You can activate the cruise control if the
vehicle speed is above 20 mph (30 km/h).
In the following cases you cannot activate
the cruise control:

when you brake

the vehicle is secured with the parking
brake

Vehicles with automatic transmission*:
when the gear selector lever is set to
positionP, R, or N

when ESP® is switched offSetting current speed
Accelerate or decelerate to the desired
speed.
Briefly lift the cruise control lever in
direction of arrow1 or depress in
direction of arrow2.
The current speed is set.
Remove your foot from the accelerator
pedal.
The cruise control is activated.

The last set speed appears in the
multifunction display for approxi-
mately 5 seconds.

The corresponding speedometer
segments from the selected speed
to the vehicle maximum speed in
the multifunction display are illumi-
nated.iThe vehicle speed displayed in the speedom-
eter can briefly vary from the speed setting for
the cruise control system.

243 Controls in detail
Driving systems
1SegmentsCanceling cruise control
There are several ways to cancel the cruise
control:
Step on the brake pedal.
The cruise control is canceled. The last
speed set is stored for later use.
or
Briefly push the cruise control lever in
direction of arrow3 (
page 242).
The cruise control is canceled. The last
speed set is stored for later use.
iOn uphill grades, the cruise control may not
be able to maintain the set speed. Once the
grade eases, the set speed will be resumed.
On downhill grades, the cruise control maintains
the set speed by braking with the vehicle’s
braking system. In addition, on longer downhill
grades the automatic transmission* will down-
shift automatically.
iVehicles with manual transmission:
If you depress the clutch pedal when shifting into
another gear, the engine speed may increase.

Always drive at sufficient, but not excessive,
engine speed.

Shift gear in a timely manner.

Avoid shifting down more than one gear if at
all possible.
iThe last stored set speed is canceled when
the engine is turned off.
iThe cruise control switches off
automatically and the segments in the multifunc-
tion display go out when

you step on the brake pedal.

you press the parking brake pedal.
The cruise control switches off automatically,
the segments in the multifunction display go out
and an acoustic warning sounds when

the vehicle speed is below 20 mph
(30 km/h).

the ESP® is in operation or switched off with
the ESP® switch (page 63).

Vehicles with manual transmission:
you engage neutral or depress the clutch
pedal for more than 6 seconds during shift-
ing into another gear.

Vehicles with automatic transmission*:
you move the gear selector lever to
positionN while driving.
Observe additional messages in the
multifunction display that may appear.

246 Controls in detail
Driving systems
Briefly pull the cruise control lever in
the direction of arrow4 (
page 242).
The cruise control resumes to the last
set speed or if no speed is stored, it will
set and store the current speed.
Remove your foot from the accelerator
pedal.
The last set speed appears in the multi-
function display for approximately
5 seconds, and the corresponding
speedometer segments from the se-
lected speed to the vehicle maximum
speed are illuminated.
Hill start assist system
On uphill grades with a gradient angle of
more than 5°, the hill start assist system
maintains the pressure in the brake sys-
tem for approximately 1 second after you
have released the brake pedal. Therefore,
you can start off smoothly without the
vehicle moving immediately after releasing
the brake pedal.
Depress the brake pedal
Manual transmission: Engage for-
ward or reverse gear.
Slowly release the clutch pedal, remov-
ing your foot from the brake pedal at
the same time, and carefully depress
the accelerator pedal.
Automatic transmission*: Move the
gear selector lever to position Dor R.
Remove your foot from the brake pedal
and carefully depress the accelerator
pedal.
The hill start assist system is inactive

when starting off on a level road or
downhill grades

vehicles with automatic transmission*
with the gear selector lever in
positionN

with the parking brake depressed

if the ESP® has switched off due to a
malfunction
iThe last stored set speed is deleted when
the engine is turned off.
Warning!G
The hill start assist system is not designed
to function as an parking brake and does not
prevent the vehicle from moving when
parked on an incline.
Always depress the parking brake in
addition to shifting to park positionP.
iWhen you remove your foot from the accel-
erator, the vehicle will remain stationary for ap-
prox. 1 second.

254 Controls in detail
Dual-zone automatic climate control
Adjusting air distribution
Use buttonZ (
page 250) to adjust
the air distribution manually. The following
symbols are shown in displayb:
Press buttonZ (page 250) re-
peatedly until you have select the de-
sired setting and the corresponding
symbol is shown in displayb.
The indicator lamp in buttonU goes
out. The automatic air distribution is
switched off. The air distribution is
controlled according to the selected
control setting.
Adjusting air volume
Seven blower speeds are available.
Press button· to decrease
orQ (
page 250) to increase air
volume to the desired level.
The indicator lamp in buttonU
(
page 250) goes out.
The air volume is adjusted correspond-
ing to the set blower speed. The auto-
matic air distribution remains switched
on.Using driver-side settings for all tem-
perature zones (Canada only)
You can use the settings of the driver’s
side, such as temperature, air volume and
air distribution, for all temperature zones.
Activating: Press buttonz
(
page 250).
The indicator lamp in the button comes
on.
The driver-side settings are used for all
temperature zones.
Deactivating: Press buttonz
(
page 250) again.
The indicator lamp in the button goes
out.
SymbolFunction
{Directs air to the windshield
and the side defroster vents
aDirects air through the center,
side and rear passenger
compartment air vents
YDirects air to the footwells
iYou can also select a position between two
symbols with buttonZ.