2007 MERCEDES-BENZ CLK550 relay

139 Controls in detail
Control system
Control system
The control system is activated as soon as
the SmartKey in the starter switch is
turned to position1 or as soon as the
KEYLESS-GO* start/stop button is in
position1. The control system enables you
to

call up information about your vehicle

change vehicle settings
For example, you can use the control sys-
tem to find out when your vehicle is next
due for service, to set the language for
messages in the instrument cluster dis-
play, and much more.
The control system relays information to
the multifunction display.
Multifunction display
1Outside temperature
2Trip odometer
3Current shift program mode
4Main odometer
5Current gear selector lever posi-
tion/gear range
For more information on menus displayed
in the multifunction display, see “Menus”
(
page 142).
iThe displays for the audio systems (radio,
CD player etc.) will appear in English, regardless
of the language selected.
Warning!G
A driver’s attention to the road and traffic
conditions must always be his /her primary
focus when driving.
For your safety and the safety of others,
selecting features through the multifunction
steering wheel should only be done by the
driver when traffic and road conditions
permit it to be done safely.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is
covering a distance of 44 feet (approxi-
mately 14 m) every second.

246 Controls in detail
Audio system
Accepting an incoming call
If the telephone is active in the background
(reception symbol is visible in the display),
the audio source is muted when an incom-
ing call is received. A ringing tone can be
heard and the caller’s telephone number,
or the name under which the telephone
number has been saved in the telephone
book, appears in the display. If the caller’s
number is not relayed,
CALL will appear in
the display.
Press s button.
The call is accepted.
Muting a call
It is possible to mute a call; the caller is
then no longer able to hear you.

Mute on
PressMUT soft key.
MIC MUTE will appear in the display.

Mute off
PressMUT soft key again.Terminating a call
Press t button.
The current call is terminated and the
muted audio source becomes active
again.
Accepting a second incoming call
If you receive another call during an al-
ready active call, you can accept the sec-
ond call and switch between the two.

Accepting a second call
Place new call by entering tele-
phone number manually.
You are connected to the second
caller; the first caller is kept on hold.

Switching between calls
Press s button.
This switches between the calls.
The non-active call is kept on hold.

Terminating a call
Press t button.
The current call is terminated. The
connection to the caller previously
kept on hold is also interrupted;
however, reconnection is indicated
by an acoustic signal.
Placing a second call
If you wish to place another call during an
already active call, you can place the sec-
ond call and switch between the callers or
combine them into one call. Note that this
feature is dependent on availability from
your mobile phone service provider.

Placing a second call
Place a new call by entering tele-
phone number manually.
iYou will be notified of the second call acous-
tically, but you will not see this in the display.

393 Practical hints
What to do if …?
Display symbolDisplay messagePossible cause/consequencePossible solution
4Gas cap is openA loss of pressure has been detected in
the fuel system. The fuel cap may not be
closed properly or the fuel system may be
leaky.Check the fuel cap (page 312).
If it is not closed properly:
Close the fuel cap.
If it is closed properly:
Have the fuel system checked by an
authorized Mercedes-Benz Center.
± Certain electronic systems are unable to
relay information to the control system.
The following systems may have failed:

Coolant temperature display

Tachometer

Cruise control display
Have the electronic systems checked
by an authorized Mercedes-Benz Cen-
ter.