2008 MERCEDES-BENZ SLK280 telephone cradle

220 Controls in detail
Audio system
Further operating instructions not covered
here can be found in the operating instruc-
tions for the multifunction steering wheel
and the mobile telephone*.
If your audio system is set up for telephone
operation, the tsymbol will appear in
the display.
When you insert your Mercedes-Benz
specified mobile telephone* into the
telephone cradle, you will be prompted to
enter your PIN for 30 seconds
(
page 220). This display disappears
when you press any button.
When your mobile telephone* is inserted
into the telephone cradle, you will see the
reception strength in the upper right-hand
corner of the display.Switching on the telephone
Switching on the telephone
Pressh button.
If the telephone was previously
switched off,
PROCESSING appears in
the display and you will then be
prompted to enter your PIN.
Switching off the telephone
Pressh button for approximately
3 seconds.
PROCESSING appears in the display until
the telephone is off. Afterward,
PHONE OFF appears in the display.PIN entry
Enter PIN number using buttons 1
to R.
If necessary, correct number entered
with the
CLR soft key. Press soft key
briefly to delete the last digit entered;
press soft key and hold to delete the
complete number.
Press OK soft key after entering correct
PIN.
READY or ROAMING will appear in the
display.
iIf the PIN is entered incorrectly three times,
NEED PUK will appear in the display. Enter PUK
via your telephone. Please refer to the separate
telephone operating instructions for more
information.

226 Controls in detail
Audio system

Combining two calls
Press 3 and s buttons.
The calls are combined into one
call.

Terminating a combined call
Press t button.
The connection to both callers is
terminated.
TDMA or CDMA network phonesUsing your Mercedes-Benz specified
mobile telephone*, a number of functions
and operating steps can be performed and
displayed in the audio system display.
Further operating instructions not covered
here can be found in the operating instruc-
tions for the multifunction steering wheel
and the mobile telephone*.
If your audio system is set up for telephone
operation, the t symbol will appear in
the display.
When you insert your Mercedes-Benz
specified mobile telephone* into the
telephone cradle, you will be prompted to
enter your PIN for 30 seconds
(
page 227). This display disappears
when you press any button.
When your mobile telephone* is inserted
into the telephone cradle, you will see the
reception strength in the upper right-hand
corner of the display.
Warning!G
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 tele-
phone
1 while driving, please use the
hands-free device and only use the tele-
phone when weather, road, and traffic con-
ditions permit.
Some jurisdictions prohibit the driver from
using a cellular telephone while driving a ve-
hicle.
Bear in mind that at a speed of just
30 mph (approximately 50 km/h), your
vehicle is covering a distance of
44 feet (approximately 14 m) every second.
1Observe all legal requirements.

233 Controls in detail
Audio system
Emergency calls “911”
The following describes how to dial a “911”
emergency call using the audio system
head unit when a Mercedes-Benz specified
mobile phone* is inserted in the phone
cradle. Unless 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:

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
yourself. GSM network phones
Placing a “911” emergency call using
audio head unit with the phone lockedPress hbutton to switch to
telephone operation.
PIN? appears in the audio display.
Enter 911 using the number keypad on
the audio head unit.
Press OK soft key or sbutton 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. Warning!G
The “911” emergency call system is a public
service. Using it without due cause is a
criminal offense.
iEmergency calls may not be possible with
all telephone networks or if certain network
services and/or telephone functions are active.
Check with your local service providers.

253 Controls in detail
Useful features
Useful features
Storage compartments Glove box
1Glove box lid release
2Glove box lid
Pull glove box lid release1 to open
the glove box.
The glove box lid opens downward.
Push glove box lid2 up until it
engages to close the glove box.Storage/telephone* compartment
1Armrest
2Recess for opening storage/tele-
phone* compartment
Reach into recess2 on the left or
right side and lift armrest1 in
direction of arrow to open the
storage/telephone* compartment.
Lower armrest1 until it engages to
close storage compartment.
Warning!G
To help avoid personal injury during a colli-
sion or sudden maneuver, exercise care
when storing objects in the vehicle. Put lug-
gage or cargo in the trunk if possible. Do not
place anything on shelf behind the roll bars.
Parcel nets cannot secure hard or heavy ob-
jects.
Keep compartment lids closed. This will help
to prevent stored objects from being thrown
around and injuring vehicle occupants dur-
ing an accident.
iThe glove box and the storage/telephone*
compartment under the armrest are centrally
locked and unlocked.
iThe CD changer* is located in the glove box.
iThe mobile phone cradle* (page 260),
Roadside Assistance button• (
page 266)
and the Information button¡ (
page 267)
are located in the storage/telephone* compart-
ment.

259 Controls in detail
Useful features
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.When the mobile phone is inserted in the
cradle, you can operate the telephone
using the following devices:

mobile phone keypad

COMAND* (see separate operating in-
structions)

buttonss andt on the multi-
function steering wheel (
page 149)

audio system (page 219)
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
mobile telephone while driving a vehicle.
Only operate the audio system or
COMAND*
1 if road, weather and traffic con-
ditions permit.
Bear in mind that at a speed of just
30 mph (approximately 50 km/h), your
vehicle is covering a distance of
44 feet (approximately 14 m) every second.
1Observe all legal requirements.
iVarious mobile phone cradles can be in-
stalled in the center armrest, see separate in-
stallation instructions for the mobile phone
cradle. These mobile phone cradles can be
obtained from an authorized Mercedes-Benz
Center.
The functions and services available to you while
using the mobile phone depend on your service
provider and the type of mobile phone you are
using. See also separate operating manual for
instructions on how to use your mobile phone.

260 Controls in detail
Useful features
Please note that these functions are only
available with Mercedes-Benz approved
mobile phones. Please contact an autho-
rized Mercedes-Benz Center for informa-
tion on features available for your mobile
phone of choice.
The cradle is located in the front center
armrest storage/telephone*
compartment (
page 253).
Open the storage/telephone* com-
partment (
page 253).Inserting mobile phone in mobile phone
cradle
Once the mobile phone has been inserted
in the mobile phone cradle, you have to
use the hands-free device to respond
during phone calls.If applicable, remove the cover for the
external antenna connection from the
back of the mobile phone and store it in
a s a f e p l a c e . B e s u r e t o c o m p l y w i t h t h e
mobile phone’s operating instructions
as well.Example illustration
1Insert the mobile phone
2Connector contact
3Mobile phone cradle
Slide the lower end of the mobile phone
into connector contact 2 on mobile
phone cradle3.
Push the top of the mobile phone in di-
rection of arrow 1, until the lug on the
mobile phone release button engages.
The mobile phone is connected to the
network via the external antenna.
!Do not try to remove the mobile phone along
with the cradle. You could otherwise damage the
mobile phone cradle.

263 Controls in detail
Useful features
To activate, press the SOS button, the
Roadside Assistance button• or
the Information button¡, depend-
ing on the type of response required.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 10 seconds or do not come on). The
message
Tele Aid Inoperative appears
for approximately 10 seconds in the multi-
function display.
iThe SOS button is located in the overhead
control panel.
The Roadside Assistance button•
(
page 266) and the Information button¡
(
page 267) are located in the center armrest
storage/telephone* compartment.
!The Tele Aid system utilizes the cellular net-
work for communication and the GPS (Global
Positioning System) satellites for vehicle loca-
tion. If either of these signals are unavailable,
the Tele Aid system may not function and if this
occurs, assistance must be summoned by other
means.
iWhen a Tele Aid call has been initiated, the
audio system or COMAND* system audio is mut-
ed and the selected mode (radio, tape or CD)
pauses. The optional cellular phone* (if installed)
and inserted in cradle switches off. If you must
use this phone, we recommend that you use it
only with the vehicle at a standstill in a safe loca-
tion. Remove the phone from the cradle and
place the call. The COMAND* navigation system
(if engaged) will continue to run. The display in
the instrument cluster is available for use, and
spoken commands are only available by pressing
the RPT button on the COMAND* unit. A pop-up
window will appear in the COMAND* display to
indicate that a Tele Aid call is in progress. After
the Tele Aid call has ended, the optional cellular
phone switches on again. A PIN entry might be
necessary.

470 Index
Storage compartments 32, 253
Armrest 32, 253
Between seat backrests 32, 254
Cup holder 32, 255
Door pockets 32
Glove box 32, 253
Parcel net 32, 254
Storage tray 32
Telephone* 253
Telephone* compartment 32
Trunk 32
Storing tires 306
Summer opening*
Power windows 238
Retractable hardtop 244
Sun visors 169
Symbols in display 371
T
Tachometer 119
Tail lamps 402
Tar stains see Vehicle care
TDMA or CDMA network phones
(Telephone*) 226Technical data
Air conditioning refrigerant 453
Brake fluid 454
Coolants 456
Electrical system 448
Engine 441
Engine oil 453
Fuel additives 455
Fuel requirements 455
Fuels, coolants, lubricants, etc. 451
Headlamp cleaning system* 458
Main dimensions 449
Parts service 436
Premium unleaded gasoline 454
Rims and tires 442
Weights 450
Windshield washer system 458
Tele Aid system* 262
Call priority 268
Initiating an emergency call 265
Remote door unlock 269
Requirements 262
Roadside Assistance 266
Stolen Vehicle Recovery
services 269
System self-check 263Telephone* 259
Changing mobile phone cradle 261
GSM network phones 219
Inserting in cradle 260
Installing a different mobile phone
cradle 262
Operation 149, 193
Removing from cradle 261
Tightening torque
Wheel bolts 420
Time and date synchronization with head
unit* (Control system) 141
TIN 333
Tire and Loading Information 308
Tire and loading terminology 331
Tire care and maintenance 305
Tire Identification Number see TIN
Tire inflation pressure 411
Air pressure 331
Checking 311, 313
Checking tire pressure electronically,
Tire Pressure Monitoring System
(TPMS), (USA only) 317
Tire inspection 305
Tire load rating 333