Page 161 of 506

160 Controls in detailControl systemTEL menu*
You can use the functions in the 
Tel
 menu 
to operate your telephone, provided it is 
connected to a hands-free system and 
switched on.
Switch on the telephone and Audio or 
COMAND*.
Press buttonÿ orè on the 
steering wheel repeatedly until the 
message 
Tel
 appears in the 
multifunction display.Which messages will appear in the 
multifunction display depends on whether 
your telephone is switched on or off:
If the telephone is off, the message Tel off
 appears in the multifunction 
display.
If the telephone is on:
The telephone will then search for a 
network. During this time the multi-
function display is empty.
As soon as the telephone has found a 
network, the message 
READY
 appears in 
the multifunction display.
This standby message indicates that your 
telephone is ready for use and you can 
operate it using the control system.
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 
recommend that you pull over to a safe 
location and stop before placing or taking a 
telephone call. If you choose to use the 
telephone while driving, please use the 
hands-free device and only use the tele-
phone when weather, road and traffic 
conditions permit.
Some jurisdictions prohibit the driver from 
using a cellular telephone while driving a 
vehicle.
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.
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, 
possibly resulting in an accident and /or 
personal injury. 
     
        
        Page 277 of 506

276 Controls in detailUseful featuresTelephone*
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.You can take and place telephone calls 
using thes andt buttons on the 
steering wheel. To carry out other tele-
phone functions, use the control system 
(
page 160).
See separate operating manual for instruc-
tions on how to use the telephone.
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 audio system or CO-
MAND* (Cockpit Management and Data 
System)
1 if road, weather an traffic condi-
tions permit.
1Observe all legal requirements.
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. 
     
        
        Page 300 of 506

299 Operation
Driving instructions
Passenger compartmentDriving abroad
Abroad, there is an extensive 
Mercedes-Benz service network at your 
disposal. If you plan to drive into areas 
which are not listed in the index of your 
Mercedes-Benz Center directory, you 
should request pertinent information from 
an authorized Mercedes-Benz Center.Control and operation of radio trans-
mitters
COMAND*, radio and telephone*Telephones* and two-way radios
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.
Refer to the radio transmitter operation in-
structions regarding use of an external 
antenna.
Warning!
G
Always fasten items being carried as 
securely as possible.
In an accident, during hard braking or sud-
den maneuvers, loose items will be thrown 
around inside the vehicle, and cause injury 
to vehicle occupants unless the items are 
securely fastened in the vehicle.
The trunk is the preferred place to carry 
objects.
Warning!
G
Please do not forget that your primary re-
sponsibility is to drive the vehicle safely. 
Only operate the COMAND (Cockpit Man-
agement and Data System), radio or tele-
phone
1 if road, weather and traffic 
conditions 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.
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.