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204
Controls in detail
Useful features
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 us-
ing the í and ì buttons on the
steering wheel. To carry out other tele-
phone functions, use the control system
(
୴ page 139).
See separate instruction manual for in-
structions on how to operate the tele-
phone.
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.
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.
1
Observe all legal requirements.
i
For additional information on operating
the telephone using the audio system
head unit, see “Telephone operation”
(
୴ page 160).
i
Standard Mercedes-Benz cellular
phone design shown, SLR phone de-
sign may vary.