Page 173 of 506

171 Controls in detail
Control system
Resetting fuel consumption statistics
Press buttonÿ orè repeatedly 
until you see the first function of the 
Trip computer menu.
Press buttonj ork repeatedly 
until you see the reading that you want 
to reset in the display.
Press and hold the reset button in the 
instrument cluster (
page 24) until 
the value is reset to 0.
Call up range (distance to empty)
Press buttonÿ orè repeatedly 
until you see the first function of the 
Trip computer menu.
Press buttonj ork repeatedly 
until you see this message in the dis-
play: 
Range:
In the display you will see the calculat-
ed range based on the current fuel tank 
level.
TEL 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 COMAND.
Press buttonÿ orè on the 
steering wheel repeatedly until you see 
the 
Tel
 menu in 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 while driving, please use the 
hands-free device and only use the tele-
phone when weather, road and traffic condi-
tions 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 (approximate-
ly 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, pos-
sibly resulting in an accident and/or 
personal injury. 
     
        
        Page 272 of 506

270 Controls in detailUseful featuresHeated steering wheel*
The steering wheel heating warms up the 
leather area of the steering wheel.
The stalk with the heated steering wheel 
switch is on the lower left-hand side of the 
steering wheel.
1Indicator lamp
2Switching off
3Switching onSwitching on
Switch on the ignition (
page 33).
Turn switch at the tip of stalk in the di-
rection of arrow3.
The steering wheel is heated. Indicator 
lamp1 comes on.
Switching off
Turn switch at the tip of stalk in direc-
tion of arrow2.
The heated steering wheel is turned off. 
Indicator lamp1 goes out.
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.
iThe steering wheel heating does not 
turn off automatically.
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. 
     
        
        Page 298 of 506

296 OperationDriving instructionsTelephones 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 an-
tenna.
Catalytic converter (Gasoline engine)
Your Mercedes-Benz is equipped with 
monolithic-type catalytic converters, an 
important element in conjunction with the 
oxygen sensors to achieve substantial con-
trol of the pollutants in the exhaust emis-
sions. Keep your vehicle in proper 
operating condition by following our rec-
ommended maintenance instructions as 
outlined in your Maintenance Booklet.
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 
personal injury.
!To prevent damage to the catalytic con-
verters, only use premium unleaded 
gasoline in this vehicle.
Any noticeable irregularities in engine 
operation should be repaired promptly. 
Otherwise, excessive unburned fuel 
may reach the catalytic converter, 
causing it to overheat, which could po-
tentially start a fire.
Warning!
G
As with any vehicle, do not idle, park or op-
erate this vehicle in areas where combusti-
ble materials such as grass, hay or leaves 
can come into contact with the hot exhaust 
system, as these materials could be ignited 
and cause a vehicle fire.