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127 Automatic climate control
Technical
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Air recirculation
This mode can be selected to temporarily reduce the
entry of annoying odors or dust into the vehicle’s
interior.
Outside air is not supplied to the vehicle’s interior.
To select, press O button.
To c a nc el, pr ess O button again.
The system will automatically switch from recirculated
air to fresh air
•after approx. 5 minutes at outside temperatures
below approx. 40
°F (5
°C),
•after approx. 30 minutes at outside temperatures
above approx. 40
°F (5
°C),
•after approx. 5 minutes, if button S is pressed.
If the windows should fog up from the inside, switch
from recirculated air back to fresh air.
At high outside temperatures, the system automatically
engages the recirculated air mode thereby increasing
the cooling capacity performance, switching to partially
fresh air within 30 minutes.Residual engine heat utilization
With the engine switched off, it is possible to continue
heating the interior for a short while.
Air volume and distribution are controlled
automatically.
To s e l e c t :
Turn electronic key in steering lock to position 1 or 0 or
remove key.
Press T button
This function selection will not activate if the battery
charge level is insufficient.
To c a n c e l :
Press T button.
The system will automatically shut off
•if you turn electronic key in steering lock to
position 2,
•after approx. 30 minutes,
•if the battery voltage drops.
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128 Automatic climate control
Technical
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Dust filter
Nearly all dust particles and pollen are filtered out
before outside air enters the passenger compartment
through the air distribution system.
Notes:
Do not obstruct the air f low by placing objects on the air
flow–through exhaust slots below the rear window.
Also keep the air intake grille in front of windshield free
of snow and debris.Important!
This vehicle is equipped with an air conditioner system
that uses R–134a (HFC: hydrofluorocarbon) as a
refrigerant. Repairs should always be performed by a
qualified technician, and refrigerant should be collected
in a recovery system for recycling.
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Page 132 of 330

129 Audio system
Technical
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Audio and telephone, operation
These instructions are intended to help you become
acquainted with your Mercedes-Benz vehicle radio.
They contain useful tips and a detailed description of
the user functions.
The right to correct errors and make technical amendments is
reserved.
Operating safety1Optional equipment
Dolby and the double-D symbol
Ù
are trademarks of Dolby
laboratories Licensing Corporation. The Dolby noise reduction
system is manufactured under licence from Dolby Laboratories
Licensing Corporation.
Wa r n i n g !
In order to avoid distraction which could lead to an
accident, system settings should be entered with
the vehicle at standstill and systems should be
operated by the driver only when traffic conditions
permit. Always pay full attention to traffic
conditions first before operating system controls
while driving. Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is covering
a distance of approximately 50 feet (approximately
14 m) every second.
Wa r n i n g !
Any alternations made to electronic components
can cause malfunctions.The radio, cassette deck, CD changer
1 and
telephone
1 are interconnected. Therefore, when
one of the components is defective or has not been
removed/replaced properly this may impair the
function of other components.
These malfunctions might seriously impair the
operating safety of your vehicle.We recommend that you have any service work or
alternations on electronic components done in an
authorized Mercedes-Benz Center.
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130 Audio system
Technical
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Operating and display elements
1On/off, volume, see page 133
2Telephone mode selector, see page 144
3Seek, see page 135, 138 and 142
4Radio mode selector, see page 135
5Tune, see page 135 and 136
Fast forward/reverse, see page 139 and 142
6CD mode selector, see page 1417Display panel
The cassette slot is located behind the display panel.
For notes on playing cassettes, see page 137
8Alpha-numeric keypad for
station storage and frequency entry, see page 136
CD/Track access, see page 138 and 143
optional telephone, see page 144
9Function button, see page 136 and 143
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131 Audio system
Technical
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index 10Soft keys for
radio band selection, see page 135
tone controls, see page 133
scan, see page 136
Tape eject, see page 138
Tape track select, see page 138
Dolby, see page 139
CD random/repeat, see page 143
11Tape mode selector, see page 137
Anti-theft system
If the power supply to the
radio has been interrupted,
“CODE” will appear on the
display when it is next
switched on. The radio will
only work after the five-digit code has been entered
using the buttons on the right-hand control panel.The code number is shown on the Radio code card,
supplied with the radio.
Important!
Never leave the Radio code card in the vehicle. Keep it in
a safe place.
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132 Audio system
Technical
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Entering the code number
Switch on the radio. “CODE” will appear on the display.
Using the buttons on the alpha-numeric keypad, enter
the five digit code. Confirm by pressing the “OK” key.
If an incorrect code has been entered and confirmed,
“CODE” will reappear on the display. The correct code
must be entered once again.
If an incorrect code is entered
three times, “WAIT” will
appear on the display and the
radio will be locked out for
about 10 minutes.
Note:
The lock out tim e will on ly count down i f t he rad io is lef t
switched on.Button and soft key operation
In these instructions, the alpha-numeric keypad (right
side of radio face) and the function buttons (left side of
the radio face) are referred to as “buttons” and the four
keys under the display are referred to as “soft keys”.
Note:
Do not press directly on the radio display face.
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133 Audio system
Technical
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Operation
Switching on and off
Press the control knob .
The radio is swi tched of f when t he igni ti on key i s turne d
to position 0 or removed from the ignition. The radio is
switched on again when the ignition key is turned to
position 1 or 2.
Note:
The radio can also be switched on even if the ignition
key is not inserted, but will switch itself off
automatically after one hour to conserve vehicle battery
power.
Adjusting the volume
Turn the control knob - turning the knob clockwise will
increase the volume, counterclockwise will decrease the
volume.Audio functions
The AUD key is used to select the BASS, TREBLE,
FADER and BALANCE functions. Settings for bass and
treble are stored separately for the cassette and CD
modes. Tone level settings are identified by the vertical
bars. The cen ter (f lat) s ettin g is shown by one lon ger bar
in the center of the display.
Bass
Press the AUD key repeatedly
until “BASS” appears in the
display.
Treble
Press the AUD key repeatedly
un til “ TREB LE” ap pears in the
display.
Press the “+” key to increase
or the “-” key to decrease the level.
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134 Audio system
Technical
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Fader
1
Press the AUD key repeatedly
until “FADER” appears on the
display. Press the “R” key to
move the sound to the rear
speakers or the “F” key to
move the sound to the front speakers.
Balance
Press the AUD key repeatedly
until “BALANCE” appears in
the display.
Press the “L” key to move the
sound to the left speaker or the “R” key to move the
sound to the right speaker.
1 not available on all models
Centering all audio functions
Push and hold down the
“AUD” key. All audio
functions (bass, treble,
balance and fader) are set to
center or flat positions, and
the volume is adjusted to a pre-set level.
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