Ec button MERCEDES-BENZ SLK 230 KOMPRESSOR 2002 R170 Owner's Guide

80 Checking engine oil level
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Perform the oil level check with the dipstick, if it cannot
be completed via the odometer display field. In this case
we recommend that you have the system checked at a
Mercedes-Benz Center.
Notes:
If the symbols : and I are continuously
illuminated after pressing left button on the instrument
cluster twice and there is no change in the odometer
display field or the low engine oil level warning lamp
comes on, a malfunction has occurred to the system.
Perform the engine oil level check with the dipstick.
If no oil leaks are noted continue to drive to the nearest
Mercedes-Benz Center to have the system checked.Engine oil consumption
Engine oil consumption checks should only be made
after the break-in period. During the break-in period,
higher oil consumption may be noticed and is normal.
Frequent driving at high engine speeds results in
increased consumption.

90 Climate control
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Windshield fogged up on outside.
Switch on windshield wipers.
Set air distribution control switch to position d
ora.
Economy
The function of this setting corresponds to the air
conditioning mode. However, because the air
conditioning compressor will not engage (fuel savings),
it is not possible to air condition in this setting.
Press S button to activate.
Press S button once again to return to previous
setting.
Climate control - OFF
To switch the climate control off, set air volume control
switch to position 0.
The fresh air supply to the vehicle interior is shut off.
While driving, use this setting only temporarily,
otherwise the windshield could fog up.Rear window defroster
Turn key in steering lock to position 2.
To s e l e c t , p r e s s F button.
To cancel, press F button again.
Note:
Heavy accumulation of snow and ice should be removed
before activating the defroster.
The rear window defroster uses a large amount of power.
To keep the battery drain to a minimum, turn off the
defroster as soon as the window is clear.
The defroster is automatically turned off after a
maximum of 12 minutes of operation.
If several power consumers are turned on
simultaneously, or the battery is only partially charged,
it is possible that the defroster will automatically turn
itself off. When this happens, the indicator lamp inside
the switch starts blinking.
As soon as the battery has sufficient voltage, the
defroster automatically turns itself back on.

91 Climate control
Te ch n i c a l
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 s el ect , p res s O button.
To cancel, press O button again.
The system will automatically switch from recirculated
air to fresh air
•after approximately 5 minutes at outside
temperatures below approximately 40°F (5°C),
•after approximately 30 minutes, at outside
temperatures above approximately 40°F (5°C),
•after approximately 5 minutes, if button S is
pressed.
At high outside temperatures, the system automatically
engages the recirculated air mode for approximately
30 minutes, thereby increasing the cooling capacity
performance. Press O button again to extend the
recirculated air mode.Residual engine heat utilization (REST)
With the engine switched off, it is possible to continue
heating the interior for a short while.
Air volume is controlled automatically. Select
temperature for each side of the passenger
compartment. Set air distribution control switch to the
desired position.
To s e l e c t :
Turn key in steering lock to position 1 or 0 or remove.
Press O button. Indicator lamp in the button lights
up.
This function selection will not activate if the battery
charge level is insufficient.
To c a n c e l :
Press O button. Indicator lamp in the button goes
out.
The system will automatically shut off
•if you turn key in steering lock to position 2,
•after approximately 30 minutes,
•if the battery voltage drops.

94 Audio system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Operating and display elements
1On / off, volume, see page 97
2Telephone mode selector, see page 108
3Seek, see page 99, 102 and 106
4Radio mode selector, see page 99
5Tune, see page 99 and 100
Fast forward / reverse, see page 103 and 1066CD mode selector, see page 105
7Display panel, see page 101
8Alpha-numeric keypad for
station storage and frequency entry, see page 100
CD / Track access, see page 105 and 107
optional telephone, see page 108
9Function button, see page 100 and 107


95 Audio system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index 10Soft keys for
radio band selection, see page 99
tone controls, see page 97
scan, see page 100
Tape eject, see page 102
Tape track select, see page 102
Dolby, see page 103
CD random / repeat, see page 107
11Tape mode selector, see page 101
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.

96 Audio system
Te ch n i c a l
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 time will only count down if the radio is left
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.

99 Audio system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Radio mode
Selecting radio mode
Press button.
Selecting the band
Press the key located below
the desired band. The band
selected is shown in the top
line of the display.Manual tuning
Press either the or
button. Step-by-step tuning in
ascending or descending
order of frequency will take
place.
The first three tuning steps will take place without
muting. The radio will then be muted and high-speed
tuning will take place until the button is released.
The following tuning intervals will be shown on the
display:
Seek tuning
Press either the or button. The radio will tune
to the next receivable station. Frequency ranges: FM 87.9 - 107.9 MHz
AM 530 - 1710 kHz
WB approx. 162 MHz
FM 200 kHz
AM 10 kHz
WB Channels 1-7

100 Audio system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Scan tuning
Press the SC key. Each strong
receivable station on the band
selected will be tuned in for
8 seconds. The first scan will
tune only the stations with a
high signal strength. The second scan will tune every
receivable station. By pressing either the , ,
or buttons, or the “SC” key the scan mode
can be cancelled.
Station memory
Ten stations can be stored in
the AM and FM bands via the
alpha-numeric keypad. The
“0” button corresponds to
location 10. Weatherband
(WB) channels 1 to 7 can be retrieved via the alpha-
numeric keypad and are preset at the factory.Storing stations
Hold the number button down for approximately
2 seconds. The currently displayed frequency is stored
on the selected station button. The storage procedure is
confirmed by a short signal tone.
Retrieving a station from memory
Press the desired station button.
Direct frequency input (AM and FM only)
Select the band. Press the
“ button and enter the
desired frequency using the
alpha-numeric keypad.
Frequencies outside of the
frequency ranges (frequencies specified on page 99)
will not be accepted. The frequency input mode is
cancelled if no button is pressed within 4 seconds.

101 Audio system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Cassette mode
Playing cassettes
Press the “TAPE” button. When the eject (EJ) key is
pressed, the display folds down and the cassette slot
becomes visible. Push the cassette into the slot until it
engages. The cassette will be pulled in automatically.
Notes:
Do not press directly on the radio display face.
Return the display panel to its normal position by
folding it back up and pressing gently on the display
frame to lock in place.
When playing mono recorded tapes (e.g. books) through
a stereo system the sound from one track might bleed to
the other track, despite setting the balance to the full
left or full right speakers.
Important:
If the display is in the down position for more than
20 seconds, 2 successive beeps will be heard. This will
continue at 5 second intervals until the display is
returned to its normal position.The radio will switch to
cassette mode. Track 1 will be
played and “SIDE 1”
displayed. Track 1 is the side
of the cassette which is facing
upwards. The cassette deck will automatically detect the
type of tape and switch the equalization automatically.
A cassette symbol in the display indicates that a tape is
in the mechanism. This symbol appears in all modes but
not in cassette mode.
The cassette will not be ejected when the radio is
switched off or another mode is selected.
If a cassette is in the
mechanism, cassette mode
can be selected by using the
“TAPE” button. If no cassette
has been inserted, the display
will show “NO TAPE”.

102 Audio system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Cassette eject
Press the eject (EJ) key. The display will fold down and
the cassette will be ejected. Remove the cassette, then
fold the display back up manually. The radio will switch
back to radio mode automatically.
Note:
The cassette will not be ejected when the radio is
switched off.
Important!
If the display is in the down position for more than
20 seconds, 2 successive beeps will be heard. This will
continue at 5 second intervals until the display is
returned to its normal position.
Track selection
Press the track selection
(TRK) key. The current track
will be displayed as “SIDE 1”
or “SIDE 2”. The track will be
changed automatically at the
end of the tape.Track search forwards / backwards
Press the button.
“SEEK FWD” will be shown on
the display and the track
search will run the tape
forwards to the start of the
next track.
Press the button.
“SEEK RWD” will be shown
on the display and the track
search will run the tape
backwards to the start of the
track currently playing. Track search can be interrupted
by pressing the same button again.
Note:
The beginning of a track can only be located if there is a
break of at least 4 seconds between tracks.