
81 Flexible service system
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index The counter can also be set by any individual. To do so:
1. Turn key in steering lock to position 2.
2. Within 4 seconds press button (1) twice.
3. The present status for days or distance is displayed. 
Within 10 seconds turn key in steering lock to 
position 0.
4. Press and hold button (1), while turning key in 
steering lock to position 2 again. The present status 
for days or distance is displayed once more. 
Continue to hold button (1).
After approx. 10 seconds a signal sounds, and the 
display shows 10 000 miles (Canada: 15 000 km) for 
approx. 10 seconds.
5. Release button (1).
If the FSS counter was inadvertently reset, have a 
Mercedes-Benz Center correct it.Note:
When disconnecting vehicle battery for one or more 
days at a time, such days will not be counted. Any such 
days not counted by FSS can be added by your 
Mercedes-Benz Center.
The interval between services is determined by the kind 
of vehicle operation. For example driving at extreme 
speeds, and cold starts combined with short distance 
driving in which the engine does not reach normal 
operating temperature, reduce the interval between 
services.
Model SL 500
The FSS allows for distances between 10 000 miles 
(Canada: 15 000 km) and 20 000 miles (Canada: 
30 000 km), or from 365 to 730 days between services.
Model SL 600
The FSS allows for distances between 10 000 miles 
(Canada: 15 000 km) and 16 000 miles (Canada: 
25 000 km), or from 365 to 730 days between services.
However you choose to set your reference numbers, the 
scheduled services as posted in the Service Booklet 
must be followed to properly care for your vehicle. 

95 Automatic climate control
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Rear window defroster
(only functions with hardtop installed)
Turn electronic key in steering lock to position 2.
To select, press 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.Air distribution
Press b button repeatedly until the requested 
symbol is displayed.
Air volume
Press “-” or “+” side of rocker switch ï until the 
requested blower speed is attained. A choice of 7 blower 
speeds is available.
To switch the automatic climate control off, press
“-” side of rocker switch ï until symbol OFF is 
displayed.
The fresh air supply to the car interior is shut off.
While driving, use this setting only temporarily, 
otherwise the windshield could fog up.
To switch the automatic climate control on again, 
pressU, P, or “+” side ofï. 

96 Automatic climate control
Te ch n ica 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 car’s interior.
To select, press O button.
To cancel, press 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.
Notes:
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 20 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 select:
Turn electronic key in steering lock to position 1 or 0 or 
remove electronic 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. 30minutes,
• if the battery voltage drops. 

102 Audio system
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Operation
Switching on and off
Press the control knob  .
The radio is switched off when the ignition key is turned 
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 and 
BALANCE functions. Settings for bass and treble are 
stored separately for the radio, cassette and CD modes. 
Tone level settings are identified by the vertical bars. 
The center (flat) setting is shown by one longer 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 
until “TREBLE” appears in the 
display.
Press the “+” key to increase 
or the “-” key to decrease the level. 

117 Interior equipment
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Express opening of door windows
Press switch k past resistance point and release – 
window lowers to fully open position. To interrupt 
procedure, briefly press j or k.
Note:
The power windows can also be closed with the key or 
infrared remote control while locking the vehicle doors 
or trunk, see page 41.
Important!
Do not close a door with the windows fully closed while 
the power supply is interrupted (battery disconnected or 
empty). Doing so could damage the window frame. 
The power windows should first be resynchronized.
After a power interruption, first synchronize the 
windows to enable activation of the soft top.Synchronizing power windows
When opening a door after the power supply was 
interrupted (battery disconnected or low), the window 
will open slightly, indicating that the express feature 
should be resynchronized.
Press j side of power window switch until the 
window is completely closed and hold for additional 2 
seconds. Repeat procedure for each window.
The automatic full opening procedure of the windows 
should now be restored. 

120 Interior equipment
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Interior lighting
Interior lamps
The switches are located above the inside rear view 
mirror.
1Interior lamps are switched on, and off (soft fade) 
delayed, when unlocking or locking the vehicle, or 
when opening or closing either door. However, there 
will be no (soft fade) delay when the key is in 
steering lock position 2.2Interior lamps switched off
3Interior lamps switched on continuously
Reading lamps
4Left reading lamp switched on
5Reading lamps switched off
6Right reading lamp switched on
Entrance lamps in footwells, exit lamps in doors
These lamps are switched on and off by the door contact 
switches.
Note:
To prevent the vehicle battery from being discharged, do 
not leave doors open for a long period of time.
1
2
3
4
5
6P68.00-0508-26 

142 Hardtop
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Notes:
For safety reasons, the hardtop can only be unlocked 
while the vehicle is standing still, and within 
10 seconds after turning the key to steering lock 
position 2 or beyond.
If the indicator lamp in the soft top switch blinks while 
activating the switch, the battery voltage may be 
insufficient - start engine to charge battery before 
shutting engine off and attempting to unlock the roof 
again.
If the indicator lamp continues to blink, remove the 
hardtop (see page 137), and have the system checked at 
your authorized Mercedes-Benz Center as soon as 
possible.
Wa r n i n g !
The raising or lowering procedure of the soft top is 
not completed if the indicator lamp in the soft top 
switch:
• does not go out (with key in steering lock 
position 2),
• blinks when starting to drive and an alarm 
sounds.When safe to do so, immediately stop the vehicle 
and lock the soft top:
• Turn key in steering lock to position 2,
• Slide soft/hardtop switch forward.Do not drive the car with the hardtop not locked, as 
that could cause personal injury to you or your 
passenger, or personal injury or property damage 
to others. 

147 Soft top
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index For safety reasons, the soft top cannot be unlocked 
while driving.
However, if the soft top is not completely locked, it can 
be locked while driving by pushing the soft/hardtop 
switch forward.
If the indicator lamp in the soft top switch blinks while 
activating the switch,
• the battery voltage may be insufficient - start engine 
and let run while activating switch,
• the system may be overloaded (for example after 
lowering or raising the soft top approx. 
5 consecutive times) - after approx. 2 minutes the 
soft top switch may be activated again,
• and the power supply was interrupted (battery 
disconnected or empty), the soft top cannot be fully 
raised or lowered.
To raise the soft top, for safety reasons, first remove key 
from steering lock. Lower soft top by hand into 
compartment, and resynchronize the power windows. 
See page 116.
To lower the soft top, first resynchronize the power 
windows. See page 116.If t he indicator la mp continues to bl ink, l ock  th e sof t top 
manually. See page 254.
Have the system checked at your authorized Mercedes-
Benz Center as soon as possible.
Note:
If the roll bar was raised automatically, the process of 
raising or lowering the soft top will take somewhat 
longer, as the roll bar must first be lowered.
Whenever possible, park vehicle in the shade as 
continuous exposure to sun rays can prematurely 
deteriorate the soft top material.
Permanent creases in the plastic window, caused by 
storage of the soft top in the storage compartment, 
cannot be avoided.
The soft top may become moldy if it is kept in the 
storage compartment for an extended period.
Therefore, we recommend raising and airing it 
thoroughly with the side windows open (do not expose 
it to the sun) at regular intervals during the wet and 
cold seasons.