battery MERCEDES-BENZ SL ROADSTER 2012 User Guide

X
Make sure that the key is in position 1or 2
in the ignition lock.
X To switch on: press button:repeatedly
until the desired heating level is set.
X To switch off: press button:repeatedly
until all the indicator lamps go out.
i If the battery voltage is too low, the seat
heating may switch off.
Problems with the seat heating The seat heating has switched off prema-
turely or cannot be switched on. The vehicle's
electrical system voltage is too low because
too many electrical consumers are switched
on.
X Switch off electrical consumers that you do
not need, such as the rear window heating or interior lighting.
X Once the battery is sufficiently charged,
switch the seat heating on again. Switching the seat ventilation on/off
Switching on/off The three blue indicator lamps in the buttons
indicate the ventilation level you have selec-
ted. X
Make sure that the key is in position 1or 2
in the ignition lock.
X To switch on: press button:repeatedly
until the desired ventilation level is set.
X To switch off: press button:repeatedly
until all the indicator lamps go out.
i If the battery voltage is too low, the seat
ventilation may switch off.
i If you open the roof with the key
(Y page 105), the seat ventilation of the
driver's seat switches on automatically and
the side windows open.
Problems with the seat ventilation The seat ventilation has switched off prema-
turely or cannot be switched on. The vehicle's
electrical system voltage is too low because
too many electrical consumers are switched
on.
X Switch off electrical consumers that you do
not need, such as the rear window heating
or interior lighting. AIRSCARF
Activating/deactivating G
WARNING
When AIRSCARF is switched on, very hot air
can flow from the vents in the head restraints. This could result in burns in the immediate
vicinity of the air vents. There is a risk of injury.
Reduce the heater output before it becomes
too hot. Seats
117Seats, steering wheel and mirrors Z

The AIRSCARF function warms the head and
neck area of vehicle occupants with warm air.
The warm air flows out of the holes in the head restraints.
The three red indicator lamps in the button
indicate the heating level you have selected.
X Make sure that the key is in position 2in the
ignition lock.
X To switch on: press button:.
Three red indicator lamps in the button light up. The blower starts up after a preheating
phase of seven seconds.
X Press button :repeatedly until the
desired heating level is set.
X To switch off: press button:repeatedly
until all the indicator lamps go out.
i The blower continues running for seven
seconds to cool down the heating ele-
ments.
i If the battery voltage is too low, AIRSCARF
may switch off. steering wheel
Important safety notes
G
WARNING
You could lose control of the vehicle while
driving if you:
R adjust the driver's seat, steering wheel or
mirrors
R fasten the seat belt
There is a risk of an accident. Adjust the driver's seat, head restraint, steer-
ing wheel and mirrors and fasten your seat
belt before starting the engine. G
WARNING
If the steering wheel lock is engaged, the vehi- cle can no longer be steered. There is a risk of
an accident.
Always switch on the ignition when towing
with a tow rope or a towing bar. Adjusting the steering wheel electri-
cally
:
To adjust the steering wheel height
; To adjust the steering wheel position
(fore-and-aft adjustment)
i Further related subjects:
R EASY-ENTRY/EXIT feature
(Y page 118)
R storing settings (Y page 123) EASY-ENTRY/EXIT feature
Important safety notes G
WARNING
If you drive off while the EASY-ENTRY/EXIT
feature is making adjustments, you could lose
control of the vehicle. There is a risk of an
accident.
Always wait until the adjustment process is
complete before driving off. 118
steering wheelSeats, steering wheel and mirrors

Folding the exterior mirrors in/out elec-
trically X
Make sure that the key is in position 1or 2
in the ignition lock.
X Briefly press button :.
Both exterior mirrors fold in or out.
i Make sure that the exterior mirrors are
always folded out fully while driving. They
could otherwise vibrate.
Setting the exterior mirrors If the battery has been disconnected or com-
pletely discharged, the exterior mirrors must
be reset. The exterior mirrors will otherwise
not fold in when you select the "Fold in mir-
rors when locking" function in the on-board
computer (Y page 243).
X Make sure that the key is in position 1in the
ignition lock.
X Briefly press button :.
Folding the exterior mirrors in/out
automatically If the "Fold in mirrors when locking" function
is activated in the on-board computer
(Y page 243):
R the exterior mirrors fold in automatically as
soon as you lock the vehicle from the out-
side
R the exterior mirrors fold out again automat-
ically as soon as you unlock the vehicle and
then open the driver's or front-passenger
door i
The exterior mirrors do not fold out if they
have been folded in manually.
Exterior mirror pushed out of position If an exterior mirror has been pushed out of
position, proceed as follows:
X Vehicles without electrically folding
exterior mirrors: move the exterior mirror
into the correct position manually.
X Vehicles with electrically folding exte-
rior mirrors: press and hold mirror-folding
button :until you hear a click and the
mirror engages audibly into position
(Y page 121).
The mirror housing is engaged again and
you can adjust the exterior mirrors as usual
(Y page 120). Automatic anti-dazzle mirrors
The rear-view mirror and the exterior mirror
on the driver's side automatically go into anti- dazzle mode if the following conditions are
met simultaneously:
R the ignition is switched on and
R incident light from headlamps strikes the
sensor in the rear-view mirror
The mirrors do not dip if reverse gear is
engaged or if the interior lighting is switched
on. Mirrors
121Seats, steering wheel and mirrors Z

1
W
Left-hand parking lamps
2 X
Right-hand parking lamps
3 T
Side lamps, licence plate and instru-
ment cluster lighting
4 Ã
Automatic headlamp mode, control-
led by the light sensor
5 L
Dipped-beam/main-beam head-
lamps
B R
Rear foglamp
When the ignition is switched on and the light
switch is in position L, the side lamps and
dipped-beam headlamps are switched on
even if the light sensor does not sense dark
ambient light conditions. This is advanta-
geous when there is fog or rain.
X To switch on the dipped-beam head-
lamps: turn the key in the ignition lock to
position 2or start the engine.
X Turn the light switch to L.
The green Lindicator lamp in the instru-
ment cluster lights up. Rear foglamp 1
W
Left-hand parking lamps
2 X
Right-hand parking lamps
3 T
Side lamps, licence plate and instru-
ment cluster lighting
4 Ã
Automatic headlamp mode, control-
led by the light sensor
5 L
Dipped-beam/main-beam head-
lamps
B R
Rear foglamp
The rear foglamp improves the visibility of
your vehicle in heavy fog for the following
traffic. Please observe the country-specific
laws on the use of rear foglamps.
X To switch on the rear foglamp: turn the
key in the ignition lock to position 2or start
the engine.
X Turn the light switch to LorÃ.
X Press the Rbutton.
The yellow Rindicator lamp in the
instrument cluster lights up.
X To switch off the rear foglamp: press the
R button.
The yellow Rindicator lamp in the
instrument cluster goes out.
Side lamps ! If the battery has been excessively dis-
charged, the side lamps or parking lamps
are automatically switched off to enable
the next engine start. Always park your
vehicle safely and sufficiently lit according
to legal standards. Avoid the continuous
use of the Tside lamps for several 128
Exterior lightingLights and windscreen wipers

Interior lighting
Overview of interior lighting
Overhead control panel
:
p Switches the left-hand reading lamp
on/off
; c Switches the interior lighting on
= | Switches the interior lighting/auto-
matic interior lighting control off
? p Switches the right-hand reading
lamp on/off
A To switch the automatic interior lighting
control on Interior lighting control
General notes In order to prevent the vehicle's battery from
discharging, the interior lighting functions are
automatically deactivated after some time
except for when the key is in position 2in the
ignition lock. Automatic interior lighting control Overhead control panel
:
p To switch the left-hand reading lamp
on/off
; c To switch the interior lighting on
= | To switch the interior lighting/auto-
matic interior lighting control off
? p To switch the right-hand reading
lamp on/off
A To switch the automatic interior lighting
control on
X To switch on: set the switch to centre
position A.
X To switch off: set the switch to the |
position.
The interior lighting automatically switches
on if you:
R unlock the vehicle
R open a door
R remove the key from the ignition lock
The interior lighting is activated for a short
time when the key is removed from the igni-
tion lock. You can activate this delayed
switch-off using the on-board computer
(Y page 241). 134
Interior lightingLights and windscreen wipers

Air-recirculation mode remains deactiva-
ted.
or
X Press the Ãbutton.
The indicator lamp in the ¬button goes
out. Airflow and air distribution are set to
automatic mode.
or X Turn the temperature controls on the left or
the right on the climate control panel clock- wise or anti-clockwise.
Turn temperature controls :orD clock-
wise or anti-clockwise (Y page 141).
or
X Press the KorI button. Demisting the windows
Windows misted up on the inside X
Activate the ¿cooling with air dehu-
midification function.
X Activate the Ãmode button.
X If the windows continue to mist up, activate
the ¬ "Windscreen demisting" function.
i You should only select this setting until
the windscreen is clear again.
Windows misted up on the outside X
Activate the windscreen wipers.
X Press the _button repeatedly until the
P orO symbol appears in the dis-
play.
i You should only select this setting until
the windscreen is clear again. Rear window heating
General notes The rear window heating has a high current
draw. You should therefore switch it off as
soon as the window is clear. It otherwise
switches off automatically after several
minutes.
If the battery voltage is too low, the rear win-
dow heating may switch off.
Activating/deactivating X
Turn the key to position 2in the ignition
lock (Y page 155).
X Press button ¤.
The indicator lamp in the ¤button lights
up or goes out. Operating the climate control system
147Climate control

Problems with the rear window heating
Problem
Possible causes/consequences and
M
MSolutions The rear window heat-
ing has switched off
prematurely or cannot
be activated. The on-board voltage is too low because too many electrical con-
sumers are switched on.
X Switch off any consumers that are not required, e.g. reading
lamps, interior lighting or the seat heating.
When the battery is sufficiently charged, the rear window heat-
ing can be activated again. Activating/deactivating air-recircula-
tion mode
General notes If you switch on air-recirculation mode, the
windows can mist up more quickly, in partic-
ular at low temperatures. Only use air-recir-
culation mode briefly to prevent the windows
misting up.
Activating/deactivating X
Turn the key to position 2in the ignition
lock (Y page 155).
X To activate: press thegbutton.
The indicator lamp in the gbutton lights
up.
i Air-recirculation mode is automatically
activated at high levels of pollution or at
high outside temperatures. When air-recir-
culation mode is activated automatically,
the indicator lamp in the gbutton is not lit. Outside air is added after about
30 minutes.
X To deactivate: press thegbutton.
The indicator lamp in the gbutton goes
out.
i Air-recirculation mode is deactivated
automatically:
R after around five minutes at outside tem-
peratures below approximately 5 †
R after approximately five minutes if cool-
ing with air dehumidification is deactiva- ted
R after around 30 minutes at outside tem-
peratures above approximately 5 †if the
"Cooling with air dehumidification" func- tion is activated Convenience opening/closing using
the air-recirculation button
G
WARNING
When using convenience closing, you could
become trapped within the sweep of the clos- ing window. There is a risk of injury.
Monitor the entire closing procedure when
using convenience closing. When closing,
make sure that no one has any parts of the
body within the closing area. G
WARNING
During convenience opening parts of the body could be drawn in or become trapped 148
Operating the climate control systemClimate control

Residual heat is deactivated automatically:
R after approximately 30 minutes
R when the ignition is switched on
R if the battery voltage drops Adjusting the air vents
Important safety notes
G
WARNING
Very hot or very cold air can flow from the air vents. This could result in burns or frostbite in the immediate vicinity of the air vents. There
is a risk of injury.
Make sure that all vehicle occupants always
maintain a sufficient distance to the air out-
lets. If necessary, redirect the airflow to
another area of the vehicle interior. G
WARNING
When AIRSCARF is switched on, very hot air
can flow from the vents in the head restraints. This could result in burns in the immediate
vicinity of the air vents. There is a risk of injury.
Reduce the heater output before it becomes
too hot.
In order to ensure the direct flow of fresh air
through the air vents into the vehicle interior, please observe the following notes:
R keep the air inlet grille on the bonnet and in
the engine compartment on the front-
passenger side free of blockages, such as
ice, snow or leaves.
R never cover the vents or ventilation grilles
in the vehicle interior.
i You can move the adjusters for the air
vents vertically or horizontally to set the
direction of the airflow.
i Optimal climate control function is ach-
ieved by opening the air vents fully and set-
ting the adjusters to the middle position. Setting the centre air vents
X
To open the centre air vent: turn the
adjuster in one of centre air vents :anti-
clockwise.
X To close the centre air vent: turn the
adjuster in one of centre air vents :clock-
wise until it engages. Adjusting the side air vents
:
Side window demister vent
; Side air vent
X To open a side air vent: turn the adjuster
in side air vent ;anti-clockwise.
X To close a side air vent: turn the adjuster
in side air vent ;clockwise until it
engages. Adjusting the glove compartment air
vent
! Close the air vent when heating the vehi-
cle. 150
Adjusting the air ventsClimate cont
rol

General notes
:
ECO start/stop display
If the ¤ symbol is shown in green in the
multifunction display, the ECO start/stop
function switches the engine off automati-
cally if the vehicle stops moving.
The ECO start/stop function is activated
whenever you switch on the engine using the
key or the Start/Stop button.
If the ECO start/stop function has been man- ually deactivated (Y page 160) or a malfunc-
tion has caused the system to be deactivated, the ¤ symbol is not displayed.
AMG vehicles: the ECO start/stop function
is only available in drive program C.
For further information on automatic engine
switch-off (Y page 159) and automatic
engine start (Y page 159).
Automatic engine switch-off If the vehicle is braked to a standstill in
Dor N,
the ECO start/stop function switches off the engine automatically.
The ECO start/stop function is operational
and the ¤symbol is lit green in the multi-
function display if:
R the indicator lamp in the ECO button is lit
green
R the outside temperature is within the range
that is suitable for the system
R the engine is at normal operating temper-
ature
R the set temperature for the vehicle interior
has been reached
R the battery is sufficiently charged R
the system detects that the windscreen is
not misted up when the air-conditioning
system is switched on
R the bonnet is closed
R the driver's door is closed and the driver's
seat belt is fastened
If the conditions for automatic engine switch- off are not all fulfilled, the ¤symbol is lit
yellow.
i All of the vehicle's systems remain active
when the engine is switched off automati-
cally.
i All vehicles (except AMG vehicles):
automatic engine switch-off can take place a maximum of four times consecutively (ini-
tial stop, then three subsequent stops). The
¤ symbol is lit yellow in the multifunc-
tion display after the engine has been star- ted automatically for the fourth time. Whenthe ¤ symbol is lit green in the multi-
function display, automatic engine switch-
off is again possible.
i AMG vehicles:
the number of consecu-
tive automatic engine stops is unlimited.
i The HOLD function can be activated if the
engine has been switched off automati-
cally. It is then not necessary to continue
applying the brakes during the automatic
stop phase. When you depress the accel-
erator pedal, the engine starts automati-
cally and the braking effect of the HOLD
function is deactivated.
Automatic engine start The engine is started automatically if:
R
you switch off the ECO start/stop function
by pressing the ECO button
R in transmission position Dor N, the brake
pedal is released and the HOLD function is not active
R you depress the accelerator pedal
R you engage reverse gear R Driving
159Driving and parking Z

R
you move the transmission out of position
P
R you switch to drive program S, S+orM
(AMG vehicles)
R you unfasten your seat belt or open the
driver's door
R the vehicle starts to roll
R the brake system requires this
R the temperature in the vehicle interior devi-
ates from the set range
R the system detects moisture on the wind-
screen when the air-conditioning system is
switched on
R the battery's charge status is too low
i Shifting the transmission to position
P
does not start the engine.
i If you shift the transmission from
Rto D,
the ECO start/stop function is available
again once the ¤symbol reappears in
green in the multifunction display.
Deactivating/activating the ECO start/
stop function ECO button
Deactivating (except for AMG vehicles)
X Press button :.
Indicator lamp ;and the ¤symbol in
the multifunction display go out.
Activating (except for AMG vehicles)
X Press button :.
Indicator lamp ;lights up. If all conditions
for automatic engine switch-off (Y
page 159) are met, the ¤symbol is lit
green in the multifunction display.
If not all conditions for automatic engine
switch-off (Y page 159) are met, the ¤
symbol is lit yellow in the multifunction dis- play. If this is the case, the ECO start/stop
function is not available.
i If indicator lamp
;is off, the ECO start/
stop function has been deactivated man-
ually or as the result of a malfunction. The
engine will then not be switched off auto-
matically when the vehicle stops. ECO button in AMG vehicles
Deactivating (AMG vehicles)
X Press button :in drive program C.
or
X Switch to drive program S,S+ orM
(Y page 168).
Indicator lamp ;and the ¤symbol in
the multifunction display go out.
Activating (AMG vehicles)
X Press button :.
Indicator lamp ;lights up.
If drive program S,S+ orMis active, the
automatic transmission switches to drive
program C.
If all conditions for automatic engine
switch-off (Y page 159) are met, the ¤
symbol is lit green in the multifunction dis- play.
If not all conditions for automatic engine
switch-off (Y page 159) are met, the ¤
symbol is shown in yellow in the multifunc- 160
DrivingDriving and pa
rking