key MERCEDES-BENZ SL-Class 2014 R131 Repair Manual

Problems with the "Cooling with air dehumidification" function
Problem Possible causes/consequences and
0050
0050Solutions The indicator lamp in
the
005A button
flashes three times or
remains off. The
"Cooling with air
dehumidification"
function cannot be
switched on. Cooling with air dehumidification has been deactivated due to a
malfunction.
X
Visit a qualified specialist workshop. Setting climate control to automatic
General notes In automatic mode, the set temperature is
maintained automatically at a constant level.
The system automatically regulates the
temperature of the dispensed air, the airflow
and the air distribution.
The automatic mode functions optimally
when the "Cooling with air dehumidification"
function is activated. If necessary, cooling
with air dehumidification can be deactivated.
If you deactivate the "Cooling with air-
dehumidification" function, the air inside the
vehicle will not be cooled. The air inside the
vehicle will also not be dehumidified. The
windows can fog up more quickly. Therefore,
deactivate the cooling with air-
dehumidification function only briefly.
Activating/switching X
Turn the SmartKey to position 2in the
ignition lock (Y page 155).
X Set the desired temperature.
X To activate: press the0058button.
The indicator lamp in the 0058button lights
up. Automatic air distribution and airflow
are activated.
i You can now select a climate mode when
automatic mode is activated
(Y page 145).
X To switch to manual mode: press the
008F button.
or
X Press the 0095or0097 button.
The indicator lamp in the 0058button goes
out. Adjusting the climate mode settings
You can select the following climate mode
settings in automatic mode:
FOCUS high airflow that is set slightly cooler
MEDIUM medium airflow, standard setting
DIFFUSE low airflow that is set slightly warmer and with less draft Operating the climate control systems
145Climate control

00F0
button (example)
X Turn the SmartKey to position 2in the
ignition lock (Y page 155).
X Press the 0058button.
X Press the 00F0button repeatedly until the
desired climate mode appears in the
display. Setting the temperature
Activating/deactivating Different temperatures can be set for the
driver's and front-passenger sides.
X Turn the SmartKey to position 2in the
ignition lock (Y page 155).
X Turn controls 0043or006C clockwise or
counter-clockwise (Y page 141).
Only change the temperature setting in
small increments. Start at 72 ‡ (22 †). Setting the air distribution
Activating/deactivating X
Turn the SmartKey to position 2in the
ignition lock (Y page 155).
X Press the 008Fbutton repeatedly until the
desired symbol appears in the display.
The following air distribution settings can be
selected:
009C Directs air through the center and side
air vents
009B Directs air through the footwell air
vents
009F Directs air through the center, side and
footwell vents
0061 Directs air through the defroster vents
0087 Directs the airflow through the
defroster, center and side air vents
(Canada only)
0086 Directs air through the defroster and
footwell vents
008F Directs the airflow through the
defroster, center and side air vents, as
well as the footwell air vents (Canada
only)
i Regardless of the air distribution setting,
airflow is always directed through the side
air vents. The side air vents can only be
closed when the controls on the side air
vents are turned downwards. 146
Operating the climate control systemsClimate control

Setting the airflow
Activating/deactivating X
Turn the SmartKey to position 2in the
ignition lock (Y page 155).
X To increase: press the0097button.
X To reduce: press the0095button. Switching the ZONE function on/off
X
To switch on: press the00D6button.
The indicator lamp in the 00D6button lights
up. The temperature setting for the driver's
side is not adopted for the front-passenger
side.
X To switch off: press button00D6.
The indicator lamp in the 00D6button goes
out. The temperature setting for the
driver's side is adopted for the front-
passenger side. Defrosting the windshield
Example:
0064button
You can use this function to defrost the
windshield or to defrost the inside of the
windshield and the side windows.
Switch off the "Windshield defrosting"
function as soon as the windshield is clear
again.
X Turn the SmartKey to position 2in the
ignition lock (Y page 155).
X To activate: press the0064button.
The indicator lamp in the 0064button lights
up.
The climate control system switches to the
following functions:
R high airflow
R high temperature
R air distribution to the windshield and
front side windows
R air-recirculation mode off
X To deactivate: press the0064button.
The indicator lamp in the 0064button goes
out. The previously selected settings are
restored. Air-recirculation mode remains
deactivated.
or
X Press the 0058button.
The indicator lamp in the 0064button goes
out. Airflow and air distribution are set to
automatic mode.
or Operating the climate control systems
147Climate control

Activating/deactivating
X
Turn the SmartKey to position 2in the
ignition lock (Y page 155).
X Press the 006Cbutton.
The indicator lamp in the 006Cbutton lights
up or goes out. Operating the climate control systems
149Climate control

Problems with the rear window defroster
Problem Possible causes/consequences and
0050
0050Solutions The rear window
defroster has
deactivated
prematurely or cannot
be activated. The on-board voltage is too low because too many electrical
consumers 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
defroster can be activated again. Activating/deactivating air-
recirculation mode
General notes If you switch on air-recirculation mode, the
windows can fog up more quickly, in
particular at low temperatures. Only use air-
recirculation mode briefly to prevent the
windows from fogging up.
Activating/deactivating X
Turn the SmartKey to position 2in the
ignition lock (Y page 155).
X To activate: press the0072button.
The indicator lamp in the 0072button lights
up.
i Air-recirculation mode is automatically
activated at high levels of pollution or at
high outside temperatures. When air-
recirculation mode is activated
automatically, the indicator lamp in the
0072 button is not lit. Outside air is added after about
30 minutes.
X To deactivate: press the0072button.
The indicator lamp in the 0072button goes
out.
i Air-recirculation mode deactivates
automatically:
R after approximately five minutes at
outside temperatures below
approximately 41 ‡ (5 †)
R after approximately five minutes if
cooling with air dehumidification is
deactivated
R after approximately 30 minutes at
outside temperatures above
approximately 41 ‡(5 †) if the "Cooling
with air dehumidification" function is
activated Activating/deactivating the residual
heat function
General notes 150
Operating the climate control systemsClimate control

The residual heat function is only available on
vehicles for Canada.
It is possible to make use of the residual heat
of the engine to continue heating the
stationary vehicle for up to 30 minutes after
the engine has been switched off. The heating
time depends on the temperature that has
been set.
Activating/deactivating X
Turn the SmartKey to position 0in the
ignition lock or remove it (Y page 155).
X To activate: press the004Bbutton.
The indicator lamp in the 004Bbutton lights
up.
i The blower will run at a low speed
regardless of the airflow setting.
i If you activate the residual heat function
at high temperatures, only the ventilation
will be activated. The blower runs at
medium speed.
X To deactivate: press the004Bbutton.
The indicator lamp in the 004Bbutton goes
out.
Residual heat is deactivated automatically:
R after approximately 30 minutes
R when the ignition is switched on
R if the battery voltage drops Setting 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
outlets. 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 hood and in
the engine compartment on the front-
passenger side free of blockages, such as
ice, snow or leaves.
R never cover the air vents or air intake 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 For optimal climate control in the vehicle,
open the air vents completely and set the
adjusters to the central position. Setting the center air vents
X
To open the center air vent: turn the
adjuster in one of center air vents 0043
counter-clockwise.
X To close the center air vent: turn the
adjuster in one of center air vents 0043
clockwise until it engages. Setting the air vents
151Climate control Z

G
WARNING
Unsuitable footwear can hinder correct usage
of the pedals, e.g.:
R shoes with thick soles
R shoes with high heels
R slippers
There is a risk of an accident.
Wear suitable footwear to ensure correct
usage of the pedals. G
WARNING
If you switch off the ignition while driving,
safety-relevant functions are only available
with limitations, or not at all. This could affect,
for example, the power steering and the brake
boosting effect. You will require considerably
more effort to steer and brake. There is a risk
of an accident.
Do not switch off the ignition while driving. G
WARNING
If the parking brake has not been fully
released when driving, the parking brake can:
R overheat and cause a fire
R lose its hold function.
There is a risk of fire and an accident. Release
the parking brake fully before driving off.
! Warm up the engine quickly. Do not use
the engine's full performance until it has
reached operating temperature.
Only shift the automatic transmission to
the desired drive position when the vehicle
is stationary.
Where possible, avoid spinning the drive
wheels when pulling away on slippery
roads. You could otherwise damage the
drive train.
! AMG vehicles: at low engine oil
temperatures below 68 ‡ (+20 †), the
maximum engine speed is restricted in
order to protect the engine. To protect the
engine and maintain smooth engine operation, avoid driving at full throttle when
the engine is cold. Key positions
SmartKey 005A
To remove the SmartKey
0047 Power supply for some consumers, such
as the windshield wipers
0048 Ignition (power supply for all consumers)
and drive position
0049 To start the engine
i The SmartKey can be turned in the
ignition lock even if it is not the correct
SmartKey for the vehicle. The ignition is not
switched on. The engine cannot be started.
KEYLESS-GO General notes
Vehicles with KEYLESS-GO are equipped with
a SmartKey featuring an integrated KEYLESS-
GO start function and a detachable Start/
Stop button.
You can switch the engine on and off with the
Start/Stop button. The Start/Stop button
must be inserted in the ignition lock and the
SmartKey must be in the vehicle.
Pressing the Start/Stop button several times
in succession corresponds to the different
SmartKey positions in the ignition lock. This
is only the case if you are not depressing the
brake pedal. Driving
155Driving and parking Z

If you depress the brake pedal and press the
Start/Stop button, the engine starts
immediately.
The Start/Stop button can be removed from
the ignition lock. Then, you can insert the
SmartKey into the ignition lock.
i You do not have to remove the Start/Stop
button from the ignition lock when you
leave the vehicle. You should, however,
always take the SmartKey with you when
leaving the vehicle. As long as the
SmartKey is in the vehicle:
R the vehicle can be started using the
Start/Stop button and
R electrically powered equipment can be
operated.
i The engine can be turned off while the
vehicle is in motion by pressing and holding
the Start/Stop button for approximately
three seconds. This function operates
independently of the ECO start/stop
automatic engine switch-off function.
Key positions with KEYLESS-GO 0043
Start/Stop button
0044 Ignition lock
X Insert Start/Stop button 0043into ignition
lock 0044.
i When you insert Start/Stop button 0043
into ignition lock 0044, the system needs
approximately two seconds recognition
time. You can then use Start/Stop
button 0043. Start/Stop button
0087
USA only
0085 Canada only
If Start/Stop button 0043has not yet been
pressed, this corresponds to the SmartKey
being removed from the ignition.
X To switch on the power supply: press
Start/Stop button 0043once.
The power supply is switched on. You can
now activate the windshield wipers, for
example.
i The power supply is switched off if you
press Start/Stop button 0043twice when in
this position and the driver's door is open.
X To switch on the ignition: press Start/
Stop button 0043twice.
The ignition is switched on.
i The power supply is switched off if you
press Start/Stop button 0043twice when in
this position and the driver's door is open.
As soon as the ignition is switched on, all the
indicator lamps in the instrument cluster light
up. If an indicator lamp does not go out after
starting the engine or lights up while driving,
there may be a technical problem
(Y page 275). 156
DrivingDriving and parking

Removing the Start/Stop button
You can remove the Start/Stop button from
the ignition lock and start the vehicle as
normal using the SmartKey.
X Remove Start/Stop button 0043from ignition
lock 0044.
i You do not have to remove the Start/Stop
button from the ignition lock when you
leave the vehicle. Starting the engine
Important safety notes G
WARNING
If children are left unsupervised in the vehicle,
they could:
R open the doors, thus endangering other
people or road users.
R get out and disrupt traffic.
R operate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
R release the parking brake.
R shifting the automatic transmission out of
park position P
R Start the engine.
There is a risk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children. G
WARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Inhaling
these exhaust gases leads to poisoning. There
is a risk of fatal injury. Therefore never leave
the engine running in enclosed spaces
without sufficient ventilation. G
WARNING
Flammable materials introduced through
environmental influence or by animals can
ignite if in contact with the exhaust system or
parts of the engine that heat up. There is a risk
of fire.
Carry out regular checks to make sure that
there are no flammable foreign materials in
the engine compartment or in the exhaust
system.
! Do not depress the accelerator pedal
when starting the engine.
i The catalytic converter is preheated for
up to 30 seconds after a cold start. During
this time, the engine sound may be
different.
Starting procedure with the SmartKey X
Depress the brake pedal and keep it
depressed.
X Shift the transmission to position P.
The transmission position display in the
multifunction display shows P.
i You can also start the engine when the
transmission is in position N.
X Turn the SmartKey to position 3in the
ignition lock (Y page 155) and release it as
soon as the engine is running.
Using KEYLESS-GO to start the engine i
The Start/Stop button can be used to
start the vehicle without inserting the
SmartKey into the ignition lock. The Start/
Stop button must be inserted in the ignition Driving
157Driving and parking Z

lock and the SmartKey must be in the
vehicle.
X Depress the brake pedal and keep it
depressed.
X Shift the transmission to position P.
The transmission position display in the
multifunction display shows P.
i You can also start the engine when the
transmission is in position N.
X Press the Start/Stop button once
(Y page 155).
The engine starts. Pulling away
Automatic transmission G
WARNING
If the engine speed is above the idling speed
and you engage transmission position Dor
R, the vehicle could pull away suddenly. There
is a risk of an accident.
When engaging transmission position Dor R,
always firmly depress the brake pedal and do
not simultaneously accelerate.
i It is only possible to shift the transmission
from position Pto the desired position if
you depress the brake pedal. Only then is
the shift lock released.
X Depress the brake pedal and keep it
depressed.
X Shift the transmission to position Dor R.
X Release the electric parking brake
(Y page 176).
X Release the brake pedal.
X Carefully depress the accelerator pedal.
! If a warning tone sounds and the
Release Park. Brake Release Park. Brake message appears
in the multifunction display, the parking
brake is still applied. Release the parking
brake. i
The vehicle locks centrally once you have
pulled away. The locking knobs in the doors
drop down.
You can open the doors from the inside at
any time.
You can also deactivate the automatic
locking feature (Y page 239).
i Upshifts take place at higher engine
speeds after a cold start. This helps the
catalytic converter to reach its operating
temperature more quickly.
Hill start assist Hill start assist helps you when pulling away
forwards or in reverse on an uphill gradient.
It holds the vehicle for a short time after you
have removed your foot from the brake pedal.
This gives you enough time to move your foot
from the brake pedal to the accelerator pedal
and to depress it before the vehicle begins to
roll.
G
WARNING
After a short time, hill start assist will no
longer brake your vehicle and it could roll
away. There is a risk of an accident and injury.
Therefore, quickly move your foot from the
brake pedal to the accelerator pedal. Never
leave the vehicle when it is held by hill start
assist.
X Remove your foot from the brake pedal.
The vehicle is then held for about a second.
X Pull away.
Hill start assist is not active if:
R you are pulling away on a level road or on
a downhill gradient.
R the transmission is in position N.
R the parking brake is applied.
R ESP ®
is malfunctioning. 158
DrivingDriving and parking