battery MERCEDES-BENZ C-CLASS CABRIOLET 2016 User Guide

AIRSCARF
Switching on/off 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. 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 dis-
play the heating level you have selected.
X Make sure that the key is in position 1or2in
the ignition lock.
X To switch on: press button:.
Three red indicator lamps in the button light
up. The blower starts up after a seven second
preheating phase.
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.
Adjust the height of the current of air according
to your height by adjusting the height of the
head restraint.
Make sure that there are no objects covering the intake grille on the back of the driver's seat headrestraint.
i The blower runs for a further seven seconds
to cool down the heating elements.
i If the vehicle battery voltage is too low, AIR-
SCARF 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
Children could become trapped by the steer-
ing wheel if they adjust it. There is a risk of
injury.
When leaving the vehicle, always take the key with you and lock the vehicle. Never leave
children unattended in the vehicle.
The electrically adjustable steering wheel can
still be adjusted when there is no key in the igni-
tion lock. Adjusting the steering wheel man-
ually
:
Release lever
; To adjust the steering wheel height
= To adjust the steering wheel position (fore-
and-aft adjustment) Steering wheel
107Seats, steering wheel and mirrors Z

Adjusting the exterior mirrors
X
Turn the key to position 1or 2in the ignition
lock (Y page 133).
X Exterior mirror on the front-passenger side:
press button ;.
Exterior mirror on the driver's side: press but-
ton =.
The indicator lamp lights up in the button that has been pressed.
The indicator lamp goes out again after some
time. You can adjust the selected exterior
mirror using button :as long as the indicator
lamp is lit.
X Press button :up, down, left or right until
you have adjusted the exterior mirror to the
correct position. You should have a good
overview of traffic conditions.
The convex exterior mirrors provide a larger field of vision.
After the engine has been started, the exterior
mirrors are automatically heated if the rear win-
dow heating is switched on and the outside tem- perature is low.
Folding the exterior mirrors in/out elec- trically X
Turn the key to position 1or 2in the ignition
lock (Y page 133).
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. Other-
wise, they could vibrate.
i If you are driving at speeds of more than
47 km/h, you can no longer fold in the exte-
rior mirrors.
Resetting 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 if you have activated the Automatic
Automatic
mirror-folding function mirror-folding function in the multimedia
system.
X Turn the key to position 1or 2in the ignition
lock (Y page 133).
X Briefly press button :.
Folding the exterior mirrors in/out
automatically When the
Automatic Automatic mirror-folding
mirror-folding func‐
func‐
tion
tion is activated via the multimedia system (see
Digital Owner's Manual):
R the exterior mirrors fold in automatically as
soon as you lock the vehicle from the outside
R the exterior mirrors fold out again automati-
cally as soon as you unlock the vehicle
i If the exterior mirrors have been folded in
manually, they do not fold out.
Exterior mirror pushed out of position If an exterior mirror has been pushed out of
position (forwards or backwards), proceed as
follows:
X Vehicles without electrically folding exte-
rior mirrors: move the exterior mirror into
the correct position manually.
X Vehicles with electrically folding exterior
mirrors: press and hold button :until you
hear a click and then the mirror engaging in
position (Y page 110).
The mirror housing is engaged again and you can adjust the exterior mirrors as usual
(Y page 110). 110
MirrorsSeats
, steering wheel and mirrors

The light setting is automatically selected
according to the brightness of the ambient light,
but not in the event of poor visibility due to
weather conditions such as fog, snow or spray.
R With the key in position 1in the ignition lock,
the side lamps are switched on or off auto-
matically depending on the brightness of the
ambient light.
R The daytime driving lights or the side lamps
and dipped-beam headlamps are switched on or off automatically while the engine is run-
ning depending on the ambient light condi-
tions.
X To switch on the automatic headlamps:
turn the light switch to the
Ãposition.
The daytime driving lights improve the visibility
of your vehicle during the day.
When the side lamps and dipped-beam head-
lamps are switched on, the green Tside
lamps and Ldipped-beam headlamps indi-
cator lamps on the instrument cluster light up.
Dipped-beam headlamps G
WARNING
When the light switch is set to Ã, the
dipped-beam headlamps may not be switched on automatically if there is fog, snow or othercauses of poor visibility due to the weather
conditions such as spray. There is a risk of an
accident.
In such situations, turn the light switch to
L.
When the ignition is switched on and the light
switch is in the Lposition, the side lamps
and dipped-beam headlamps are switched on
even if the light sensor does not sense dark
ambient light conditions. This is advantageous
when there is fog or rain.
X To switch on the dipped-beam headlamps:
turn the key in the ignition lock to position 2
or start the engine.
X Turn the light switch to the Lposition.
The green Lindicator lamp on the instru-
ment cluster lights up.
Rear fog lamp The rear fog lamp improves the visibility of your
vehicle for the traffic behind in the event of
heavy fog. You must observe the legal require- ments for the country in which you are currently
driving when operating the rear fog lamp.
X To switch on the rear fog lamp: turn the key
in the ignition lock to position 2or start the
engine.
X Turn the light switch to the LorÃ
position.
X Press the Rbutton.
The yellow Rindicator lamp on the instru-
ment cluster lights up.
Side lamps
! When the battery is discharged heavily, the
side lamps or parking lamps are automatically
switched off to facilitate an engine start.
Always park your vehicle safely and in a well lit area, in accordance with the relevant legal
stipulations. Avoid using the Tside lamps
for periods lasting several hours. Where pos-
sible, switch on the right Xor left W
parking lamp.
X To switch on the side lamp: turn the light
switch to the Tposition.
The green Tindicator lamp on the instru-
ment cluster lights up.
Parking lamps Switching on the parking lamps ensures that the
corresponding side of the vehicle is illuminated.
X To switch on the parking lamp: turn the key
to position 0in the ignition lock or remove the
key.
X Turn the light switch to the W(left-hand
side of the vehicle) or X(right-hand side of
the vehicle) position. Exterior lighting
115Lights and windscreen wipers Z

Interior lighting
Overview of interior lighting
Front overhead control panel :
p Left-hand front reading lamp
; c Front interior lighting
= | Automatic interior lighting control
? p Right-hand front reading lamp 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.
The colour and brightness of the ambient light-
ing are set using the multimedia system (see
Digital Owner's Manual).
Automatic interior lighting control X
To switch on or off: press the|button.
When the automatic interior lighting control is
switched on, the button is flush with the over- head control panel.
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 ignition lock. This delayed switch-off can be adjusted via the
multimedia system (see Digital Owner's Man-
ual). Replacing bulbs
Important safety notes
G
WARNING
Bulbs, lamps and plug connectors can
become very hot during use. When replacing a bulb, you could burn yourself on these com-
ponents. There is a risk of injury.
Allow these components to cool down before replacing the bulb.
Do not use a bulb if it has been dropped or if its
glass tube has been scratched.
The bulb may explode if:
R you touch it
R it is hot
R you drop it
R you scratch it
Use bulbs only in closed lamps that have been
designed for this purpose. Fit only spare bulbs of the same type and the specified voltage.
Marks on the glass tube reduce the service life
of the bulbs. Do not touch the glass tube with
your bare hands. If necessary, clean the glass
tube when cold with alcohol or spirit and rub it
off with a lint-free cloth.
Protect bulbs from moisture during operation.
Do not allow bulbs to come into contact with
liquids.
Replace only the bulbs listed (Y page 120).
Have the bulbs that you cannot change yourself
replaced at a qualified specialist workshop.
If you require assistance replacing bulbs, con-
sult a qualified specialist workshop.
If the new bulb still does not light up, consult a
qualified specialist workshop.
Headlamps and lights are an important aspect of
vehicle safety. You must therefore make sure
that these function correctly at all times. Have
the headlamp setting checked regularly.
Vehicles with LED headlamps: the front and
rear lamp clusters of your vehicle are equipped
with LED bulbs. Do not replace the bulbs your-
self. Contact a qualified specialist workshop
with the necessary specialist knowledge and
tools to carry out the work required. Replacing bulbs
119Lights and windscreen wipers Z

The climate control system switches to the
following functions:
R high airflow
R high temperature
R air distribution to the windscreen and front
side windows
R air-recirculation mode off
i If necessary, the "Cooling with dehumidifi-
cation" function is activated. In this case, the
indicator lamp above rocker switch
¿ remains switched off.
X To switch off: press rocker switch ¬up or
down.
The indicator lamp above rocker switch ¬
goes out. The previous settings are reactiva-
ted. Air-recirculation mode remains deactiva- ted. Demisting the windows
Windows misted up on the inside X
Activate the "Cooling with air dehumidifica-
tion" function with the ¿rocker switch.
X Switch on automatic mode using the Ã
rocker switch.
X If the windows continue to mist up, activate
the "Windscreen demisting" function using
the ¬ rocker switch. i
You should select this setting only until the
windscreen is clear again.
Windows misted up on the outside X
Switch on the windscreen wipers.
X Switch on automatic mode using the Ã
rocker switch.
i If you clean the windows regularly, they do
not mist up as quickly. 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 window heating may switch off.
Switching the sound on/off X
Turn the key to position 2in the ignition lock
(Y page 133).
X Press the ¤rocker switch up or down.
The indicator lamp above the ¤rocker
switch lights up or goes out.
Problems with the rear window heating Problem
Possible causes/consequences and
M MSolutions The rear window heating
has switched off prema-
turely or cannot be acti-
vated. The battery has not been sufficiently charged.
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 heating
can be activated again. Activating/deactivating air-recircula-
tion mode
General notes You can also temporarily deactivate the flow of
fresh air manually if unpleasant odours are
entering the vehicle from outside. The air already inside the vehicle will then be recircula-
ted.
If you activate air-recirculation mode, the win-
dows can mist up more quickly, particularly at
low outside temperatures. Use air-recirculation
mode only briefly to prevent the windows from
misting up. Operating the climate control system
129Climate control

ECO start/stop function
Introduction The ECO start/stop function switches the
engine off automatically if the vehicle is stopped
under certain conditions.
When the vehicle pulls away again, the engine
starts automatically. The ECO start/stop func-
tion thereby helps you to reduce the fuel con-
sumption and emissions of your vehicle.
Important safety notes G
WARNING
If the engine is switched off automatically and you exit the vehicle, the engine is restarted
automatically. The vehicle may begin moving. There is a risk of accident and injury.
If you wish to exit the vehicle, always turn off
the ignition and secure the vehicle against
rolling away.
General notes :
ECO start/stop display
Excluding Mercedes-AMG vehicles: the ECO
start/stop function is switched on whenever
you start the engine using the key or the Start/ Stop button.
If the è ECO symbol is shown on the multi-
function display, the ECO start/stop function
switches the engine off automatically if the vehi-
cle stops moving.
If the ECO start/stop function has been
switched off manually (Y page 139) or as the
result of a malfunction, the èorç ECO
symbol is not displayed.
Mercedes-AMG vehicles: the ECO start/stop
function is available only in drive program C.
Mercedes-AMG C 43 4MATIC: the ECO start/
stop function is available only in drive programs
C and E. Mercedes-AMG vehicles:
the ECO start/stop
function is switched on whenever you restart
the engine using the key or the Start/Stop but- ton. This is the case if:
R the ignition was switched off for more than
four hours or
R the ECO start/stop function had been
switched on before the engine was switched
off
Automatic engine switch-off General notes
If the vehicle is braked to a standstill with the
transmission in hori, the ECO start/stop
function switches off the engine automatically.
The HOLD function can be activated if the
engine has been switched off automatically. It is then not necessary to continue applying the
brakes during the automatic stop phase. When
you depress the accelerator pedal, the engine
starts automatically and the braking effect of
the HOLD function is deactivated.
The ECO start/stop function is operational and
the è ECO symbol is shown on the multi-
function display if:
R the indicator lamp in the ECO button is lit
green
R the outside temperature and the atmospheric
air pressure are within a range that is suitable for the system
R the engine is at normal operating temperature
R the set temperature for the vehicle interior
has been reached
R the battery is sufficiently charged
R the system does not detect moisture on the
windscreen 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 all conditions for automatic engine switch-off
are not fulfilled, the çECO symbol is shown.
All the vehicle's systems remain active when the engine is switched off automatically.
Mercedes-AMG C 63 and Mercedes-AMG
C 63 S: the number of consecutive automatic
engine stops is unlimited.
All other models: the engine can be switched
off automatically a maximum of four times (ini-
tial stop, then three subsequent stops) in suc- Driving
137Driving and parking Z

cession. The
çECO symbol is shown on the
multifunction display after the engine has been
started automatically for the fourth time. When
the è ECO symbol is shown on the multi-
function display, automatic engine switch-off is
possible again.
Vehicles with manual transmission The ECO start/stop function switches off the
engine automatically at low speeds.
X Brake the vehicle.
X Engage neutral i(follow gearshift instruc-
tion :to engage neutral i, if necessary).
X Release the clutch pedal.
The engine is switched off automatically.
Vehicles with automatic transmission If the vehicle is braked to a standstill with the
transmission in hori, the ECO start/stop
function switches off the engine automatically.
The HOLD function can be activated if the
engine has been switched off automatically. It is
then not necessary to continue applying the
brakes during the automatic stop phase. When
you depress the accelerator pedal, the engine
starts automatically and the braking effect of
the HOLD function is deactivated.
Automatic engine start General notes
The engine is started automatically if:
R you switch off the ECO start/stop function by
pressing the ECO button
R you depress the accelerator pedal
R you engage reverse gear k
R you unfasten your seat belt or open the driv-
er'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
Vehicles with manual transmission
! Only engage gear when the clutch pedal is
depressed.
The engine is started automatically when you
depress the clutch pedal.
Vehicles with automatic transmission The engine is started automatically if:
R you switch off the ECO start/stop function by
pressing the ECO button
R Mercedes-AMG C 63 and Mercedes-AMG
C 63 S: you switch to drive program RACE
(S‑MODEL), S+orS
R Mercedes-AMG C 43 4MATIC: you switch to
drive program S+orS
R all other models: you switch to drive pro-
gram S+
R Mercedes-AMG vehicles: you permanently
activate manual gearshifting (Y page 150)
R in transmission position hori, the brake
pedal is released and the HOLD function is not active
R you depress the accelerator pedal
R you engage reverse gear k
R you move the transmission out of position j
R you unfasten your seat belt or open the driv-
er'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
Shifting the transmission to position jdoes
not start the engine.
If you shift the transmission from ktoh, the
ECO start/stop function is available as soon as the è ECO symbol appears on the multifunc-
tion display. 138
DrivingDriving and parking

Setting the volume:
X Press button :.
If you select the loudest setting, indicator
lamp ;lights up.
You can also adjust the position of the exhaust
flap using the: R DYNAMIC SELECT switch (Y page 141)
R Mercedes-AMG vehicles: multimedia sys-
tem Problems with the engine
Problem
Possible causes/consequences and
M MSolutions The engine does not
start. The HOLD function or DISTRONIC PLUS is activated.
X Deactivate the HOLD function (Y page 179) or DISTRONIC PLUS
(Y page 171).
X Start the engine again (Y page 134).The engine does not
start. The starter motor
can be heard. R
The engine electronics are malfunctioning.
R The fuel supply is malfunctioning.
Before attempting to restart the engine:
X Turn the key back to position uin the ignition lock.
or X Press the Start/Stop button repeatedly until all indicator lamps on
the instrument cluster go out.
X Start the engine again (Y page 134). Avoid excessively long and
frequent attempts to start the engine, as this will drain the battery.
If the engine does not start after several attempts: X Consult a qualified specialist workshop. The engine does not
start. The starter motor
can be heard. The
reserve fuel warning
lamp is lit and the fuel
gauge display is at the
reserve level. The fuel tank is empty.
X Refuel the vehicle. The engine does not
start. You cannot hear
the starter motor. The on-board voltage is too low because the battery is too weak or
discharged.
X Jump-start the vehicle (Y page 333).
If the engine does not start despite attempts to jump-start it:
X Consult a qualified specialist workshop. 140
DrivingDriving and parking

Problems with the fuel and fuel tank
Problem
Possible causes/consequences and
M
MSolutions Fuel is leaking from the
vehicle.
G
WARNING
The fuel line or the fuel tank is faulty.
There is a risk of fire or explosion. X Apply the electric parking brake.
X Switch off the engine.
X Remove the key from the ignition lock.
or, on vehicles with KEYLESS-GO start function or KEYLESS ‑GO:
X Open the driver's door.
The vehicle electronics now have status 0. This is the same as the
key having been removed.
X Do not restart the engine under any circumstances.
X Consult a qualified specialist workshop. The engine does not
start. The fuel tank of a vehicle with a diesel engine has been run completely
dry.
X Refuel the vehicle with at least 5 l of diesel.
X Turn the ignition on for approximately ten seconds (Y page 133).
X Start the engine continuously for a maximum of ten seconds until it
runs smoothly.
If the engine does not start: X Turn the ignition on again for a maximum of ten seconds
(Y page 133).
X Start the engine again continuously for a maximum of ten seconds
until it runs smoothly.
If the engine does not start after three attempts:
X Consult a qualified specialist workshop. The fuel filler flap cannot
be opened. The fuel filler flap is not unlocked.
X Unlock the vehicle (Y page 82). The key battery is weak or discharged.
X Unlock the vehicle using the emergency key element (Y page 83).The fuel filler flap is unlocked, but the opening mechanism is jammed.
X Consult a qualified specialist workshop. AdBlue
®
(BlueTEC vehicles only)
General notes To function properly, BlueTEC exhaust gas after-
treatment must be operated with the reducing
agent AdBlue ®
. On vehicles with a 8.5
lAdBlue ®
tank, topping
up AdBlue ®
is not part of the maintenance work.
Under normal operating conditions, a full tank of
AdBlue ®
should last until the next service due
date.
When the supply of AdBlue ®
is down to approx-
imately 3.0 l, the Refill AdBlue See
Refill AdBlue See 156
RefuellingDriving an
d parking

Parking up the vehicle
If you leave the vehicle parked up for longer than
four weeks, the battery may be damaged by
exhaustive discharging.
If you leave the vehicle parked up for longer than six weeks, it may suffer from lack of use.
X Contact a qualified specialist workshop and
seek advice.
i You can obtain information on trickle charg-
ers from a qualified specialist workshop. Driving tips
General driving tips
Important safety notes 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.
Drive sensibly – save fuel Observe the following tips to save fuel:
X The tyres should always be inflated to the rec-
ommended tyre pressure.
X Remove unnecessary loads.
X Remove roof racks when they are not needed.
X Warm up the engine at low engine speeds.
X Avoid frequent acceleration or braking.
X Have all maintenance work carried out as
indicated by the service intervals in the Ser-
vice Booklet or by the service interval display.
Fuel consumption also increases when driving in
cold weather, in stop-start traffic, on short jour- neys and in hilly terrain. ECO display
The ECO display shows you how economical
your driving style is. The ECO display assists you in achieving the most economical driving style
for the selected settings and prevailing condi-
tions. Consumption can be significantly influ-
enced by your driving style. :
Acceleration
; Coasting
= Constant
? Additional range achieved
Range ?is shown under Bonus Bonusfr. fr.start
start and
represents the additional range achieved since
the beginning of the journey as a result of an
adapted driving style.
If the fuel level has dropped into the reserve
range, the Reserve fuel
Reserve fuel display message is
shown instead of range ?on the multifunction
display. In addition, warning lamp 8on the
instrument cluster lights up (Y page 278). Driving tips
163Driving and parking Z