key MERCEDES-BENZ C-CLASS CABRIOLET 2016 Repair Manual

Transmission positions
B Park position
This secures the vehicle against roll-
ing away when stopped.
Only shift the transmission to posi-
tion
Pwhen the vehicle is stationary
(Y page 145). The parking lock
should not be used as a brake when
parking. In order to secure the vehi-
cle, always apply the electric parking brake in addition to the parking lock.
Park position Pis automatically
engaged if:
R you switch off the engine using the
key and remove the key
R you switch off the engine using the
key or using the Start/Stop button
and open the driver's door or front- passenger door
R you open the driver's door when
the vehicle is stationary or when
driving at a very low speed and the
transmission is in position Dor R
In the event of a malfunction of the
vehicle's electronics, the transmis-
sion may lock in position P. Have the
vehicle electronics checked immedi-
ately at a qualified specialist work-
shop. C Reverse gear
You can shift the transmission to
position
Ronly when the vehicle is
stationary (Y page 145). A Neutral
Do not shift the transmission to
N
while driving. Otherwise, the auto-
matic transmission could be dam-
aged.
No power is transmitted from the
engine to the drive wheels.
Releasing the brake pedal will allow
you to move the vehicle freely, e.g. to push it or tow it.
If ESP ®
is deactivated or faulty: shift
the transmission to position Nif the
vehicle is in danger of skidding, e.g.
on icy roads.
If you switch the engine off with the
transmission in position Ror D, the
automatic transmission shifts to N
automatically.
! Rolling in neutral
Ncan lead to
damage to the transmission. 7 Drive
The automatic transmission changes
gear automatically. All forward gears
are available. Driving tips
Changing gear The automatic transmission shifts to the indi-
vidual gears automatically when it is in trans-
mission position
D. Gearshifting is determined
by:
R the selected drive program
R the position of the accelerator pedal
R the road speed
Accelerator pedal position Your driving style influences how the automatic
transmission shifts gear:
R little throttle: early upshifts
R more throttle: late upshifts
Double-clutch function When shifting down, the double-clutch function
is active regardless of the drive program. The
double-clutch function reduces load change Automatic transmission
147Driving and parking Z

Problems with the transmission
Problem
Possible causes/consequences and
M
MSolutions The transmission has
problems shifting gear. The transmission is losing oil.
X Have the transmission checked at a qualified specialist workshop
immediately. The acceleration charac-
teristics are deteriorat-
ing.
The transmission no lon-
ger changes gear. The transmission is in emergency mode.
It is possible to shift only into
secondgear and reverse gear.
X Stop.
X Shift the transmission to position P.
X Switch off the engine.
X Wait at least ten seconds before restarting the engine.
X Shift the transmission to position Dor R.
If D is selected, the transmission shifts into secondgear; ifRis
selected, the transmission shifts into reverse gear.
X Have the transmission checked at a qualified specialist workshop
immediately. Transfer case
This section only applies to vehicles with all-
wheel drive (4MATIC). The front and rear axles
are constantly driven.
! Performance tests may only be carried out
on a two-axle roller dynamometer. Otherwise,
the braking system or the transfer case could be damaged. Contact a qualified specialist
workshop for more information on perform-
ance tests.
! Since ESP ®
engages automatically, the igni-
tion must be switched off (the key or Start/
Stop button must be in position 0or 1) if:
R the electric parking brake is being tested
using a brake dynamometer.
R the vehicle is being towed with only one
axle raised (not permitted for vehicles with
4MATIC).
The brake system could otherwise be dam-
aged.
! Vehicles with 4MATIC must not be towed
with the front or rear axle raised; otherwise,
the transmission may be damaged. Refuelling
Important safety notes
G
WARNING
Fuel is highly flammable. If you handle fuel
incorrectly, there is a risk of fire and explo-
sion.
You must avoid fire, naked flames, creating
sparks and smoking. Switch off the engine
and, if applicable, the auxiliary heating before refuelling. G
WARNING
Fuels are poisonous and hazardous to health. There is a danger of injury.
Do not swallow fuel or let it come into contact
with skin, eyes or clothing. Do not inhale fuel
vapours. Keep fuels out of the reach of chil-
dren. Refuelling
153Driving and parking
Z

To open the fuel filler flap
:
To open the fuel filler flap
; To insert the fuel filler cap
= Tyre pressure table
? Instruction label on the fuel type to be refu-
elled
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
Press the fuel filler flap in the direction of
arrow :.
The fuel filler flap swings open.
X Turn the fuel filler cap anti-clockwise and
remove it.
X Insert the fuel filler cap into the holder on the
inside of fuel filler flap ;.
X Completely insert the filler neck of the fuel
pump nozzle into the tank, hook in place and
refuel.
X Only fill the tank until the pump nozzle
switches off.
Do not add any more fuel after the pump stops
filling for the first time. Otherwise, fuel may leak out.
Vehicles with a diesel engine: the filler neck is
designed for refuelling at diesel filling pumps.
Closing the fuel filler flap X
Replace the cap on the filler neck and turn
clockwise until it engages audibly.
X Close the fuel filler flap.
Close the fuel filler flap before locking the vehi-
cle. Refuelling
155Driving and parking Z

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

X
Turn disposable hose :on the opening of
AdBlue ®
refill canister ;anti-clockwise and
remove it.
X Reseal AdBlue ®
refill canister ;with the cap.
AdBlue ®
refill canisters are available at many
filling stations or at a qualified specialist work-
shop. AdBlue ®
refill canisters are often sold with
a filler hose. A filler hose that does not exactly fit
the vehicle's AdBlue ®
tank offers no overfill pro-
tection. AdBlue ®
may leak out as a result of
overfilling. Mercedes-Benz offers a special dis-
posable hose with overfill protection. You can
obtain this from any Mercedes-Benz Service
Centre. AdBlue ®
is available in a variety of con-
tainers and receptacles. Use the disposable
hose only with the Mercedes-Benz AdBlue ®
refill
canisters.
AdBlue ®
refill bottle !
Only screw on the AdBlue ®
refill bottle so
that it is hand-tight. Otherwise, the thread of
the AdBlue ®
refill bottle could be damaged
and AdBlue ®
could leak out. X
Unscrew the protective cap from AdBlue ®
refill bottle :.
X Place AdBlue ®
refill bottle :on the filler
neck as shown and screw it on clockwise until hand-tight.
X Press AdBlue ®
refill bottle :towards the
filler neck.
The AdBlue ®
tank is filled. This could take up
to one minute.
When AdBlue ®
refill bottle :is no longer
pressed, filling stops and the bottle may be
removed again after being only partially emp- tied.
X Release AdBlue ®
refill bottle :. X
Turn AdBlue ®
refill bottle :anti-clockwise
and remove it.
X Screw the protective cap onto AdBlue ®
refill
bottle :again.
AdBlue ®
refill bottles are available at many fill-
ing stations or at a qualified specialist work-
shop. Refill bottles without a threaded seal offer
no overfill protection. AdBlue ®
may leak out as a
result of overfilling. Mercedes-Benz offers spe-
cial refill bottles with a threaded cap. These are
available at any Mercedes-Benz Service Centre. Parking
Important safety notes
G
WARNING
Flammable material such as leaves, grass or
twigs may ignite if they come into contact with hot parts of the exhaust system or exhaust
gas flow. There is a risk of fire.
Park the vehicle so that no flammable mate-
rial can come into contact with hot vehicle
components. In particular, do not park on dry grassland or harvested grain fields. G
WARNING
If you leave children unattended in the vehi-
cle, they may be able to set the vehicle in
motion if, for example, they:
R release the parking brake
R shift the automatic transmission out of park
position Por shift manual transmission into
neutral
R start the engine
In addition, they may operate vehicle equip-
ment and become trapped. There is a risk of
an accident and injury.
When leaving the vehicle, always take the key with you and lock the vehicle. Never leave
children unattended in the vehicle.
! Always secure the vehicle correctly against
rolling away. Otherwise, the vehicle or its driv-
etrain could be damaged. Parking
159Driving and parking Z

To ensure that the vehicle is secured against
rolling away unintentionally:
R the electric parking brake must be applied
R on vehicles with manual transmission, engage
first gear or reverse gear
R on vehicles with automatic transmission, the
transmission must be in position Pand the
key must be removed from the ignition lock
R the front wheels must be turned towards the
kerb on steep uphill or downhill gradients
R the empty vehicle must be secured at the
front axle with a wheel chock or similar
object, for example, on uphill or downhill gra-
dients
R on uphill or downhill gradients the laden vehi-
cle must also be secured at the rear axle, for
example with a wheel chock or similar object Switching off the engine
Important safety notes G
WARNING
The automatic transmission switches to neu-
tral position Nwhen you switch off the engine.
The vehicle may roll away. There is a risk of an
accident.
After switching off the engine, always switch
to parking position P. Prevent the parked vehi-
cle from rolling away by applying the parking
brake.
Vehicles with manual transmission X
Shift to either 1st gear or reverse gear R.
X Turn the key to position 0in the ignition lock
and remove it.
The immobiliser is activated.
X Apply the electric parking brake.
Vehicles with automatic transmission X
Apply the electric parking brake.
X Shift the transmission to position P.X
With the key: turn the key to position 0in the
ignition lock and remove it.
The immobiliser is activated.
X With the Start/Stop button: press the
Start/Stop button (Y page 133).
The engine stops and all the indicator lamps in the instrument cluster go out.
When the driver's door is closed, this corre-
sponds to key position 1. When the driver's
door is open, this corresponds to key position
0: "key removed".
If you switch the engine off with the transmis-
sion in position Ror D, the automatic transmis-
sion shifts to Nautomatically.
With the key: if you then open the driver's door
or the front-passenger door or remove the key
from the ignition, the automatic transmission
shifts to Pautomatically.
With the Start/Stop button: if you then open
the driver's door or the front-passenger door,
the automatic transmission shifts to Pautomat-
ically.
If you want the automatic transmission to
remain in neutral N, e.g. when having the vehicle
cleaned in an automatic car wash with a towing
system:
X Vehicles with KEYLESS-GO or KEYLESS-
GO start function:
remove the Start/Stop
button from the ignition lock.
X Insert the key into the ignition lock.
X All vehicles: switch the ignition on.
X Depress the brake pedal and keep it
depressed.
X Shift to neutral N.
X Release the brake pedal.
X Release the electric parking brake.
X Switch off the ignition and leave the key in the
ignition lock.
The engine can be switched off while the vehicle is in motion by pressing and holding the Start/
Stop button for about three seconds. This func- tion operates independently of the ECO start/
stop automatic engine switch-off function. 160
ParkingDriving and parking

Electric parking brake
General notes G
WARNING
If you leave children unattended in the vehi-
cle, they may be able to set the vehicle in
motion if, for example, they:
R release the parking brake
R shift the automatic transmission out of park
position Por shift manual transmission into
neutral
R start the engine
In addition, they may operate vehicle equip-
ment and become trapped. There is a risk of
an accident and injury.
When leaving the vehicle, always take the key with you and lock the vehicle. Never leave
children unattended in the vehicle.
The function of the electric parking brake is
dependent on the on-board voltage. If the on-
board voltage is low or the system is malfunc-
tioning, it may not be possible to apply the
released parking brake. X If this is the case, park the vehicle only on
level ground and secure it to prevent it from
rolling away.
X Vehicles with automatic transmission:
shift the automatic transmission to position
P.
X Vehicles with manual transmission:
engage first gear.
It may not be possible to release an applied
parking brake if the on-board voltage is low or if
there is a malfunction in the system. Contact a
qualified specialist workshop.
The electric parking brake carries out a function check at regular intervals when the engine is
switched off. Noises that occur are normal. Applying or releasing manually X
To apply: push handle :.
When the electric parking brake is applied,
red indicator lamp !lights up on the
instrument cluster.
The electric parking brake can also be applied when the key is removed.
X To release: pull handle:.
Red indicator lamp !on the instrument
cluster goes out.
The electric parking brake can be released only:
R when the key is in position 1or 2in the igni-
tion lock (Y page 133) or
R if the ignition was switched on using the
Start/Stop button
Applying automatically (vehicles with
automatic transmission) The electric parking brake is automatically
applied when the transmission is in position P
and:
R the engine is switched off or
R the driver is not wearing a seat belt and the
driver's door is opened
To prevent the electric parking brake from being
applied automatically, pull handle :.
The electric parking brake is also applied auto-
matically if:
R DISTRONIC PLUS brings the vehicle to a
standstill or
R the HOLD function is keeping the vehicle sta-
tionary or
R Active Parking Assist is keeping the vehicle
stationary Parking
161Driving and parking Z

80 km/h. Select the "Normal" setting for normal
road surfaces and "Raised" for driving with snow chains or on particularly poor road surfaces.
Your selection remains stored even if you
remove the key from the ignition lock.
X Start the engine.
If indicator lamp ;is not lit:
X Press button :.
Indicator lamp ;lights up. The vehicle is
raised by 25 mm compared with the normal
level.
The Vehicle rising Vehicle rising message appears on
the multifunction display.
i The message disappears after ten seconds,
irrespective of the level reached. If necessary,
the vehicle is raised further.
The "Raised level" setting is cancelled if you:
R drive at speeds above 120 km/h
R drive for approximately three minutes at a
speed above 80 km/h
The "Raised level" remains saved when you are
not driving within these speed ranges.
Setting the normal vehicle levelX Start the engine.
If indicator lamp ;is lit:
X Press button :.
Vehicles with automatic transmission:
indicator lamp ;goes out. The vehicle is
adjusted to the height of the currently selec-
ted drive program (Y page 141).
Vehicles with manual transmission: indi-
cator lamp ;goes out. The vehicle is adjus-
ted to the height of the currently selected
drive program (Y page 141).
Suspension settings General notes
The Adaptive Damping System automatically
controls the calibration of the dampers.
The damping is adjusted individually to each
wheel and depends on:
R your driving style, e.g. sporty
R the road surface condition, e.g. bumps
R your individual selection, i.e. sport or comfort
Your selection remains stored even if you
remove the key from the ignition lock. Sport mode
In the Sand S+drive programs, the firmer sus-
pension settings ensure even better contact
with the road. Select this mode when employing
a sporty driving style, e.g. on winding country
roads.
X Vehicles with automatic transmission:
select the
Sor S+ drive program with the
DYNAMIC SELECT switch (Y page 141).
Vehicles with manual transmission: select
the Sor S+ drive program with the DYNAMIC
SELECT switch (Y page 141).
The vehicle is lowered by 15 mm compared
with the normal level.
Comfort mode In the Eand Cdrive programs, the driving char-
acteristics of your vehicle are more comforta-
ble. Therefore, select this mode if you prefer a
more comfortable driving style. Select Comfort
mode also when driving at speed on straight
roads, e.g. on straight stretches of motorway.
X Vehicles with automatic transmission:
select the
Eor Cdrive program with the
DYNAMIC SELECT switch (Y page 141).
Vehicles with manual transmission: select
the Eor Cdrive program with the DYNAMIC
SELECT switch (Y page 141).
The vehicle is raised to the normal level.
At speeds of above 125 km/h, the vehicle is
automatically lowered by 15 mm in the Eand C
drive programs. At speeds of below 80 km/h,
the vehicle is raised again. AMG RIDE CONTROL
General notes The electronically controlled damping system
works continuously. This improves driving
safety and ride comfort.
The damping is adjusted individually to each
wheel and depends on:
R your driving style, e.g. sporty
R the road surface condition, e.g. bumps
R your individual selection of Sport, Sport + or
Comfort
The suspension mode is adjusted using the cor-
responding button in the centre console. Driving systems
183Driving and parking Z

Automatic transmission:
Transmission posi-
tion Warning display
D
Front area activated
R,
Nor the vehicle is
rolling backwards Rear and front areas
activated
P
No areas activated
One or more segments light up as the vehicle
approaches an obstacle, depending on the vehi-
cle's distance from the obstacle.
From the:
R sixth segment onwards, you will hear an inter-
mittent warning tone for approximately two
seconds.
R seventh segment onwards, you will hear a
warning tone for approximately two seconds.
This indicates that you have now reached the minimum distance. Deactivating/activating PARKTRONIC d
Switch on the dashboard
e Switch in the centre console
: Deactivating/activating PARKTRONIC
; Indicator lamp
If indicator lamp ;lights up, PARKTRONIC is
deactivated. Active Parking Assist is then also
deactivated.
i PARKTRONIC is automatically activated
when you turn the key to position 2in the
ignition lock. Driving systems
187Driving and parking Z

fied specialist workshop. Blind Spot Assist may
no longer work properly in such cases.
Monitoring range In particular, the detection of obstacles can be
impaired in the case of:
R dirt on the sensors or obscured sensors
R poor visibility, e.g. due to fog, heavy rain,
snow or spray
R narrow vehicles, e.g. motorcycles or bicycles
R very wide lanes
R narrow lanes
R vehicles not driving in the middle of their lane
R crash barriers or other road boundaries
Vehicles in the monitoring range are then not
indicated. At a distance of around 0.5 m
;from the vehi-
cle, Blind Spot Assist monitors the area up to
3.0 mnext to =and behind :your vehicle, as
shown in the picture.
If the lanes are narrow, vehicles driving in the
lane beyond the lane next to your vehicle may be
indicated, especially if the vehicles are not driv-
ing in the middle of their lane. This may be the
case if the vehicles are driving on the inner side of their lane.
Due to the nature of the system:
R warnings may be issued in error when driving
close to crash barriers or similar solid boun-
daries
R warnings may be interrupted when driving
alongside long vehicles, e.g. lorries, for a pro-
longed time Warning lamp
:
Warning lamp
Blind Spot Assist is not active at speeds below
approximately 30 km/h. Vehicles in the moni-
toring range are then not indicated.
If a vehicle is detected within the blind spot
monitoring range at speeds above approx-
imately 30 km/h, warning lamp :on the cor-
responding side lights up red. This warning lamp always lights up when a vehicle enters the blindspot monitoring range from behind or from the
side. When you overtake a vehicle, the warning
occurs only if the difference in speed is less than
12 km/h.
If you select reverse gear, Blind Spot Assist is
not operational.
The brightness of the warning lamps is auto-
matically adapted to the brightness of the sur-
roundings.
Collision warning
If a vehicle is detected in the blind spot moni-
toring range and you switch on the correspond-
ing turn signal, a double warning tone sounds.
The red warning lamp flashes on the relevant
exterior mirror. If the turn signal remains on,
detected vehicles are indicated by the flashing
of the red warning lamp on the exterior mirror.
There are no further warning tones.
Activating Blind Spot Assist
X Make sure that Blind Spot Assist is activated
in the on-board computer (Y page 233).
X Turn the key to position 2in the ignition lock.
The red warning lamps on the exterior mirrors
light up until the engine is started. Driving systems
205Driving and parking Z