2014 MERCEDES-BENZ C-CLASS SALOON ignition

Key
Display messages
Possible causes/consequences and
M
MSolutions Â
Key does not Key does not
belong to vehicle belong to vehicle You have put the wrong key in the ignition lock.
X Use the correct key. Â
Replace key Replace key The key needs to be replaced.
X Visit a qualified specialist workshop. Â
Change key batter‐ Change key batter‐
ies ies The key batteries are discharged.
X Replace the batteries (Y page 94).Â
Key not detected Key not detected
(white display mes-
sage) The key is currently undetected.
X Change the location of the key in the vehicle.
If the key still cannot be detected: X Insert the key into the ignition lock and turn it to the desired
position. Â
Key not detected Key not detected
(red display message) The key is not in the vehicle.
A warning tone also sounds.
If the engine is switched off, you can no longer lock the vehicle
centrally or start the engine.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Secure the vehicle to prevent it from rolling away (Y page 207).
X Locate the key.
X Press aon the steering wheel to confirm the display mes-
sage. 350
Display
messagesOn-board computer and displays

Display messages
Possible causes/consequences and
M
MSolutions Because there is interference from a strong source of radio waves,
the key is not detected whilst the engine is running.
A warning tone also sounds.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Secure the vehicle to prevent it from rolling away (Y page 207).
X Operate the vehicle with the key in the ignition lock if necessary. Â
Remove starting Remove starting
button, then button, then
insert key insert key The key is continually undetected.
The key detection function has a temporary malfunction or is
faulty. A warning tone also sounds.
X Insert the key into the ignition lock and turn it to the desired
position.
X Visit a qualified specialist workshop. Warning and indicator lamps in the instrument cluster
Safety
Seat belts Warning/
indicator
lamp
N N
Signal type
Possible causes/consequences and M
MSolutions ü
N
Only for certain countries: the red seat belt warning lamp lights up for
6 seconds after the engine starts.
The seat belt warning lamp reminds the driver and front passenger to fasten
their seat belts.
X Fasten your seat belt (Y page 49).ü
N
Only for certain countries: the red seat belt warning lamp lights up after the
engine starts. In addition, a warning tone sounds for up to 6 seconds.
The driver's seat belt is not fastened.
X Fasten your seat belt (Y page 49).
The warning tone ceases. Wa
rning and indi cator lamps in the instrument cluster
351On-board computer and displays Z

Engine
Warning/
indicator
lamp
N N
Signal type
Possible causes/consequences and M
MSolutions ;
N
The yellow engine diagnostics warning lamp lights up while the engine is
running.
There may be a fault, for example:
R in the engine management
R in the fuel injection system
R in the exhaust system
R in the ignition system (for vehicles with petrol engines)
R in the fuel system
The emission limit values may be exceeded and the engine may be running in emergency mode.
X Have the vehicle checked as soon as possible at a qualified specialist work-
shop.
Vehicles with a diesel engine: the fuel tank has been run dry (Y page 203).
X Start the engine three to four times after refuelling.
If the yellow engine diagnostics warning lamp goes out, emergency running
mode is cancelled. The vehicle need not be checked. 8
N
The yellow reserve fuel warning lamp is on while the engine is running.
The fuel level has dropped into the reserve range.
Operation of the auxiliary heating is deactivated if the fuel level drops into the reserve range.
X Refuel at the nearest filling station. ?
N
The red coolant warning lamp lights up while the engine is running and the
coolant temperature gauge is at the start of the bar display.
The temperature sensor for the coolant temperature gauge is faulty.
The coolant temperature is no longer being monitored. There is a risk of engine
damage if the coolant temperature is too high.
X Stop the vehicle immediately, paying attention to road and traffic condi-
tions, and switch off the engine. Do not continue driving under any circum- stances.
X Secure the vehicle to prevent it from rolling away (Y page 207).
X Consult a qualified specialist workshop. 360
Warning and indicator lamps in the instrument clusterOn-board computer and displays

either close the side window or retract the
roller sunblind before driving at high
speeds. X
To extend: pull the roller sunblind out by
tab :and hook it onto retainers ;at the
top of the window. Rear window roller sunblind
Important safety notes G
WARNING
Parts of the body could be trapped in the
sweep of the roller sunblind when the roller
sunblind is extended or retracted. There is a
risk of injury.
When extending or retracting make sure that
no parts of the body are in the sweep of the
roller sunblind. Briefly press the button again if someone becomes trapped. The opening/
closing process is stopped.
! Make sure that the roller sunblind can
move freely. Otherwise, the roller sunblind
or other objects could be damaged. Extending/retracting the roller sun-
blind X
Turn the key to position 1or 2in the ignition
lock (Y page 181).
X To extend or retract: briefly press but-
ton :.
The roller sunblind fully extends or fully
retracts.
X To stop: briefly press button :again.
The roller sunblind stops briefly and
retracts into the out-of-use position. Ashtray
Front ashtray !
The stowage space under the ashtray is
not heat resistant. Before placing lit ciga-
rettes in the ashtray, make sure that the
ashtray is properly engaged. Otherwise, the
stowage space could be damaged. Features
379Stowing and features Z

Vehicles with manual transmission:
X
Turn the key to position 2in the ignition
lock (Y page 181).
X To open: open the stowage compartment
(Y page 369).
X Press in cigarette lighter ;.
Cigarette lighter ;will pop out automati-
cally when the heating element is red-hot.
X To close: push cover :of the stowage
compartment closed. Vehicles with automatic transmission:
X
Turn the key to position 2in the ignition
lock (Y page 181).
X To open: open the stowage compartment
(Y page 369).
X Press in cigarette lighter ;.
Cigarette lighter ;will pop out automati-
cally when the heating element is red-hot.
X To close: push cover :of the stowage
compartment closed. 12 V sockets
General notes X
Turn the key to position 1in the ignition
lock (Y page 181).
The sockets can be used for accessories with a maximum draw of 180 W(15 A). Accesso-
ries include such items as bulbs or chargers
for mobile phones.
If you use the sockets for long periods when
the engine is switched off, the battery may
discharge.
An emergency cut-off ensures that the on-
board voltage does not drop too low. If the on-
board voltage is too low, the power to the
sockets is automatically cut. This ensures
that there is sufficient power to start the
engine.
If you have connected a device to the 12 V
socket, leave the cover of the stowage com-
partment open. This prevents the cover from
being blocked.
Socket in the front cent re console Vehicles with manual transmission:
X To open: open the stowage compartment
(Y page 369).
X Lift up the cover of socket ;.
X To close: push cover :of the stowage
compartment closed. Features
381Stowing an d features Z

Vehicles with automatic transmission:
X
To open: open the stowage compartment
(Y page 369).
X Lift up the cover of socket ;.
X To close: push cover :of the stowage
compartment closed.
Socket in the rear-compartment centre
console X
Pull cover ;out by its top edge.
X Lift up the cover of socket :.230 V socket
Important safety notes G
DANGER
When a suitable device is connected, the
230 V power socket will be carrying a high
voltage. You could receive an electric shock if the connector cable or the 230 V power
socket is pulled out of the trim or is damaged
or wet. There is a risk of fatal injury. R
Use only connector cables that are dry and
free of damage.
R When the ignition is off, make sure that the
230 V power socket is dry.
R Immediately have the 230 V power socket
checked or replaced at a qualified special-
ised workshop if it is damaged or has been
pulled out of the trim.
R Never plug the connector cable into a 230 V
power socket that is damaged or has been
pulled out of the trim. G
DANGER
If you reach into the power socket or plug
inappropriate devices into the power socket,
you could receive an electric shock. There is a risk of fatal injury.
Only attach appropriate objects to the powersocket.
! Note that work and repairs on the 230 V
power socket should only be carried out by qualified specialist personnel.
General notes The 230 V power socket provides an alter-
nating voltage of 230 V so that small elec-
tronic devices can be connected. These devi-
ces, such as games consoles, chargers and
laptops, must not consume more than a max- imum of 150 watts altogether.
Do not connect any multiple socket outlets to the 230 V power socket.
Requirements for operating these devices:
R the electronic device that you connect has
a suitable connector and conforms to
standards specific to the country you are in.
R the electronic device connector is plugged
into the 230 V power socket.
R the maximum wattage of the device to be
connected must not exceed 150 watts.
R the on-board voltage is within a permissible
voltage range.
R the 12 V socket in the front centre console
is working properly (Y page 381).382
FeaturesStowing and features

Using the 230 V power socket
X
To switch on: switch the ignition on.
X Open flap =.
X Insert the electronic device connector into
230 V power socket :.
Indicator lamp ;lights up.
X To switch off: remove the connector from
230 V power socket :.
Make sure that you do not pull on the cable. Features
383Stowing and features Z

Operating the mobile phone
You can operate the telephone using the
6
and~ buttons on the multifunction
steering wheel. You can operate other mobile
phone functions via the on-board computer
(Y page 304).
When you remove the key from the ignition
lock, the mobile phone is disconnected from
the vehicle. You can then no longer make calls using the hands-free system.
If a call is active and you remove the key from
the ignition lock, the conversation is trans-
ferred over to the mobile telephone. It is then possible to continue the conversation on the
mobile phone. Floormats
G
WARNING
Objects in the driver's footwell may restrict
the clearance around the pedals or block a
depressed pedal. This jeopardises the oper-
ating and road safety of the vehicle. There is a risk of an accident.
Stow all objects securely in the vehicle so that
they do not get into the driver's footwell.
Always fit the floormats securely and as pre-
scribed in order to ensure that there is always sufficient room for the pedals. Do not use
loose floormats and do not place several floor- mats on top of one another. X
Slide the relevant seat back.
X To fit: lay the floormat in the footwell. X
Press studs :onto retainers ;.
X To remove: pull the floormat away from
retainers ;.
X Remove the floormats. Retrofitted anti-glare film
Retrofitted anti-glare film on the inside of the
windows can interfere with radio/mobile
telephone reception. This is particularly the
case for conductive or metallic-coated films.
You can obtain information about anti-glare
film from a qualified specialist workshop. Features
387Stowing and features Z