2011 MERCEDES-BENZ C-CLASS ESTATE heating

R
changing the instrument cluster settings
R changing the light settings
R changing the vehicle settings
R changing the auxiliary heating settings
R changing the convenience settings
R restoring the factory settings
Instrumen tcluster Selecting the unit of measurement for dis-
tance
The
Display unit Speed-/odometer: function allows you to choose whether cer-
tain displays appear in kilometres or miles.
The selected unit of measurement for dis-
tance applies to:
R the digital speedometer in the Trip menu
R the total distance recorder and the trip
meter
R the trip computer
R the current consumption and the range
R the navigation instruction in the Navi menu
R cruise control
R SPEEDTRONIC
R DISTRONIC PLUS
R ASSYST PLUS service interval display
X Press the =or; button on the steer-
ing wheel to selec tthe Settings menu.
X Press the :or9 button to select the
Inst. cluster submenu.
X Press the abutton to confirm.
X Press the :or9 button to select the
Display unit Speed-/odometer func-
tion.
You will see the selected setting: km or
miles .
X Press the abutton to save the setting.
Switching the additional speedometer
on/off
Only vehicles with manual transmission have
this function. i
Vehicles for the United Kingdom: this
function is not available.
The Dig. speedom [mph]: function allows
you to choose whether the status area in the
multifunction display always shows the speed
in mph instead of the outside temperature.
X Press the =or; button on the steer-
ing wheel to select the Settings menu.
X Press the :or9 button to select the
Inst. cluster submenu.
X Press the abutton to confirm.
X Press :or9 to select the Dig. speedo [mph]: function.
You will see the selected setting: on or
off .
X Press the abutton to save the setting.
Selecting the permanent display function
Only vehicles with automatic transmission
have this function.
i Vehicles for the United Kingdom: this
function is not available.
The Permanent display: function allows
you to choose whether the multifunction dis-
play always shows the outside temperature
or the speed in mph.
X Press the =or; button on the steer-
ing wheel to select the Settings menu.
X Press the :or9 button to select the
Inst. cluster submenu.
X Press the abutton to confirm.
X Press :or9 to select the Perma‐ nent display function.
You will see the selected setting: outside temperature or
Dig. speedom [mph] .
X Press the abutton to save the setting.
Lights Switching the daytime driving lights on/
off
If you have activated the
Day lights func-
tion and the light switch is set to Ã, theDisplays and operation (12-button multifunction steering wheel)
239On-board computer and displays Z

X
Press the abutton to confirm.
X Press :or9 to adjust permanent
SPEEDTRONIC in increments of 10
(230 km/h to
160 km/h ). The
Off setting
switches permanent SPEEDTRONIC off.
X Press the abutton to store the entry.
Switching the automatic locking feature
on/off
If you select the Automatic door lock func-
tion, the vehicle is centrally locked above a
speed of around 15 km/h.
i For further information on the automatic
locking feature, see (Y page 90).
X Press the =or; button on the steer-
ing wheel to select the Settings menu.
X Press the :or9 button to select the
Vehicle submenu.
X Press the abutton to confirm.
X Press the :or9 button to select the
Automatic door lock function.
When the Automatic door locks func-
tion is activated, the vehicle doors are dis-
played in red in the multifunction display.
X Press the abutton to save the setting.
Activating/deactivating the acoustic
locking confirmation
If you activate the Acoustic Lock function,
an audible signal sounds depending on the
vehicle's date of manufacture:
R when locking
or
R once when unlocking and three times when
locking
X Press the =or; button on the steer-
ing wheel to select the Settings menu.
X Press the :or9 button to select the
Vehicle submenu.
X Press the abutton to confirm. X
Press the :or9 button to select the
Acoustic Lock function.
If the Acoustic Lock function is activated,
the & symbol in the multifunction dis-
play lights up red.
X Press the abutton to save the setting.
Activating/deactivating the radar sensor
system
i You must deactivate the radar sensor sys-
tem in certain countries and near radio
telescope facilities. For further informa-
tion, see (Y page 389).
When you are close to radio telescope facili-
ties, the radar sensor system will be deacti-
vated automatically.
The following systems are switched off when
the radar sensor system is deactivated:
R DISTRONIC PLUS (Y page 183)
R BAS PLUS (Y page 73)
R PRE-SAFE ®
Brake (Y page 78)
R Blind Spot Assist (Y page 205)
R Active Blind Spot Assist (Y page 209)
X Press the =or; button on the steer-
ing wheel to select the Settings menu.
X Press the :or9 button to select the
Vehicle submenu.
X Press the abutton to confirm.
X Press the 9or: button to select
Radar sensor (See Owner's Man.): .
You will see the selected setting: on or
off .
X Press the abutton to save the setting.
Heating menu Auxiliary heating departure time
This function is only available on vehicles with
auxiliary heating (Y
page 143).
In the Heating submenu, you can select a
stored departure time or change a departure
time. 242
Displays and operation (12-button multifunction steering wheel)On-board computer and displays

The auxiliary heating timer function calcu-
lates the switch-on time according to the out-
side temperature so that the vehicle is pre-
heated by the departure time. When the
departure time is reached, the auxiliary heat-
ing continues to heat for a further five
minutes and then switches off. The auxiliary
heating adopts the THERMATIC or
THERMOTRONIC temperature setting.
You can switch off the auxiliary heating by
using the remote control or the auxiliary heat-
ing button on the centre console. G
WARNING
Exhaust fumes are produced when the auxili-
ary heating is in operation. Inhaling these
exhaust fumes can be poisonous. You should
therefore switch off the auxiliary heating in
confined spaces without an extraction sys-
tem, e.g. a garage. G
WARNING
When operating the auxiliary heating parts of
the vehicle can get very hot. Make sure that
the exhaust system does not under any cir-
cumstances come into contact with easily
ignitable material such as dry grass or fuels.
The material could otherwise ignite and set
the vehicle alight. Choose your parking spot
accordingly.
Operating the auxiliary heating is thus pro-
hibited at filling stations or when your vehicle
is being refuelled. You must therefore switch
off the auxiliary heating at filling stations.
! Operating the auxiliary heating/ventila-
tion draws on the vehicle battery. After you
have heated or ventilated the vehicle a
maximum of two times, drive for a longer
distance.
i Switch the auxiliary heating on regularly
once a month for about 10 minutes. Selecting the departure time or deactivat-
ing a selected departure time
X
Press the =or; button on the steer-
ing wheel to select the Settings menu.
X Press the :or9 button to select the
Heating submenu.
X Press the abutton to confirm.
You will see the selected setting.
X Press the abutton to confirm.
X Press the :or9 button to select
one of the three departure times or Timer off (no timer active).
X Press the abutton to confirm.
When a departure time is selected, the yel-
low indicator lamp lights up on the auxiliary
heating button.
Changing the departure time
X Press the =or; button on the steer-
ing wheel to select the Settings menu.
X Press the :or9 button to select the
Heating submenu.
X Press the abutton to confirm.
You will see the selected setting.
X Press the abutton to confirm.
X Press the :or9 button to select
Change A ,
B or
C .
X Press the abutton to confirm.
You can now change the departure time.
X Press the =or; button to select the
display to be changed: hours, minutes.
X Press the :or9 button to set the
selected display.
X Press the abutton to store the entry.
The yellow indicator lamp on the auxiliary
heating button lights up.
Convenience Activating/deactivating the EASY-
ENTRY/EXIT feature
You can use the
Easy Entry/Exit: function
to activate or deactivate the EASY ENTRY/
EXIT feature (Y page 111). Displays and operation (12-button multifunction steering wheel)
243On-board computer and displays Z

Display messages Possible causes/consequences and
M Solutions
# The battery is no
tbeing charged.
Aw arning tone also sounds.
Possible causes:
R faulty alternator
R torn poly-V-belt
R a malfunction in the electronics
X Stop the vehicle immediately, paying attentio ntoroad and traf-
fic conditions, and switch off the engine.
X Open the bonnet.
X Check whether the poly-V-belt is torn.
If the poly-V-belt is torn:
! Do not continue driving. The engine could otherwise overheat.
X Consult a qualified specialist workshop.
If the poly-V-belt is OK:
X Visit a qualified specialist workshop. 4
Check eng. oil
level The engine oil level has dropped to the minimum level.
Aw
arning tone also sounds.
X Chec kthe oil level when next refuelling, at the latest
(Y page 323).
X If necessary, top up the engine oil (Y page 324).
X Have the engine checked at a qualified specialist workshop if
the engine oil needs topping up more often than usual. 8
Reserve fuel level The fuel level has dropped into the reserve range.
Operation of the auxiliary heating is deactivated when the fuel level
drops into the reserve range.
X
Refuel at the nearest filling station. C There is only a very small amount of fuel in the fuel tank.
The auxiliary heating cannot be operated.
X
Refuel at the nearest filling station without fail. ¸
Replace
air cleaner Vehicles with a diesel engine: the engine air filter is dirty and must
be replaced.
X
Visit a qualified specialist workshop. !
Clean
the fuel fil‐
ter Vehicles with a diesel engine: there is water in the fuel filter. The
water must be drained off.
X
Visit a qualified specialist workshop. Display messages
269On-board computer and displays Z

Display messages Possible causes/consequences and
M Solutions
# The battery is no
tbeing charged.
Aw arning tone also sounds.
Possible causes:
R faulty alternator
R torn poly-V-belt
R a malfunction in the electronics
X Stop the vehicle immediately, paying attentio ntoroad and traf-
fic conditions, and switch off the engine.
X Open the bonnet.
X Check whether the poly-V-belt is torn.
If the poly-V-belt is torn:
! Do not continue driving. The engine could otherwise overheat.
X Consult a qualified specialist workshop.
If the poly-V-belt is OK:
X Visit a qualified specialist workshop. 4
Check eng. oil
level when next
refuelling The oil level has dropped to the minimum level.
Aw
arning tone also sounds.
X Chec kthe oil level, at the latest when next refuelling
(Y page 323).
X If necessary, top up the engine oil (Y page 324).
X Have the engine checked at a qualified specialist workshop if
the engine oil needs topping up more often than usual. 8
Reserve fuel level The fuel level has dropped into the reserve range.
Operation of the auxiliary heating is deactivated when the fuel level
drops into the reserve range.
X
Refuel at the nearest filling station. C There is only a very small amount of fuel in the fuel tank.
The auxiliary heating cannot be operated.
X
Refuel at the nearest filling station without fail. ¸
Replace
air cleaner Vehicles with a diesel engine: the engine air filter is dirty and must
be replaced.
X
Visit a qualified specialist workshop. !
Clean
the fuel fil‐
ter Vehicles with a diesel engine: there is water in the fuel filter. The
water must be drained off.
X
Visit a qualified specialist workshop. Display messages
271On-board computer and displays Z

Display messages Possible causes/consequences and
M Solutions
j
Check trailer
hitch lock G
Risk of accident
The trailer tow hitch is no tcorrectly engaged.
Aw arning tone also sounds.
X Stop the vehicle immediately, paying attentio ntoroad and traf-
fic conditions, and switch off the engine.
X Apply the parking brake.
X Allow the trailer tow hitch ball coupling to engage in the end
position (Y page 217). D
Power
steering mal‐
function See Own‐
er's Manual G
Risk of accident
The power steering assistance is faulty.
You will need to use more force to steer.
Aw arning tone also sounds.
X Chec kwhether you are able to apply the extra force required.
X If you are able to steer safely: carefully drive on to a qualified
specialist workshop.
X If you are unable to steer safely: do not drive on. Contact the
nearest qualified specialist workshop. &
inoperative Bat‐
tery low The on-board voltage is too low. The auxiliary heating has switched
itself off or cannot be switched on (Y page 143).
X Drive for a longer distance.
The battery is being charged. The auxiliary heating is operational
again as soon as the on-board electrical system voltage is suf-
ficient. &
inoperative
Refuel
vehicle The fuel level in the fuel tank is too low. The auxiliary heating can-
not be switched on (Y page 143).
X Refuel at the nearest filling station. &
inoperative See
Owner's Manual The auxiliary heating has a temporary malfunction or is faulty.
X
When the vehicle is on alevel surface and the engine has cooled
down, make up to four attempts to switch on the auxiliary heat-
ing, waiting several minutes between each attempt
(Y page 143).
X If the auxiliary heating does not switch on, consult a qualified
specialist workshop. Display messages
287On-board computer and displays Z

Engine
Problem Possible causes/consequences and
M Solutions
;
The yellow engine diag-
nostics 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 engin emay
be running in emergency mode.
X Have the vehicle checked as soon as possible at a qualified
specialist workshop. Vehicles with a diesel engine: the fuel tan
khas been run dry
(Y page 173).
X Start the engine three to four times after refuelling.
If the yellow engine diagnostics warning lamp goes out, emer-
gency running mode is cancelled. The vehicle need no tbe
checked. 8
The yellow reserve fuel
warning lamp lights up
while the engine is run-
ning.
The fuel level has dropped into the reserve range.
Operation of the auxiliary heating is deactivated when the fuel level
drops into the reserve range.
X
Refuel at the nearest filling station. ?
The red coolant warn-
ing lamp lights up while
the engine is running
and the coolant tem-
perature gauge is at the
star
toft he scale. 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 traf-
fic conditions, and switch off the engine. Do not continue driving
under any circumstances.
X Apply the parking brake.
X Consult a qualified specialist workshop. 298
Warning and indicator lamps in the instrument clusterOn-board computer and displays

Ashtray in th
erear-compartment centre
console X
To open: pull cover ;out by its top edge.
X To remove the insert: press release but-
ton =and lift the insert up and out.
X To fit the insert: fit insert:from above
into the holde rand press down into the
holde runtil it engages. Cigarette lighter
G
WARNING
Only hold the hot cigarette lighte rby its knob.
Otherwise, you might burn yourself.
Make sure that children travelling in the vehi-
cle are no table to injure themselves on the
hot cigarette lighter or cause a fire with it. X
Turn the key to position 2in the ignition
lock.
X To open: slide cover :forwards until it
engages. X
Press in cigarette lighter ;.
Cigarette lighter ;will pop out automati-
cally when the heating element is red-hot.
X To close: press cover :briefly at the
front.
The cover moves back. 12
Vsockets
Points to observe before use The sockets can be used for accessories with
am
aximum current draw of 180 W(15 A), e.g.
lamps or chargers for mobile phones.
If you use the sockets for long periods when
the engine is switched off, the battery may
discharge.
X Turn the key to position 1in the ignition
lock.
i An emergency cut-off ensures that the on-
board voltage does not drop too low .Ifthe
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.
Socket in the front centre console X
To open: slide cover :forwards until it
engages.
X Lift up the cover of socket ;.
X To close: press cover :briefly at the
front.
The cover moves back. Features
317Stowing and features Z