2014 MERCEDES-BENZ C-CLASS ESTATE brake

level. When driving in mountainous areas,
note that the power output of the engine,
and consequently the vehicle's gradient-
climbing capability, decrease with increas-
ing altitude. Folding out the ball coupling
G
WARNING
If the ball coupling is not correctly engaged,
the trailer can detach. There is a risk of an
accident.
Always engage the ball coupling as described. G
WARNING
If you release the ball coupling or it does not
engage correctly when folding in, it will swing out. Within pivoting range of the ball coupling,
there is an increased risk of an accident and
injury.
Only release the ball coupling if the pivoting
range is unobstructed. Always make sure that the ball coupling engages when folding in.
Before you can tow a trailer with your vehicle, you must fold out the ball coupling.
X Make sure that the vehicle is stationary. X
Open the tailgate.
X Pull release knob :until the ball coupling
unlocks.
The ball coupling folds out from under the
rear bumper. The indicator lamp on the release knob
flashes. The trailer socket folds away auto- matically. X
Press the ball coupling in the direction of
the arrow until it engages in a vertical posi-
tion.
The indicator lamp on the release knob
goes off.
The multifunction display shows the
Check trailer hitch lock Check trailer hitch lock message
until the ball coupling is engaged.
X Remove the protective covering from the
ball coupling and store it in a safe place.
Hybrid vehicles: observe the safety notes
for hybrid vehicles (Y page 273). Coupling up a trailer
X Make sure that the transmission is in posi-
tion P.
X Apply the electric parking brake.
X Position the trailer horizontally behind the
vehicle.
X Couple up the trailer.
X Establish the electric connection between
the vehicle and the trailer.
X Check that the trailer lighting system is
working.
X Push the combination switch upwards/
downwards and check whether the corre-
sponding turn signal on the trailer is flash-
ing. 288
Towing a trailerDriving and parking

A connected trailer is only recognised when
the electrical connection is established
correctly and when the lighting system is
working properly. The functioning of other
systems, e.g. ESP ®
, PARKTRONIC, Active
Parking Assist, Active Blind Spot Assist or
Lane Keeping Assist also depends on this. Uncoupling a trailer
G
WARNING
If you uncouple a trailer with an engaged over- run brake, you could trap your hand between
the vehicle and the trailer drawbar. This poses a risk of injury.
Do not uncouple a trailer with an engaged
overrun brake. G
WARNING
Vehicles with level control:
If you disconnect the trailer cable, the vehicle is lowered. This can cause you or others to
become trapped between the vehicle body
and tyres, or underneath the vehicle. This
poses a risk of injury.
Make sure that no-one is in the immediate
vicinity of the wheel arch or underneath the
vehicle when disconnecting the trailer cable.
! Do not disconnect a trailer with an
engaged overrun brake. Otherwise, your
vehicle could be damaged by the rebound- ing of the overrun brake.
! Remove the installed adapter cable
before folding in the ball coupling. Other-
wise, damage may occur to the rear
bumper and the adapter cable.
X Make sure that the transmission is in posi-
tion P.
X Apply the electric parking brake.
X Secure the trailer against rolling away.
X Remove the trailer cable and decouple the
trailer. Folding in the ball coupling
G
WARNING
If you release the ball coupling or it does not
engage correctly when folding in, it will swing out. Within pivoting range of the ball coupling,
there is an increased risk of an accident and
injury.
Only release the ball coupling if the pivoting
range is unobstructed. Always make sure that the ball coupling engages when folding in.
Fold the ball coupling back in if you are not
using the trailer tow hitch. X Make sure that the vehicle is stationary and
the trailer cables are disconnected.
X Place the protective covering on the ball
coupling.
X Open the tailgate. X
Pull release knob :until the ball coupling
unlocks.
The ball coupling folds down from under the rear bumper. The indicator lamp on the
release knob flashes.
Do not attempt to speed this process up by
applying additional pressure with your foot. The system could otherwise be mechani-
cally damaged. Towing a trailer
289Driving and parking Z

Redialling
The on-board computer saves the last names
or numbers dialled in the redial memory.
X Use ò on the steering wheel to call up
the list of menus.
X Press :or9 on the steering wheel
to select the Telephone
Telephone menu.
X Confirm by pressing aon the steering
wheel.
X Press the 6button to switch to the
redial memory.
X Press the :or9 button to select the
desired name or number.
X Press the 6ora button to start dial-
ling.
or
X To exit the redial memory: press the
~ or% button. Assistance graphic menu
X
Use ò on the steering wheel to call up
the list of menus.
X Press the :or9 button on the steer-
ing wheel to select the Assistance
Assistance
graphic
graphic menu.
X Confirm by pressing aon the steering
wheel.
The multifunction display shows the
DISTRONIC PLUS distance display in the
assistance graphic.
X Press :to display the ATTEN-
TION ASSIST assessment. The assistance graphic shows you the status
of and/or information from the following driv-ing systems or driving safety systems:
R DISTRONIC PLUS (Y page 232)
R Traffic Sign Assist (Y page 260)
R Distance warning function and autono-
mous braking system of COLLISION PRE-
VENTION ASSIST PLUS (Y page 310)
R PRE-SAFE ®
Brake (Y page 84)
R Blind Spot Assist (Y page 263) or Active
Blind Spot Assist (Y page 266)
R ATTENTION ASSIST (Y page 258)
R Lane Keeping Assist (Y page 265)or Active
Lane Keeping Assist (Y page 269)
R Rear window wiper (Y page 147) Service menu
Introduction In the
Service Service menu, you have the following
options:
R Calling up display messages in the mes-
sage memory (Y page 316)
R Restarting the tyre pressure loss warning
system (Y page 441)
R Checking the tyre pressure electronically
(Y page 438)
R Calling up the service due date
(Y page 399)
R Displaying the coolant temperature
(Y page 309)
R Displaying the AdBlue ®
level and range
(Y page 309) (BlueTEC vehicles only) 308
Menus and submenusOn-board computer and displays

Activating/deactivating PRE-SAFE
®
Brake
PRE ‑SAFE ®
Brake is only available in vehicles
with DISTRONIC PLUS.
X Use ò on the steering wheel to call up
the list of menus.
X Press the :or9 button on the steer-
ing wheel to select the Settings
Settings menu.
X Confirm by pressing aon the steering
wheel.
X Use : or9 to select the Assis‐ Assis‐
tance
tance submenu.
X Press ato confirm.
X Press the :or9 button to select
PRE-SAFE Brake
PRE-SAFE Brake.
X Press ato confirm.
The current selection is displayed.
X To activate/deactivate: press thea
button again.
When PRE-SAFE ®
Brake is deactivated, the
æ symbol appears in the Assistance
Assistance
graphic
graphic menu in the multifunction dis-
play.
For more information on PRE‑SAFE ®
Brake,
see (Y page 84).
Activating/deactivating Blind Spot Assist
X Use ò on the steering wheel to call up
the list of menus.
X Press the :or9 button on the steer-
ing wheel to select the Settings
Settings menu.
X Confirm by pressing aon the steering
wheel.
X Use : or9 to select the Assis‐ Assis‐
tance
tance submenu.
X Press ato confirm.
X Press the :or9 button to select
Blind Spot Assist
Blind Spot Assist .
X Press ato confirm.
The current selection is displayed.
X To activate/deactivate: press thea
button again.
When Blind Spot Assist or Active Blind Spot Assist is activated, grey radar waves prop- agating backwards appear next to the vehi-
cle in the Assistance graphic Assistance graphic menu in
the multifunction display.
For further information about Blind Spot
Assist, see (Y page 263).
For further information about Active Blind
Spot Assist, see (Y page 266).
Setting ATTENTION ASSIST X Use ò on the steering wheel to call up
the list of menus.
X Press the :or9 button on the steer-
ing wheel to select the Settings Settingsmenu.
X Confirm by pressing aon the steering
wheel.
X Use : or9 to select the Assis‐
Assis‐
tance
tance submenu.
X Press ato confirm.
X Press the :or9 button to select
Attention Assist
Attention Assist .
X Press ato confirm.
X Press the :or9 button to set Off
Off,
Standard
Standard orSensitive
Sensitive .
X Press the abutton to confirm the selec-
tion.
When ATTENTION ASSIST is deactivated,
the é symbol appears in the Assis‐ Assis‐
tance graphic
tance graphic menu in the multifunction
display when the ignition is on.
For further information about ATTENTION
ASSIST, see (Y page 258).
Setting Lane Keeping Assist
X Use ò on the steering wheel to call up
the list of menus.
X Press the :or9 button on the steer-
ing wheel to select the Settings Settingsmenu.
X Confirm by pressing aon the steering
wheel.
X Use : or9 to select the Assis‐
Assis‐
tance
tance submenu.
X Press ato confirm.
X Press :or9 to select Lane Keep‐
Lane Keep‐
ing Assist
ing Assist . Menus and submenus
311On-board computer and displays Z

Safety systems
Display messages
Possible causes/consequences and
M
MSolutions !÷
currently unavail‐ currently unavail‐
able See Owner's able See Owner's
Manual Manual ABS (Anti-lock Brake System), ESP
®
(Electronic Stability Program),
BAS (Brake Assist System), PRE‑ SAFE®
, HOLD function, hill start
assist, ESP ®
trailer stabilisation, Crosswind Assist, adaptive brake
lights, STEER CONTROL, Active Lane Keeping Assist and Active
Blind Spot Assist are temporarily unavailable.
BAS PLUS, PRE‑SAFE ®
Brake, PRE‑SAFE ®
PLUS and COLLISION
PREVENTION ASSIST PLUS may also have failed.
In addition, the ÷,åand! warning lamps light up in the
instrument cluster.
ATTENTION ASSIST is deactivated.
For example, the on-board voltage may be insufficient.
G WARNING
The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you
brake hard, for example.
The steerability and braking characteristics may be severely affec-ted. The braking distance may increase in an emergency braking
situation.
If ESP ®
is not operational, ESP ®
is unable to stabilise the vehicle.
There is an increased danger of skidding and risk of an accident.
X Drive on carefully.
Carefully drive on a suitable stretch of road, making slight steer-
ing movements at a speed above 20 km/h.
If the display message disappears, the functions mentioned
above are available again.
If the display message continues to be displayed:
X Drive on carefully.
X Visit a qualified specialist workshop. !÷
inoperative See inoperative See
Owner's Manual Owner's Manual ABS, ESP
®
, BAS, PRE‑SAFE ®
, HOLD function, hill start assist,
ESP ®
trailer stabilisation, Crosswind Assist, adaptive brake lights,
STEER CONTROL, Active Lane Keeping Assist and Active Blind
Spot Assist are unavailable due to a malfunction.
BAS PLUS, PRE‑SAFE ®
Brake, PRE‑SAFE ®
PLUS and COLLISION
PREVENTION ASSIST PLUS may also have failed.
The J, ÷, åand! warning lamps may also light up
in the instrument cluster.
ATTENTION ASSIST is deactivated. Display messages
317On-board computer and displays Z

Display messages
Possible causes/consequences and
M
MSolutions G
WARNING
The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you
brake hard, for example.
The steerability and braking characteristics may be severely affec- ted. The braking distance may increase in an emergency braking
situation.
If ESP ®
is not operational, ESP ®
is unable to stabilise the vehicle.
There is an increased danger of skidding and risk of an accident.
X Drive on carefully.
X Visit a qualified specialist workshop immediately. ÷
inoperative See inoperative See
Owner's Manual Owner's Manual ESP
®
, BAS, PRE ‑SAFE®
, HOLD function, hill start assist,
ESP ®
trailer stabilisation, Crosswind Assist, adaptive brake lights,
STEER CONTROL, Active Lane Keeping Assist and Active Blind
Spot Assist are unavailable due to a malfunction.
BAS PLUS, PRE‑SAFE ®
Brake, PRE ‑SAFE®
PLUS and COLLISION
PREVENTION ASSIST PLUS may also have failed.
In addition, the ÷andå warning lamps light up in the
instrument cluster.
ATTENTION ASSIST is deactivated.
G WARNING
The brake system continues to function normally, but without the functions listed above.
The braking distance may thus increase in an emergency braking
situation.
If ESP ®
is not operational, ESP ®
is unable to stabilise the vehicle.
There is an increased danger of skidding and risk of an accident.
X Drive on carefully.
X Visit a qualified specialist workshop. 318
Display
messagesOn-board computer and displays

Display messages
Possible causes/consequences and
M
MSolutions ÷
currently unavail‐ currently unavail‐
able See Owner's able See Owner's
Manual Manual ESP
®
, BAS, PRE ‑SAFE®
, HOLD function, hill start assist,
ESP ®
trailer stabilisation, Crosswind Assist, adaptive brake lights,
STEER CONTROL, Active Lane Keeping Assist and Active Blind
Spot Assist are unavailable due to a malfunction.
BAS PLUS, PRE‑SAFE ®
Brake, PRE ‑SAFE®
PLUS and COLLISION
PREVENTION ASSIST PLUS may also have failed.
In addition, the ÷andå warning lamps light up in the
instrument cluster.
The self-diagnosis function, for example, may not be complete.
ATTENTION ASSIST is deactivated.
G WARNING
The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you
brake hard, for example.
The braking distance may thus increase in an emergency braking
situation.
If ESP ®
is not operational, ESP ®
is unable to stabilise the vehicle.
There is an increased danger of skidding and risk of an accident.
X Carefully drive on a suitable stretch of road, making slight steer-
ing movements at a speed above 20 km/h.
If the display message disappears, the functions mentioned
above are available again.
If the display message continues to be displayed:
X Drive on carefully.
X Visit a qualified specialist workshop. Display
messages
319On-board computer and displays Z

Display messages
Possible causes/consequences and
M
MSolutions T!
÷
inoperative See inoperative See
Owner's Manual Owner's Manual EBD (electronic brake force distribution), ABS, ESP
®
, BAS,
PRE ‑SAFE ®
, HOLD function, hill start assist, ESP ®
trailer stabili-
sation, Crosswind Assist, adaptive brake lights, STEER CONTROL, Active Lane Keeping Assist and Active Blind Spot Assist are
unavailable due to a malfunction.
BAS PLUS, PRE‑SAFE ®
Brake, PRE ‑SAFE®
PLUS and COLLISION
PREVENTION ASSIST PLUS may also have failed.
In addition, the ÷,åand! warning lamps light up in the
instrument cluster and a warning tone sounds.
G WARNING
The brake system continues to function normally, but without the functions listed above. The front and rear wheels could therefore
lock, for example, if you brake hard.
The steerability and braking characteristics may be severely affec-ted. The braking distance may increase in an emergency braking
situation.
If ESP ®
is not operational, ESP ®
is unable to stabilise the vehicle.
There is an increased danger of skidding and risk of an accident.
X Drive on carefully.
X Visit a qualified specialist workshop immediately. J
Brake immediately Brake immediately A malfunction has occurred while the HOLD function is active.
or
With the HOLD function activated, you have:
R opened the driver's door and released the seat belt or
R switched off the engine
A tone may also sound at regular intervals. If you attempt to lock the vehicle, the tone becomes louder.
You cannot start the engine.
X Paying attention to the traffic situation, immediately depress the
brake pedal firmly and hold until the display message disap-
pears.
X Safeguard the vehicle against rolling away (Y page 211).
You can restart the engine. !
Release parking Release parking
brake brake The red
!indicator lamp flashes and a warning tone sounds. A
condition for automatic release of the electric parking brake is not
fulfilled (Y page 213).
You are driving with the electric parking brake applied.
X Release the electric parking brake manually. 320
Display
messagesOn-board computer and displays