2015 MERCEDES-BENZ C-Class COUPE engine coolant

X
Press the 0064or0063 button to select the
Easy Entry/Exit
Easy Entry/Exit function.
If the Easy Entry/Exit
Easy Entry/Exit function is activa-
ted, the vehicle steering wheel is displayed
in orange in the multifunction display.
X Press the 0076button to save the setting.
Further information on the EASY-ENTRY/EXIT feature (Y page 101).
Switching the belt adjustment on/off
X Press the 0059or0065 button on the steer-
ing wheel to select the Sett.
Sett.menu.
X Press the 0064or0063 button to select the
Convenience
Convenience submenu.
X Press 0076to confirm.
X Press the 0064or0063 button to select the
Belt Adjustment
Belt Adjustment function.
When the Belt Adjustment
Belt Adjustment function is
activated, the vehicle seat belt is displayed in orange in the multifunction display.
X Press the 0076button to save the setting.
For further information on belt adjustment,
see (Y page 56).
Switching the fold-in mirrors when lock-
ing feature on/off
This function is only available on vehicles with
the memory function (Y page 105).
This function is only available in Canada.
When you activate the Auto.
Auto. Mirror Mirror Fold‐
Fold‐
ing
ing function, the exterior mirrors are folded
in when the vehicle is locked. If you unlock the vehicle and then open a door, the exterior
mirrors fold out again.
X Press the 0059or0065 button on the steer-
ing wheel to select the Sett
Sett menu.
X Press the 0064or0063 button to select the
Convenience Convenience submenu.
X Press 0076to confirm.
X Press the 0064or0063 button to select the
Auto. Mirror Folding
Auto. Mirror Folding function.
If the Auto. Mirror Folding
Auto. Mirror Folding function is
activated, the vehicle's exterior mirror is displayed in orange in the multifunction
display.
X Press the 0076button to save the setting.
If you have switched the Auto. Mirror Auto. Mirror
Folding Folding function on and you fold the exterior
mirrors in using the button on the door
(Y page 103), they will not fold out automat-
ically. The exterior mirrors can then only be
folded out using the button on the door.
Restoring the factory settings X
Press the 0059or0065 button on the steer-
ing wheel to select the Sett.
Sett.menu.
X Press the 0064or0063 button to select the
Factory Setting
Factory Setting submenu.
X Press 0076to confirm.
The Reset All Settings?
Reset All Settings? message
appears.
X Press the 0064or0063 button to select No No
or Yes Yes.
X Press the 0076button to confirm the selec-
tion.
If you have selected Yes Yes, the multifunction
display shows a confirmation message.
For safety reasons, the Day Lights
Day Lightsfunction
in the Lights
Lights submenu is only reset if the
vehicle is stationary. AMG menu in AMG vehicles
AMG displays 0043
Digital speedometer
0044 Gear indicator
0087 Upshift indicator
0085 Engine oil temperature
0083 Coolant temperature 204
Menus and submenusOn-board computer and displays

Display messages
Possible causes/consequences and
0050
0050Solutions 0049
Switch Off Lights Switch Off Lights The lights are still switched on when you leave the vehicle. A
warning tone also sounds.
X Turn the light switch to 0058.Adaptive Highbeam Adaptive Highbeam
Assist Inoperative Assist Inoperative Adaptive Highbeam Assist is faulty.
X
Visit a qualified specialist workshop. Adaptive Highbeam Adaptive Highbeam
Assist Currently Assist Currently
Unavailable See Unavailable See
Operator's Manual Operator's Manual Adaptive Highbeam Assist is deactivated and temporarily inoper-
ative. Possible causes are:
R the windshield in the camera's field of vision is dirty.
R visibility is impaired due to heavy rain, snow or fog.
X Clean the windshield.
If the system detects that the camera is fully operational again, the
Adaptive Highbeam Assist Now Available
Adaptive Highbeam Assist Now Available message is dis-
played.
Adaptive Highbeam Assist is operational again. Engine
Display messages
Possible causes/consequences and
0050 0050Solutions 00BD
Check Coolant Check Coolant
Level See Opera‐ Level See Opera‐
tor's Manual tor's Manual The coolant level is too low.
! Avoid making long journeys with too little coolant in the engine
cooling system. The engine will otherwise be damaged.
X Add coolant, observing the warning notes before doing so
(Y page 275).
X If coolant needs to be added more often than usual, have the
engine coolant system checked at a qualified specialist work-
shop. 00AC The fan motor is faulty.
X At coolant temperatures below 248 ‡ (120 †), drive to the
nearest qualified specialist workshop.
X Avoid subjecting the engine to heavy loads, e.g. driving in moun-
tainous terrain, and stop-and-go traffic. Display
messages
219On-board computer and displays Z

Display messages
Possible causes/consequences and
0050
0050Solutions 00AC
Coolant Stop vehi‐ Coolant Stop vehi‐
cle Switch engine cle Switch engine
off off The coolant is too hot.
A warning tone also sounds.
G WARNING
Do not drive when your engine is overheated. This can cause some
fluids which may have leaked into the engine compartment to
catch fire.
Steam from the overheated engine can also cause serious burns
which can occur just by opening the hood.
There is a risk of injury.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 151).
X Wait until the engine has cooled down.
X Make sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
X Do not start the engine again until the display message goes out
and the coolant temperature is below 248 ‡ (120 †). Other-
wise, the engine could be damaged.
X Pay attention to the coolant temperature display.
X If the temperature increases again, visit a qualified specialist
workshop immediately.
Under normal operating conditions and with the specified coolant
level, the coolant temperature may rise to 248 ‡ (120 †). 220
Display
messagesOn-board computer and displays

Problem
Possible causes/consequences and
0050
0050Solutions 00AC
The red coolant warn-
ing lamp lights up while
the engine is running
and the coolant tem-
perature gauge is at the start of the scale. The temperature sensor for the coolant temperature gage is defec-
tive.
The coolant temperature is no longer being monitored. There is a risk of engine damage if the coolant temperature is too high.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions. Do not continue
driving under any circumstances.
X Secure the vehicle against rolling away (Y page 151).
X Consult a qualified specialist workshop. 242
Warning and indicator lamps in the instrument clusterOn-board computer and displays

Problem
Possible causes/consequences and
0050
0050Solutions 00AC
The red coolant warn-
ing lamp comes on
while the engine is run-
ning.
The coolant level is too low.
If the coolant level is correct, the airflow to the engine radiator may
be blocked or the electric engine radiator fan may be malfunc-
tioning.
The coolant is too hot and the engine is no longer being cooled
sufficiently.
X Observe the additional display messages in the multifunction
display.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 151).
X Wait until the engine has cooled down.
X Make sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
X Check the coolant level and add coolant (Y page 275). Observe
the warning notes.
X If you need to add coolant more often than usual, have the
engine coolant system checked.
X At coolant temperatures below 248 ‡ (120 †), drive to the
nearest qualified specialist workshop.
X Avoid subjecting the engine to heavy loads, e.g. driving in moun-
tainous terrain, and stop-and-go traffic. 00AC
The red coolant warn-
ing lamp comes on
while the engine is run-
ning. A warning tone
also sounds.
The coolant temperature has exceeded 248 ‡ (120 †). The air-
flow to the engine radiator may be blocked or the coolant level may
be too low.
G WARNING
The engine is not being cooled sufficiently and may be damaged.
Do not drive when your engine is overheated. This can cause some
fluids which may have leaked into the engine compartment to
catch fire.
Steam from the overheated engine can also cause serious burns
which can occur just by opening the hood.
There is a risk of injury.
X Observe the additional display messages in the multifunction
display.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 151).
X Wait until the engine has cooled down. Warning and indicator lamps in the instrument cluster
243On-board computer and displays Z

Problem
Possible causes/consequences and
0050
0050Solutions X
Make sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
X Check the coolant level and add coolant (Y page 275). Observe
the warning notes.
X If you need to add coolant more often than usual, have the
engine coolant system checked.
X At coolant temperatures below 248 ‡ (120 †), drive to the
nearest qualified specialist workshop.
X Avoid subjecting the engine to heavy loads, e.g. driving in moun-
tainous terrain, and stop-and-go traffic. Driving systems
Problem
Possible causes/consequences and
0050 0050Solutions 00BA
The red distance warn-
ing lamp lights up while
the vehicle is in motion. A warning tone also
sounds. G
WARNING
You are approaching a vehicle or a stationary obstacle in your line of travel at too high a speed.
There is a risk of an accident.
X Be prepared to brake immediately.
X Pay careful attention to the traffic situation. You may have to
brake or take evasive action.
More information about DISTRONIC PLUS (Y page 160) and
PRE‑SAFE ®
Brake (Y page 70). 244
Warning and indicator lamps in the instrument clusterOn-board computer and displays

X
Replace cap 0043on the filler neck and turn
clockwise.
Ensure that the cap locks into place
securely.
X Check the oil level again with the oil dip-
stick (Y page 273).
Further information on engine oil
(Y page 345). Checking and adding other service
products
Checking coolant level G
WARNING
Certain components in the engine compart-
ment, such as the engine, radiator and parts
of the exhaust system, can become very hot.
Working in the engine compartment poses a
risk of injury.
Where possible, let the engine cool down and touch only the components described in the
following. G
WARNING
The engine cooling system is pressurized, par- ticularly when the engine is warm. When
opening the cap, you could be scalded by hotcoolant spraying out. There is a risk of injury.
Let the engine cool down before opening the
cap. Wear eye and hand protection when
opening the cap. Open the cap slowly half a
turn to allow pressure to escape.
Only check the coolant level when the vehicle
is on a level surface and the engine has cooled down.
X Turn the SmartKey to position 2in the igni-
tion lock (Y page 133).
On vehicles with KEYLESS-GO, press the
Start/Stop button twice (Y page 134).
X Check the coolant temperature display in
the instrument cluster.
The coolant temperature must be below
158 ‡ (70 †). X
Slowly turn cap 0043half a turn counter-
clockwise and allow excess pressure to
escape.
X Turn cap 0043further counter-clockwise and
remove it.
If the coolant is at the level of marker bar 0087
in the filler neck when cold, there is enough coolant in coolant expansion tank 0044.
If the coolant level is approximately 0.6 in
(1.5 cm) above marker bar 0087in the fuel
filler neck when warm, there is enough
coolant in expansion tank 0044.
X If necessary, add coolant that has been tes-
ted and approved by Mercedes-Benz.
X Replace cap 0043and turn it clockwise as far
as it will go.
For further information on coolant, see
(Y page 347).
Adding washer fluid to the windshield
washer system/headlamp cleaning
system G
WARNING
Certain components in the engine compart-
ment, such as the engine, radiator and parts
of the exhaust system, can become very hot.
Working in the engine compartment poses a
risk of injury.
Where possible, let the engine cool down and touch only the components described in the
following. Engine compartment
275Maintenance and care Z

X
Slide the right-hand front seat to its rear-
most position.
X Fold floor covering 0043upwards.
You will see VIN 0044.
The VIN can also be found in the following
locations:
R on the lower edge of the windshield
(Y page 343)
R on the vehicle identification plate
(Y page 342) Engine number
0043
Emission control information plate,
including the certification of both federal
and Californian emissions standards
0044 Engine number (stamped into the crank-
case)
0087 VIN (on the lower edge of the windshield) Service products and filling capaci-
ties Important safety notes
G
WARNING
Service products may be poisonous and haz-
ardous to health. There is a risk of injury.
Comply with instructions on the use, storage
and disposal of service products on the labels of the respective original containers. Always
store service products sealed in their original containers. Always keep service products out
of the reach of children. H
Environmental note
Dispose of service products in an environ-
mentally responsible manner.
Service products include the following: R Fuels
R Lubricants (e.g. engine oil, transmission oil)
R Coolant
R Brake fluid
R Windshield washer fluid
R Climate control system refrigerant
Comply with all valid regulations with respect to handling, storing, and disposing of service
fluids.
Components and service products must be
matched. You should therefore only use prod- ucts that have been tested and approved by
Mercedes-Benz.
Information about tested and approved prod-
ucts can be obtained from an authorized
Mercedes-Benz Center or on the Internet at
http://bevo.mercedes-benz.com.
You can recognize service products approved by Mercedes-Benz by the following inscrip-
tion on the containers:
R MB-Freigabe (e.g. MB-Freigabe 229.51)
R MB Approval (e.g. MB Approval 229.51)
Other designations or recommendations indi- cate a level of quality or a specification in
accordance with an MB Sheet Number (e.g.
MB 229.5). They have not necessarily been
approved by Mercedes-Benz. Fuel
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, open flames, creating
sparks and smoking. Switch off the engine Service products and filling capacities
343Technical data
Z