2015 MERCEDES-BENZ B-CLASS HATCHBACK coolant temperature

Pre-entry climate control via key
(on-board computer) ......................1
85
Problem with the rear window
heating .......................................... 120
Problems with cooling with air
dehumidification ............................ 117
Setting the air distribution ............. 117
Setting the air vents ..................... .123
Setting the airflow ......................... 118
Setting the temperature ................ 117
Switching air-recirculation mode
on/off ............................................ 120
Switching on/off ........................... 116
Switching residual heat on/off ...... 122
Switching the rear window heat-
ing on/off ...................................... 119
Switching the ZONE function on/
off ................................................. .118
THERMOTRONIC (2-zone) auto-
matic climate control ..................... 115
Cockpit
Overview .......................................... 25
COLLISION PREVENTION ASSIST
PLUS
Activating/deactivating ................. 183
Display message ............................ 196
Operation/notes .............................. 62
COMAND
Generated electricity ..................... 137
COMAND display
Cleaning ......................................... 246
Combination switch ............................ 99
Consumption statistics (on-board
computer) .......................................... 176
Convenience closing feature .............. 83
Convenience opening feature ............ 83
Convenience opening/closing (air-
recirculation mode) ........................... 120
Coolant (engine)
Checking the level ......................... 240
Important safety notes .................. 283
Cooling
see Climate control
Copyright ............................................. 24
Cornering lamps
Changing bulbs .............................. 106 Cornering light function
Display message ............................ 201
Function/notes ............................ .100
Crash-responsive emergency light-
ing ....................................................... 103
Cruise control
Activation conditions ..................... 151
Cruise control lever ....................... 151
Deactivating ................................... 152
Display message ............................ 207
Driving system ............................... 150
Important safety notes .................. 151
LIM indicator lamp ......................... 151
Selecting ........................................ 151
Setting a speed .............................. 152
Storing and maintaining current
speed ............................................. 151
Cup holder
Centre console .............................. 233
Important safety notes .................. 233
Rear compartment ......................... 234 D
Data see Technical data
Daytime driving lights
Display message ............................ 202
Function/notes ................................ 98
Switching on/off (on-board com-
puter) ............................................. 186
Dealership
see Qualified specialist workshop
Declarations of conformity ................. 22
Departure time
Setting (on-board computer) .......... 184
Diagnostics connection ......................22
Digital speedometer .........................178
Dipped-beam headlamps
Changing bulbs .............................. 105
Display message ............................ 201
Setting for driving abroad (sym-
metrical) .......................................... 97
Setting for driving on the right/
left ................................................. 187
Switching on/off .............................. 98
DIRECT SELECT lever
Transmission ................................. 129 6
Index

X
Make sure that the windscreen wipers are
switched off.
X Pull release lever :on the bonnet.
The bonnet is released. X
Reach into the gap between the bonnet and
the radiator trim and press bonnet catch
lever ;to the left.
X Raise the bonnet. X
Pull support strut ?out of bracket A.
X Lift up support strut ?and insert it into yel-
low retaining clip =.
Closing the bonnet X
Raise the bonnet slightly and, at the same
time, remove support strut ?from yellow
retaining clip =.
X Swing support strut ?down and press it into
bracket Auntil it engages.
X Lower the bonnet and let it fall from a height
of approximately 20 cm.
X Check that the bonnet has engaged properly.
If the bonnet can be raised slightly, it is not
properly engaged. Do not press the bonnet
closed. Open the bonnet again and close it
with a little more force. Checking and adding other service
products
Checking the coolant level G
WARNING
The cooling system is pressurised, particu-
larly when the engine is warm. If you open the cap, you could be scalded if hot coolant
sprays out. There is a risk of injury.
Let the engine cool down before you open the
cap. Wear gloves and eye protection. Open
the cap slowly to release the pressure.
! The coolant level must only be checked and
corrected when the engine has cooled down
(coolant temperature under 40 †). Checking
the coolant level when the coolant tempera-
ture is over 40 † can lead to damage to the
engine or engine cooling system. X
Park the vehicle on a level surface.
Only check the coolant level when the vehicle
is on a level surface and the drive system has
cooled down.
X Turn the key to position 2in the ignition lock
(Y page 126).
X Check the coolant temperature display in the
instrument cluster.
The coolant temperature must be below
40 †.
X Turn the key to position 0in the ignition lock
(Y page 126).
X Slowly turn cap :anti-clockwise to allow
excess pressure to escape.
X Turn cap :further anti-clockwise and
remove it.
If the coolant is at the level of marker bar =
in the filler neck when cold, there is enough
coolant in coolant expansion tank ;.240
Engine compartmentMaintenance and care

Other identifications, for example:
R 0 W-30
R 5 W-30
R 5 W-40
i Further information can be obtained from
any Mercedes-Benz Service Centre or on the
Internet at http://bevo.mercedes-benz.com. Brake fluid
G
WARNING
The brake fluid continuously absorbs mois-
ture from the air. This results in the boiling
point of the brake fluid lowering. If the boiling
point of the brake fluid is too low, vapour
pockets may form when the brakes are sub-
jected to a heavy load. This would impair brak- ing efficiency. There is a risk of an accident.
Have the brake fluid renewed at the prescri-
bed intervals.
When handling brake fluid, observe the impor-
tant safety notes on service products
(Y page 282).
The brake fluid change intervals can be found in the Service Booklet.
Only use brake fluid approved by Mercedes-
Benz according to MB-Freigabe or MB-Approval
331.0.
Information about approved brake fluid can be
obtained at any qualified specialist workshop or on the Internet at
http://bevo.mercedes-benz.com.
i Have the brake fluid regularly replaced at a
qualified specialist workshop and the replace- ment confirmed in the Service Booklet. Coolant
Important safety notes G
WARNING
If antifreeze comes into contact with hot com- ponents in the engine compartment, it may
ignite. There is a risk of fire and injury.
Let the engine cool down before you top up
the antifreeze. Make sure that antifreeze is not spilled next to the filler neck. Thoroughly
clean the antifreeze from components before
starting the engine.
! Only add coolant that has been premixed
with the desired antifreeze protection. You
could otherwise damage the engine.
Further information on coolants can be found in the Mercedes-Benz Specifications for Ser-
vice Products, MB Specifications for Service
Products 310.1, e.g. on the Internet at
http://bevo.mercedes-benz.com. Or contact
a qualified specialist workshop.
! Always use a suitable coolant mixture, even
in countries where high temperatures prevail.
Otherwise, the engine cooling system is not
sufficiently protected from corrosion and
overheating.
i Have the coolant regularly replaced at a
qualified specialist workshop and the replace- ment confirmed in the Service Booklet.
Comply with the important safety precautions
for service products when handling coolant
(Y page 282).
The coolant is a mixture of water and anti-
freeze/corrosion inhibitor. It is responsible for
the following:
R anti-corrosion protection
R antifreeze protection
R raising the boiling point
If antifreeze/corrosion inhibitor is present in the
correct concentration, the boiling point of the
coolant during operation will be approximately
130 †.
The antifreeze/corrosion inhibitor concentra-
tion in the engine cooling system should:
R be at least 50%. This will protect the engine
cooling system against freezing down to
approximately -37 †.
R not exceed 55% (antifreeze protection down
to -45 †). Heat will otherwise not be dissipa-
ted as effectively.
Mercedes-Benz recommends coolant or anti-
freeze/corrosion inhibitor concentrate in
accordance with
MB Specifications for Service Products 310.1.
i When the vehicle is first delivered, it is filled
with a coolant mixture that ensures adequate
antifreeze and corrosion protection. Service products and capacities
283Technical data Z

i
The coolant is checked at every mainte-
nance interval at a qualified specialist work-
shop. Windscreen washer system and head-
lamp cleaning system
Important safety notes G
WARNING
If windscreen washer concentrate comes into contact with hot components of the engine or
the exhaust system, it can ignite. There is a
risk of fire and injury.
Make sure the windscreen washer concen-
trate does not come into contact with the filler neck.
! Only use washer fluid that is suitable for
plastic lamp lenses, e.g. MB SummerFit or MB
WinterFit. Unsuitable washer fluid could dam-
age the plastic lenses of the headlamps.
! Do not use distilled or de-ionised water in
the washer fluid reservoir. Otherwise, the
level sensor may be damaged.
! Only the washer fluids SummerFit and Win-
terFit can be mixed. Otherwise, the spraying
nozzles could become blocked.
Comply with the important safety notes for ser-
vice products when handling washer fluid
(Y page 282).
At temperatures above freezing:
X Fill the washer fluid reservoir with a mixture of
water and washer fluid, e.g. MB SummerFit.
Mix 1 part MB SummerFit to 100 parts water.
At temperatures below freezing:
X Fill the washer fluid reservoir with a mixture of
water and washer fluid, e.g. MB WinterFit.
For the correct mixing ratio refer to the infor-
mation on the antifreeze reservoir.
i Add washer fluid concentrate, e.g. MB Sum-
merFit or MB WinterFit, to the washer fluid all
year round. Vehicle data
General notes
Please note that for the specified vehicle data: R the heights specified may vary as a result of:
- tyres
- load
- condition of the suspension
- optional equipment
R optional equipment reduces the maximum
payload
R vehicle-specific weight information can be
found on the vehicle identification plate
(Y page 281).
R only for certain countries: you can find vehi-
cle-specific vehicle data in the COC docu-
ments (CERTIFICATE OF CONFORMITY).
These documents are delivered with your
vehicle.
R The range values were determined in the
respective, currently valid version according
to Regulation (EC) No. 715/2007.
The range depends on the drive program selec-
ted and can vary due to:
R higher and lower outside temperatures
R the style of driving
R activated electrical consumers
i Information on the range can be found in the
Trip Trip menu (Y page 178). Dimensions and weights284
Vehicle dataTechnical data