2017 MERCEDES-BENZ CLA coolant level

Change of ownership .......................... 25
Child
Restraint system .............................. 55
Child seat
Forward-facing restraint system ...... 58
LATCH-type (ISOFIX) child seat
anchors ............................................ 56
On the front-passenger seat ............ 57
Rearward-facing restraint system .... 58
Top Tether ...................................... .5 6
Child-proof locks
Important safety notes .................... 58
Rear doors ...................................... .5 9
Children
Special seat belt retractor .............. .5 4
Cigarette lighter ................................ 241
Cleaning
Mirror turn signal .......................... .2 62
Climate control
Air-conditioning system ................. 110
Automatic climate control (dual-
zone) .............................................. 112
Controlling automatically .............. .1 15
Cooling with air dehumidification .. 114
Defrosting the windows ................. 117
Defrosting the windshield .............. 116
General notes ................................ 109
Indicator lamp ................................ 115
Information about using auto-
matic climate control ..................... 113
Maximum cooling .......................... 117
Notes on using the air-condition-
ing system ..................................... 111
Overview of systems ..................... .1 09
Problem with the rear window
defroster ........................................ 118
Probl ems with cooling with air
dehumidification ............................ 115
Refrigerant ..................................... 313
Refrigerant filling capacity ............. 314
Setting the air distribution ............. 115
Setting the air vents ..................... .1 19
Setting the airflow ......................... 116
Setting the temperature ................ 115
Switching air-recirculation mode
on/off ............................................ 118
Switching on/off ........................... 114
Switching residual heat on/off ...... 118 Switching the rear window
defroster on/off ............................ 117
Switching the ZONE function
on/off ............................................ 116
Cockpit
Overview .......................................... 31
COMAND
Switching on/off ........................... 228
COMAND display
Cleaning ......................................... 263
Combination switch .......................... 100
Compass
Calibrating ..................................... 252
Calling up ....................................... 252
Magnetic field zone maps .............. 252
Setting .......................................... .2 52
Connecting a USB device
see also Digital Operator's Man-
ual ................................................. .2 27
Consumption statistics (on-board
computer) .......................................... 177
Controller .......................................... .2 28
Convenience closing feature .............. 82
Convenience opening feature ............ 82
Coolant (engine)
Checking the level ......................... 257
Display message ............................ 202
Filling capacity ............................... 313
Important safety notes .................. 312
Temperature (on-board computer,
Mercedes-AMG vehicles) .............. .1 85
Temperature gauge ........................ 175
Warning lamp ................................. 223
Cooling
see Climate control
Copyright ............................................. 30
Co rnering light function
Display message ............................ 199
Cruise control
Activation conditions ..................... 149
Cruise control lever ....................... 148
Deactivating ................................... 149
Display message ............................ 208
Driving system ............................... 148
Function/notes ............................ .1 48
Important safety notes .................. 148
Setting a speed .............................. 149 Index 7

Problem
Possible causes/consequences and P Solutions
The engine does not
start. You cannot hear
the starter motor. The on-board voltage is too low because the battery is too weak or
discharged. X
Jump-start the vehicle ( Y
page 273).
If the engine does not start despite attempts to jump-start it: X
Consult a qualified specialist workshop.
The starter motor was exposed to a thermal load that was too high. X
Allow the starter motor to cool down for approximately two minutes. X
Try to start the engine again.
If the engine still does not start: X
Consult a qualified specialist workshop.
The engine is not running
smoothly and is misfir-
ing. There is a malfunction in the engine electronics or in a mechanical
component of the engine management system. X
Only depress the accelerator pedal slightly.
Otherwise, non-combusted fuel may get into the catalytic converter
and damage it. X
Have the cause rectified immediately at a qualified specialist work-
shop.
The coolant temperature
gauge shows a value
above 248 ‡ (120 †).
The coolant warning
lamp may also be on and
a warning tone may
sound. The coolant level is too low. The coolant is too hot and the engine is no
longer being cooled sufficiently. X
Stop as soon as possible and allow the engine and the coolant to
cool down. X
Check the coolant level ( Y
page 257). Observe the warning notes
as you do so and add coolant if necessary.
DYNAMIC SELECT button (all vehicles
except Mercedes-AMG vehicles) Use the DYNAMIC SELECT button to change the
drive program. Depending on the drive program
selected the following vehicle characteristics
will change: R
the drive (engine and transmission manage-
ment) R
the suspension (vehicles with damping sys-
tem or AMG adaptive sport suspension sys-
tem) R
the steering. R
the availability of the ECO start/stop function R
the climate control
Each time you start the engine with the Smart-
Key or the Start/Stop button, drive program C is
activated. For further information about starting
the engine, see ( Y
page 122). X
Press DYNAMIC SELECT button C as many
times as necessary until the desired drive
program is selected.
The selected drive program appears in the
multifunction display. After five seconds the
display goes out and the status icon of the
selected drive program appears.DYNAMIC SELECT button (all vehicles except Mercedes-AMG vehicles) 127
Driving and parking Z

Coolant temperature gauge
G WARNING
Opening the hood when the engine is over-
heated or when there is a fire in the engine
compartment could expose you to hot gases
or other service products. There is a risk of
injury.
Let an overheated engine cool down before
opening the hood. If there is a fire in the
engine compartment, keep the hood closed
and contact the fire department.
! A display message is shown if the coolant
temperature is too high.
If the coolant temperature is over 248 ‡
(120 †), do not continue driving. The engine
will otherwise be damaged.
The coolant temperature gage is in the instru-
ment cluster on the right-hand side ( Y
page 32).
The H marking in the coolant temperature gauge
corresponds to a coolant temperature of
approximately 248 ‡ (120 †).
Under normal operating conditions and at the
correct coolant level, the coolant temperature
gauge may rise to the H marking. Operating the on-board computer
Overview
C
Multifunction display D
Right control panel

Checking and adding other service
products
Checking coolant level
G WARNING
The cooling system is pressurized, particularly
when the motor 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. Slowly
open the cap to relieve pressure.
! The coolant may only be checked and cor-
rected when the engine is cool (coolant tem-
perature below 104 ‡ (40 †) . Checking the
coolant when the coolant temperature is
above 104 ‡ (40 †) ma y result in damage to
th e engin e or to th e engin e coolin g system.
X
Par k th e vehicl e on a level surface.
Only chec k th e coolan t level when th e vehicl e
is on a level surfac e and th e engin e has cooled
down .X
Turn th e SmartKey to position 2 in th e ignition
loc k ( Y
page 121).X
Chec k th e coolan t temperature display in th e
instrumen t cluster.
The coolan t temperature mus t be belo w
10 4 ‡ (40 †) .X
Turn the SmartKey to position 0 ( Y
page 12 1)
in the ignition lock. X
Slowly turn cap C counter-clockwise and to
relieve excess pressure. X
Turn cap C further counter-clockwise and
remove it.
If the coolant is at the level of marker bar

during operation is approximately 266 ‡
(130 †).
The antifreeze concentrate/corrosion inhibitor
concentration in the engine cooling system
should: R
be at least 50%. This will protect the engine
cooling system against freezing down to
approximately -35 ‡ (-37 †) R
not exceed 55% (antifreeze protection down
to -49 ‡[ -45 †]) . Otherwise , hea t will no t be
dissipated as effectively
Mercedes-Ben z recommends a coolan t or cor-
rosio n inhibitor/antifreez e concentrat e in
accordance wit h
MB Specification s fo r Servic e Products 310. 1.
i When the vehicle is first delivered, it is filled
with a coolant mixture that ensures adequate
antifreeze and anti-corrosion protection.
i The coolant is checked with every mainte-
nance interval at a qualified specialist work-
shop.
Filling capacities Model Capacity
Mercedes ‑ AMG
vehicles Approx. 12.6 US qt
(11.9 l)
Al l ot her models
Approx. 8.2 US qt
(7.8 l)
Windshield washer system
Important safety notes
G WARNING
Windshield washer concentrate could ignite if
it comes into contact with hot engine compo-
nents or the exhaust system. There is a risk of
fire and injury.
Make sure that no windshield washer con-
centrate is spilled next to the filler neck.
! Only MB SummerFit and MB WinterFit
washer fluid should be mixed together. The
spray nozzles may otherwise become
blocked.
Do not use distilled or de-ionized water. Other-
wise, the level sensor may give a false reading. When handling washer fluid, observe the impor-
tant safety notes on service products
( Y
page 309).
At temperatures above freezing: X
Fill the washer fluid reservoir with a mixture of
water and windshield washer fluid, e.g. MB
SummerFit.
Add 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 windshield washer fluid, e.g. MB Sum-
merFit or MB WinterFit, to the washer fluid all
year round.
Climate control system refrigerant
Important safety notes The climate control system of your vehicle is fil-
led with refrigerant R ‑ 134a.
The instruction label regarding the refrigerant
type used can be found on the left, on the under-
side of the hood.
! Only the refrigerant R ‑ 134a and the PAG oil
approved by Mercedes-Benz may be used.
The approved PAG oil may not be mixed with
any other PAG oil that is not approved for
R-134a refrigerant. Otherwise, the climate
control system may be damaged.
Service work, such as refilling with refrigerant or
replacing component parts, may only be carried
out by a qualified specialist workshop. All appli-
cable regulations, as well as SAE standard J639,
must be adhered to.
Always have work on the climate control system
carried out at a qualified specialist workshop.Service products and filling capacities 313
Technical data Z