cooling MERCEDES-BENZ CLA 2017 Owners Manual

1, 2, 3 ...4ETS (Electronic Traction System)
see ETS/4ETS (Electronic Trac-
tion System)
4MATIC
Display message ............................ 213
4MATIC (permanent four-wheel
drive) .................................................. 159
12 V socket
see Sockets
AABS (Anti-lock Braking System)
Display message ............................ 189
Function/notes ................................ 60
Important safety notes .................... 60
Warning lamp ................................ .2 18
Accident
Automatic measures after an acci-
dent ................................................. 53
Activating media mode
General notes ................................ 232
Activating/deactivating cooling
with air dehumidification ................. 114
Active Brake Assist
Activating or deactivating .............. 182
Display message ............................ 194
Function/notes ................................ 61
ADAPTIVE BRAKE ................................. 66
Adaptive Damping System
Function/notes ............................ .1 59
Adaptive Highbeam Assist
Display message ............................ 202
Function/notes ............................ .1 01
Switching on/off ........................... 102
Additional speedometer ................... 184
Additives (engine oil) ........................ 312
Address book
see also Digital Operator's Man-
ual ................................................. .2 27
Adjusting the volume
Audio 20 ........................................ 228
COMAND ....................................... 228
Air bags
Deployment ..................................... 51
Display message ............................ 197 Front air bag (driver, front
passenger) ....................................... 45
Important safety notes .................... 44
Introduction ..................................... 44
Knee bag .......................................... 45
Occupant Classification System
(OCS) ............................................... 46
PASSENGER AIR BAG indicator
lamps ............................................... 40
Side impact air bag .......................... 45
Window curtain air bag .................... 46
Ai r vents
Important safety notes .................. 119
Rear ............................................... 119
Setting the center air vents ........... 119
Setting the side air vents .............. .1 19
Air-conditioning system
see Climate control
Alarm
ATA (Anti-Theft Alarm system) ......... 67
Switching off (ATA) .......................... 67
Switching the function on/off
(ATA) ................................................ 67
Alarm system
see ATA (Anti-Theft Alarm system)
AMG
Adaptive sport suspension sys-
tem ................................................ 158
Performance Seat ............................ 93
AMG adaptive sport suspension
system
General Information ....................... 158
AMG menu (on-board computer) ..... 185
AMG Performance exhaust sys-
tem ..................................................... 126
Anti-lock braking system
see ABS (Anti-lock Braking System)
Anti-Theft Alarm system
see ATA (Anti-Theft Alarm system)
Ashtray ............................................... 240
Assistance display (on-board com-
puter) ................................................. .1 82
Assistance menu (on-board com-
puter) ................................................. .1 82
ASSYST PLUS
Displaying a service message ....... .2 58
Driving abroad ............................... 2594
Index

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

Overview of climate control systems
General notes Observe the settings recommended on the fol-
lowing pages. The windows could otherwise fog
up.
To prevent the windows from fogging up: R
switch off climate control only briefly R
switch on air-recirculation mode only briefly R
switch on the cooling with air dehumidifica-
tion function R
switch on the defrost windshield function
briefly, if required
The air-conditioning system or dual-zone auto-
matic climate control regulates the temperature
and the humidity of the vehicle interior and fil-
ters undesirable substances from the air.
The air-conditioning system or dual-zone auto-
matic climate control can only be operated
when the engine is running. Optimum operation
is only achieved with the side windows and pan-
orama roof with power tilt/sliding panel closed.
If you start the engine using your smartphone,
the last selected climate control setting is reac-
tivated ( Y
page 122).
The residual heat function can only be activated
or deactivated with the ignition switched off
( Y
page 118). Always keep the ventilation flaps behind the
side trim panel in the cargo compartment clear
( Y
page 105). Otherwise the vehicle will not be
ventilated correctly.
i Ventilate the vehicle for a brief period during
warm weather, e.g. using the convenience
opening feature ( Y
page 82). This will speed
up the cooling process and the desired inte-
rior temperature will be reached more
quickly.
i The integrated filter filters out most parti-
cles of dust and soot and completely filters
out pollen. It also reduces gaseous pollutants
and odors. A clogged filter reduces the
amount of air supplied to the vehicle interior.
For this reason, you should always observe
the interval for replacing the filter, which is
specified in the Maintenance Booklet. As it
depends on environmental conditions, e.g.
heavy air pollution, the interval may be
shorter than stated in the Maintenance Book-
let.
i It is possible that under certain circumstan-
ces the residual heat function may be activa-
ted automatically an hour after the SmartKey
has been removed in order to dry the aut o-
mat ic climate control. The vehicle is then ven-
tilated for 30 minutes.Overview of climate control systems 109
Climate control

Problems with the "Cooling with air dehumidification" function Problem
Possible causes/consequences and P Solutions
The indicator lamp in the
Z button flashes
three times or remains
off. The "Cooling with air
dehumidification" func-
tion cannot be switched
on. Cooling with air dehumidification has been deactivated due to a mal-
function. X
Visit a qualified specialist workshop.
Setting climate control to automatic
General notes The automatic climate control function is only
available in conjunction with dual-zone auto-
matic climate control.
In automatic mode, the set temperature is main-
tained automatically at a constant level. The
system automatically regulates the temperature
of the dispensed air, the airflow and the air dis-
tribution.
The "Cooling with air dehumidification" function
is activated automatically in automatic mode.
Setting climate control to automatic X
Turn the SmartKey to position 2 in the ignition
lock ( Y
page 121).X
Set the desired temperature. X
To activate: press the X button.
The indicator lamp in the X button lights
up. Automatic air distribution and airflow are
activated. X
To switch to manual mode: press the O
or J button.
or X
Press the

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

The table shows which engine oils have been
approved for your vehicle.
Model MB-Freigabe or
MB-Approval
All models
229.5
Use only SAE 0W-40 or SAE 5W-40 engine oils
for Mercedes-AMG vehicles.
i MB approval is indicated on the oil contain-
ers.
Filling capacities The following values refer to an oil change
including the oil filter.
Model Capacity
Mercedes ‑ AMG vehicles
5.8 US qt (5.5 l)
All other models
5.9 US qt (5.6 l)
Additives
! Do not use any additives in the engine oil.
This could damage the engine.
Brake fluid
G WARNING
The brake fluid constantly absorbs moisture
from the air. This lowers the boiling point of
the brake fluid. If the boiling point of the brake
fluid is too low, vapor pockets may form in the
brake system when the brakes are applied
hard. This would impair braking efficiency.
There is a risk of an accident.
You should have the brake fluid renewed at
the specified intervals.
When handling brake fluid, observe the impor-
tant safety notes on service products
( Y
page 309).
The brake fluid change intervals can be found in
the Maintenance Booklet.
Only use brake fluid approved by Mercedes-
Benz in accordance with 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 Maintenance 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 add anti-
freeze. 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 BeVo 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 Maintenance Booklet.
Comply with the important safety precautions
for service products when handling coolant
( Y
page 309).
The coolant is a mixture of water and corrosion
inhibitor/antifreeze concentrate. It performs
the following tasks: R
Anti-corrosion protection R
Antifreeze protection R
Raising the boiling point
If the coolant has antifreeze protection down to
-35 ‡ (-37 †), the boiling point of the coolant312
Service products and filling capacities
Technical data

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