▷The parking assistant is activated.▷Stop-and-go traffic.▷Selector lever in selector lever position N,
M/S or R.▷Use of fuel with high ethanol content.
Starting the engine
The engine starts automatically under the fol‐
lowing conditions:
▷Steptronic transmission:
By releasing the brake pedal.
After the engine starts, accelerate as usual.
Safety mode
After the engine switches off automatically, it
will not start again automatically if any one of
the following conditions are met:
▷The driver's safety belt is unbuckled and
the driver's door is open.▷The hood was unlocked.
Some indicator lights light up for a varied
length of time.
The engine can only be started via the Start/
Stop button.
Functional limitations
Even if driving off was not intended, the deacti‐
vated engine starts up automatically in the fol‐
lowing situations:
▷Excessive warming of the car's interior
when the cooling function is switched on.▷The steering wheel is turned.▷Steptronic transmission: change from se‐
lector lever position D to R, N or M/S.▷Steptronic transmission: change from se‐
lector lever position P to N, D, R or M/S.▷Fogging of the windows when the auto‐
matic climate control is switched on.▷Vehicle battery is heavily discharged.▷Excessive cooling of the car's interior when
the heating is switched on.Activating/deactivating the system
manually
Using the button
Press button.
▷LED comes on: Auto Start/Stop function is
deactivated.
The engine is started during an automatic
engine stop.
The engine can only be stopped or started
via the Start/Stop button.▷LED goes out: Auto Start/Stop function is
activated.
Switching off the vehicle during an
automatic engine stop
During an automatic engine stop, the vehicle
can be switched off permanently, e. g., when
leaving it.
1.Steptronic transmission: engage selector
lever position P.2.Press the Start/Stop button. The ignition is
switched off. The Auto Start/Stop function
is deactivated.3.Set the parking brake.
Engine start as usual via Start/Stop button.
Automatic deactivation
In certain situations, Auto Start/Stop function
is deactivated automatically for safety reasons
as if the driver were absent.
Seite 71DrivingControls71
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Climate controlVehicle features and options
This chapter describes all standard, country-
specific and optional features offered with the
series. It also describes features that are not
necessarily available in your car, e. g., due tothe selected options or country versions. This
also applies to safety-related functions and
systems. The respectively applicable country
provisions must be observed when using the
respective features and systems.
Air conditioner
1Vent settings2Cooling function3Air flow4Air flow display5Recirculated-air mode6Temperature7Seat heating, right 558Rear window defroster9Seat heating, left 55Climate control functions in detail
Switching the system on/off
Switching on
Press any button except▷Rear window defroster.▷Seat heating.Seite 144ControlsClimate control144
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Switch offPress and hold the left button until the
control switches off.
Temperature Turn the ring to set the desired
temperature.
Cooling function
The car's interior can only be cooled with the
engine running.
Press button.
The air will be cooled and dehumidi‐
fied and, depending on the temperature set‐ ting, warmed again.
Depending on the weather, the windshield and
side windows may fog up briefly when the en‐
gine is started.
The air conditioner produces condensation
water, refer to page 171, that will exit from be‐
low the car.
Recirculated-air mode You may respond to unpleasant odors or pollu‐
tants in the immediate environment by tempo‐
rarily suspending the supply of outside air. The
system then recirculates the air currently
within the vehicle.
Press button repeatedly to select an
operating mode:▷LED off: outside air flows in continuously.▷LED on, recirculated-air mode: the supply
of outside air into the vehicle is perma‐
nently blocked.
Recirculated air mode switches off automati‐
cally at low external temperatures after a cer‐
tain amount of time in order to avoid window
fogging.
With constant recirculated-air mode, the air
quality in the car's interior deteriorates and the
fogging of the windows increases.
If the windows fog over, switch off recircu‐
lated-air mode and increase the air flow, if
needed.
Air flow, manual Press the left or right side of the but‐
ton: decrease or increase air flow.
The intensity is indicated through LEDs. The
highest level is active when seven LEDs are lit.
The air flow from the air conditioner may be re‐
duced automatically to save battery power.
Manual air distribution Turn the wheel to select the de‐
sired program or the desired in‐ termediate setting.▷ Windows.▷ Upper body region.▷ Footwell.▷ Windows, upper body region, and foot‐
well.
Defrosts windows and removes
condensation
Direct the air distribution toward windows, in‐
crease the air flow and temperature, and, if
needed, use the cooling function.
Rear window defroster Press button.
The rear window defroster switches
off automatically after a certain period of time.
For permanent activation, press the button for
longer than 3 seconds. To deactivate, press
the button again.
Seite 145Climate controlControls145
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Microfilter
In external and recirculated air mode the mi‐
crofilter filters dust and pollen from the air.This filter should be replaced during scheduled
maintenance, refer to page 204, of your vehi‐
cle.
Automatic climate control
1Defrosts windows and removes condensa‐
tion2Temperature, left3AUTO program4Switching off the system5Air flow, AUTO intensity6Display7SYNC program8Maximum cooling9Temperature, right10Cooling function11Automatic recirculated-air control/recircu‐
lated-air mode12Seat heating, right 5513Vent settings14Seat heating, left 5515Interior temperature sensor — always keep
clear16Rear window defrosterClimate control functions in detail
Switching the system on/off
Switching on
Press any button except:▷SYNC program.▷Rear window defroster.▷Seat heating.Seite 146ControlsClimate control146
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Switch offPress button.
Temperature Turn the ring to set the desired
temperature.
The selected temperature is shown on the dis‐
play of the automatic climate control.
The automatic climate control reaches this
temperature as quickly as possible, if needed
by increasing the cooling or heating output,
and then keeps it constant.
Do not rapidly switch between different tem‐
perature settings. Otherwise, the automatic cli‐
mate control will not have sufficient time to ad‐
just the set temperature.
Cooling function The car's interior can only be cooled with the
engine running.
Press button.
The air will be cooled and dehumidi‐
fied and, depending on the temperature set‐ ting, warmed again.
Depending on the weather, the windshield and
side windows may fog up briefly when the en‐
gine is started.
The cooling function is switched on automati‐
cally with the AUTO program.
When using the automatic climate control,
condensation water, refer to page 171, devel‐
ops that exits underneath the vehicle.
Maximum cooling Press button.The system is set to the lowest temperature,
optimum air flow and air circulation mode.
Air flows out of the vents to the upper body re‐
gion. The vents need to be open for this.
The function is available above an external
temperature of approx. 32 ℉/0 ℃ and with the
engine running.
Adjust air flow with the program active.
AUTO program Press button.
Air flow, air distribution and tempera‐
ture are controlled automatically.
Depending on the selected temperature,
AUTO intensity program and outside influen‐
ces, the air is directed to the windshield, side
windows, upper body, and into the footwell.
The cooling function, refer to page 147, is
switched on automatically with the AUTO pro‐
gram.
At the same time, a condensation sensor con‐
trols the program so as to prevent window
condensation as much as possible.
Intensity of the AUTO program
With the AUTO program activated, the auto‐
matic intensity control can be changed.
Press the left or right side of the but‐
ton: decrease or increase the inten‐
sity.
The selected intensity is shown on the display
of the automatic climate control.
Automatic recirculated-air control/
recirculated-air mode
You may respond to unpleasant odors or pollu‐
tants in the immediate environment by tempo‐
rarily suspending the supply of outside air. The
system then recirculates the air currently
within the vehicle.Seite 147Climate controlControls147
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This filter should be replaced during scheduled
maintenance, refer to page 204, of your vehi‐
cle.
Ventilation
Front ventilation▷Lever for changing the air flow direction,
arrow 1.▷Thumbwheels for opening and closing the
vents continuously, arrows 2.
Adjusting the ventilation
▷Ventilation for cooling:
Direct vent in your direction when vehicle's
interior is too hot.▷Draft-free ventilation:
Adjust the vent to let the air flow past you.
Ventilation in the rear
▷Lever for changing the air flow direction,
arrow 1.▷Thumbwheel for continuous opening and
closing of the vents, arrow 2.
Parked-car ventilation
The concept The parked-car ventilation ventilates the vehi‐
cle interior and lowers its temperature, if
needed.
The system can be switched on and off at any
external temperature, either directly or by us‐
ing two preset reel-on times. It remains
switched on for 30 minutes.
Open the vents to allow air to flow out.
Switching on/off directly
On the Control Display:
1."Settings"2."Climate"3."Activate comf. ventilation"
The symbol on the automatic climate con‐
trol flashes if the system is switched on.
Preselecting the reel-on time
On the Control Display:
1."Settings"2."Climate"3."Timer 1:" or "Timer 2:"4.Set the desired time.
Activating the reel-on time
On the Control Display:
1."Settings"2."Climate"3."Activate timer 1" or "Activate timer 2"
The symbol on the automatic climate con‐
trol lights up when the reel-on time is acti‐
vated.
Seite 149Climate controlControls149
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CoolantVehicle features and optionsThis chapter describes all standard, country-
specific and optional features offered with the
series. It also describes features that are not
necessarily available in your car, e. g., due to
the selected options or country versions. This
also applies to safety-related functions and
systems. The respectively applicable country
provisions must be observed when using the
respective features and systems.
Information WARNING
With the engine hot and the cooling sys‐
tem open, coolant can escape and lead to
burns. There is risk of injuries. Only open the
cooling system with the engine cooled down.◀
WARNING
Additives are harmful and incorrect addi‐
tives can damage the engine. There is risk of
injuries and risk of property damage. Avoid the
contact of articles of clothing, skin or eyes with
additives. Do not swallow any additives. Use
suitable additives only.◀
Coolant consists of water and additives.
Not all commercially available additives are
suitable for the vehicle. Information about suit‐
able additives is available from a dealer’s serv‐
ice center or another qualified service center or
repair shop.
Coolant level
Overview
Depending on the engine installation, the cool‐
ant reservoir is located on the right side or the
left side of the engine compartment.Checking
There are yellow Min and Max marks in the
coolant reservoir.1.Let the engine cool.2.Turn the lid of the coolant reservoir slightly
counterclockwise to allow any excess
pressure to dissipate, then open it.3.Open the coolant reservoir lid.4.The coolant level is correct if it lies be‐
tween the minimum and maximum marks
in the filler neck.
Adding
1.Let the engine cool.2.Turn the lid of the coolant reservoir slightly
counterclockwise to allow any excess
pressure to dissipate, then open it.3.If the coolant is low, slowly add coolant up
to the specified level; do not overfill.Seite 202MobilityCoolant202
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Brake lights, brake force dis‐play 118
Brake pads, break-in 168
Braking, hints 170
Breakdown assistance 217
Break-in 168
Brightness of Control Dis‐ play 94
Bulb replacement 206
Bulb replacement, front 207
Bulb replacement, rear 211
Bulbs and lights 206
Button, Start/Stop 68
Bypassing, see Jump-start‐ ing 218
C
California Proposition 65 Warning 8
Camera-based cruise control, ACC 126
Camera lenses, care 225
Camera, rearview cam‐ era 138
Can holder, see Cu‐ pholder 162
Car battery 215
Car care products 223
Care, displays 225
Care, vehicle 223
Cargo 172
Cargo area 157
Cargo area, enlarging 158
Cargo area, storage compart‐ ments 163
Cargo floor panel 157
Cargo position, rear seat backrest 159
Cargo, securing 173
Cargo straps, securing cargo 173
Car key, see Remote con‐ trol 34
Carpet, care 224
Car wash 222 Catalytic converter, see Hot
exhaust system 169
CBS Condition Based Serv‐ ice 204
Center armrest 161
Center console 16
Central locking system 40
Central screen, see Control Display 18
Changes, technical, see Own Safety 7
Changing parts 206
Changing wheels 213
Changing wheels/tires 190
Chassis number, see vehicle identification number 10
Check Control 82
Checking the oil level elec‐ tronically 199
Children, seating position 64
Children, transporting safely 64
Child restraint fixing sys‐ tem 64
Child restraint fixing system LATCH 66
Child restraint fixing systems, mounting 65
Child safety locks 67
Child seat, mounting 65
Child seats 64
Chrome parts, care 224
Cigarette lighter 155
Cleaning displays 225
Climate control 144, 146
Clock 86
Closing/opening via door lock 39
Closing/opening with remote control 37
Closing the tailgate with no- touch activation 44
Cockpit 14
Combination switch, see Turn signals 73 Combination switch, see
Wiper system 74
Comfort Access 43
COMFORT program, Dy‐ namic Driving Control 124
Compact wheel, see Emer‐ gency wheel 213
Compartments in the doors 161
Compass 153
Compressor 192
Condensation on win‐ dows 148
Condensation under the vehi‐ cle 171
Condition Based Service CBS 204
Confirmation signal 46
ConnectedDrive 6
ConnectedDrive Services 6
Connecting electrical devi‐ ces 155
Continued driving with a flat tire 107 , 110
Control Display 18
Control Display, settings 93
Controller 19
Control systems, driving sta‐ bility 120
Convenient opening with the remote control 38
Coolant 202
Cooling function 145, 147
Cooling, maximum 147
Cooling system 202
Cornering lamp 99
Corrosion on brake discs 170
Cosmetic mirror 155
Courtesy lamps during un‐ locking 37
Courtesy lamps with the vehi‐ cle locked 38
Cruise control 132
Cruise control, active 126 Seite 233Everything from A to ZReference233
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