
04 Climate
04
130* Option/accessory, for more information, see Introduction.
Heated seats
The front seat heating has three levels to increase comfort for the driver and passengerin cold weather. The rear outboard seat heating has three lev- els to increase comfort for the passengers incold weather.
Heated front seats*
The current seat temperature setting is shown in the center console display
Press the lower section of the button repeatedly untilthe desired number of indi-cator lights illuminate: Highest heat level – three indicator lights.
Medium heat level – two indicator lights.
Lowest heat level – one indicator light. If no indicator lights are illuminated, the seat heating is switched off. Seat heating will automatically switch off when the engine is switched off.
Starting the seat heating automaticallyThis setting starts heating the driver's seat (at the highest level) automatically when theengine is started if the ambient temperature isbelow approx. 50° F (10° C). Activate/deactivate this function in the MY CAR menu system, under
Settings
Climate settingsAuto start driver seat
heater.
Heated rear seats* 1
Heat control for the outboard seating posi- tions is done in the same way as for the frontseats.
Related information
•
Climate – general information (p. 125)
• Electronic climate control (ECC) (p. 129)
1
Not available on models equipped with the optional integrated booster cushions

04 Climate
04
131
Temperature and blower control
When the vehicle is started, the most recent setting is resumed. The blower should always be activated to help avoid condensation and fogging on thewindows.
Temperature controlThe temperatures on thedriver and passenger sidescan be set separately.
NOTE
Heating or cooling cannot be speeded up by selecting a higher/lower temperaturethan the actual temperature required.
Blower controlTurn the control clockwise to increase or counterclockwiseto decrease the blowerspeed. If AUTO (p. 131) is
selected, blower speed willbe regulated automaticallyand this will override manual
adjustment.
NOTE
If the blower is turned off completely, the air conditioning is disengaged, which mayresult in fogging on the windows.
Related information
• Climate – general information (p. 125)
• Electronic climate control (ECC) (p. 129)
• Air conditioning (p. 132)
• Climate – sensors (p. 125)
Automatic climate control
The Auto function automatically controls tem- perature (p. 131), air conditioning (p. 132),blower speed (p. 131), recirculation (p. 134)and air distribution (p. 127).
If you select one or moremanual functions, the otherfunctions continue to becontrolled automatically. Theair quality (p. 126) sensor isengaged and all manual set-tings are switched off when
AUTO is pressed. The display shows
AUTO
CLIMATE.
Blower speed in automatic mode can be set under
Climate settingsAutomatic blower
adjustment
. Choose between Low, Normalor High.
NOTE
Selecting the lowest blower speed may increases the risk of fog forming on thewindows.
Related information
• Climate – general information (p. 125)

04 Climate
04
132* Option/accessory, for more information, see Introduction.
Air conditioning
The air conditioning function cools and dehu- midifies the air in the passenger compart-ment.
When the indicator light inthe button is on, the air con-ditioning is controlled auto-matically. This cools/heatsand dehumidifies the incom-ing air. When the indicatorlight in the button is off, the
air conditioning is disengaged. Other func-tions are still controlled automatically. Whenmaximum defroster (p. 132) is selected, theair conditioning system is set for maximumblower speed and dehumidifies the cabin asquickly as possible.
Related information
• Climate – general information (p. 125)
• Automatic climate control (p. 131)
Max. defroster and electrically heated windshield*
The heated windshield and max. defroster functions are used to clear the windshield andfront side windows of condensation and iceas quickly as possible.
The selected settings are shown in the center console display
Electrical heating*
Max. defroster
Models
without an electrically heated wind-
shield • Press the button once to start defrosting/de-icing the windshield andfront side windows. The indicator light (2)in the defroster button illuminates whenthe function is active.
• Press the button twice to switch off thedefroster (the indicator light will switchoff).
Models with an electrically heated wind-
shield*
• If this feature is switched off, press thebutton once to start heating the wind- shield 2
. Symbol (1) will illuminate in the
center console display.
• Press the button twice to start both the defroster and the windshield heating.Symbols (1) and (2) will illuminate in thecenter console display.
• If these features are on, press the buttonto switch them off. The symbols will nolonger be displayed.
2
If a "C" appears in the rear-view mirror when the button is pressed, the compass* has to be recalibrated, see Digital compass* (p. 105).

04 Climate
04
}}
* Option/accessory, for more information, see Introduction.133
NOTE
• Triangular areas at the far sides of the windshield are not heated electricallyand will take slightly longer todefrost/de-ice.
• The heated windshield may affect theperformance/range of e.g., transpond-ers used to automatically pay highwaytolls or other communication equip-ment.
The following occurs when the defroster/ windshield heating functions have been acti-vated: •
Blower speed increases automatically and the air conditioning (p. 132) willswitch on (if not already on and if the pas-senger compartment blower is not turnedoff) to dehumidify the air in the passengercompartment. Air conditioning can beswitched off by pressing the
AC button.
• Recirculation (p. 134) will not functionwhile defrost is engaged.
The climate system will return to its previous
settings when the defroster/windshield heat- ing function is switched off. See also Heated windshield*, rear window and door mirror defrosters (p. 104) for addi-tional information.
Related information
• Climate – general information (p. 125)
• Automatic climate control (p. 131)
Air distribution – function
The air distribution function consists of three buttons.
Manual air distribution—defroster
Manual air distribution—dashboard air vents
Manual air distribution—floor
When a button is pressed, the corresponding figure will appear in the display with an arrowindicating which manual air flow has beenselected (see the following illustration). Seealso the air distribution chart (p. 135).

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04 Climate
04
134
Air distribution is shown in the center console display
Related information
•Climate – general information (p. 125)
• Air distribution – general (p. 127)
• Air distribution – recirculation (p. 134)
Air distribution – recirculation
Recirculation can be used to shut out exhaust fumes, smoke, etc., from the passenger com-partment.
The air in the passengercompartment is then recircu-lated, i.e., no air from outsidethe car is taken into the carwhen this function is acti-vated. The indicator light inthe button will illuminate
when recirculation is selected. If the air in the car recirculates for too long, there is a risk of condensation forming on theinsides of the windows, especially in winter.
TimerThe timer function minimizes the risk of fog- ging, or stale air when the recirculation func-tion is selected by automatically switching offthe function after a certain length of time,depending on the ambient temperature. Acti-vate/deactivate the function under
Climate
settings
Recirculation timer. See My Car
– introduction (p. 76) for a description of the menu system.
NOTE
When Defroster is selected, recirculation is always deactivated.
Related information
• Climate – general information (p. 125)
• Air distribution – general (p. 127)
• Air distribution – function (p. 133)
• Air distribution – table (p. 135)

08 Starting and driving
08
* Option/accessory, for more information, see Introduction.249
Switching off the engine
Switch off the engine by pressing the START/
STOP ENGINE button.
If the gear selector is not in the P position or
if the vehicle is moving, press the START/
STOP ENGINE button twice or press and
hold it in until the engine switches off.
Related information
• Ignition modes (p. 79)
Engine Remote Start (ERS)* – introduction
ERS is a feature that makes it possible to remotely start the engine using the remotekey to cool or heat the passenger compart-ment before driving. The climate/ and infotainment systems will start using the same settings as when theengine was switched off. When the engine is started using ERS, it will run for a maximum of 15 minutes beforeautomatically switching off again. After 2 ERSstarts, the engine must be started in the nor-mal way before ERS can be used again.
NOTE
•Always adhere to applicable State, Province and/or Local laws regardingengine idling when using ERS.
• The service life of the remote key'sbattery is affected by ERS use. If thisfeature is used frequently, the batteryshould be replaced once a year, seeRemote key – replacing the battery(p. 157).
WARNING
Keep the following in mind before using ERS:
• The vehicle should be in view.
• The vehicle should be unoccupied.
• The vehicle must not be parked indoors or in an enclosed area.Exhaust fumes are harmful to thehealth.
Related information
•
Engine Remote Start (ERS)* – starting the engine (p. 250)
• Engine Remote Start (ERS)* – switchingoff the engine (p. 250)

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08 Starting and driving
08
258* Option/accessory, for more information, see Introduction.
Auto-stopping the engineNormally, when Start/Stop is activated and the brakes are applied until the vehicle comesto a standstill, the engine will auto-stop auto-matically if the driver keeps the brake pedal
depressed .
To remind the driver that the enginehas been auto-stopped, theStart/Stop symbol will illuminate inthe instrument panel and remain on
until the engine restarts.
If the ECO function* (ECO* (p. 262)) is activated, theengine may auto-stop beforethe vehicle comes to a com-plete standstill.
Auto-starting the engineThe engine restarts as soon as the driver releases the brake pedal.
Deactivating Start/StopIn certain situations (e.g., driving in heavy, stop-and-gotraffic), it may be preferableto deactivate Start/Stop. This is done by pressing the button in the center console.
The indicator light in the button will go out. Start/Stop will remain deactivated until the button is pressed again or until the engine isswitched off and restarted by the driver.
Related information
• Start/Stop – introduction (p. 257)
• Start/Stop – settings (p. 260)
• Start/Stop – Auto-stop exceptions (p. 258)
• Start/Stop – Auto-start exceptions(p. 259)
• Start/Stop – Hill Start Assist (HSA)(p. 257)
• Start/Stop – symbols and messages(p. 261)
Start/Stop – Auto-stop exceptions
In certain situations or conditions, the engine may not auto-stop
when the vehicle comes
to a standstill, such as if:
Condition/situation
The vehicle's speed has not reached a speed of approx. 5 mph (8 km/h) after themost recent auto-start or after the driverhas started the engine.
The driver unbuckles his/her seat belt.
The main battery's charge is below the minimum level.
The engine has not reached its normal operating temperature.
The ambient temperature is below approx. 25°F (-4°C) or above approx. 85°F (30°C).
The windshield's heating function* is acti- vated.
The climate system cannot keep the desired settings in the passenger compart-ment; the blower will operate at highspeed.
The vehicle is backing up.
The main battery's temperature is below freezing or too high.

08 Starting and driving
08
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* Option/accessory, for more information, see Introduction.259
Condition/situation
The driver is turning the steering wheel hard.
The road's incline is very steep.
A trailer's electrical system is connected to the vehicle.
The hood has been opened A
.
The transmission has not reached its nor- mal operating temperature.
Atmospheric pressure is below a level equivalent to an altitude of approx. 4,900–8,200 ft (1500–2500 m) above sea level.The actual pressure is also affected by cur-rent weather conditions.
The Adaptive Cruise Control's* Queue Assist feature is activated.
The gear selector is in the SB
or " +/–" posi-
tion.
A Certain engines only
B Sport mode (where applicable)
Related information
• Start/Stop – introduction (p. 257)
• Start/Stop – function (p. 257)
• Start/Stop – settings (p. 260)
• Start/Stop – Auto-start exceptions (p. 259) •
Start/Stop – Hill Start Assist (HSA)(p. 257)
• Start/Stop – symbols and messages(p. 261)
Start/Stop – Auto-start exceptions
In certain situations or conditions, the engine may auto-start
even though the driver is still
pressing the brake pedal, such as if:
Condition/situation
Condensation forms on the windows.
The climate system cannot keep the desired settings in the passenger compart-ment.
Electrical current consumption is tempo- rarily high or the main battery's charge isbelow the minimum level.
The brake pedal is pumped repeatedly.
The hood has been opened A
.
The vehicle begins to move or increases speed slightly (if the engine auto-stoppedbefore the vehicle was at a standstill (seeECO* (p. 262))).
The driver unbuckles his/her seat belt while the gear selector is in the D or N positions.
The steering wheel is turned A
.