Page 209 of 386

05 Comfort and driving pleasure
Climate system
05
* Option/accessory, for more information, see Introduction.207
Climate system controls
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. 45° F (7° C). Activate/deactivate this function in the MY CAR menu system, under
Settings
Climate settingsAuto start driver seat
heater.
Heated rear seats*
Heat control for the outboard seating posi- tions is done in the same way as for the frontseats.
Blower controlTurn the control clockwise toincrease or counterclockwiseto decrease the blowerspeed. If AUTO is selected,
blower speed will be regula-ted automatically and thiswill override manual adjust-
ment.
NOTE
If the blower is turned off completely, the air conditioning is disengaged, which mayresult in fogging on the windows.
Page 210 of 386

05 Comfort and driving pleasure
Climate system
05
208
Air distribution
Manual air distribution—defroster
Manual air distribution—dashboard air vents
Manual air distribution—floor
The figure consists of three buttons. When a button is pressed, the corresponding figurewill appear in the display with an arrow indi-cating which manual air flow has beenselected (see the following illustration). Seealso the air distribution chart on page 211.
Air distribution is shown in the center console display
AutoThe function automatically regulates cooling, heating,blower speed, recirculation,and air distribution to main-tain the chosen temperature.If you select one or moremanual functions, the other
functions continue to be controlled automati-cally. The air quality sensor is engaged and allmanual settings 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.
Temperature controlThe temperatures on the driver and passenger sidescan be set separately. Whenthe vehicle is started, themost recent setting isresumed.
NOTE
Heating or cooling cannot be speeded up by selecting a higher/lower temperaturethan the actual temperature required.
Page 211 of 386

05 Comfort and driving pleasure
Climate system
05
}}
* Option/accessory, for more information, see Introduction.209
A/C – ON/OFFWhen the indicator light in the 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 is selected, the air condi-tioning system is set for maximum blowerspeed and dehumidifies the cabin as quicklyas possible.Max. defroster and electrically heated windshield*
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 and front 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 1
. 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.
1
If a "C" appears in the rear-view mirror when the button is pressed, the compass* has to be recalibrated, see page 111.
Page 212 of 386

05 Comfort and driving pleasure
Climate system
05
210* Option/accessory, for more information, see Introduction.
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 will switch on (ifnot already on and if the passenger com-partment blower is not turned off) todehumidify the air in the passenger com-partment. Air conditioning can beswitched off by pressing the
AC button.
• Recirculation will not function whiledefrost is engaged.
The climate system will return to its previous settings when the defroster/windshield heat-ing function is switched off. See also page 109 for additional information.
Recirculation/air quality system
RecirculationThis function can be used to shut out exhaust fumes,smoke, etc., from the pas-senger compartment. The airin the passenger compart-ment is then recirculated,i.e., no air from outside the
car is taken into the car when this function isactivated. The indicator light in the button willilluminate 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 page
197 for a description of the menu system.
NOTE
When Defroster is selected, recirculation is always deactivated.
Interior Air Quality System–IAQS*This system consists of a multifilter and an air quality sensor. The filter helps remove gasesand particles from the incoming air, therebyreducing the amounts of odors and contami-nants entering the vehicle. The air quality sen-sor detects increased levels of contaminantsin the outside air. When the air quality sensordetects contaminated outside air, the airintake closes and the air inside the passengercompartment is recirculated, i.e., no outsideair enters the vehicle. The filter also cleansrecirculated passenger compartment air.When the AUTO button is depressed the air
quality sensor is always engaged. Activate or deactivate this function in
Climate
settings
Interior air quality system.
NOTE
• The air quality sensor should always be engaged in order to obtain the bestair in the passenger compartment.
• Recirculation is limited in cold weatherto avoid fogging.
• If the insides of the windows start fog-ging, disengage the air quality sensor.Use the defroster function to increaseairflow to the front, side, and rear win-dows.
Page 213 of 386

05 Comfort and driving pleasure
Climate system
05
211
Air distribution table
Air distributionUseAir distributionUse
Air to windows. Some air flows from the dashboard airvents. The air is not recircula-ted. Air conditioning is alwaysengaged.To remove de-fog/de- ice the front side win-dows and windshieldquickly.Air to the floor and windows. Some airflows from the dash-board air vents.To ensure comfortable conditions and good de-fogging in cold or humidweather.
Air to windshield and side win- dows. Some air flows from theair dashboard vents.In cold or humid weather (blowerspeed should bemoderate to high).Air to floor and from dashboard air vents.In sunny weather with cool outside tempera-tures.
Airflow to windows and from dashboard air vents.To ensure good com- fort in warm, dryweather.Air to floor. Some air flows to the dashboardair vents and windows.To warm or cool the feet.
Airflow to the head and chest from the dashboard air vents.To ensure efficient cooling in warmweather.Airflow to windows, from dashboard airvents and to the floor.To cool the feet or pro- vide warmer air to theupper body in coldweather or hot, dryweather.
Page 214 of 386

05 Comfort and driving pleasure
Trip computer
05
212
Introduction
The content and appearance of the trip com- puter varies depending on whether the vehi-cle is equipped with an analog or digital
instrument panel. The instrument panel illuminates as soon as the vehicle is unlocked and trip computer set-tings can be made. If none of the trip com-puter's controls are used within 30 secondsafter the driver's door has been opened, theinstrument panel lighting will go out and thetrip computer cannot be used again until: • the ignition is put in mode II1
• the engine is started
NOTE
If a warning message appears while you are using the trip computer, this messagemust be acknowledged in order to returnto the trip computer function. Acknowl-edge a message by pressing
OK.
Trip computer in models with an analog instrument panel
The trip computer has two different menu groups: •
Trip computer functions
• Trip computer information headings in the instrument panel
Information display and controls
OK
–press to access the trip computer's
functions or acknowledge/confirm/erase
a message
Thumb wheel –turn to access the list of
trip computer information headings and
to scroll among the alternatives
RESET –press to cancel/reset/exit a func-
tion after a selection has been made
FunctionsTo open and make settings in the trip com- puter functions:
1. Ensure that none of the trip computer controls are being used in a command sequence; reset them by pressing RESET
twice.
2. Press OK to open the list of functions.
3. Use the thumb wheel to scroll among the
functions and select/confirm your choiceby pressing OK.
4. After completing your selection, exit by pressing RESET twice.
The following table lists the analog trip com-puter's functions:
1 See page 87 for information about the various ignition modes.
Page 215 of 386

05 Comfort and driving pleasure
Trip computer
05
}}
213
FunctionDescription
Digital speed – km/h – mph– NoneThis displays the vehicle's speed digitally in the center of the instrument panel
• Open by pressing
OK, scroll using the thumb wheel, confirm by pressing OK and exit by pressing
ENTER .
Trip comp. opt.
–
Distance to empty
– Fuel consumption
– Average speed
– Trip odometer T1 and total dist.
– Trip odometer T2 and total dist.
Selections among the trip computer information headings are made here. The symbols that have already been selected have a check mark and are displayed in white. Those not selected are not checked and are
displayed in gray:
1. Open the function by pressing OK and scroll to the desired heading using the thumb wheel.
2. Confirm by pressing OK. The symbol will change colors from gray to white and will be checked.
3. Continue this procedure or exit by pressing RESET.
Service statusShows the number of months and mileage until the next scheduled service.
Messages (##)For additional information, see page 195.
Information headingsAny of the information headings in the follow- ing table can be displayed. To do so:
1. Ensure that none of the trip computer
controls are being used in a command sequence; reset them by pressing RESET
twice. 2. Turn the
thumb wheel to begin display-
ing the information headings. Stop on thedesired heading.
3. See the table for an explanation of the heading or the actions that can be taken.
Page 216 of 386

05 Comfort and driving pleasure
Trip computer
05
214
Information headings in the instrument panelDescription
Trip odometer T1 and total dist.•Press and hold
RESET to reset trip odometer T1.
Trip odometer T2 and total dist.•Press and hold
RESET to reset trip odometer T2.
Distance to emptySee Distance to empty on page 216.
Fuel consumptionCurrent fuel consumption.
Average speedPress and hold RESET to reset Average speed.
-No information will be displayed. This also indicates the beginning/end of the list of infor- mation headings.
Scroll among the trip computer information headings at any time by turning the thumb
wheel until the desired heading is displayed.
Trip computer in models with a digital instrument panel
The trip computer has two different menu groups:
• Trip computer functions
• Trip computer information headings in the instrument panel
Information displays and controls
OK
–press to access the trip computer's
functions or to activate a selection
Thumb wheel –turn to access the list of
trip computer information headings and
to scroll among the alternatives
RESET –press to cancel/reset/exit a func-
tion after a selection has been made
FunctionsTo open and make settings in the trip com- puter functions:
1. Ensure that none of the trip computer controls are being used in a command sequence; reset them by pressing RESET
twice.
2. Press OK to open the list of functions.