Page 121 of 360

Installing th
ewiper blades X
Positio nnew wiper blade 001Awith
recess 0024on lug 001E.
X Fold wiper blade 001Ain the direction of
arrow 0023ontot he wiper arm, until retaining
clips 0010engage in bracket 0021.
X Make sure that wiper blade 001Ais seated
correctly.
X Fold the wiper arm back ontot he
windshield.
Replacing the rear window wiper blade Removing
awiper blade X
Remove the SmartKey from the ignition
lock.
X Fold wiper arm 001Aaway from the rear
window until it engages.
X Position wiper blade 0010atar ight angle to
wiper arm 001A. X
Hold wiper arm 001Aand press wiper
blade 0010in the direction of the arrow until
it releases.
X Remove wiper blade 0010.
Installing awiper blade
X Place new wiper blade 0010ontow iper
arm 001A.
X Hold wiper arm 001Aand press wiper
blade 0010in the opposit edirection to the
arrow until it engages.
X Make sure that wiper blade 0010is seated
correctly.
X Position wiper blade 0010parallel to wiper
arm 001A.
X Fold wiper arm 001Aback ont othe rear
window. Windshield wipers
119Lights and windshield wipers Z
Page 122 of 360
Problems with the windshield wipers
Problem Possible causes/consequences and
000B Solutions
The windshield wipers
are jammed. Leaves or snow, for example, may be obstructing the windshield
wiper movement.T
he wiper motor has been deactivated.
X For safety reasons, you should remove the SmartKey from the
ignition lock.
X Remove the cause of the obstruction.
X Switch the windshield wipers back on. The windshield wipers
fail completely. The windshield wiper drive is malfunctioning.
X
Select another wiper speed on the combination switch.
X Have the windshield wipers checked at aqualified specialist
workshop. The windshield washer
fluid from the spray
nozzles no longer hits
the center of the
windshield. The spray nozzles are misaligned.
X
Have the spray nozzles adjusted at aqualified specialist
workshop. 120
Windshield wipersLights and windshield wipers
Page 123 of 360
Useful information
............................122
Overview of climat econtrol sys-
tems ................................................... 122
Operating the climat econtrol sys-
tems ................................................... 126
Setting the air vents .........................133 121Climat
econtrol
Page 124 of 360

Useful information
i This Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
possible. Please not ethat your vehicle may
not be equipped with all features
described. This also applies to safety-
related system sand functions.
i Read the information on qualified
specialist workshops: (Y page 25).Overview of climat
econtrol systems Important safet
ynotes
Observ ethe settings recommende donthe
following pages. The windows could
otherwise fog up.
To preven tthe 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
dehumidification function
R switch on the defrost windshield function
briefly, if required
The automatic climate control regulates the
temperature and the humidity of the vehicle
interior and filters out undesirable
substances from the air.
Automatic climate control/dual-zone
automatic climate control is only operational
when the engine is running. Optimum
operation is only achieved with the side
windows and panorama roof with power tilt/
sliding panel closed.
The residual heat function can only be
activated or deactivated with the ignition
switched off (Y page 132).
i Ventilate the vehicle for abrief period
during warm weather, e.g. using the
convenience opening feature (Y page 84).This will speed up the cooling process and
the desired vehicle interior temperature
will be reached more quickly.
i The integrated filter filters out most
particles of dust and soot and completely
filters out pollen. With dual-zonea utomatic
climate control, gaseous pollutantsa nd
odors will also be reduced. Aclogged filter
reduces the amoun tofair 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 .Asitdepends on
environmental conditions, e.g. heavy air
pollution, the interval may be shorter than
stated in the Maintenance Booklet.
i It is possible that the dehumidification
function of the climate control system may
be activated automaticallyanh our after the
SmartKey has been removed. The vehicle
is then ventilated for 30 minutes. 122
Overview of climatec
ontrol systemsClimatecontrol
Page 125 of 360

Control panel for climat
econtrol 001A
To set th etem peratur e(Ypage 128)
0010 To defros tthe windshield (Y page 130)
0023 To set the air distribution (Y page 129)
0021 To activate/deactivate air-recirculation mode (Y page 132)
001E To set the airflow (Y page 129)
0024 To switch cooling with air dehumidification on/off (Y page 126)
0007 To switch the rear window defroster on/off (Y page 130)Notes on using climate control
Automatic climate control The following contains notes and
recommendations on optimum use of the
automatic climate control.
R
Switch on the air-conditioning system by
turning control knob 001Eclockwise to the
desired position (except position 0).
R Set the temperature to 22 †.
R Recommendation for preventing
fogged up windowsw ith low outside
temperatures or rain: switch0002on for
the air distribution and switch 0018and
000B off if possible (Y page 129).
In air-recirculation mode, switch 0019off
(Y page 132). Set airflow control
001Etoas ettingb etween
3 and 6(Ypage 129).
R Recommendation for rapid cooling or
heating of the vehicle interior: briefly set
airflow control 001Etoas ettingb etween 3
and 6(Ypage 129).
R Recommendation for aconstant
vehicle interior temperature: set airflow
control 001Etoas ettingb etween 1and
3(Y page 129).
R Recommendation for air distribution in
the winter: set000B and
0002(Y page 129).
Recommendation for air distribution in
the summer: set0018 or0018 and
0002(Y page 129).
R Only use the "Windshield defrosting"
function briefly until the windshield is clear
again. Overview of climate control systems
123Climatecontrol
Page 126 of 360
R
Only use air-recirculation mode briefly,e .g.
if there are unpleasant outside odors or
when in atunnel. The windows could
otherwise fog up, since no fresh air is drawn
into the vehicle in air-recirculation mode.
R Vehiclesw ith COMAND: if you change the
settings of the climate control system, the
climate status displaya ppears for three
seconds at the bottom of the screen in the
COMAND display. See also the separate
COMAND operating instructions. You will
see the current settings of the various
climate control functions.
ECO start/stop function During automatic engine switch-off, the ECO
start/stop function only operates at a
reduced capacity. If you require the full
climate control output, you can switch off the
ECO start/stop function by pressing the ECO
button (Y page 140). 124
Overview of climatec
ontrol systemsClimatecontrol
Page 127 of 360

Control panel for dual-zone automatic climat
econtrol 001A
To set th etem perature, left (Y page 128)
0010 To set climate control to automatic (Y page 128)
0023 To defros tthe windshield (Y page 130)
0021 To increase the airflow (Y page 129)
001E To set the air distribution (Y page 129)
0024 Display
0007 To activate/deactivate air-recirculation mode (Y page 132)
0008 To switch climate control on/off (Y page 126)
0009 To set the temperature, right (Y page 128)
0016 To switch the residual heat function on/off (Y page 132)
001D To switch cooling with air dehumidification on/off (Y page 126)
0004 To reduce the airflow (Y page 129)
000B To switch the rear window defroster on/off (Y page 130)
001C To switch the ZONE function on/off (Y page 129)Notes on using dual-zone automatic
climate control
Automatic climate control The following contains instructions and
recommendations to enable you to get the
most out of your automatic climate control.
R Activate climate control using the 000Cand
0001 buttons. The indicator lamps in the
000C and0001 buttons light up.
R Set the temperature to 22 †. R
Only use the "Windshield defrosting"
function briefly until the windshield is clear
again.
R Only use air-recirculation mode briefly, e.g.
if there are unpleasant outside odors or
when in atunnel. The windows could
otherwise fog up, since no fresh air is drawn
into the vehicle in air-recirculation mode.
R Use the ZONE function to adopt the
temperature settings on the driver's side Overview of climate control systems
125Climatecontrol
Page 128 of 360

for the front-passenger side as well. The
indicator lamp in the
000Dbutton goes out.
R Use the residualh eatfunction if you want
to heat or ventilat ethe vehicl einterior
when the ignition is switched off. The
residual heat function can only be activated
or deactivated with the ignition switched
off.
R Vehicles with COMAND: if you change the
settings of the climate control system, the
climate status display appears for three
seconds at the bottom of the screen in the
COMAND display. See also the separate
COMAND operatin ginstructions. You will
see the curren tsettings of the various
climate control functions.
ECO start/stop function Durin
gautomatic engin eswitch-off ,the ECO
start/stop function only operates at a
reduced capacity. If you require the full
climate control output, you can switch off the
ECO start/stop function by pressing the ECO
button (Y page 140). Operating the climat
econtrol
systems Switching climat
econtrol on/off
General notes When the climate control is switched off, the
air supply and air circulation are also
switched off. The windows could fog up.
Therefore, switch off climate control only
briefly Automatic climat
econtrol X
Turn the SmartKey to position 2in the
ignition lock (Y page 137).
X To switch on: turn control001Eclockwise to
the desired position (except position 0)
(Y page 123).
X To switch off: turn control001Ecounter-
clockwise to position 0(Ypage 123).
Dual-zone automatic climat econtrol X
Turn the SmartKey to position 2in the
ignition lock (Y page 137).
X To switch on: press the000Cbutton.
The indicator lamp in the 000Cbutton lights
up. Airflow and air distribution are set to
automatic mode.
or
X Press the 0007button.
The indicator lamp in the 0007button goes
out. The previously selected settings are
restored.
X To switch off: press the0007button.
The indicator lamp in the 0007button lights
up.
i Dual-zone automatic climate control:
switch on climate control primarily using
the 000C button. Activating/deactivating cooling with
air dehumidification
General notes If you deactivat
ethe "Cooling with air-
dehumidification "function ,the air inside the
vehicle will not be cooled. The air inside the
vehicle will also not be dehumidified. The
windows can fog up more quickly. Therefore,
only deactivat ethe "Cooling with air-
dehumidification "function briefly.
The "Cooling with air dehumidification"
function is only available when the engin eis
running. The air inside the vehicle is cooled 126
Operating thec
limatecontrol systemsClimatecontrol