light MERCEDES-BENZ M-Class 2011 W164 Repair Manual

XInsert a suitable tool into the openings in
the cover. The directions of arrow =
and ? indicate the angle at which the tool
needs to be inserted in order to reach the
adjustment screws.XTurn both screws uniformly until the
vertical setting corresponds to :. Turn the
screws clockwise to adjust the headlamp
upwards and counterclockwise to adjust it
downwards.
Gradation:
R Screw at arrow =: 0.67˚ angle of
inclination
R Screw at arrow ?: 0.50˚ angle of
inclination
The left and right headlamp need to be
adjusted individually.
i If it is not possible to adjust the
headlamps accurately, have the
adjustment performed at an authorized
Mercedes-Benz Center.
Windshield wipers
Important safety guidelines
GWarning!
Wiper blades are components that are subject
to wear and tear. Replace the wiper blades
twice a year, preferably in the spring and fall.
Otherwise the windows will not be wiped
properly. As a result, you may not be able to
observe surrounding traffic conditions and
could cause an accident.
! Do not operate the windshield wipers
when the windshield is dry, as this could
damage the wiper blades. Moreover, dust
that has collected on the windshield/rear
window can scratch the glass if wiping
takes place when the windshield/rear
window is dry.
If it is necessary to switch on the windshield
wipers in dry weather conditions, always
use washer fluid when operating the
windshield wipers.
Switching the windshield wipers on/
off
Combination switch
1$ Windshield wipers off2Ä Intermittent wipe, low 133Å
Intermittent wipe, high 144°
Continuous wipe, slow5¯ Continuous wipe, fastBí Single wipe/ î To wipe the
windshield using washer fluidXSwitch on the ignition.XTurn the combination switch to the
corresponding position.
! Intermittent wiping with rain sensor: due
to optical influences and the windshield
becoming dirty in dry weather conditions,
the windshield wipers may be activated
inadvertently. This could then damage the
windshield wiper blades or scratch the
windshield.
For this reason, you should always switch
off the windshield wipers in dry weather.
In the Ä or Å position, the appropriate
wiping frequency is set automatically
according to the intensity of the rain. In
13 Rain sensor set to low sensitivity.
14 Rain sensor set to high sensitivity.Windshield wipers117Lights and windshield wipersBA 164.1 USA, CA Edition B 2011; 1; 2, en-USd2mskotVersion: 3.0.3.52010-04-21T17:25:06+02:00 - Seite 117Z

the Å position, the rain sensor is more
sensitive than in the Ä position, causing
the windshield wiper to wipe more frequently.
Intermittent wiping is interrupted when you
stop the vehicle and open a front door. This
prevents a person from being splashed
inadvertently when getting into or out of the
vehicle.
Intermittent wiping continues when all doors
are closed and
R you shift the automatic transmission to
drive position D or reverse gear R
or
R you change the wipe setting on the
combination switch.
i To prevent smearing on the windshield or
noise when wiping, wipe the windshield
occasionally with washer fluid.
Switching the rear window wiper on/
off
Combination switch
:è Switch2ô To wipe with washer fluid3I To switch on intermittent wiping40 To switch off intermittent wiping5ô To wipe with washer fluidXTurn the key to position 1 or 2 in the ignition
lock.XTurn switch : on the combination switch
to the corresponding position.
When the rear window wiper is switched on,
the icon appears in the instrument cluster.
Replacing the wiper blades
Important safety guidelines
GWarning
For safety reasons, switch off the windshield
wipers and remove the key from the ignition
lock before changing the wiper blades
(vehicles with KEYLESS-GO: make sure that
the on-board electronics are in state 0).
Otherwise, the wiper motor could be switched
on suddenly and cause injury.
! To avoid damaging the wiper blades,
make sure that you touch only the wiper
arm of the wiper.
! Never open the hood if a windshield wiper
arm has been folded away from the
windshield.
Never fold a windshield wiper arm without
a wiper blade back onto the windshield.
Hold the windshield wiper arm firmly when
you change the wiper blade. If you release
the windshield wiper arm without a wiper
blade and it falls onto the windshield, the
windshield can be damaged by the force of
the impact.
Mercedes-Benz recommends that you have
the wiper blades replaced by a qualified
specialist workshop, e.g. at an authorized
Mercedes-Benz Center.
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Replacing the windshield wiper blades
Removing the wiper blades
XRemove the SmartKey from the ignition
lock.XFold the wiper arm away from the
windshield.XPress both release clips ;.XFold wiper blade : in the direction of
arrow = away from wiper arm ?.XRemove wiper blade : in the direction of
arrow A.
Installing the wiper blades
XPosition the new wiper blade : with
recess B on lug A.XFold wiper blade : in the direction of
arrow = onto the wiper arm, until retaining
clips ; engage in bracket ?.XMake sure that wiper blade : is seated
correctly.XFold the wiper arm back onto the
windshield.Replacing the rear window wiper bladeGWarning
The wiper arm could be set in motion and
injure you if the windscreen wipers are
switched on.
Remove the key from the ignition lock before
replacing the wiper blade.
Removing the wiper blade
XRemove the key from the ignition lock.XFold wiper arm : away from the rear
window until it engages.XPosition wiper blade ; at a right angle to
wiper arm :.XHold wiper arm : and press wiper
blade ; in the direction of the arrow until
it is released.XRemove wiper blade ;.
Installing the wiper blade
XPlace new wiper blade ; onto wiper
arm :.XHold wiper arm : and press wiper
blade ; in the opposite direction to the
arrow until it engages.XMake sure that wiper blade ; is seated
correctly.XPosition wiper blade ; parallel to wiper
arm :.XFold wiper arm : back onto the rear
window.Windshield wipers119Lights and windshield wipersBA 164.1 USA, CA Edition B 2011; 1; 2, en-USd2mskotVersion: 3.0.3.52010-04-21T17:25:06+02:00 - Seite 119Z

Problems with the windshield wipers
The windshield wipers are obstructed
Leaves or snow, for example, may be
obstructing the windshield wiper movement.
The wiper motor has been deactivated.
XFor safety reasons, you should remove the
key from the ignition lock.
or
XSwitch off the engine using the Start/Stop
button and open the driver's door.XRemove the cause of the obstruction.XSwitch the windshield wipers back on.
The windshield wipers are not working
The windshield wiper drive is malfunctioning.
XSelect another wiper speed on the
combination switch.XHave the windshield wipers checked at a
qualified specialist workshop.120Windshield wipersLights and windshield wipers
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Control panel for the dual-zone automatic climate controlFunctioniNotes/tips:Sets the temperature, leftSet the temperature to 72 ‡ (22 †).;Sets climate control to
automaticActivate climate control using the à and Á
buttons. The indicator lamps in the à and Á
buttons light up.=Defrosts the windshieldOnly use the "defrosting" function briefly until the
windshield is clear again.?Increases the airflowADirects the airflow through the
defroster ventsBSwitches cooling with air
dehumidification on/offActivate climate control using the à and Á
buttons. The indicator lamps in the à and Á
buttons light up.Switches the residual heat
function on/offUse the residual heat function if you want to heat or
ventilate the vehicle interior when the ignition is
switched off. The "residual heat" function can only be
activated or deactivated with the ignition switched
off.CSets the temperature, rightSet the temperature to 72 ‡ (22 †).DSwitches rear-compartment
climate control on/offEDirects the airflow through the
center and side air ventsFDirects the airflow to the
footwells and side air ventsGDisplays the airflow levelHReduces the airflowOverview of climate control systems123Climate controlBA 164.1 USA, CA Edition B 2011; 1; 2, en-USd2mskotVersion: 3.0.3.52010-04-21T17:25:06+02:00 - Seite 123Z

FunctioniNotes/tipsISwitches the rear window
heating on/offJActivates/deactivates air-
recirculation modeOnly use "air-recirculation" mode briefly, e.g. if there
are unpleasant outside odors or when in a tunnel. The
windows could otherwise fog up as, in air-
recirculation mode, no fresh air is drawn into the
vehicle.KInterior temperature sensorLSwitches climate control on/
offActivate climate control using the à and Á
buttons. The indicator lamps in the à and Á
buttons light up.
Control panel for the multi-zone automatic climate control
For USA only
Functioni Notes/tipsFront control panel:Sets the temperature, leftSet the temperature to 72 ‡ (22 †).;Sets climate control to
automaticActivate climate control using the à and Á
buttons. The indicator lamps in the à and Á
buttons light up.124Overview of climate control systemsClimate control
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FunctioniNotes/tips=Defrosts the windshieldOnly use the "defrosting" function briefly until the
windshield is clear again.?Increases the airflowADirects the airflow through the
defroster ventsBSwitches cooling with air
dehumidification on/offActivate climate control using the à and Á
buttons. The indicator lamps in the à and Á
buttons light up.Switches the residual heat
function on/offUse the residual heat function if you want to heat or
ventilate the vehicle interior when the ignition is
switched off. The "residual heat" function can only be
activated or deactivated with the ignition switched
off.CSets the temperature, rightSet the temperature to 72 ‡ (22 †).DSwitches rear-compartment
climate control on/offEDirects the airflow through the
center and side air ventsFDirects the airflow to the
footwells and side air ventsGDisplays the airflow levelHReduces the airflowISwitches the rear window
heating on/offJActivates/deactivates air-
recirculation modeOnly use "air-recirculation" mode briefly, e.g. if there
are unpleasant outside odors or when in a tunnel. The
windows could otherwise fog up as, in air-
recirculation mode, no fresh air is drawn into the
vehicle.KInterior temperature sensorLSwitches climate control on/
offActivate climate control using the à and Á
buttons. The indicator lamps in the à and Á
buttons light up.Rear control panelMIncreases the airflowOverview of climate control systems125Climate controlBA 164.1 USA, CA Edition B 2011; 1; 2, en-USd2mskotVersion: 3.0.3.52010-04-21T17:25:06+02:00 - Seite 125Z

FunctioniNotes/tipsNSets the temperatureSet the temperature to 72 ‡ (22 †).OSets the rear-compartment
climate control to automaticPDirects the airflow through the
rear air ventsQDirects the airflow through the
footwell ventsRSwitches rear-compartment
climate control on/offSReduces the airflow
For Canada only
Functioni Notes/tipsFront control panel:Sets the temperature, leftSet the temperature to 72 ‡ (22 †).;Sets climate control to
automaticActivate climate control using the à and Á
buttons. The indicator lamps in the à and Á
buttons light up.=Directs the airflow through the
defroster vents, left126Overview of climate control systemsClimate control
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FunctioniNotes/tips?Defrosts the windshieldOnly use the "defrosting" function briefly until the
windshield is clear again.AIncreases the airflowBSwitches the rear window
heating on/offCDirects the airflow through the
defroster vents, rightDOperates the rear-
compartment climate control
via the front control panelESets the temperature, rightSet the temperature to 72 ‡ (22 †).FSwitches climate control on/
offActivate climate control using the à and Á
buttons. The indicator lamps in the à and Á
buttons light up.GDirects the airflow to the
footwells and side air vents,
rightHDirects the airflow through the
center and side air vents, rightISwitches cooling with air
dehumidification on/offActivate climate control using the à and Á
buttons. The indicator lamps in the à and Á
buttons light up.Switches the residual heat
function on/offUse the residual heat function if you want to heat or
ventilate the vehicle interior when the ignition is
switched off. The "residual heat" function can only be
activated or deactivated with the ignition switched
off.JDisplayKReduces the airflowLActivates/deactivates air-
recirculation modeMDirects the airflow through the
center and side air vents, leftNDirects the airflow to the
footwells and side air vents,
leftOverview of climate control systems127Climate controlBA 164.1 USA, CA Edition B 2011; 1; 2, en-USd2mskotVersion: 3.0.3.52010-04-21T17:25:06+02:00 - Seite 127Z

FunctioniNotes/tipsOInterior temperature sensorPSwitches the MONO function
on/offUse the MONO function if you want to adopt the
temperature, air distribution and airflow settings
from the driver's side for all climate control zones.
The indicator lamp in the º button lights up.Rear control panelQIncreases the airflowRSets the temperatureSet the temperature to 72 ‡ (22 †).SSets the rear-compartment
climate control to automaticTDirects the airflow through the
rear air ventsUDirects the airflow through the
footwell ventsVSwitches rear-compartment
climate control on/offWReduces the airflowOperating the control systems
Switching the control on/off
Important information
GWarning!
When the climate control system is
deactivated, the outside air supply and
circulation are also deactivated. Only choose
this setting for a short time. Otherwise the
windows could fog up, impairing visibility and
endangering you and others.
i Activate climate control primarily using
the à button ( Y page 130).
Activating/deactivating the front
climate control using the front control
panelXTurn the key to position 2 in the ignition
lock.XTo activate: press the à button.
The indicator lamp in the à button lights
up. Airflow and air distribution are set to
automatic mode.
or
XPress the ^ button.
The indicator lamp in the ^ button goes
out. The previously selected settings come
into effect again.XTo deactivate: press the ^ button.
The indicator lamp in the ^ button lights
up.128Operating the control systemsClimate control
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