Page 111 of 358

High-beam headlamps
X
To switch on the high-beam headlamps:
turn the SmartKey in the ignition lock to
position 2or start the engine.
X Turn the light switch to 000Aor0005.
X Press the combination switch beyond the
pressure point in the direction of
arrow 0003.
In the 0005position, the high-beam
headlamps are only switched on when it is
dark and the engine is running.
The 0009 indicator lamp in the instrument
cluster lights up when the high-beam
headlamps are switched on.
X To switch off the high-beam
headlamps: move the combination switch
back to its normal position.
The 0009 indicator lamp in the instrument
cluster goes out.
High-beam flasher X
To switch on: turn the SmartKey in the
ignitio nlock to position 1or 2or start the
engine.
X Pull the combination switch in the direction
of arrow 0024. Hazard warning lamps
X
To switch on the hazard warning lamps:
press button 0003.
All turn signals flash. If you now switch on
a turn signal using the combination switch, only the turn signal lamp on the
corresponding side of the vehicle will flash.
X To switch off the hazard warning
lamps: press button 0003.
The hazard warning lamps automatically
switch on if:
R an air bag is deployed.
R the vehicle is slowed down rapidly from a
speed of over 45 mph (70 km/h) and
comes to a halt.
If the vehicle returns to a speed of over
6m ph (10 km/h) after a full application of the
brakes, the hazard warning lamps are
deactivated automatically.
i The hazard warning lamps still operate if
the ignition is switched off. Headlamp cleaning system
The headlamps are cleaned automatically if
the "Wipe with washer fluid" function is
operated five times (Y page 115) while the
lights are on and the engine is running. When
you switch off the ignition, the automatic
headlamp cleaning system is reset and
counting is resumed from 0. Cornering light function
The cornering light function improves the
illumination of the road over a wide angle in
the direction you are turning, enabling better
visibility in tight bends, for example. The
cornering light function can only be activated Exterior lighting
109Lights and windshield wipers Z
Page 281 of 358

Checking and adding other service
products
Checking the coolan tlevel G
WARNING
In orde rto avoid potentially serious burns:
R use extreme caution when opening the
hood if there are any signs of vapor or
coolant leaking from the cooling system, or
if the coolant temperature display indicates
that the coolant is overheated.
R do not remove the pressure cap on the
coolant tank if the coolant temperature is
above 158 ‡ (70 †). Allow the engine to
cool down before removing the cap. The
coolant tank contains hot fluid and is under
pressure.
R using a cloth, slowly turn the cap
approximately 0001turn to relieve excess
pressure. If you open the cap immediately,
pressurized scalding hot fluid and vapor will
be blown out.
R do not spill antifreeze on hot engine parts.
Antifreeze contains ethylene glycol which
may burn if it comes into contact with hot
engine parts. Example
X
Park the vehicle on a level surface.
Only check the coolant level when the
vehicle is on a level surface and the engine
has cooled down.
X Turn the SmartKey to position 2in the
ignition lock (Y page 135). On vehicles with KEYLESS-GO, press the
Start/Stop button twice (Y
page 136).
X Check the coolant temperature gauge in
the multifunction display.
The coolant temperature must be below
158 ‡ (70 †).
X Turn the SmartKey to position
0(Y page 135) in the ignition lock.
X Slowly turn cap 0004half a turn counter-
clockwise to allow excess pressure to
escape.
X Turn cap 0004further counter-clockwise and
remove it.
If the coolant is at the level of marker bar
0024 in the filler neck when cold, there is
enough coolant in coolant expansion
tank 0003.
If the coolant level is approximately 0.6 in
(1.5 cm) above marker bar 0024in the filler
neck when warm, there is enough coolant
in coolant expansion tank 0003.
X If necessary, add coolant that has been
tested and approved by Mercedes-Benz.
X Replace cap 0004and turn it clockwise as far
as it will go.
For further information on coolant, see
(Y page 351).
Windshield washer system and
headlam pcleaning system G
WARNING
Washer solvent/antifreeze is highly
flammable. Do not spill washer solvent/
antifreeze on hot engin eparts, because it may
ignite and burn .You could be seriously
burned. Engine compartment
279Maintenance and care Z
Page 282 of 358

Example
X
To open: pull cap0003upwards by the tab.
X Add the premixed washe rfluid.
X To close: press cap 0003onto the filler neck
until it engages.
The washer fluid reservoir is used for both the
windshield washer system and the headlamp
cleaning system.
For further information on the windshield
washer system and headlamp cleaning
system, see (Y page 352). ASSYST PLUS
Service messages
The ASSYST PLUS service interval display
informs you of the nex tservice due date.
Information on the type of service and service
intervals (see the separate Maintenance
Booklet).
You can obtain further information from an
authorized Mercedes-Benz Center or at
http://www.mbusa.com (USA only).
i The ASSYST PLUS servic einterval display
does not show any informatio nonthe
engine oil level. Observe the notes on the
engine oil level (Y page 277).
The multifunction display shows a service
message for several seconds, e.g.:
Next Service A Due in .. Days Service A Due
Service A Exceeded by ... Days The letter
A or
B , possibly in connection with
a number or another letter, shows the type of
service. A stands for a minor service and
B for
a major service.
You can obtain further information from any
authorized Mercedes-Ben zCenter.
The ASSYST PLUS service interval display
does not take into accoun tany periods of
time during which the battery is
disconnected.
Maintaining the time-dependent service
schedule:
X Note down the service due date displayed
in the multifunctio ndisplay before
disconnecting the battery.
or
X After reconnecting the battery, subtract
the battery disconnection periods fro mthe
service date shown on the display. Hiding
aservice message
X Press the 0007or000B button on the
steering wheel. Displaying service messages
X Switch on the ignition.
X Press the 000Aor0016 button on the
steering wheel to selec tthe Service menu.
X Press 0008or0009 to select the ASSYST PLUS submenu and press
000Bto confirm.
The service due date appears in the
multifunction display. Information about Service
Resetting the ASSYST PLUS service
interval display !
If the ASSYST PLUS service interval
display has been inadvertently reset, this 280
ASSYST PLUSMaintenance and care