
Turn signal lamp (halogen headlamps)
X
Switch off the lights.
X Open the hood.
X Turn bulb holder 0003counter-clockwise and
pull it out.
X Take the bulb ou tofbulb holder 0003.
X Inser tthe new bulb into bulb holder 0003.
X Insert bulb holder 0003and turn it clockwise
until it engages. Changing the rear bulbs
Backup lamp X
Switch off the lights.
X Make sure that the roof is closed.
X Open the trunk.
X Turn and pull out buffer stop 0004.
X Unclip catch 0003for side paneling 0024. X
Reach upwards into side paneling 0024,
loosen and pull downwards until
holder 0023of the backup lamp is easily
accessible.
X Pull out bulb holder 0023.
X Pull out the bulb.
X Insert the new bulb into bulb holder 0023.
X Insert holder 0023until it engages.
X re-install side paneling 0024precisely.
X Clip in catch 0003for side paneling 0024.
X Push in and tighten buffer stop 0004. Windshield wipers
Switching the windshield wipers on/
off
G
WARNING
The windshield will no longer be wiped
properly if the wiper blades are worn. This
could prevent you from observing the traffic
conditions, thereby causing an accident.
Replace the wiper blades twice a year, ideally
in spring and fall.
! 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 can
scratch the glass if wiping takes place when
the windshield is dry.
If it is necessary to switch on the windshield
wipers in dry weather conditions, always Windshield wipers
115Lights and windshield wipers Z

X
Press the 0004or0003 button to adjust the
brightness to any level from Off to
Level 5 (bright).
X Press the 000Bor0007 button to save the
setting.
Setting the ambient lighting color
X Press the 0002or0005 button on the
steering wheel to select the Sett. menu.
X Press the 0004or0003 button to select the
Lights submenu.
X Press 000Bto confirm.
X Press the 0004or0003 button to select the
Ambient Light Color: function.
X Press 000Bto confirm.
X Press 0004or0003 to set the color to
SOLAR ,
POLAR or
NEUTRAL .
X Press the 000Bor0007 button to save the
setting.
Activating/deactivating surround
lighting and exterior lighting delayed
switch-off
X Press the 0002or0005 button on the
steering wheel to select the Sett. menu.
X Press the 0004or0003 button to select the
Lights submenu.
X Press 000Bto confirm.
X Press the 0004or0003 button to select the
Locator Lighting: function.
You will see the selected setting: Enabledor
Disabled .
X Press the 000Bbutton to save the setting.
Deactivating delayed switch-off of the
exterior lighting temporarily:
X Before leaving the vehicle, turn the
SmartKey to position 0in the ignition lock.
X Turn the SmartKey to position 2in the
ignition lock.
The exterior lighting delayed switch-off is
deactivated. Delayed switch-off of the exterior lighting is
reactivated the next time you start the
engine.
If you have activated the
Locator Lighting: function and the light switch is set
to 0005, the following functions are activated
when it is dark:
R surround lighting: the exterior lighting
remains lit for 40 seconds after unlocking
with the key. If you start the engine, the
surround lighting is switched off and
automatic headlamp mode is activated
(Y page 107).
R exterior lighting delayed switch-off: the
exterior lighting remains lit for
60 seconds after the engine is switched off.
If you close all the doors and the trunkl id,
the exterior lighting goes off after
15 seconds.
i Depending on your vehicle's equipment,
when the surround lighting and delayed
switch-off exterior lighting are on, the
following light up:
R Parking lamps
R Front fog lamps
R Low-beam headlamps
R Daytime running lamps
R Side marker lamps
R Surround lighting in the exterior mirrors
Activating/deactivating the interior
lighting delayed switch-off
If you activate the Interior Lighting Delay: function, the interior lighting remains
on for 20seconds after you remove the key
from the ignition lock.
X Press the 0002or0005 button on the
steering wheel to selec tthe Sett. menu.
X Press the 0004or0003 button to select the
Lights submenu.
X Press 000Bto confirm. Menus and submenus
205On-board computer and displays Z

Display messages Possible causes/consequences and
0001 Solutions
Operator's Manual display message mus
tnot be shown in the
multifunction display.
X Wait for a period of at least 60 seconds until the necessary
system checks have been completed.
X Make sure that the display messages do not appear in the
multifunction display.
If these conditions are fulfilled, the front-passenger seat can be
occupied again. Whether the 00030005indicator lamp remains lit
or goes out depends on how OCS classifies the occupant.
If the conditions are not fulfilled, the system is not operating
correctly.
X Visit a qualified specialist workshop immediately.
For further information about the Occupant Classification System,
see (Y page 45). Lights
i Display messages about LEDs:
This display message will only appear if all LEDs have failed. Display messages Possible causes/consequences and
0001 Solutions
0001
Check Left
Cornering
Light or
Check Right Cornering
Light The left or right-hand cornering light is defective.
X
Check whether you are permitted to replace the bulb yourself
(Y page 113).
or
X Visit a qualified specialist workshop. 0001
Check Left Low
Beam or
Check Right Low Beam The left or right-hand low-beam headlamp is defective.
X
Check whether you are permitted to replace the bulb yourself
(Y page 113).
or
X Visit a qualified specialist workshop. 0001
Check Rear Left
Turn
Signal or
Check Rear Right Turn
Signal The rear left-hand or rear right-hand turn signal is defective.
X
Check whether you are permitted to replace the bulb yourself
(Y page 113).
or
X Visit a qualified specialist workshop. 222
Display messagesOn-board computer and displays

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

http://bevo.mercedes-benz.com. Or
contact a qualified specialist workshop.
! Always use a suitable coolant mixture,
even in countries where high temperatures
prevail.
Otherwise, the engine cooling system is not
sufficiently protected from corrosion and
overheating.
The coolant is a mixture of water and
antifreeze/corrosion inhibitor. It performs
the following tasks:
R corrosion protection
R antifreeze protection
R raising the boiling point
If the coolant has antifreeze protection down
to -35 ‡ (-37 †), the boiling point of the
coolant during operation is approximately
266 ‡ (130 †).
The antifreeze/corrosion inhibitor
concentration in the engine cooling system
should:
R be at least 50%. This will protect the engine
cooling system against freezing down to
approximately -35 ‡ (-37 †).
R not exceed 55% (antifreeze protection
down to -49 ‡ [-45 †]). Otherwise, heat
will not be dissipated as effectively.
If the vehicle has lost coolant, add equal
amounts of water and antifreeze/corrosion
inhibitor. Mercedes-Ben zrecommends an
antifreeze/corrosion inhibitor concentrate in
accordance with MB Specifications for
Service Products 310.1.
The coolant is checked with every
maintenance interval at a qualified specialist
workshop.
i When the vehicle is first delivered, it is
filled with a coolant mixture that ensures
adequate antifreeze and corrosion
protection. Filling capacities Missing values were not available at time of
going to print.
Model Capacity
SLK 250
Approx. 10.1 US qt
(9.6 l) SLK 350
Approx. 11.0 US qt
(10.4 l) SLK 55 AMG
i
Use antifreeze/corrosion inhibitor
according to MB approval 325.0 or 326.0. Windshield/headlamp cleaning
system
Important safety notes 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.
! Only use washer fluid that is suitable for
plastic lamp lenses, e.g. MB SummerFit or
MB WinterFit. Unsuitable washer fluid
could damage the plastic lenses of the
headlamps.
! Do not add distilled or de-ionized water to
the washer fluid container. Otherwise, the
level sensor may be damaged.
! Only MB SummerFit and MB WinterFit
washer fluid should be mixed together. The
spray nozzles may otherwise become
blocked. 352
Service products and filling capacitiesTechnical data