low beam MERCEDES-BENZ S-Class 2012 W221 User Guide

Other bulbs
There are bulbs other than the Xenon bulbs
that you cannot replace. Replace only the
bulbs listed (Y page 283). Have the bulbs that
you cannot replace yourself changed at a
qualified specialist workshop.
Mercedes-Benz recommends that you use an
authorized Mercedes-Benz Center for this
purpose. In particular, work relevant to safety
or on safety-related systems must be carried
out at a qualified specialist workshop.
If you require assistance changing bulbs,
consult a qualified specialist workshop.
Do not touch the glass tube of new bulbs with
your bare hands. Even minor contamination
can burn into the glass surface and reduce
the service life of the bulbs. Always use a lint-
free cloth or only touch the base of the bulb
when installing.
Only use bulbs of the correct type.
If the new bulb still does not light up, consult
a qualified specialist workshop.
Bulbs and lamps are an important aspect of
vehicle safety. You must therefore make sure
that these function correctly at all times.
Have the headlamp setting checked regularly.
GWARNING
Bulbs and lamps can be very hot. You should
therefore allow them to cool down before you
change them. Otherwise, you could be burned
if you touch them.
Keep bulbs out of the reach of children.
Otherwise, they could damage the bulbs, for
example, and injure themselves.
Never use a bulb which has been dropped.
Such a bulb may break or even explode and
injure you.
Halogen bulbs are pressurized and can
explode when you change them, particularly
if they are very hot. You should therefore wear
eye protection and gloves when you are
changing them.
Overview: changing bulbs/bulb types
You can change the following bulbs. The bulb
type can be found in the legend.
Bi-Xenon headlamps (vehicles with halogen
daytime running lamps)
:High-beam spot lamp: H7 55 W
Bi-Xenon headlamps (vehicles with LED daytime
running lamps)
:High-beam spot lamp 13
: H11 55 W;Infrared light (Night View Assist Plus):
H11 55 W13 Due to their location, have the bulbs in the left-hand headlamp changed at a qualified specialist workshop,
e.g. an authorized Mercedes-Benz Center.Replacing bulbs283Lights and windshield wipersZ

GWARNING
Objects located above the height range of
Parking Guidance will not be detected when
the parking space is measured. These objects
are not taken into account when the parking
procedure is calculated, e.g. overhanging
loads, tail sections or loading ramps of goods
vehicles. Under some circumstances, Parking
Guidance might therefore issue steering
instructions too soon. This may lead to a
collision. For this reason, you should avoid
using Parking Guidance in such situations.
GWARNING
Make sure that no persons or animals are in
the maneuvering range. Otherwise, they
could be injured.
! Pay particular attention to low objects or
objects with flat surfaces, such as trailer
drawbars, posts, cross beams and curbs.
These types of objects cannot be detected
by Parking Guidance and may damage the
vehicle.
When PARKTRONIC is deactivated, Parking
Guidance is also unavailable.
Use Parking Guidance for parking spaces:
R that are parallel to the direction of travel
R that are on straight roads, not bends
R that are on the same level as the road, i.e.
not on the pavement, for example. Parking
Guidance may not detect flat curbs
Parking tips:
R on narrow roads, drive past the parking
space as close as possible.
R parking spaces that are littered, overgrown
or partially occupied by trailer drawbars
might be identified incorrectly or not at all.
R snowfall or heavy rain may lead to a parking
space being measured inaccurately.
R pay attention to the PARKTRONIC
( Y page 348) warning messages during the
parking procedure.
R when transporting a load which protrudes
from your vehicle, you must not use Parking
Guidance.
R never use Parking Guidance with snow
chains or an emergency spare wheel
installed.
R make sure that the tire pressures are
always correct. This has a direct effect on
the steering instructions.
R the way your vehicle is positioned in the
parking space after parking is dependent
on various factors. These include the
position and shape of the vehicles parked
in front and behind it and the conditions of
the location. In some cases, Parking
Guidance may guide you too far or not far
enough into a parking space. In some
cases, it may also lead you across or onto
the curb. If necessary, cancel the parking
procedure with Parking Guidance.
! If unavoidable, you should drive over
obstacles such as curbs slowly and not at
a sharp angle. Otherwise, you may damage
the wheels or tires.
Detecting a parking space:Detected parking space on the left;Parking symbol=Detected parking space on the right
Parking Guidance is automatically activated
when you drive forwards. The system is
operational at speeds of up to approximately
22 mph (35 km/h). While in operation, the
system independently locates and measures
parking spaces on both sides of the vehicle.
At speeds below 19 mph (30 km/h), you see
white parking symbol ; in the instrument
cluster as a status indicator. Parking
Driving systems351Driving and parkingZ

XPress a.
The current selection is displayed.XTo activate/deactivate: press a
again.
When ATTENTION ASSIST ( Y page 356) is
activated, the À symbol appears in the
multifunction display when the ignition is on.
Activating/deactivating Blind Spot
Assist
You can use the Blind Spot Assist
function to activate or deactivate Blind Spot
Assist ( Y page 360) or Active Blind Spot
Assist ( Y page 364).
XPress = or ; on the steering wheel
to select the DriveAssist menu.XPress 9 or : to select Blind Spot
Assist .XPress a.
The current selection is displayed.XTo activate/deactivate: press a
again.
Activating/deactivating Lane Keeping
Assist
You can use the Lane Keeping Assist
function to activate/deactivate Lane Keeping
Assist ( Y page 362) or Active Lane Keeping
Assist ( Y page 367).
XPress the = or ; button on the
steering wheel to select the DriveAssist
menu.XPress the 9 or : button to select
Lane Keeping Assist .XPress a.
The current selection is displayed.XTo activate/deactivate: press a
again.
If Lane Keeping Assist or Active Lane keeping
Assist is activated, the multifunction display
shows the à symbol when the ignition is
switched on.
Service menu
In the Service menu you can:
R call up display messages ( Y page 388)
R check the tire pressure electronically
( Y page 497)
R call up the service due date ( Y page 462)
R check the oil level ( Y page 457)
Settings menu
Introduction
The Settings menu can be used for:
R switching the daytime running lamps on/
off
R switching Adaptive Highbeam Assist on/
off
R showing or hiding the additional
speedometer
R selecting the units for speed and distance
R switching the belt adjustment on/off
R activating/deactivating the radar sensor
system
Switching the daytime running lamps
on/off
This function is not available in Canada.
If you have activated the Daytime Running
Light function and the light switch is in the
$ or c position, the daytime running
lamps are switched on automatically when
the engine is running.
In the dark, the following also light up:
R the parking lamps
R the tail lamps
R the license plate lamp
R the side marker lamps
If you turn the light switch to a different
position, the corresponding lights are
switched on. If you switch off the daytime
running lamps at night, make sure that the
light switch is set to L or c .
The factory setting is On.
Menus and submenus385On-board computer and displaysZ

XPress the = or ; button on the
steering wheel to select the Settings
menu.XPress the 9 or : button to select
Day Running Lights .XPress the a button to confirm.XTo activate/deactivate: press a
again.
Switching Adaptive Highbeam Assist
on/off
XPress the = or ; button on the
steering wheel to select the Settings
menu.XPress the : or 9 button to select
Adapt. High-beam Asst. .XPress the a button to confirm.XTo activate/deactivate: press a
again.
Switching the additional speedometer
on or off
An additional digital speedometer can be
shown in the multifunction display.
Vehicles with a kilometer speedometer: the
digital speedometer has mph units.
Vehicles with a miles speedometer: the digital
speedometer has km/h units.
XPress the = or ; button on the
steering wheel to select the Settings
menu.XPress 9 or : to select Add.
Speedometer .XPress the a button to confirm.XPress the a button to save the setting.
Selecting the unit of measurement for
distance
The Display Unit Speed-/Odometer:
function allows you to choose whether
certain displays appear in kilometers or miles.
The selected unit of measurement for
distance applies to:
R the analog speedometer
R the digital speedometer in the Trip menu
R the odometer and the trip odometer
R the trip computer
R the navigation instruction in the Navi menu
R DISTRONIC PLUS
R ASSYST PLUS service interval display
The digital speedometer shows alternative
speed units ( Y page 386).XPress the = or ; button on the
steering wheel to select the Settings
menu.XPress the 9 or : button to select
Units .XPress the a button to confirm.XPress the a button to save the setting.
The unit switches between km/h and mph.
Switching the belt adjustment on/off
For further information on belt adjustment
( Y page 60).
XPress the = or ; button on the
steering wheel to select the Settings
menu.XPress the 9 or : button to select
Belt Adjustment .XPress the a button to confirm.XTo activate/deactivate: press a
again.
Activating/deactivating the acoustic
locking verification signal
If you activate the Acoustic Lock Feedb.
function, an audible signal sounds depending
on the vehicle's date of manufacture:
R when locking
or
R once when unlocking and three times when
locking
386Menus and submenusOn-board computer and displays

Lights
i Display messages about LEDs:
This display message will only appear if all LEDs have failed.Display messagesPossible causes/consequences and M Solutionsb
Check Left
Cornering
Light or Check
Right Cornering
Light The left or right-hand cornering light is defective.XCheck whether you are permitted to change the bulb yourself
( Y page 282).
or
XVisit a qualified specialist workshop.b
Check Left Low
Beam or Check Right
Low Beam The left or right-hand low-beam headlamp is defective.XCheck whether you are permitted to change the bulb yourself
( Y page 282).
or
XVisit a qualified specialist workshop.b
Check Rear Left
Turn
Signal or Check
Rear Right Turn
SignalThe rear left-hand or rear right-hand turn signal is defective.XCheck whether you are permitted to change the bulb yourself
( Y page 282).
or
XVisit a qualified specialist workshop.b
Check Front Left
Turn
Signal or Check
Front Right Turn
SignalThe front left-hand or front right-hand turn signal is defective.XCheck whether you are permitted to change the bulb yourself
( Y page 282).
or
XVisit a qualified specialist workshop.b
Check Left Mirror
Turn
Signal or Check
Right Mirror Turn
SignalThe turn signal in the left-hand or right-hand exterior mirror is
defective.XCheck whether you are permitted to change the bulb yourself
( Y page 282).
or
XVisit a qualified specialist workshop.Display messages401On-board computer and displaysZ

Display messagesPossible causes/consequences and M Solutionsb
Please Switch Off
LightsThe lights are still switched on when you leave the vehicle. A
warning tone also sounds.XTurn the light switch to $ or c .
or
XIf the rear fog lamp is switched on: press the light switch in to
the stop.Adaptive High-beam
Assist inoperativeAdaptive Highbeam Assist is defective.XVisit a qualified specialist workshop.
Engine
Display messagesPossible causes/consequences and M Solutions+
Check Coolant
Level See Oper.
ManualThe coolant level is too low.XAdd coolant, observing the warning notes when doing so
( Y page 460).XIf coolant needs to be added more often than usual, have the
engine coolant system checked at a qualified specialist
workshop.GWARNING
Do not spill antifreeze on hot engine parts. Antifreeze contains ethylene glycol which may burn
if it comes into contact with hot engine parts. You could be seriously burned.
! The coolant level is too low. Avoid making long journeys with too little coolant in the cooling
system. The engine will otherwise be damaged.
The display messages and the corresponding symbol that indicate that the coolant level is
too low must not be ignored.
404Display messagesOn-board computer and displays