instructions and safet yn otes on the "Occupant
Classification System (OCS)" ( Y
page 45).
You can thus avoid the risk st hat could arise as
ar esult of: R
an incorrectly categorized perso nint he front-
passenger seat R
the unintentional deactivatio noft he front-
passenger front air bag R
the unsuitable positionin goft he child
restraint system, e.g. too clos etot he dash-
board
Rearward-facing child restraint system If it is absolutely necessary to install ar earward-
facin gc hild restraint system on the front-
passenger seat, always make sure that the
front-passenge rf ront air bag is deactivated.
Only if the PASSENGER AI RB AG OFF indicator
lamp is permanently lit ( Y
page 39) is the front-
passenger front air bag deactivated.
Always observe the child restraint system man-
ufacturer' si nstallation and operating instruc-
tions.
Forward-facing child restraint system If you secur eac hild in af orward-facin gc hild
restraint system on the front-passenge rs eat,
always move the front-passenge rs eat as far
back as possible .T he entire base of the child
restraint system must always rest on the seat
cushio noft he front-passenge rs eat. The back-
rest of the child restraint system must lie as flat
as possible against the backrest of the front-
passenger seat. The child restraint system must
not touc ht he roof or be subjected to al oad by
the head restraint .A djust the angle of the seat
backrest and the head restraint position accord-
ingly. Always make sure that the shoulder belt
strap is correctly routed fro mt he front-
passenger seat belt guide to the shoulder belt
guide on the child restraint system. The shoul-
der belt strap must be routed forward and down
fro mt he front-passenge rs eat belt guide.
Always observe the child restraint system man-
ufacturer' si nstallation and operating instruc-
tions. Pets in th ev ehicle
G WARNING
If you leave animals unattended or unsecured
in the vehicle, the yc ould press buttons or
switches, for example.
As ar esult ,t he yc ould: R
activat ev ehicle equipmen ta nd become
trapped, for example R
activat eord eactivat es ystems, thereby
endangerin go ther road users
Unsecure da nimals could also be flung around
the vehicle in the even tofana ccident or sud-
den steerin gorb raking, thereby injuring vehi-
cle occupants. There is ar isk of an accident
and injury.
Never leave animals unattended in the vehi-
cle. Always secur ea nimals properly during
the journey, e.g. use as uitable animal trans-
port box.
Driving safety systems
Overview of driving safety systems In this section, you will fin di nformation about
the followin gd rivin gs afet ys ystems:R
AB S( A nti-lock B raking S ystem)
( Y
page 57) R
BA S( B rake A ssist S ystem) ( Y
page 57)R
Activ eB rak eA ssist ( Y
page 58)R
Adaptive brak el ight s( Y
page 60)R
ESP ®
( E lectronic S tability P rogram)
( Y
page 60) R
EB D( E lectronic B ra ke force D istribution)
( Y
page 63) R
ADAPTIVE BRAKE ( Y
page 63)
Important safety notes
If you fail to adapt your drivin gs tyle or if you are
inattentive, the drivin gs afet ys ystems can nei-
the rr educ et he risk of an accident nor override
the laws of physics .D ri vin gs afet ys ystems are
merely aids designed to assist driving.56
Driving safety systems
Safety
Correct driver's seat position
G WARNING
You coul dl ose control of your vehicle if you do
th ef ollowin gw hile driving:R
adjust th ed river' ss eat ,h ead restraint,
steering wheel or mirrors R
fasten th es eat belt
Ther eisar is kofana ccident.
Adjust th ed river' ss eat ,h ead restraint ,s te er-
ing wheel and mirror and fasten your seat belt
before starting th ee ng ine.
X
Observ et he safety guideline sons eat adjust-
men t( Y
page 84).X
Mak es ure that seat
The seats can still be adjusted when there is no
SmartKey in the ignition lock.
G WARNING
When you adjust as eat, you or other vehicle
occupant sc ould become trapped, e.g. on the
seat guide rail. There is ar isk of injury.
Make sure when adjusting as eat that no one
has any body parts in the sweep of the seat.
G WARNING
If the driver's seat is not engaged, it could
move forwards as far as the next catc hd uring
movemen ts uch as braking or abrupt changes
of direction .Asar esult, you would be pushed
against your seat belt by the unsecured driv-
er's seat.
This could cause you to lose control of the
vehicle. The seat belt cannot protec tasi nten-
ded and could result in additional injury.
There is ar isk of an accident and injury.
Before every journey, make sure that the driv-
er's seat is fully engaged.
Observe the safety notes on "Air bags"
( Y
page 43) and "Children in the vehicle"
( Y
page 53).
G WARNING
If the driver's seat is not engaged, it could
move unexpectedly while the vehicle is in
motion .T his could cause you to lose control of
the vehicle. There is ar isk of an accident.
Always make sure that the driver's seat is
engaged before starting the vehicle.
G WARNING
If you adjust the seat height carelessly, you or
other vehicle occupant sc ould be trapped and
thereby injured. Children in particular could
accidentally press the electrical seat adjust-
ment button sa nd become trapped. There is a
risk of injury.
While moving the seats, make sure that your
hands or other body parts do not get under the
lever assembly of the seat adjustmen ts ys-
tem. G WARNING
If the head restraints are not installed or not
adjusted correctly, they cannot provide pro-
tection as intended. There is an increased risk
of injury in the head and neck area, e.g. in the
event of an accident or when braking.
Always drive with the head restraints instal-
led. Before driving off, make sure for every
vehicle occupant that the center of the head
restraint supports the back of the head at
about eye level.
G WARNING
You could lose control of your vehicle if you do
the following while driving: R
adjust the driver's seat, head restraint,
steerin gw heel or mirrors R
fasten the seat belt
There is ar isk of an accident.
Adjust the driver's seat, head restraint, steer-
ing wheel and mirror and fasten your seat belt
before starting the engine.
! To prevent damage to the seats and the seat
heating, observe the following notes: R
Do not spill liquids ont ot he seats. Dry the
seats as soon as possible if liquid does get
spilled on the seats. R
If the seat covers are damp or wet, do not
switch on the seat heating. Also, do not use
the seat heating to dry the seats. R
Clean the seat covers as recommended;
see the "Interior care" section. R
Do not transport heavy loads on the seats.
Do not place pointed object sont he seat
cushions such as knives, nails or tools.
Where possible, use the seats only for car-
rying passengers. R
When operating the seat heating, do not
cover the seats with insulating materials,
e.g. blankets ,c oats, bags, protective cov-
ers, child seats or booster seats. R
When the seat heating is switched on, the
seat surface can be damaged as ar esult of
object sb eing placed on the seats; for
example, seat cushions, child seats and
protective covers not approved by
Mercedes-Benz. Seats 85
Seats, steering wheel and mirrors Z
This could result in burns in the immediate
vicinit yoft he air vents. There is ar isk of injury.
Reduce the heater output before it becomes
too hot.
The AIRSCARF function warms the head and
neck area of vehicle occupant sw ith warm air.
The warm air flows out of the holes in the head
restraints.
The three red indicator lamps in the button indi-
cate the heating level you have selected. X
Ensure that the SmartKey is in position H in
the ignition lock. X
To switch on: press button C .
Three red indicator lamps in the button light
up. The blower start supa fter ap reheating
phase of seven seconds. X
Press button C repeatedly until the desired
heating level is set. X
To switch off: press button C repeatedly
until all the indicator lamps go out.
i The blower continues runnin gf or seven sec-
onds to cool down the heating elements.
i If the battery voltage is too low, AIRSCARF
may switch off.
Problems with AIRSCARF AIRSCARF has switched off prematurely or will
not switch on. The vehicle's electrical system
voltage is too low because too many electrical
consumer sa re switched on.X
Switch off electrical consumer st hat you do
not need, such as the rear window defroster
or interior lighting. X
Switch on AIRSCARF again. Steering wheel
Important safety notes
G WARNING
You could lose control of your vehicle if you do
the following while driving: R
adjust the driver's seat, head restraint,
steerin gw heel or mirrors R
fasten the seat belt
There is ar isk of an accident.
Adjust the driver's seat, head restraint, steer-
ing wheel and mirror and fasten your seat belt
before starting the engine.
G WARNING
Children could injure themselves if they
adjust the steerin gw heel. There is ar isk of
injury.
When leaving the vehicle, alway st ake the
SmartKey with you and lock the vehicle. This
also applies to mobile phones if the "Digital
Car Key in smartphone" function is activated
via the Mercedes me connect web app. Never
leave children unsupervised in the vehicle.
The electrically adjustable steerin gw heel can
still be adjusted when there is no SmartKey in
the ignition lock.
Adjusting the steering wheel man-
ually
G WARNING
If the steerin gw heel is unlocked while the
vehicle is in motion ,itc ould change position
unexpectedly. This could cause you to lose
control of the vehicle. There is ar isk of an
accident.
Before starting off, make sure the steering
wheel is locked. Never unlock the steering
wheel while the vehicle is in motion.88
Steering wheel
Seats, steering wheel and mirrors
Exterio rm irrors
Adjusting th ee xterio rm irrors
G WARNING
You coul dl ose control of your vehicle if you do
th ef ollowin gw hile driving:R
adjust th ed river' ss eat ,h ead restraint,
steering wheel or mirrors R
fasten th es eat belt
Ther eisar isk of an accident.
Adjust th ed river' ss eat ,h ead restraint ,s te er-
ing wheel and mirror and fasten your seat belt
before starting th ee ngine.
G WARNING
The exterio rm irror on th ef ront-pa ssenger
side reduces th es iz eoft he image .V isible
object sa re actually closer than they appear.
This mean st ha ty ou coul dm isjudge th ed is-
tance from road user st ra velin gb ehind, e.g.
when changing lane .T her eisar isk of an acci-
dent.
For this reason ,a lways mak es ure of the
actual distanc ef ro mt he road user st ra veling
behin dbyg lancin go ve ry our shoulder.
X
Mak es ure that th eS ma rtKey is in position G
or H in th ei gnition lock.X
Press button C for th el eft exterio rm irror or
button D for th er igh te xterio rm irror.
The indicator lamp in th ec orrespondin gb ut-
to nl ight supinr ed.
The indicator lamp goes out again after some
time. You can adjust th es electe de xterior mirror usin gb utton