dashboard warning lights MERCEDES-BENZ SLC-Class 2017 R172 Owner's Manual

If the front passenger does not observe these
conditions, OCS may produceafalse classifica-
tion, e.g. because the front passenger:
Rtransfers their weight by supporting them-
selves on avehicle armrest
Rsits in such away that their weight is raised
from the seat cushion
If you install achild restraint system on the
front-passenger seat, be sure to observe the
correct positioning of the child restraint system.
Never place objects under or behind the child
restraint system, e.g. acushion. The entire base
of the child restraint system must always rest on
the seat cushio nofthe front-passenger seat.
The backrest of the forward-facing child
restraint system must lie as flat as possible
against the backrest of the front-passenger
seat.
The child restraint system must not touch the
roof or be subjected to aload by the head
restraint. Adjust the angle of the seat backrest
and the head restraint positiona ccordingly.
Only then can OCS be guaranteed to function
correctly. Alway sobserve the child restraint sys-
tem manufacturer's installation and operating
instructions.
Occupant Classification System opera-
tion (OCS)
:PASSENGER AIR BAG ON indicator lamp
;PASSENGER AIR BAG OFF indicator lamp
The indicator lamp sinform you whether the
front-passenger front air bag is deactivated or
enabled.
XPress the Start/Stop button once or twice, or turn the SmartKey to position 1or 2in the
ignition lock.
The system carries out self-diagnostics. The PASSENGER AIR BAG OFF and PASSENGER
AIR BAG ON indicator lamp
smust lightu psimul-
taneousl yfor approximately six seconds.
The indicator lamp sdisplay the status of the
front-passenger front air bag.
RPASSENGER AIR BAG ON lights up: the front-
passenger front air bag is enabled. If, in the
event of an accident, all deployment criteria
are met, the front-passenger front air bag is
deployed.
RPASSENGER AIR BAG OFF lights up: the front-
passenger front air bag is deactivated. It will
then not be deployed in the event of an acci-
dent.
If the status of the front-passenger front air bag changes whil ethe vehicle is in motion, an air bag
display messag eappears in the instrument clus-
ter (
Ypage 187). When the front-passenger
seat is occupied, always pay attention to the
PASSENGER AIR BAG ON and PASSENGER AIR
BAG OFF indicator lamps. Be aware of the status
of the front-passenger front air bag both before
and during the journey.
GWARNING
If the PASSENGER AIR BAG OFF indicator
lamp is lit, the front-passenger front air bag is
disabled.Itw illnot be deployed in the event of
an accident and cannot perform its intended
protective function. Aperson in the front-
passenger seat could then, for example ,come
into contact with the vehicle's interior, espe-
ciallyift he person is sitting too close to the
dashboard. This poses an increased risk of
injury or even fatal injury.
When the front-passenger seat is occupied,
always ensure that:
Rthe classification of the person in the front- passenger seat is correct and the front-
passenger front air bag is enabled or disa-
bled in accordance with the person in the
front-passenger seat
Rthe front-passenger seat has been moved
back as far back as possible.
Rthe person is seated correctly.
Make sure, both before and during the jour-
ney, that the status of the front-passenger
front air bag is correct.
Occupant safety45
Safety
Z

GWARNING
If you secure achild in arearward-facing child
restraint system on the front-passenge rseat
and the PASSENGER AIR BAG ON indicator
lamp is lit up, the front-passenge rfront air bag
may deploy in an accident. The child coul dbe
struck by the air bag .This posesani ncreased
risk of injury or even fatal injury.
Make sure that the front-passenge rfront air
bag has been disabled. The PASSENGER AIR
BAG OFF indicator lamp must be lit.
If the PASSENGER AIR BAG OFF indicator lamp
remains off and/or the PASSENGER AIR BAG
ON indicator lamp lights up, do not install arear-
ward-facing child restraint system on the front-
passenger seat. You can find more information
on OCS under "Problems with the Occupant
Classification System" (
Ypag e48).
GWARNING
If you secure achild in aforward-facing child
restraint system on the front-passenge rseat
and you position the front-passenge rseat too
close to the dashboard, in the event of an
accident, the child could:
Rcome into contact with the vehicle's inte-
rior if the PASSENGER AIR BAG OFF indi-
cator lamp is lit, for example
Rbe struck by the air bag if the PASSENGER
AIR BAG ON is lit up
This poses an increased risk of injury or even fatal injury.
Move the front-passenge rseat as far back as
possible.A lways make sure that the shoulder
belts trap is correctly routed from the vehicle
beltl oop to the shoulde rbeltg uide on the
child restraint system. The shoulde rbelts trap
must be routed forwards and downwards
from the beltl oop.Always observe the child
restraint system manufacturer's installation
instructions.
If OCS determines that:
Rthe front-passenge rseat is unoccupied ,the
PASSENGER AIR BAG OFF indicator lamp
lights up after the system self-test and remains lit. This indicates that the front-
passenger front air bag is deactivated.
Rthe front-passenge
rseat is occupied by a
child of up to twelve months old, in astandard
child restraint system, the PASSENGER AIR
BAG OFF indicator lamp lights up after the
system self-test and remains lit. This indi-
cates that the front-passenge rfront air bag is
deactivated.
But even in the case of atwelve-month-old
child ,inas tandard child restraint system, the
PASSENGER AIR BAG ON can light up perma-
nently after the system self-test. This indi-
cates that the front-passenge rfront air bag is
activated. The result of the classification is
dependent on, among other factors, the child
restraint system and the child's stature. Make
sure that the conditions for acorrect classi-
ficatio nare met. If the PASSENGER AIR BAG
OFF indicator lamp is still lit, do not install a
child restraint system on the front-passenger
seat.
Rthe front-passenge rseat is occupied by aper-
son of smaller stature (e.g. ateenage ror
smal ladult), either the PASSENGER AIR BAG
ON or PASSENGER AIR BAG OFF indicator
lamp lights up and remains lit after the system
self-test depending on the result of the clas-
sification.
-If the PASSENGER AIR BAG ON indicator
lamp lights up, move the front-passenger
seat as far back as possible.
-If the PASSENGER AIR BAG OFF indicator
lamp is lit, apersonofs maller stature
should not use the front-passenge rseat.
Rthe front-passenge rseat is occupied by an
adult or apersonofa dult stature, the
PASSENGER AIR BAG ON indicator lamp
lights up after the system self-test and
remains lit. This indicates that the front-
passenger front air bag is activated.
If children are traveling in the vehicle, be sure to
observe the notes on "Children in the vehicle"
(
Ypag e51).
When OCS is malfunctioning, the red 6
restraint system warning lamp in the instrument
cluster and the PASSENGER AIR BAG OFF indi-
cator lamp light up simultaneously .The front-
passenger front air bag is deactivated in this
case and does not deploy during an accident.
Have the system checked by qualified techni-
cians as soon as possible.C onsult an authorized
Mercedes-Benz Center. The front-passenger
46Occupant safety
Safety

Warning displays
Warning display for the front area
:
Segments on the left-hand side of the vehi-
cle
;Segments on the right-hand side of the vehi-cle
=Segments showing operational readiness
The warning display sshow the distance
between the sensors and the obstacle. The
warning display for the front area is located on
the dashboard above the center air vents. The
warning display for the rear area is located
between the roll bars.
The warning display for each side of the vehicle
is divided into five yellow and two red segments.
PARKTRONIC is operational if yellow segments
showing operational readiness =light up.
The selected transmission position and the
direction in which the vehicl eisrolling deter-
mine which warning display is active whe nthe
engine is running.
Automati ctransmission:
Transmission posi-
tionWarning display
DFront area activated
R, Nor the vehicl eis
rolling backwardsRea rand front areas
activated
PNo area sactivated
One or more segments light up as the vehicle
approache sanobstacle, depending on the vehi-
cle's distance from the obstacle. From the:
Rsixth segment onwards, you wil
lhearani nter-
mittent warning tone for approximately two
seconds.
Rseventh segment onwards, you wil lheara
warning tone for approximately two seconds.
This indicates that you have now reache dthe
minimu mdistance.
Deactivating/activating PARKTRONIC
:Deactivates/activates PARKTRONIC
;Indicator lamp
If indicator lamp ;lights up, PARKTRONIC is
deactivated. Parking Guidance is als odeactiva-
ted.
iPARKTRONIC is automatically activated
whe nyou turn the SmartKey to position 2in
the ignition lock.
Driving systems151
Driving and parking
Z