MERCEDES-BENZ GLC COUPE 2017 X253 Service Manual

Center console, lower section (Mercedes-AMG vehicles)
FunctionPage
:Stowage compartment273
Ashtray286
Cigarette lighter287
Socket287
Cup holder284
;Adjusts the volume264
Switches the sound on or off264
=ÜSwitches the multime-
dia system on/off264
?è ECO start/stop func-
tion131
AÉ Adjusts the vehicle
level (AIR BODY CONTROL)168
BOpens stowage compart-
ment with Media Interface273
FunctionPage
CTouchpad265
Då Activates/deactivates
ESP®70
M Activates/deactivates
SPORT handling mode70
EAMG sports suspension
based on AIR BODY CON-
TROL
169
FManual gearshifting (perma-
nent setting)140
GDYNAMIC SELECT switch134
H% Back button264
IController264
JgFavorites button266
Center console39
At a glance

Overhead control panel
FunctionPage
:pSwitches the left-hand
reading lamp on/off112
;| Switches the automatic
interior lighting control
on/off
112
=G SOS button (mbrace
system)290
?c Switches the front inte-
rior lighting on/off112
Au Switches the rear inte-
rior lighting on/off112
Bp Switches the right-
hand reading lamp on/off112
Cï Info call button
(mbrace system)292
FunctionPage
DEyeglasses compartment274
E3 Operates the sliding
sunroof92
FRear-view mirror
Automatic anti-glare104
GButtons for the garage door
opener297
HMicrophone for mbrace sys-
tem, telephone and the Voice
Control System, see the sep-
arate operating instructions
IF Breakdown assistance
call button (mbrace system)291
40Overhead control panel
At a glance

Door controlpanel
FunctionPage
:r 45=
Stores settings for the seat,
exterior mirrors and steering
column
106
;Adjusts the seats electrically97
=c Seat heating99
?sSeat ventilation100
AOpens the door82
B%&Unlocks/locks
the vehicle82
CWOpens/closes the rear
left side window88
DW Opens/closes the left
side window88
FunctionPage
E7Zª\
Adjusts and folds the exterior
mirrors out/in electrically
103
FW Opens/closes the right
side window88
GW Opens/closes the rear
right side window88
Hn Override feature for the
controls in the rear compart-
ment
63
Ip Opens/closes the tail-
gate87
Door control panel41
At a glance

Panic alarm
XTo arm:press and hold the !button :
for approximately one second.
A visual and audible alarm is triggered if the
alarm system is armed.
XTo disarm: press the!button :again.
or
XInsert the SmartKey into the ignition lock.
or
XPress the Start/Stop button.
The SmartKey must be in the vehicle.
Occupant safety
Introduction to the restraint system
The restraint system can reduce the risk of vehi- cle occupants coming into contact with parts of
the vehicle's interior in the event of an accident.
The restraint system can also reduce the forces to which vehicle occupants are subjected during
an accident.
The restraint system comprises:
Rseat belt system
Rair bags
Rchild restraint system
Rchild seat securing systems
The components of the restraint system work in
conjunction with each other. They can only
deploy their protective function if, at all times, all vehicle occupants:
Rhave fastened their seat belts correctly
(Ypage 45)
Rhave adjusted their seat and head restraint
properly (Ypage 95). As the driver, you also have to make sure that
the steering wheel is adjusted correctly.
Observe the information relating to the correct
driver's seat position (
Ypage 95).
You also have to make sure that an air bag can
inflate properly if deployed (
Ypage 47).
An air bag supplements a correctly worn seat
belt. As an additional safety device, the air bag
increases the level of protection for vehicle
occupants in the event of an accident. For exam-
ple, if, in the event of an accident, the protection
offered by the seat belt is sufficient, the air bags are not deployed. When an accident occurs, only
the air bags that increase protection in that par-ticular accident situation are deployed. How-
ever, seat belts and air bags generally do not
protect against objects penetrating the vehicle
from the outside.
Information on restraint system operation can
be found under "Triggering of the Emergency
Tensioning Devices and air bags" (
Ypage 54).
For information on children traveling with you in
the vehicle and on child restraint systems, see
"Children in the vehicle" (
Ypage 58).
Important safety notes
GWARNING
Modifications to the restraint system may
cause it to no longer work as intended. The
restraint system may then not perform its
intended protective function and may fail in an
accident or trigger unexpectedly, for example.
This poses an increased risk of injury or even fatal injury.
Never modify parts of the restraint system.
Never tamper with the wiring, the electronic
components or their software.
If it is necessary to modify components of the
restraint system to accommodate a person
with disabilities, contact an authorized
Mercedes-Benz Center for details. USA only:
for further information contact our Customer
Assistance Center at 1-800-FOR-MERCedes
(1‑800‑367‑6372).
Mercedes-Benz recommends that you only use
driving aids which have been approved specifi-
cally for your vehicle by Mercedes-Benz.
42Occupant safety
Safety

Restraint system warning lamp
The functions of the restraint system are
checked after the ignition is switched on and at
regular intervals while the engine is running.
Therefore, malfunctions can be detected in
good time.
The6 restraint system warning lamp in the
instrument cluster lights up when the ignition is
switched on. It goes out no later than a few sec-
onds after the vehicle is started. The compo-
nents of the restraint system are in operational
readiness.
A malfunction has occurred if the 6restraint
system warning lamp:
Rdoes not light up after the ignition is switched
on
Rdoes not go out after a few seconds with the
engine running
Rlights up again while the engine is running
GWARNING
If the restraint system is malfunctioning,
restraint system components may be trig-
gered unintentionally or may not deploy as
intended during an accident. This can affect
for example the Emergency Tensioning
Device or the air bag. This poses an increased
risk of injury or even fatal injury.
Have the restraint system checked and
repaired in a qualified specialist workshop as
soon as possible.
PASSENGER AIR BAG indicator lamp
PASSENGER AIR BAG ON indicator lamp :and
PASSENGER AIR BAG OFF indicator lamp ;are
part of the Occupant Classification System
(OCS). The indicator lamps display the status of the
front-passenger front air bag.
RPASSENGER AIR BAG ON lights up for 60 sec-
onds, subsequently both indicator lamps are
off (PASSENGER AIR BAG ON and OFF): the
front-passenger front air bag is able to deploy
in the event of an accident.
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 PASSENGER AIR BAG ON indicator lamp is
off, only the PASSENGER AIR BAG OFF indicator lamp shows the status of the front-passenger
front air bag. The PASSENGER AIR BAG OFF
indicator lamp may be lit continuously or be off.
Depending on the person in the front-passenger
seat, the front-passenger front air bag must
either be deactivated or enabled; see the fol-
lowing points. You must make sure of this both
before and during a journey.
RChildren in a child restraint system:
whether the front-passenger front air bag is
enabled or deactivated depends on the instal-led child restraint system, and the age and
size of the child. Therefore, be sure to observe
the notes on the "Occupant Classification
System (OCS)" (
Ypage 50) and on "Chil-
dren in the vehicle" (Ypage 58). There you
will also find instructions on rearward and
forward-facing child restraint systems on the
front-passenger seat.
RAll other persons: depending on the classi-
fication of the person in the front-passenger
seat, the front-passenger front air bag is ena-
bled or deactivated (
Ypage 50). Be sure to
observe the notes on "Seat
belts“ (
Ypage 43) and "Air bags"
(Ypage 47). There you can also find infor-
mation on the correct seat position.
Seat belts
Introduction
Seat belts are the most effective means of
restricting the movement of vehicle occupants
in the event of an accident or the vehicle rolling over. This reduces the risk of vehicle occupants
coming into contact with parts of the vehicle
interior or being ejected from the vehicle. Fur-
thermore, the seat belt helps to keep the vehicle
Occupant safety43
Safety
Z

occupant in the best position in relation to the
air bag.
The seat belt system comprises:
RSeat belts
REmergency Tensioning Devices for the front
seat belts and the outer seat belts in the rear
RSeat belt force limiters for the front seat belts
and the outer seat belts in the rear
If the seat belt is pulled out of the belt outlet
quickly or with a jerky movement, the belt
retractor locks. The belt strap cannot be extrac-
ted any further.
The Emergency Tensioning Device tightens the
seat belt in an accident, pulling the belt close
against the body. However it does not pull the
vehicle occupant back in the direction of the
backrest.
The Emergency Tensioning Device does not cor-
rect an incorrect seat position or the routing of
an incorrectly fastened seat belt.
When triggered, a seat belt force limiter helps to
reduce the force exerted by the seat belt on the
vehicle occupant.
The seat belt force limiters for the front seats are
synchronized with the front air bags, which
absorb part of the deceleration force. This can
reduce the force exerted on the vehicle occu-
pants during an accident.
!If the front-passenger seat is unoccupied,
do not insert the belt tongue into the buckle of
the front-passenger seat. This may otherwise
lead to the triggering of the Emergency Ten-
sioning Device in the event of an accident,
which will then need to be replaced.
Important safety notes
The use of seat belts and child restraint systems
is required by law in:
Rall 50 states
Rthe U.S. territories
Rthe District of Columbia
Rall Canadian provinces
Even where this is not required by law, all vehicle
occupants should correctly fasten their seat
belts before starting the journey.
GWARNING
If the seat belt is not worn correctly, it cannot
perform its intended protective function. An
incorrectly fastened seat belt can also cause
injuries, for example, in the event of an acci-
dent or when braking or changing direction
abruptly. This poses an increased risk of injury or even fatal injury.
Always ensure that all vehicle occupants have
their seat belts fastened correctly and are sit-
ting properly.
GWARNING
The seat belt does not offer the intended level of protection if you have not moved the back-
rest to an almost vertical position. When brak-
ing or in the event of an accident, you could
slide underneath the seat belt and sustain
abdomen or neck injuries, for example. This
poses an increased risk of injury or even fatal injury.
Adjust the seat properly before beginning
your journey. Always ensure that the backrest
is in an almost vertical position and that the
shoulder section of your seat belt is routed
across the center of your shoulder.
GWARNING
Persons less than 5 ft (1.50 m) tall cannot
wear the seat belt correctly without an addi-
tional and suitable restraint system. If the
seat belt is not worn correctly, it cannot per-
form its intended protective function. An
incorrectly fastened seat belt can also cause
injuries, for example, in the event of an acci-
dent or when braking or changing direction
abruptly. This poses an increased risk of injury or even fatal injury.
For this reason, always secure persons under
5 ft (1.50 m) tall in suitable additional restraint
systems.
If a child younger than twelve years old and
under 5 ft (1.50 m) in height is traveling in the
vehicle:
Ralways secure the child in a child restraint
system suitable for this Mercedes-Benz vehi-
cle. The child restraint system must be appro-
priate to the age, weight and size of the child
Ralways observe the instructions and safety
notes on "Children in the vehicle"
(
Ypage 58) in addition to the child restraint
44Occupant safety
Safety

system manufacturer's installation and oper-
ating instructions
Ralways observe the instructions and safety
notes on the "Occupant classification system
(OCS)" (
Ypage 50)
GWARNING
The seat belts may not perform their intended protective function if:
Rthey are damaged, modified, extremely
dirty, bleached or dyed
Rthe seat belt buckle is damaged or
extremely dirty
Rthe Emergency Tensioning Devices, belt
anchorages or inertia reels have been modi-
fied.
Seat belts may be damaged in an accident,
although the damage may not be visible, e.g.
due to splinters of glass. Modified or damaged
seat belts may tear or fail, e.g. in an accident.
Modified Emergency Tensioning Devices
could accidentally trigger or fail to deploy
when necessary. This poses an increased risk
of injury or even fatal injury.
Never modify the seat belts, Emergency Ten-
sioning Devices, belt anchorages and inertia
reels. Make sure that the seat belts are
undamaged, not worn out and clean. Follow-
ing an accident, have the seat belts checked
immediately at a qualified specialist work-
shop.
Only use seat belts that have been approved for
your vehicle by Mercedes-Benz.
AMG Performance seat: this seat is designed
for the standard three-point seat belt. If you
install another multi-point seat belt, e.g. sport or
racing seat belts, the restraint system cannot
provide the best level of protection.
GWARNING
If you feed seat belts through the opening in
the seat backrest, the seat backrest may be
damaged or may even break in the event of an accident. This poses an increased risk of
injury or even fatal injury.
Only use the standard three-point seat belt.
Never modify the seat belt system.
Proper use of the seat belts
Observe the safety notes on the seat belt
(Ypage 44).
All vehicle occupants must be wearing the seat
belt correctly before beginning the journey. Also
make sure that all vehicle occupants are always
wearing the seat belt correctly while the vehicle
is in motion.
When fastening the seat belt, always make sure
that:
Rthe seat belt tongue is only inserted to the belt buckle belonging to that seat.
Rthe seat belt is tight across your body.
Avoid wearing bulky clothing, e.g. a winter
coat.
Rthe seat belt is not twisted.
Only then can the forces which occur be dis-
tributed over the area of the belt.
Rthe shoulder section of the belt is always
routed across the center of your shoulder.
The shoulder section of the belt must not
come into contact with your neck or be routed
under your arm. Where possible, adjust the
seat belt to the appropriate height.
Rthe lap belt passes tightly and as low down as
possible across your lap.
The lap belt must always be routed across
your hip joints and not across your abdomen.
This applies particularly to pregnant women.
If necessary, push the lap belt down to your
hip joint and pull it tight using the shoulder
section of the belt.
Rthe seat belt is not routed across sharp, poin-
ted or fragile objects.
If you have such items located on or in your
clothing, e.g. pens, keys or eyeglasses, store
these in a suitable place.
Ronly one person is using a seat belt at a time.
Infants and children must never travel sitting
on the lap of a vehicle occupant. In the eventof an accident, they could be crushed
between the vehicle occupant and seat belt.
Robjects are never secured with a seat belt if
the seat belt is also being used by one of the
vehicle's occupants.
Also ensure that there are never objects
between a person and the seat, e.g. cushions.
Seat belts are only intended to secure and
restrain vehicle occupants. Always observe the
"Loading guidelines" for securing objects, lug-
gage or loads (
Ypage 273).
Occupant safety45
Safety
Z

Fastening and adjusting the seat belts
Observeth esafet ynote son th eseat belt
(Ypage 44) and th enote son correct use of seat
belt s (Ypage 45) .
If th ecente rrear seat belt is bein gused, also
observ eth einformation about th eseat belt for
th ecente rrear seat (
Ypage 46).
Basic illustration
XAdjustth eseat (Ypage 95).
The seat backrest must be in an almost
upright position .
XPull theseat belt smoothly from th ebelt outlet
and engage belt tongue ;intobelt
buckle :.
The seat belt on th edriver’s seat and th e
front-passenger seat may be tightened auto -
matically, see "Belt adjustment"
(
Ypage 46).
XIf necessary, pull up on th eshoulder section
of th eseat belt to tighten th ebelt across your
body.
The shoulder section of th eseat belt must
always be routed across th ecente rof th eshoul-
der .Adjus tth ebelt outlet if necessary.
XTo raise: slide thebelt outlet up.
The belt outlet will engage in various posi-
tions.
XTo lower :hold belt outlet release =and slide
th ebelt outlet down .
XLet go of belt outlet release =in th edesired
position and mak esure that th ebelt outlet
engages.
All seat belt sexcep tth edriver' sseat belt are
equipped wit h aspecial seat belt retracto rto
securel yfaste nchild restrain tsystems in th e
vehicle. Further information can be foun dunder
"Special seat belt retractor" (
Ypage 58).
Seat belt for the center rear seat
If theleft-han drear seat backrest is folded down
and bac kup again ,th erear cente rseat belt may
lock. The seat belt can then no tbe pulled out .
XTo releaseth erea rcenter sea tbelt :pull
th eseat belt out approximately 1in (25 mm )
at th ebelt outlet on th ebackrest and then
release it again .
The seat belt is retracte dand released.
Releasing seat belts
!Mak esure that th eseat belt is fully rolled up.
Otherwise, th eseat belt or belt tongue will be
trapped in th edoor or in th eseat mechanism .
This could damag eth edoor ,th edoor trim
panel and th eseat belt .Damaged seat belt s
can no longer fulfill their protective function
and must be replaced. Visit aqualified spe-
cialist workshop.
XPress th erelease butto nin th ebelt buckle,
hold th ebelt tongue firmly and guide th ebelt
back.
Seat belt adjustment
The seat-belt adjustmen tis an integral part of
th ePRE-SAF E®convenience function .This func-
tion adjust sth edriver' sand front-passenger
seat belt to th eupper body of th eoccupants.
The belt strap is tightened slightly when :
Rthebelt tongue is engage din th ebuckle and
Rth eignition is switched on
The seat-belt adjustmen twill apply acertai n
retraction force if any slac kis detected between
th evehicl eoccupant and th eseat belt .Do no t
hold on to th eseat belt tightly while it is adjust -
ing .
You can activat eand deactivat eth eseat-belt
adjustmen tfunction usin gth emultimedia sys-
tem. Information on activating and deactivating
th eseat-belt adjustmen tfunction can be foun d
in th eDigital Operator's Manual.
Belt warning for the driver and front
passenger
The 7 seat belt warning lamp in th einstru-
men tcluste ris areminder that all vehicl eoccu-
pants must wear their seat belts. It may ligh tup
continuously or flash. In addition ,there may be
a warning tone .
46Occupant safety
Safety

Regardlessof whether th edriver' sseat belt has
already been fastened, th e7 seat belt warn -
ing lamp lights up for six seconds eac htime th e
engin eis started. If ,after six seconds, th edriver
or front-passenger seat belt has no tbeen fas -
tene dand th edoor sare closed, th e7 seat
belt warning lamp lights up. As soo nas th edriv -
er' sand front-passenger seat belt sare fastene d
or afron tdoor is opened again ,th e7 seat
belt warning lamp goes out .
If th edriver' sseat belt is no tfastene dafter th e
engin eis started, an additional warning tone will
sound. The warning tone switches off after six
seconds or once th edriver' sseat belt is fas -
tened.
If th evehicle's spee dexceeds 15 mph
(25 km/h) once and th edriver' sand front-
passenger seat belt sare no tfastened, awarning
tone sounds. Awarning tone also sounds wit h
increasing intensit yfor 60 seconds or until th e
driver or fron tpassenger hav efastene dtheir
seat belts.
If th edriver or fron tpassenger unfasten their
seat belt sduring th ejourney, th eseat belt warn -
ing is activated again .
Air bags
Introduction
The installation poin tof an air bag can be rec -
ognized by th eAI R BA Gsymbol.
An air bag complements th ecorrectl yfastene d
seat belt .It is no substitut efor th eseat belt .The
air bag provide sadditional protection in appli-
cable acciden tsituations.
Not all air bags are deployed in an accident. The
differen tair bag systems function independ-
entl yfrom on eanother (
Ypage 54).
However, no system available today can com-
pletely eliminate injurie sand fatalities.
It is also no tpossibl eto rule out aris kof injury
caused by an air bag due to th ehigh spee dat
whic hth eair bag mus tbe deployed.
Important safety notes
GWARNIN G
If you do no tsit in th ecorrec tseat position ,
th eair bag canno tprotect as intended and
could eve ncaus eadditional injury when
deployed. This poses an increased ris kof
injury or eve nfatal injury.
To avoi dhazardous situations, always mak e
sur ethat all of th evehicle's occupants:
Rhav efastene dtheir seat belt scorrectly,
includin gpregnant women
Rare sitting correctl yand maintai nth egreat-
est possibl edistanc eto th eair bags
Rfollow th efollowin ginstruction s
Always mak esur ethat there are no objects
between th eair bag and th evehicle's occu-
pants .
RAdjus tth eseat sproperly before beginning
your journey. Always mak esur ethat th eseat
is in an almost upright position .The center of
th ehead restrain tmus tsupport th ehead at
about eye level.
RMov eth edriver' sand front-passenger seat s
as far bac kas possible. The driver' sseat posi-
tion mus tallow th evehicl eto be driven safely.
ROnly hold th esteering whee lon th eoutside .
This allows th eair bag to be fully deployed.
RAlways lean against th ebackrest while driv -
ing .Do no tlean forwards or lean against th e
door or side window. You may otherwise be in
th edeploymen tarea of th eair bags .
RAlways keep your fee tin th efootwell in fron t
of th eseat .Do no tput your fee ton th edash -
board, for example. Your fee tmay otherwise
be in th edeploymen tarea of th
ea
ir bag.
RFo rthis reason ,always secure person sless
than 5ft (1.5 0m) tall in suitable restraint sys-
tems. Up to this height, the seat belt cannot
be worn correctly.
If a child is traveling in your vehicle, also
observe the following notes:
RAlways secure children under twelve years of
age and less than 5 ft (1.50 m)tall in suitable
child restraint systems.
RChild restraint systems should be installed on
the rear seats.
ROnly secure a child in a rearward-facing child
restraint system on the front-passenger seat
when the front-passenger front air bag is
deactivated. If the PASSENGER AIR BAG OFF
indicator lamp is permanently lit, the front-
Occupant safety47
Safety
Z

passenger front air bag is deactivated
(Ypage 43).
RAlways observe the instructions and safety
notes on the "Occupant Classification System
(OCS)" (
Ypage 50) and on "Children in the
vehicle" (Ypage 58) in addition to the child
restraint system manufacturer's installation
and operating instructions.
Objects in the vehicle interior may prevent
an air bag from functioning correctly. Before
starting your journey and to avoid risks resulting from the speed of the air bag as it deploys, make
sure that:
Rthere are no people, animals or objects
between the vehicle occupants and an air
bag.
Rthere are no objects between the seat, door
and B-pillar.
Rno hard objects, e.g. coat hangers, hang on
the grab handles or coat hooks.
Rno accessories, such as cup holders, are
attached to the vehicle within the deployment
area of an air bag, e.g. to doors, side windows,
rear side trim or side walls.
Rno heavy, sharp-edged or fragile objects are in
the pockets of your clothing. Store such
objects in a suitable place.
GWARNING
If you modify the air bag cover or affix objects
such as stickers to it, the air bag can no longer
function correctly. There is an increased risk
of injury.
Never modify an air bag cover or affix objects
to it.
GWARNING
Sensors to control the air bags are located in
the doors. Modifications or work not per-
formed correctly to the doors or door panel-
ing, as well as damaged doors, can lead to the
function of the sensors being impaired. The air
bags might therefore not function properly
anymore. Consequently, the air bags cannot
protect vehicle occupants as they are
designed to do. There is an increased risk of
injury.
Never modify the doors or parts of the doors.
Always have work on the doors or door pan-
eling carried out at a qualified specialist work-
shop.
Front air bags
!Do not place heavy objects on the front-
passenger seat. This could cause the system
to identify the seat as being occupied. In the
event of an accident, the restraint systems on
the front-passenger side may be triggered
and have to be replaced.
Driver's air bag :deploys in front of the steer-
ing wheel. Front-passenger front air bag ;
deploys in front of and above the glove box.
When deployed, the front air bags offer addi-
tional head and thorax protection for the occu-
pants in the front seats.
The PASSENGER AIR BAG OFF indicator lamp
informs you about the status of the front-
passenger front air bag (
Ypage 43).
The front-passenger front air bag will only
deploy if:
Rthe system, based on the OCS weight sensor
readings, detects that the front-passenger
seat is occupied (
Ypage 50). The
PASSENGER AIR BAG OFF indicator lamp is
not lit (
Ypage 50)
Rthe restraint system control unit predicts a
high accident severity
48Occupant safety
Safety