ECU MERCEDES-BENZ GLC COUPE 2019 Repair Manual

#
Alw aysre mo vethe adap ter cable or
adapte r plug before swinging the ball
neck fully electrically. #
Secure the trailer against rolling away. #
Disconnect the electrical connection
between theve hicle and the trailer. #
Uncouple the trailer. #
Place the co ver on the ball head. Bicycle
rackfunction &
WARNING Risk of an accident when
using the bicycle rack incor rectly
The bicycle rack may become de tach ed from
th eve hicle in thefo llowing cases:
R the permissible load capacity of the
trailer hitch is exceeded.
R the bicycle rack is used incor rectl y.
R the bicycle rack is secured tothe ball
neck beneath the ball head. Obser
vethefo llowing foryo ur ow n sa fety
and that of other road users:
R always adhere tothe permissible load
capacity of the trailer hitch.
R only use the bicycle rack totranspo rt
bicycles.
R always mount the bicycle rack properly by
attaching tothe ball head and the ball
neck guide pin, if possible.
R when transporting four bic ycles, alw ays
use bic ycle rack s which ha veadditional
suppo rton the ball neck guide pin.
R only use bicycle rack s appr ovedby
Mercedes-Benz.
R always obser vethe bicycle rack operating
instructions. *
NO
TEDama geto, or cra cks on, the
trailer hitch due tounsuitable bic ycle
ra ck s or bicycle rack s being used incor‐
re ctly #
use only bicycle rack s appr ovedby
Mercedes-Benz. Tr
ailer hit ch(examp le with additional guide pin) Driving and parking
267

Depending on
the bicycle rack 's design, dif fere nt
numbe rsof bicycles can be transpor ted.
The following bicycle rack designs are possible:
R When mounted byattaching tothe ball head
1, the maximum load capacity is 75kg.Up
to thre e bicycles can be transpor ted.
R When mounted on the ball head 1and the
guide pin 2,the maximum load capacity is
10 0kg .Up tofour bic ycles can be transpor‐
te d.
The load capacity is calculated from thewe ight
of the bicycle rack and the bicycle rack load.
The vehicle's driving characteristics will change
when a bicycle rack isfitted. Adapt your driving
st yle according ly. Drive carefully and maintain a
sa fe dis tance.
When using a bicycle rack , set the tyre pressure
fo r increased load on there ar axle of theve hicle.
Fu rther information on the tyre pressure can be
fo und in the tyre pressure table (/ page 504). Note
s on loading
The lar gerth e dis tance between the load's
cent reof gr avity and the ball head, the greater
th e load on the trailer hitch.
Obser vethefo llowing no tes:
R Mount heavy bicycles as close totheve hicle
as possible.
R Alw ays distribute the load on the bicycle rack
as eve nly as possible across theve hicle's
longitudinal axis.
Mercedes-Benz recommends removing all
de tach able parts from bicycles (e.g. bask ets,
ch ild seats, rech arge able bat teries) before load‐
ing them onto the bicycle rack . This will impr ove
th e aerodynamic resis tance and centre of gr avity
of the bicycle rack.
Alw ays secure the bicycles topreve ntthem from
moving around and check them at regular inter‐
va ls to ensure that they are secure.
Do not use tarp aulins or other co vers. The driv‐
ing characteristics and rear view may be
impaired. In addition, aerodynamic resis tance
and the load on the trailer hitch will increase. Load distribution on
the bicycle rack
1 Vertical dis tance between centre of gr avity
and ball head
2 Horizon tal dis tance between centre of gr av‐
ity and ball head
3 The centre of gr avity is on theve hicle's
centre axis 268
Driving and parking

R
Limiter (/ page213)
R Active Dis tance Assi stDISTRONIC
(/ page 216)
* NO
TEEngine dama gedue toexc essively
high engine speeds The engine will be damaged if
you drive with
th e engine in theov errevving range. #
Do not drive wi th the engine in theove r‐
re vving range. The fuel supply will be inter
rupted toprotect the
engine when there d mark on there v counter
(o ve rrev ving range) is reached.
During no rmal operating conditions, the coolant
te mp erature display 4may rise to120 °C. &
WARNING Danger of bu rns when open‐
ing the bonn et
If yo u open the engine bonn etwhen the
engine has overheated or during a fire inthe
engine compartment, you could come into
contact with hot gases or other escaping
operating fluids. #
Before opening the bonn et, allow the
engine tocool down. #
Intheeve nt of a fire inthe engine com‐
partment, keep the engine bonn et
closed and call thefire service. Ve
hicles with a 48 V on-board electrical sys‐
te m (EQ Boo sttech nology) R
POWER 1shows th e electrical drive sup‐
port as a percentage.
R CHARGE 2showsthe electric mo tor's recu‐
peration po wer per form ance as a percent‐
age. õ
showsthe drive sy stem's operational read‐
iness. Overview of
the but tons on thest eering
wheel 1
¤ Back/Home button (press and hold),
on-board computer
2 Touch Control, on-board co mputer
3 Control panel for cruise control/limiter or
Ac tive Dis tance Assi stDISTRONIC
4 Control panel for MBUX multimedia sy stem:
£ LINGU ATRO NIC
ß Displa ysfavo urites In
stru ment Display and on-board computer 271

Note
s on operating saf ety&
WARNING Risk of di stra ction from infor‐
mation sy stems and communications
equipment
If yo u operate information and communica‐
tion equipment integ rated in theve hicle
when driving, you will be distracted from the
traf fic situation. This could also cause youto
lose control of theve hicle. #
Only operate this equipment when the
traf fic situation permits. #
Ifyo u cannot be sure of this, stop the
ve hicle whilst paying attention toroad
and traf fic conditions and ope rate the
equipment with theve hicle stationar y. &
WARNING Risk of an accident from
ope rating mobile communication equip‐
ment while theve hicle is in motion
Mobile communications devices distract the
driver from the traf fic situation. This could also cause
the driver tolose control of the
ve hicle. #
Asthe driver, only operate mobile com‐
munications devices when theve hicle is
st ationar y. #
As a vehicle occupant, only use mobile
communications devices in the areas
intended forth is purpose, e.g. in the
re ar passenger compartment. &
WARNING Risk of inju rydue toobjects
being stowed incor rectly
If objects in theve hicle interior are stowed
incor rectly, they can slide or be thrown
around and hit vehicle occupants. In addi‐
tion, cup holders, open stowage spaces and
mobile phone recep tacles cannot al ways
re tain all objects they contain.
The reis a risk of injur y,particularly in the
ev ent of sudden braking or a sudden change
in direction. #
Alw aysstow objects so that they can‐
not be throw n around in su chsitua‐
tions. #
Alw ays make sure that objects do not
pr otru de from stowage spaces, luggage
nets or stowage nets. #
Close the loc kable stow age spaces
before starting a journe y. #
Alw aysstow and secure heavy, hard,
poin ted, sharp-edged, fragile or bulky
objects in the boot/load compartment. Fo
ryo ur ow n sa fety, al ways obser vethefo llow‐
ing points when operating mobile communica‐
tions equipment and especially your voice con‐
trol sy stem:
R Obser vethe legal requ irements forth e coun‐
try in which you are driving.
R While driving, on ly operate mobile communi‐
cations equipment and your voice control
sy stem when the tra ffic conditions permit it.
Yo u may otherwise be distracted from the
traf fic conditions and cause an accident,
inju ring yourself and others. 284
LINGU ATRO NIC

cle. A maximum of
thre e devices can be con‐
nected with the hotspot at the same time.
% The use of theve hicle data tariff by extern al
devices is not available in all countries.
To estab lish a connection, you can use thefo l‐
lowing me thods:
R WPS PIN
The connection toa secure Wi-Fi network is
made via a PIN.
R WPS PBC
The connection toa secure Wi-Fi network is
made bypressing a button (push button).
R Security key
The connection toa secure Wi-Fi network is
made via a secu rity key.
Setting up Wi-Fi
Requ irements:
R Toset up theWi -Fi connection of the mul‐
timedia sy stem with new devices: there is
no communication module ins talled.
R The device tobe connec ted supports one of
th eth re e means of connection described. Multimedia sy
stem:
4 © 5
Settings 5
System
5 Wi-Fi & Bluetooth
Ac tivating/deactivating Wi-Fi #
Select Wi-Fi.
If Wi -Fi is switched on, you can connect the
multimedia sy stem with extern al hotspots. If
Wi -Fi is deacti vated, communication via Wi-Fi
to all devices is inter rupte d. This also means
th at a connection tothe communication
module cann otbe es tablished. Then some
functions such as dynamic route guidance
with Live Traf fic Information are not availa‐
ble.
Connecting the multimedia sy stem with a
new device via Wi-Fi
This function is available if a communication
module is not ins talled.
The type of connection es tablished must be
selected on the multimedia sy stem and on the
device tobe connec ted.
% The connection procedure may dif fer
depending on the device. Follow the instruc‐ tions
that are shown in the displa y.Fu rther
information (see the manufacturer's operat‐
ing instructions). #
Select Internet settings . #
Select Connect via Wi-Fi. #
Select Add hotspot.
Connecting using a security key #
Select the options rofthe desired Wi-Fi
networ k. #
Select Connect using security key . #
Have the security key displa yed on the device
to be connec ted (see the manufacturer's
operating instructions). #
Ente rth is security key on the multimedia sys‐
te m. #
Confirm the entry with¡.
% All devices support a security key as a
means of connection.
Connecting using a WPS PIN #
Select the options rofthe desired Wi-Fi
networ k. MBUX multimedia sy
stem 343

#
Select Connect using WPS PIN input .
The multimedia sy stem generates an eight-
digit PIN. #
Enter this PIN on the device tobe connec ted. #
Confirm the entry.
Connecting using a but ton#
Select the options rofthe desired Wi-Fi
networ k. #
Select Connect via WPS PBC .#
Select "Connect via WPS PBC" in the options
on the device tobe connec ted (see the man‐
ufacturer's operating instructions). #
Press the WPS button on the device tobe
connec ted. #
Select Continue inthe multimedia sy stem.
Ac tivating automatic connection #
Select Connect via Wi-Fi .#
Select the options rofthe desired Wi-Fi
networ k. #
Activate Permanent Internet connection .Connecting with a known
Wi-Fi #
Select Connect via Wi-Fi . #
Select a Wi-Fi networ k.
The connection is es tablished again.
Setting up a Wi-Fi hotspot
Multimedia sy stem:
4 © 5
Settings 5
System
5 Wi-Fi & Bluetooth
Configuring the multimedia sy stem as a Wi-
Fi hotspot
The type of connection es tablished depends on
th e device tobe connec ted. The function must
be suppor tedby the multimedia sy stem and by
th e device tobe connec ted. The type of connec‐
tion es tablished must be selected on the multi‐
media sy stem and on the device tobe connec‐
te d. #
Select Vehicle hotspot. #
Select Connect device to vehicle hotspot .
Connecting using WPS PIN generation #
Select Connect using WPS PIN generation. #
Ente rth e PIN shown in the media display on
th e device tobe connec ted and con firm.
Connecting using WPS PIN entry #
Select Connect using WPS PIN input. #
Enterth e PIN that is shown on theex tern al
device's display on the multimedia sy stem.
Connecting using a button #
Select Connect via WPS PBC. #
Press the push button on the device tobe
connec ted (see the manufacturer's operating
instructions). #
Select Continue.
Connecting using a security key #
Select Connect device to vehicle hotspot .
A secu rity key is displa yed. #
Select theve hicle from the device tobe con‐
nec ted. The vehicle is displa yed with theMB
Hotspot XXXXX network name. #
Ente rth e security key which is shown in the
media display on the device tobe connec ted. #
Confirm the entry. 344
MBUX multimedia sy stem

Connecting using NFC
#
Select Connect via NFC. #
Activate NFC on the mobile device (see the
manufacturer's operating instructions). #
Bring the mobile device into the NFC area of
th eve hicle . #
Select Finished.
The mobile device is now connected tothe
multimedia sy stem hotspot via NFC.
Generating a new security key#
Select Vehicle hotspot. #
Select Generate security key .
A connection will be es tablished with the
newly crea ted security key. #
Tosave a security key:select Save.
When a new security key is sa ved, all existing
Wi -Fi connections are then disconnected. If
th eWi -Fi connections are being re-es tab‐
lished, the new security key must be en tere d. Ac
tivating/deactivating child saf ety lock Multimedia sy
stem:
4 System 5
Parental control
Locking an extern al device #
Select an extern al device. #
Select Lock.
The device connec ted via the MBUX Touch
app is loc ked or unloc ked. Sy
stem language Note
s onthe sy stem language
This function allo wsyouto determ ine the lan‐
guage forth e menu displa ysand the navigation
announcements. The selected language af fects
th ech aracters available for entr y.The navigation
announcements are not available in all lan‐
guages. If a language is not available, the naviga‐
tion announcements will be in Engl ish.Setting
the sy stem language
Multimedia sy stem:
4 © 5
Settings 5
System
5 Language #
Set the language.
% Ifyo u are using Arabic map data, thete xt
information can also be shown in Arabic on
th e navigation map. Todo so, select 

and
your vehicle's communication module.
These will con veniently be sent to you via the
mobile phone connection in your vehicle and, in
many cases, ins talled automaticall y.Yo u can
monitor thest atus of your updates at any time
on the Mercedes me por tal and find information
about po tential inno vations.
Yo ur advantages at a glance:
R con veniently recei vesoftware update s via
th e mobile phone network
R impr ovesth equ ality and availability of
Mercedes me connect services
R keeps your multimedia sy stem and communi‐
cation module up-to-date
Fu rther information about software updates can
be found at http://me.mercedes-benz.com
Pe rforming a software upda te
Requ irements:
R For online updates: an Internet connection
is es tablished (/ page 428).
R For automatic online updates: your vehicle
has a permanently ins talled communication
module. Multimedia sy
stem:
4 © 5
Settings 5
System
5 Software update
Au tomatically #
Activate Automatic online updates.
The upda tes will be downloaded and ins talled
automaticall y.
The cur rent status of the updates is dis‐
pla yed.
Manually #
Deactivate Automatic online updates. #
Select an update from the list and start the
update.
Ac tivating the so ftwa reupdate #
Restart the sy stem.
The modifications from the software update
will be active.
Fu nction of important sy stem upda tes
Impor tant sy stem updates may be necessary for
th e security of your multimedia sy stem's data. Ins
tallth ese updates, or else the security of your
multimedia sy stem cann otbe ensured.
% If automatic software updates are activated,
th e sy stem updates will be downloaded auto‐
matically (/ page 348).
As soon as an update is available for download,
a cor responding message appears onthe media
displa y.
Yo u ha vethefo llowing selection options:
R Accept and install
The update will be downloaded in the back‐
ground.
R Information
Information about the pending sy stem
update is displa yed.
R Later
The update can be downloaded manually at a
later time (/ page 348).
Deep sy stem upda tes
Deep sy stem updates access vehicle or sy stem
settings and can therefore only be car ried out 348
MBUX multimedia sy stem

Multimedia sy
stem:
4 © 5
Navigation 5
¡ 5
Traffic #
Select Provider information.
The logo of the service pr ovider for Live Traf‐
fi c Information is shown.
When the subscription for Live Traf fic Infor‐
mation has expired then in selected coun‐
tries FM RDS-TMC is available.
% Further information on Live Traf fic Informa‐
tion can be called up on the home screen
using Mercedes me & Apps (/page 424).
Re gis tering Live Traf fic Information
Requ irements:
R The vehicle is equipped with Live Traf fic
Information.
R You ha vea user account on the Mercedes
me website.
The Live Traf fic Information service must be reg‐
is te re d. This secures the full period of three
ye ars. #
Create a user account at Mercedes me at:
http://www.mercedes.me. A valid email
address is requ ired forth is. #
Regis terth eve hicle using theve hicle identifi‐
cation number (VIN). #
Tocar ryout there gistration yourself: con‐
nect theve hicle with your Mercedes me user
account in the Mercedes me por tal.
A code is sent tothe multimedia sy stem. #
Ente rth e code into the multimedia sy stem. #
Accept thege neral and specific term s of use. #
Registration in the Mercedes-Benz
service centre: have the connection car ried
out at a Mercedes-Benz service cent re.
Extending a Live Traf fic Information sub‐
scription
Re quirements:
R The vehicle is equipped with Live Traf fic
Information.
R You ha vea user account on the Mercedes
me website. #
Call up the Mercedes me website. #
Call up the Mercedes me user account. #
Switch tothe Mercedes me connect online
st ore via the linked vehicle. #
Select the Live Traf fic Information service. #
Select there ne wa l period. #
Addth e product tothe shopping bask et. #
Accept thege neral and specific term s of use.
Live Traf fic Information remains activated for
th e selected extension pe riod. Activation
begins on the date of extension.
Showing traf fic information
Re quirements:
R The Traffic display is switched on
(/ page 383).
R The following traf fic displ ays are switched on
(/ page 383):
Traffic incidents
Free-flowing traffic
Delay MBUX multimedia sy
stem 381

operating mobile communication equipment in
th eve hicle. &
WARNING Risk of inju rydue toobjects
being stowed incor rectly
If objects in theve hicle interior are stowed
incor rectly, they can slide or be thrown
around and hit vehicle occupants. In addi‐
tion, cup holders, open stowage spaces and
mobile phone recep tacles cannot al ways
re tain all objects they contain. The
reis a risk of injur y,particularly in the
ev ent of sudden braking or a sudden change
in direction. #
Alw aysstow objects so that they can‐
not be throw n around in su chsitua‐
tions. #
Alw ays make sure that objects do not
pr otru de from stowage spaces, luggage
nets or stowage nets. #
Close the loc kable stow age spaces
before starting a journe y. #
Alw aysstow and secure heavy, hard,
poin ted, sharp-edged, fragile or bulky
objects in the boot/load compartment. Obser
vethe additional information on stowing
mobile communications devices cor rectly:
R Loading theve hicle (/ page114)
Fu rther information can be obtained from a
Mercedes-Benz service centre or at: http://
www.mercedes-benz.com/connect. 398
MBUX multimedia sy stem