2020 MERCEDES-BENZ GLS SUV warning

R
The trailer cables or adap ter plugs ha vebeen
re mo ved.
Multimedia sy stem:
4 © 5
Settings 5
Quick access
Extending the ball neck fully electrically #
Select Ü.
The Trailer coupling extending… display mes‐
sage will appear on the multifunction displa y.
The ball neck will extend fully electrically. #
Wait until the ball neck has loc ked in place.
If th e ball neck is not securely loc ked in place,
th eCheck trailer hitch lock message will appear
on the multifunction displa y.
Re tracting the ball ne ckfully electrical ly#
Select Ü.
The Trailer coupling extending… displaymes‐
sage will appear on the multifunction displa y.
The ball neck will retract fully electrically. #
Wait until the ball neck has loc ked in place. If
th e ball neck is not securely loc ked in place,
th eCheck trailer hitch lock message will appear
on the multifunction displa y. Coupling/uncoupling a trailer
&
WARNING Risk of inju ryfrom theve hicle
le ve l being changed
Ve hicles with le vel control sy stem: the
ve hicle le vel may be changed unin tentional ly,
e.g. by ot her persons. You may become trap‐
ped if you couple up or uncouple a trailer
while theve hicle le vel is changing. In addi‐
tion, other people could become trapped if
th eir limbs are between theve hicle body and
th e tyres or underneath theve hicle.
When coupling up or uncoupling a trailer,
make sure that: #
The doors or tailgate are not opened or
closed. #
You do not initiate the le vel control sys‐
te m and do not operate theDY NA MIC
SELECT switch. #
Do not lock or unlock theve hicle. Re
quirements:
R The ball neck is extended and engaged in a
secu rely loc ked position.
Tr ailers with a 7-pin plug can be connec tedto
th eve hicle with thefo llowing adap ters:
R Adapter plug
R Adapter cable
The trailer will be cor rectly de tected bytheve hi‐
cle only if thefo llowing conditions are me t:
R The trailer is connected cor rectl y.
R The trailer lighting sy stem is in working
order.
The functions of thefo llowing sy stems will be
af fected bya cor rectly connected traile r:
R ESP ®
trailer stabilisation
R Trailer Manoeuvering Assist
R Active Lane Keeping Assist
R Parking Assist PARKTRONIC
R Active Parking Assist 298
Driving and parking

R
Blind Spot Assi stor Active Blind Spot Assi st
R Drive AwayAssi st
R Cross Traf fic Alert
R Reversing camera
R 360° camera
R AIRMATIC
R E-AC TIVE BODY CONTROL
Coupling up a trailer
* NO
TEDama getothest ar ter battery due
to full dischar ge Charging
the trailer battery using the po wer
supply of the trailer can damage thest ar ter
batter y. #
Do not use theve hicle's po wer supply
to charge the trailer batter y. #
Remo vethe co ver cap from the ball head and
st ore it in a safe place. #
Position the trailer on a le vel sur face behind
th eve hicle and couple it up totheve hicle. #
Open the soc ket cap. #
Inse rtthe plug with lug 1in groo ve3 on
th e soc ket. #
Turn bayonet coupling 2totheright as far
as it will go. #
Let the cap engage. #
Secure the cable tothe trailer with cable ties
(only if you are using an adap ter cable). #
Make sure that the cable is alw ays slack for
ease of mo vement during cornering. Under
thefo llowing conditions, a message may
appear on the multifunction display even if the
trailer has been connected cor rectly:
R LEDs ha vebeen ins talled in the trailer light‐
ing sy stem.
R The cur rent has fallen below the trailer light‐
ing sy stem's minimum cur rent (50 mA).
% Accessories can be connected tothe perma‐
nent po wer supp lyup to180 W and tothe
po we r supp lythat is swit ched on via the igni‐
tion loc k.
Un coupling a trailer &
WARNING Risk of being crushed and
becoming trapped when uncoupling a
trailer
When uncoupling a trailer wi than engaged
ine rtia-activated brake, your hand may
become trapped between theve hicle and the
trailer dr awbar. #
Do not uncouple trailers with an
engaged overrun brake. Driving and pa
rking 299

*
NO
TEDama gewhen uncoupling in a
st ate of overrun Uncou
pling in a state of overru n can dama ge
th eve hicle. #
Do not uncouple trailers with an
engaged overrun brake. &
WARNING Risk of becoming trapped
when disconnecting the trailer cable
Ve hicles with le vel control sy stem: The
ve hicle may lo wer when the trailer cable is
disconnected.
This could result in you or other people
becoming trapped if your or their limbs are
between theve hicle body and the tyres or
underneath theve hicle. #
Make sure that nobody is unde rneath
th eve hicle or in the immediate vicinity
of the wheel ar ches when you discon‐
nect the trailer cable. *
NO
TEDama getothere ar bumper from
ins talling adap ter cables or adapte r plugs The
following parts could be damaged when
swiveling the ball neck fully electrically:
R Bumper
R Adapter cable
R Adapter plug #
Alw aysre mo vethe adap ter cable or
adapte r plug before swive lingthe 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 cap 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. 300
Driving and parking

Note
s onthe instrument display and on-
board compu ter &
WARNING Risk of accident due toan
instrument display malfunction
If th e instrument display has failed or mal‐
functioned, the function restrictions applying
to saf etyre leva nt sy stems are not visible.
The operating saf ety of your vehicle may be
impaired. #
Drive on carefull y.#
Have theve hicle checked immediately
at a qualified specialist workshop. &
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. *
NO
TEMercedes-AMG vehicles #
Obser vethe no tes in the Supplement.
Yo u could otherwise failto recognise
dangers. Yo
u must obse rveth e legal requirements forthe
country in whi chyou are cur rently driving when
operating the on-board computer.
The on-board computer sho wsonly display mes‐
sages and warnings from specific sy stems on
th e multifunction displa y.Yo u must therefore
ensure that your vehicle is alw aysre liable.
If th e operating saf ety of your vehicle is
impaired, park theve hicle immediately and
safel y.Con tact a qualified specialist workshop. 304
Instrument display and on-board computer

R
Navigation #
Onthe cor responding menu, use the left-
hand Touch Control toscroll tothe end of the
list. #
Press the left-hand Touch Control.
The selected menu will be displ ayed full-
screen. Overview of what is shown on
the multi‐
function display
Displa yson the multifunction display
u Active Parking Assist (/ page 289)
é Parking Assist PARKTRONIC deacti vated
( / page 287)
î DSR (/ page244)
h Cruise control (/ page 233)
È Limi
ter (/ page 234)
ç Active Dis tance Assi stDISTRONIC
(/ page 236)
ê Active Brake Assi st (/ page 248)
à Active Steering Assist (/ page246) ¬
Active Stop-and-Go Assist (/ page243)
à Ac
tive Lane Keeping Assist (/ page 260)
è ECO
start/ stop function (/ page197)
ë HOLD fu
nction (/ page 230)
_ Ad
aptive Highbeam Assist Plus
(/ page 161)
ð Maximum permissible speed exceeded
(for cer tain countries only)
Ve hicles with Speed Limit Assis t:de tected
instructions and traf fic signs (/ page 253).
Ve hicles with Traf fic Sign Assis t:de tected
instructions and traf fic signs (/ page 255).
Fo r an overview of the indicator and warning
lamps, see (/ page 490). Head-up display
Fu
nction of the head-up display *
NO
TEMercedes-AMG vehicles #
Obser vethe no tes in the Supplement.
Yo u could otherwise failto recognise
dangers. The head-up displ
ayprojects thefo llowing infor‐
mation into the driver's field of vision abo vethe
cockpit, forex ample:
R The vehicle speed
R Information from the navigation sy stem
R Information from the driving sy stems and
driving saf ety sy stems
R Some warning messages
Depending on theve hicle's equipment, dif fere nt
content can be shown in theth re e areas of the
head-up display (/ page 309).308
Instrument display and on-board computer

Selecting what
the head-up display sho ws(Example)
1
Toswitch the head-up display on/off
2 Left display area
Navigation sy stem
Inclination, gradient and compass
Av erage consum ption
G-me ter
3 Central displ ayarea
Speedom eter
Set speed in the driver assis tance sy stem,
e.g. cruise control Wa
rnings from driver assis tance sy stems,
e.g. dis tance warning
4 Right display area
Traf fic Sign Assi st
Ve hicle le vel
Dif fere ntial
Assi stant display
5 Toadjust the position, brightness and lo wer
display area
6 Index points
7 Lowe r display area (e xamp le: left display
area)
Display areas 2to4 that are not requ ired can
be hidden.
% In audio mode, thest ation name or track will
be shown temp orarily when the audio source
is being actively operated. In addition, the
latest calls will be displa yed when thete le‐
phone list on the instrument display is
actively operated. #
Toselect a displa y:swipe upwards on the
left-hand Touch Control. #
Press the left-hand Touch Control. Swit
ching the head-up display on/off via the
mu ltimedia sy stem Multimedia sy
stem:
4 © 5
Settings 5
Quick access #
Select HUD.
The head-up-display is activated. 310
Instrument display and on-board computer

Overview and operation
Note
s onthe MBUX multimedia sy stem &
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. Yo
u must obse rveth e legal requirements forthe
country in whi chyou are cur rently driving when
operating the multimedia sy stem. Overview of
the MBUX multimedia sy stem 1
Touch Control and cont rol panel forthe
MBUX multimedia sy stem
2 Media display with touch functionality
3 Touchpad
4 Controller
Turn: adjusts thevo lume Press brief
ly: switches the mute function
on/off
Press and hold: switches the multimedia sys‐
te m or media display on or off
5 Buttons for navigation, radio/media and
te lephone
6 Buttons forve hicle functions/sy stem set‐
tings and favo urites/ themes
Fu rther operating options:
R Conducting a voice dialogue with LINGUA‐
TRONIC.
R Operating functions con tact-free wi th the
MBUX Interior Assis tant.
% You can find fur ther information about oper‐
ation as well as about applications and serv‐
ices in the Digital Owner's Manual.
Anti-theft pr otection
This device is equipped with tech nical pr ovisions
to protect it against theft. More de tailed informa‐
tion about anti-theft pr otection can be obtained
at a qualified specialist workshop. MBUX multimedia sy
stem 311

Fu
nctions of LINGU ATRO NIC Wi
th LINGU ATRO NIC, various applications in the
MBUX multimedia sy stem are operable using
vo ice input. LINGU ATRO NIC is operational
appr oximately thirty seconds af terth e ignition is
switched on and is available forth e driver's seat
and front passenger seat.
The following multimedia sy stem applications
can be operated:
R Navigation
R Telephone
R Radio and TV
R Media pla yer
R Messages
R Vehicle functions St
arting LING UATRONIC #
Press rocker switch 1up.
or #
Say "Hello Mercedes". Overview of
the MBUX Interior Assistant &
WARNING Risk of inju ryfrom the cam‐
era's laser radiation
This product uses a classification 1 laser sys‐
te m. If the housing is opened or damaged,
laser radiation may damage your retina. #
Do not open the housing. #
Alw ays ha vemaintenance workand
re pairs car ried out byaqu alified spe‐
cialist workshop. This device is a class 1 laser product in accord‐
ance with DIN EN 60825-1:20
14
The camera is located in theove rhead control
panel.
If th eve hicle is fitted wi th the MBUX Interior
Assis tant, selected functions of the multimedia
sy stem can be operated conta ct-free. The MBUX
Interior Assi stant can dif fere ntia tebetween
driver and front passenger interactions and
de tects specific hand positions (poses). MBUX multimedia sy
stem 315