MERCEDES-BENZ GLS SUV 2022 Owners Manual

System limits
Cr
oss TraPc Alert is not available on inclines.
Cross TraPc Alert is not available when driving
with a trailer.
Activating/deactivating manoeuvring assistant
Multimedia system:
4 © 5
Settings 5
Assistance
5 Camera & parking 
Activate/deactivate Manoeuvring assistance.
% Manoeuvring assistant must be active for the
function of Dr

ive Away Assist (  page 296)
and Cross TraPc Alert (  page 297). Trailer Manoeuvring Assist
Function of Trailer Manoeuvring Assist
&
WARNING Risk of accident due t
o unsuita-
ble trailers
Trailers with a steered axle or a Nsh wheel
canno
t be used with Trailer Manoeuvring
Assist. Due to this, the trailer cannot be manoeuvred
in t
he desired direction and you can cause a
collision or the trailer can overturn. 
Only use Trailer Manoeuvring Assist with
tr
ailers with Nxed drawbars and axles. *
NOTE Damag
e to trailers with a stabilisa-
tion device against swerving In the case of trailers with a stabilisation
de
vice against swerving, the trailer or trailer
tow hitch could be damaged. 
If a trailer coupling with Trailer Manoeu-
vr

ing Assist is used, only use trailers
without a stabilisation device against
swerving. *
NOTE Damag
e due to overhanging loads
in front or drawbar installations The vehicle and the trailer may be damaged
dur

ing manoeuvring due to overhanging loads
at the front of the trailer or drawbar installa-
tions. 
Pay attention to overhanging loads or
dr

awbar installations while manoeuvring. Trailer Manoeuvring Assist assists you when
r

eversing with a trailer. By means of a turning
angle sensor in the trailer coupling, Trailer
Manoeuvring Assist monitors the articulation
angle between the vehicle and trailer and adjusts
it to a speciNed value.
Trailer Manoeuvring Assist is only an aid. It is not
a substitute for your attention to the surround-
ings. The responsibility for safe manoeuvring and
parking remains with you. Make sure that there
are no persons, animals or objects in the manoeu-
vring area while manoeuvring and parking in/exit-
ing parking spaces.
You can either enter the articulation angle value
directly via the multimedia system or use a
straightening manoeuvre. When carrying out a
straightening manoeuvre, the system calculates
the articulation angle automatically and straight-
ens the vehicle/trailer combination to the trailer's
current direction. 298
Driving and parking

Trailer Manoeuvring Assist must be taught-in
bef
ore it can adjust the articulation angle
(  page 299).
Observe the notes on towing a trailer
(  page 300).
System limits
Observe the system limits of the following func-
tions:
= Active Parking Assist ( page 292)
= 360° Camera ( page 284)
= Reversing camera ( page 282)
The system may be impaired or may not function
in the following situations: = The gradient is greater than approximately
15 %.
Using Trailer Manoeuvring Assist
Requirements: = The vehicle has been started and is stationary.
= A trailer has been detected.
= The gradient is less than approximately 15%. =
The electr ic parking brake is not applied.
Teaching in Trailer Manoeuvring Assist 
Drive forwards a short distance with the car/
tr
ailer combination.
The completed teach-in process is shown in
the media display.
% The maximum articulation angle depends on
t

he length of the trailer. This is calculated by
the system by driving the vehicle forwards,
including cornering. Before the length of the
trailer has been calculated, the maximum
articulation angle is approximately 23°. The
longer the trailer is, the higher the maximum
articulation angle (max. approximately 60°). Using Trailer Manoeuvring Assist

Engage reverse gear k. 
Press button 1.
The camer

a image is shown in the media dis-
play. 
To adjust the articulation angle: select

or

To activate the straightening manoeuvre:
select

Extending and retracting the ball neck fully electri-
call y &
WARNING Risk of accident due t
o the ball
neck not being engaged
If the ball neck is not engaged, the trailer may
come loose. 
Make sure that the ball neck securely
eng

ages and locks into place. *
NOTE Damag
e to the all-electric trailer
hitch due to additional pressure The all-electric trailer hitch could be mechani-
call
y damaged by applying additional pressure
when the ball neck is being extended or
retracted. 
Do not make the ball neck extend/
r

etract faster by applying additional pres-
sure. *
NOTE Incr
eased risk of damage to prop-
erty due to folded-out ball neck 
When the trailer is not coupled or the
bicy
cle rack is attached, fold in the ball
neck or, in the case of a fully electric
trailer hitch, retract the ball neck. *
NOTE Damag
e to the vehicle due to incor-
rect use of the trailer hitch When a trailer hitch is used to recover a vehi-
cle, t
he vehicle may be damaged in the proc-
ess. 
Use the trailer hitch only for pulling a
tr

ailer or attaching approved carrier sys-
tems (e.g. a bicycle rack). Requirements:
= The v

ehicle is secured against rolling away.
= The swivel range is clear.
= The trailer cables or adapter plugs have been
removed. Extending the ball neck fully electrically

Pull button 1.
Indicat or lamp 2 will Oash and the message
Trailer coupling extending


Wait until the ball neck has locked in place.
When indicat or lamp 2 is continuously lit, the
ball neck is securely locked in place.
If the ball neck is not securely locked in place,
indicator lamp 2 will Oash and the message
Check trailer hitch lock will appear on the
instrument display. Retracting the ball neck fully electrically

Pull button 1.
Indicat
or lamp 2 will Oash and the message
Trailer coupling extending

=
The tr ailer cables or adapter plugs have been
removed.
Multimedia system: 4 © 5
Settings 5
Quick access
Extending the ball neck fully electrically 
Select

=
T railer Manoeuvering Assist
= Active Lane Keeping Assist
= Parking Assist PARKTRONIC
= Active Parking Assist
= Blind Spot Assist or Active Blind Spot Assist
= Drive Away Assist
= Cross TraPc Alert
= Reversing camera
= 360° camera
= AIRMATIC
= E-ACTIVE BODY CONTROL
Coupling up a trailer
* NOTE Damag
e to the starter battery due
to full discharge Charging the trailer battery using the power
suppl

y of the trailer can damage the starter
battery. 
Do not use the vehicle's power supply to
c

harge the trailer battery. 
Remove the cover cap from the ball head and
s

tore it in a safe place. 
Position the trailer on a level surface behind
t

he vehicle and couple it up to the vehicle. 
Open the socket cap. 
Insert the plug with lug 1 int
o groove 3 on
the socket. 
Turn bayonet coupling 2 t
o the right as far as
it will go. 
Let the cap engage. 
Secure the cable to the trailer with cable ties
(onl
y if you are using an adapter cable). 
Make sure that the cable is always slack for
ease of mo
vement during cornering.
In the following circumstances, a message may
appear on t
he instrument display even if the
trailer has been connected correctly:
= LEDs have been installed in the trailer lighting
system.
= The current has fallen below the trailer lighting
system's minimum current (50 mA).
% Accessories can be connected to the perma-
nent po

wer supply up to 180 W and to the
power supply that is switched on via the igni-
tion lock.
Uncoupling a trailer &
WARNING Risk of being cr
ushed and
becoming trapped when uncoupling a
trailer
When uncoupling a trailer with an engaged
iner
tia-activated brake, your hand may
become trapped between the vehicle and the
trailer drawbar. 304
Driving and parking


Do not uncouple trailers with an engaged
o verrun brake. *
NOTE Damag
e during uncoupling with an
engaged overrun brake The vehicle may be damaged if you uncouple
wit
h an engaged overrun brake. 
Do not uncouple trailers with an engaged
o
verrun brake. &
WARNING Risk of becoming tr
apped when
disconnecting the trailer cable
Vehicles with level control system: The v
ehicle
may lower when the trailer cable is disconnec-
ted.
This could result in you or other people
becoming trapped if your or their limbs are
between the vehicle body and the tyres or
underneath the vehicle. 
Make sure that nobody is underneath the
v

ehicle or in the immediate vicinity of the wheel arches when you disconnect the
tr
ailer cable. *
NOTE Damag
e to the rear bumper from
installing adapter cables or adapter plugs The following parts could be damaged when
swiv
eling the ball neck fully electrically:
= Bumper
= Adapter cable
= Adapter plug 
Always remove the adapter cable or
adap

ter plug before swiveling the ball
neck fully electrically. 
Secure the trailer against rolling away. 
Disconnect the electrical connection between
t

he vehicle and the trailer. 
Uncouple the trailer. 
Place the cover cap on the ball head.
% Trailers with LED lighting: aser uncoupling t
he
trailer, switch the vehicle on and then oM
again. Bicycle rack function
&
WARNING Risk of an accident if t
he bicy-
cle rack is used incorrectly
The bicycle rack may become detached from
t
he vehicle in the following cases:
= the permissible load capacity of the trailer
hitch is exceeded.
= the bicycle rack is used incorrectly.
= the bicycle rack is secured to the ball neck
beneath the ball head.
Observe the following for your own safety and
that of other road users:
= always adhere to the permissible load
capacity of the trailer hitch.
= always observe the permissible rear axle
load of the towing vehicle.
= use the bicycle rack only to transport bicy-
cles. Driving and parking
305

=
alw ays mount the bicycle rack properly by
attaching to the ball head and the ball
neck guide pin, if possible.
= when transporting four bicycles, always
use bicycle racks that have additional sup-
port on the ball neck guide pin.
= use only bicycle racks approved by
Mercedes-Benz.
= always observe the bicycle rack operating
instructions. *
NOTE Damag
e to or breakage of the trailer
hitch due to unsuitable or improperly used
bicycle rack. 
Only use bicycle racks approved by
Mer
cedes-Benz properly as described
below. *
NOTE Incr
eased risk of damage to prop-
erty due to folded-out ball neck 
When the trailer is not coupled or the
bicy
cle rack is attached, fold in the ball neck or, in the case of a fully electric
tr
ailer hitch, retract the ball neck. *
NOTE The oper
ating permit may be invali-
dated due to the illegal installation of
trailer hitches The installation !

=
When mount ed on ball head 1 and guide pin
2, the maximum load capacity is 100 kg. You
can transport up to four bicycles.
The maximum load capacity is calculated from the
weight of the bicycle rack and the bicycle rack
load.
Observe the notes on driving with a roof load,
trailer or fully laden vehicle (  page 197).
When using a bicycle rack, set the tyre pressure
for increased load on the rear axle of the vehicle.
Further information on the tyre pressure can be
found in the tyre pressure table (  page 404).
Notes on loading
The larger the distance between the load's centre
of gravity and the ball head, the greater the load
on the trailer hitch.
Observe the following notes: = mount heavy bicycles as close to the vehicle
as possible
= always distribute the load on the bicycle rack
as evenly as possible across the vehicle's lon-
gitudinal axis Mercedes-Benz recommends removing all detach-
able par ts from bicycles (e.g. baskets, child seats,
rechargeable batteries) before loading them onto
the bicycle rack. This will improve the aerody-
namic resistance and centre of gravity of the bicy-
cle rack.
Always secure the bicycles to prevent them from
moving around and check them at regular inter-
vals to ensure that they are secure.
Do not use tarpaulins or other covers. The driving
characteristics and rear view may be impaired. In
addition, aerodynamic resistance and the load on
the trailer hitch will increase. Load distribution on the bicycle rack
1 Vertical distance between centre of gravity
and ball head
2 Horizontal distance between centre of gravity
and ball head
3 The centre of gravity is on the vehicle's centre
axis
Observe the following information when loading
t
he bicycle rack: Driving and parking
307