2020 MERCEDES-BENZ S-CLASS SALOON LONG ECU

Extending
the ball neck fully electrically #
Toextend: pull button 2.
Indicator lamp 1willflash and the display
message Trailer coupling in motion will
appear on the driver's displa y.
The ball neck will extend fully electrically. #
Wait until the ball neck has loc ked in place.
When indicator lamp 1is continuously lit,
th e ball neck is securely loc ked in place.
If th e ball neck is not securely loc ked in
place, indicator lamp 1willflash and the
display message Check trailer hitch lock will
appear on the driver's displa y. Re
tracting the ball ne ckfully electrical ly #
Pull button 2.
Indicator lamp 1willflash and the display
message Trailer coupling in motion will
appear on the driver's displa y.
The ball neck will retract fully electrically. #
Wait until the ball neck has loc ked in place.
When indicator lamp 1goes out, the ball
neck is securely loc ked in place.
If th e ball neck is not securely loc ked in
place, indicator lamp 1willflash and the
display message Trailer coupling Check lock
will appear on the driver's displa y.
Obser vethe information about the notifications
on the driver's display:
R Warning and indicator lamps (/ page 550)
R Display messages (/ page 492)284
Driving and parking

Extending and
retracting the ball ne ckfully
electrically (multimedia sy stem) &
WARNING Risk of accident due tothe
ball neck not being engaged
If th e ball neck is not engaged, the trailer
may come loose. #
Alw ays engage the ball neck as descri‐
bed. *
NO
TEDama getothe all-electric trailer
hitch due toadditional pressure The all-electric trailer hit
chcould be mechan‐
ically damaged byapplying additional pres‐
sure when the ball neck is being extended or
re tracted. #
Do not ma kethe ball neck extend/
re tract faster by applying additional
pressure. Re
quirements:
R The vehicle is secured against rolling away.
R The swivel range is clear. R
The trailer cables or adap ter plugs ha vebeen
re mo ved.
Multimedia sy stem:
4 © 5
ß 5
y
Extending the ball neck fully electrically #
Select Ü.
The Trailer coupling in motion display mes‐
sage will appear on the driver's 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 display message will
appear on the driver's displa y.
Re tracting the ball ne ckfully electrical ly #
Select Ü.
The Trailer coupling in motion displaymes‐
sage will appear on the driver's 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 eTrailer coupling Check lock display message
will appear on the driver's displa y.
Obser vethe information about the displa yson
th e instrument clus ter:
R Indicator and warning lamps (/ page 550)
R Display messages (/ page 492) Coupling up/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 tentionally,
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: Driving and parking
285

#
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 Active Lane Keeping Assist
R Parking Assist PARKTRONIC
R Active Parking Assist
R Blind Spot Assist or Active Blind Spot Assi st
R Drive AwayAssi st
R Cross traf fic wa rning
R Manoeuvring brake function
R Reversing camera
R 360° camera
R AIRMATIC
Coupling up a trailer
* NO
TEDama getothest ar ter battery due
to full discharge 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. 286
Driving and parking

#
Secu rethe 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 driver's 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. *
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. Driving and parking
287

Bic
ycle rack function &
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. *
NO
TEIncreased risk of damage toprop‐
erty due tofolded-out ball neck #
When the trailer is not coupled or the
bicycle rack is attached, fold in the ball
neck or, in the case of a fully electric
trailer hitch, retract the ball nec k. Tr
ailer hit ch(examp le with additional guide pin)
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 toball head 1,
th e maximum load capacity is 75kg.Yo u can
transport up tothre e bicycles. 288
Driving and parking

R
When mounted on ball head 1and guide
pin 2, the maximum load capacity is
10 0kg .Yo u can transpo rtup tofour bicy‐
cles.
The load capacity is calculated from thewe ight
of the bicycle rack and the bicycle rack load.
Obser vethe no tes on driving with a roof load,
trailer or fully laden vehicle (/ page192).
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 385).
Note s on loading
The larger the 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 evenly 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
Obse rveth efo llowing information when loading
th e bicycle rack: Driving and pa
rking 289

#
Make sure that when the position of
driver's seat is being adjus ted using the
multimedia sy stem, no people or body
parts are in the seat's range of mo ve‐
ment.
If th ere is a risk of someone becoming trap‐
ped, stop the adjustment process immedi‐
ately: #
a)Tapth ewa rning message on the cen‐
tral displa y.
or #
b) Press a memory position button or a
seat adjustment switch on the driver's
door.
The adjustment process will be stop‐
ped. The driver's seat is equipped with an access pre‐
ve nter.
If th e driver's door is open, the driver's seat will
not be set af ter calling up the driver's profile. User profiles and user-specific content
Prerequisites
forth eve hicle owner:
R You ha vea Mercedes me user account.
R You ha vea Mercedes me PIN.
R You ha veagreed tothete rm s of use.
User profiles sa vepersonal settings. If theve hi‐
cle is used byseveral people, a person can
ch ange their profile settings without changing
th e settings of other users.
Yo u can individualise a user profile in theve hicle
using the set-up assis tant or using the settings
in your user profile. Some settings, e.g. the
Mercedes me PIN and a profile pho toare made
in the Mercedes me app or in the Mercedes me
Po rtal.
User-specific con tent and applications wi thper‐
sonal data are pr otected bydiffere nt le vels of
security. Toaccess pr otected conte nt,the
Mercedes me PIN and, depending on theve hicle
equipment, biometric sensors can be used.
% The security le vel is set bythe multimedia
sy stem and calculated from the combination of all sensor inputs. Some security le
vels
cannot be turned off.
% When a user profile is activated, thefo llow‐
ing personalised com fort systems, forex am‐
ple, can be adjus ted or their settings loaded:
R Seat
R Ambient light
R Outside mir rors
R Blinds
R Air conditioning adjustment
If th e user profile is activated when driving
th en the driver's seat position will not be
adjus ted.
Depending on theve hicle equipment you can, as
a user, sa vethefo llowing settings, forex ample:
R Driver's seat, steering wheel and mir ror set‐
tings
R Climate control
R Ambient lighting
R Radio (including station list)
R Suggestions and favo urites 308
MBUX multimedia sy stem

Overview of software updates
Impor
tant software upda tes may be necessary
fo rth 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.
The multimedia sy stem displa ysa cor responding
message when a software update isavailable.
If th eAutomatic online update option is active,
software updates are downloaded automaticall y.
If th e option is deactivated, you will be informed
of new software updates once. The software
updates are available for downloading for a limi‐
te d period of time.
Car rying out a software update:
R You can start online software updates via the
communication module.
R You can start software updates via a Wi-Fi
hotspot.
R You can start map updates from an extern al
medium.
% Tocompl ete software updates via the com‐
munication module, theve hicle must be con‐ nected with
the Internet and a Mercedes me
user account.
% Tocompl ete software updates via Wi-Fi, the
ve hicle must be connected toan extern al Wi-
Fi hotspot.
A software upda teconsi sts of thre esteps:
R Downloading or copying of the data requ ired
fo r ins tallation
R Installation of the downloaded software
update
R Activation of the downloaded software
update.
% It may be necessary torestart the MBUX
multimedia sy stem af ter completion of a
software update.
% While some software updates are being
downloaded, the multimedia sy stem cann ot
be operated and theve hicle functions may
be restricted.
% Some software upda tesre qu ire a safe vehi‐
cle status forth e ins tallation tobe comple‐
te d. They may only be car ried out in a safely
par kedve hicle with the ignition switched off. %
For software updates requiring a safe vehicle
st atus: when the last ins tallation step is
re ached, a message appears in the cent ral
display af terth e ignition is switched off. Fol‐
low thestep-b y-step instructions in the cen‐
tral display tocompl eteth e ins tallation.
Av ailability of the driver display and central
display
During the ins tallation of software updates, it is
not possible touse theve hicle, centra l display
and driver displa y.Yo u may recei vethefo llowing
display messages when an ins tallation is run‐
ning: 312
MBUX multimedia sy stem