2020 MERCEDES-BENZ E-CLASS SALOON ECU

Ensu
rethefo llowing before starting a journey:
R The tyre pressure on there ar axle of theto w‐
ing vehicle is set for a maximum load
R The lighting of the connected trailer is opera‐
tional
R Vehicles without LED headlamps or MUL‐
TIBEAM LED headlamps: the headlamps
ha ve been set cor rectly
In theeve nt of increased rear axle load, the car/
trailer combination must not exceed a maximum
speed of 100 km/h forre asons concerning the
operating permit. This also applies in countri es
in which the permissible maximum speed for
car/trailer combinations is ab ove100 km/h. Extending or
retracting the ball ne ckfully
electrically &
WARNING Risk of accident due tothe
ball neck not being engaged
If th e ball neck is not engaged, the trailer
may come loose. #
Make sure that the ball neck securely
engages and loc ksinto place. *
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. Extending
the ball neck fully electrically #
Toextend: pull button 2.
Indicator lamp 1willflash and the mes‐
sage Trailer coupling extending… will appear
on the multifunction displa y.
The ball neck will extend fully electrically. 240
Driving and pa rking

#
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
messa geCheck trailer hitch lock will appear
on the multifunction displa y. Re
tracting the ball ne ckfully electrical ly #
Pull button 2.
Indicator lamp 1willflash and the mes‐
sage Trailer coupling extending… will appear
on the multifunction 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
messa geCheck trailer hitch lock will appear
on the multifunction displa y.
Obser vethe information about the displa yson
th e instrument clus ter:
R Indicator and warning lamps (/ page 424)
R Display messages (/ page 369) Fo
lding the ball neck in/out fully 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. Driving and pa
rking 241

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 rectly
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 Active Lane Keeping Assist
R ESP ®
trailer stabilisation
R Parking Assist PARKTRONIC
R Active Parking Assist
R Blind Spot Assist or Active Blind Spot Assi st242
Driving and pa rking

R
Drive AwayAssi st
R Cross Traf fic Alert
R Reversing camera
R 360° camera
R AIR BODY CONTROL
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 (/ page111). #
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 243

*
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. 244
Driving and pa rking

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
Obse rveth efo llowing information when loading
th e bicycle rack: Loading
the bicycle rack 3 bicycles 4 bicycles
To talwe ight of
bicycle rack
and load Up
to75 kg Up to
10 0kg
Max. dis tance
1 420 mm 420 mm
Max. di stance
2 300 mm 400 mm When transpo
rting four bic ycles or with a total
we ight between 75kgand 100kg , alw ays use
bicycle rack s with additional support on the
trailer hitch guide pin. Ve
hicle towing instructions
The vehicle is not suitable forth e use of tow bar
sy stems that are used forflat towing or ding hy
to wing, forex ample. Attach ing and using tow bar
sy stems can lead todamage on theve hicle.
When you are towing a vehicle with tow bar sys‐
te ms, safe driving characteristics cannot be 246
Driving and pa rking

Instrument display
overview 1
Speedome ter
The segments on the speedome ter indica te
th est atuses of thefo llowing sy stems: cruise
control / limiter / Active Dis tance Assi st
DISTRONIC
2 Index points
3 Outside temp erature 4
Time
5 Area for additional values (e xamp le:rev
counter): rev counter / navigation / ECO
display / consum ption / G-me ter / date
The fuel supply will be inter rupted toprotect
th e engine when there d mark on therev
counter (o verrev ving range) is reached.
6 Coolant temp erature display During normal operation,
the coolant tem‐
perature display is permitted torise to
12 0°C.
Ve hicles with 48 V on-board electrical sys‐
te m: POWER and CHARGE displ ay(elect rical
drive suppo rtand recuperation po wer of the
electric mo tor)
7 Selected drive program Instrument display and on-board computer
249

Information on 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.
A sy stem update consists of thre esteps:
R Downloading or copying of the data required
fo r ins tallation
R Installation of the downloaded sy stem update
R Activation of the downloaded sy stem update
by restarting the sy stem
% If automatic software updates are activated,
th e sy stem updates will be downloaded auto‐
maticall y.
The multimedia sy stem pr ovides a message
when a sy stem update is available.
Yo u ha vethefo llowing selection options:
R Accept and install
The sy stem update will be downloaded in the
bac kground.
R Information In
fo rm ation about the pending sy stem
update is displa yed.
R Later
The sy stem update can be downloaded man‐
ually at a later time.
Deep sy stem upda tes
Deep sy stem updates access vehicle or sy stem
settings and can therefore only be car ried out
when theve hicle is stationary and the ignition is
switched off.
If th e download of a deep sy stem update is com‐
ple ted and the downloaded sy stem update is
re ady for ins tallation, you will be informed of this
af te rth e next ignition cycle, forex ample.
% Park theve hicle safely in a suitable location
before starting the ins tallation.
Re quirements forth e ins tallation:
R The ignition is switched off.
R Notes and warnings ha vebeen read and
accep ted.
R The elect ric pa rking brake is applied. If all
requirements ha vebeen fulfilled, the down‐
loaded sy stem update is ins talled. The multime‐
dia sy stem cann otbe operated while the down‐
loaded sy stem update is being ins talled and
ve hicle functions are restricted.
If er rors should occur during the ins tallation, the
multimedia sy stem automatically attem ptsto
re store the pr evious version. If restoration of the
pr ev ious version is not possible, a symbol
appears on the media displa y.Consult a quali‐
fi ed specialist workshop toresolve the problem. Setting up a
Wi-Fi hotspot Requ
irements:
R Toset up theWi -Fi connection of the mul‐
timedia sy stem with extern al hotspots:
th ere is no communication module ins talled.
R The device tobe connec ted supports at least
one of the types of connection described. 266
MBUX multimedia sy stem