ECU MERCEDES-BENZ E-CLASS SALOON 2020 Workshop Manual

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

Multimedia sy
stem:
4 © 5
Settings 5
System
5 Wi-Fi & Bluetooth
Ac tivating/deactivating Wi-Fi #
Select Wi-Fi.
Connecting the multimedia sy stem with an
ex tern al hotspot using Wi-Fi
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 can be found in the manufactur‐
er's operating 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¡.
Connecting using a WPS PIN #
Select the options rofthe desired Wi-Fi
networ k. #
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.
Configuring the multimedia sy stem as a Wi-
Fi hotspot forex tern al devices
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‐ MBUX multimedia sy
stem 267

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 the
DIRECT-MBUX XXXXX network name. #
Enter the security key which is shown in the
media display on the device tobe connec ted. #
Confirm the entry.
Connecting using NFC #
Select Connect via NFC. #
Activate NFC on the mobile device (see the
manufacturer's operating instructions). #
Hold the device tobe connec ted at theve hi‐
cle's NFC inter face. #
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. Na
vigation Note
s on navigation Ro
ute guidance with augmented reality &
WARNING Risk of accident and inju ryas
a re sult of distraction, incor rect depic‐
tion or wrong interpr etation of the dis‐
play
The camera image of the augmented reality
display is not suitable as a guide for driving. #
Alw ayske ep an eye on the actual traf fic
situation. 268
MBUX multimedia sy stem

Te
lephone Te
lephony Note
s ontelephony &
WARNING Risk of di stra ction from oper‐
ating integrated communication equip‐
ment while theve hicle is in motion
If yo u operate communication equipment
integrated in theve hicle when driving, you
will be distracted from the tra ffic situation.
This could also cause youto lose control of
th eve 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. Yo
u must obse rveth e legal requirements forthe
country in whi chyou are cur rently driving when
operating mobile communication equipment in
th eve hicle. &
WARNING Risk of inju rydue toobjects
being stowed inco rrectly
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 within.
There is 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. MBUX multimedia sy
stem 275

R
Two mobile phones are connected with the
multimedia sy stem via Blue tooth®
(two
phone mode).
- You can use all the functions of the multi‐
media sy stem with the mobile phone in
th efo re ground.
- You can recei veincoming calls and mes‐
sages with the mobile phone in the back‐
ground.
Yo u can inter change the mobile phone in
th efo re ground and bac kground.
R A mobile phone is connected as the car
phone.
Connecting a mobile phone
Re quirements:
R Blue tooth ®
is activated on the mobile phone
(see the manufacturer's operating instruc‐
tions).
R Blue tooth ®
is activated on the multimedia
sy stem. Multimedia sy
stem:
4 © 5
Phone
Sear ching for a mobile phone #
Select í. #
Select Connect new device .
Connecting a mobile phone
Auth orisation follo ws using secure simple pair‐
ing. #
Select a mobile phone.
A code is displ ayed in the multimedia sy stem
and on the mobile phone. #
If bo thcodes match, confirm the code on the
mobile phone.
Fu nctions in thete lephony menu
In thete lephony menu you ha vethefo llowing
functions, forex ample:
R Making calls, e.g.:
-
R Accept a call
- k End call
- i Create conferen. call -
Accepting or rejecting a waiting call
R Managing con tacts, e.g.:
- Downloading mobile phone contacts
- Managing thefo rm at of a con tact's name
- Saving a contact as a favo urite
R Receiving and sending messages, e.g.:
- Using there ad-aloud function
- Dictating a new message Mercedes me and apps
Mercedes me connect
Information on Mercedes me connect
% Mercedes me connect or individual
Mercedes me connect services are not avail‐
able in everycountr y.Find out at a
Mercedes-Benz service centre if these func‐
tions are available in your count ry.
Mercedes me connect consists of multiple serv‐
ices. 278
MBUX multimedia sy stem