Page 246 of 453

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. #
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. *
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. Driving and pa
rking 243
Page 251 of 453

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. 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. 248
Instrument display and on-board computer
Page 252 of 453
Instrument display
overview 1
Digital speedom eter in area for additional
va lues
2 Outside temp erature
3 Time
4 Output setting in area for additional values
5 Output scale
6 Indexpoints 7
Recuperated po wer scale
8 Drive program
9 Transmission position
A Current recuperated output
B Current output
C Display area on multifunction display D
Current state of charge ofthe high-voltage
battery
E Range
F Maximum available output of the drive sys‐
tem
Und er normal operating conditions, the dis‐
play will be in the maximum range. Ho wever,
th eav ailable output may deviate from the Instrument display
and on-board computer 249
Page 253 of 453

maximum
range in theeve nt of very high or
low outside temp eratures, very high output
re qu irements over an extended time span, a
ve ry low state of charge ofthe high-voltage
battery or a fault in the drive sy stem.
The segments on the speedome ter indica tethe
st atus of thefo llowing sy stems: cruise control /
limiter / Active Dis tance Assi stDISTRONIC Overvi
ewof but tons on thest eering wheel 1
P Back/Home button (press and hold),
on-board computer
2 Touch Control, on-board co mputer
3 Control panel for cruise control/limiter or
Ac tive Dis tance Assi stDISTRONIC
4 Control panel forth e MBUX multimedia sys‐
te m (/ page 254) Operating
the on-boa rdcompu ter
Obser vethe legal requ irements forth e count ry
in which you are cur rently driving when operat‐
ing the on-board computer. The on-board computer is operated using
the
left-hand Touch Control and the left-hand back/
home button.
When the on-board computer is being operated,
dif fere nt acoustic signals will sound as operating
fe edbac k,e.g. when the end of a list is reached
or when you are sc rolling thro ugh a list.
The following menus are available:
R Service 250
Instru ment display and on-board computer
Page 254 of 453

R
Assistance
R Trip
R Navigation
R Radio
R Media
R Telephone
R HUD
R Design
% You can find information about the possible
settings and selections on the menus in the
Digital Owner's Manual. #
Tocall up the menu bar: pressthe left-hand
back button until the menu bar is displa yed.
% Press theò button tocall up the menu
bar of the on-board computer. #
Toscroll on the menu bar: swipe left or
ri ght on the left-hand Touch Control. #
Tocall up a menu, submenu or possible
settings on the menu, or confirm a selec‐
tion or setting: pressthe left-hand Touch
Control. #
Toscroll through displa ysor lists on the
menu, or select display content, a func‐
tion, an entry or a displa y:swipe upwards
or down wards on the left-hand Touch Con‐
trol. #
Toexit a submenu: pressthe left-hand back
button. Overview of displa
yson the multifunction
display
Displa yson the multifunction display
ë Active Parking Assist (/ page 235)
é Parking Assist PARKTRONIC deacti vated
( / page 232)
h Cruise control (/ page196)
È Limi
ter (/ page197)
ç Active Dis tance Assi stDISTRONIC
(/ page 199)
ê Active Brake Assi st (/ page 213)
à Active Steering Assist (/ page 206)
à Ac
tive Lane Keeping Assist (/ page 220)õ
Operational readiness of the drive sy stem
(/ page 152)
° Haptic accelerator pedal (/ page157)
ò Sound generator inope rative
(/ page 366)
ë HOLD function (/
page193)
_ Ad
aptive Highbeam Assist Plus
(/ page 127)
ð Maximum pe rmissible speed exceeded
(for cer tain countries only)
Ve hicles with Speed Limit Assis t:de tected
instructions and traf fic signs (/ page 214).
Ve hicles with Traf fic Sign Assis t:de tected
instructions and traf fic signs (/ page 215). Head-u
p display Fu
nction of the head-up display The head-up display projects
thefo llowing into
th e driver's field of vision:
R Information from the navigation sy stem Instrument display and on-board computer
251
Page 255 of 453

R
Information from the driver assis tance sys‐
te ms
R Some warning messages
Display content 1
Navigation instructions
2 Curr ent speed
3 Detected instructions and traf fic signs
4 Set speed in the driver assis tance sy stem
(e.g. Active Dis tance Assi stDISTRONIC)
When youre cei vea call, the6 Incoming call
message will appear on the head-up displa y.In audio mode,
thest ation name or track will be
shown temp orarily when the audio source is
being actively operated.
Sy stem limits
The visibility is influenced bythefo llowing condi‐
tions:
R Seat position
R Image position setting
R Light conditions
R Wetro ad sur faces
R Objects on the display co ver
R Polarisation in sunglasses
% Inextreme sunlight, sections of the display
may appear washed out. You can co rrect this
by switching the head-up display off and on
again. Ad
justing the head-up display settings on
the on-board co mputer On-board computer:
4 HUD 1
Setting cur rently selected
2 Digital speedome ter
3 Traf fic Sign Assi st
4 Navigation displa ys
The following can be adjus tedfo rth e head-up
display:
R Position
R Brightness 252
Instrument display and on-board computer
Page 256 of 453
R
Display content #
Toselect a setting: swipe upwards or down‐
wa rds on the left-hand Touch Control. #
Press the left-hand Touch Control. #
Toadjust a value: swipe upwards or down‐
wa rds 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. Instrument display and on-board computer
253
Page 257 of 453

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 Control panel forte lephone, navigation,
ra dio/media, vehicle functions/sy stem set‐
tings and favo urites/ themes
4 Touchpad 5
Controller
Turn: adjusts thevo lume
Press: switches sound on or off
6 Ü Switches the MBUX multimedia sy stem
or media display on or off
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. 254
MBUX multimedia sy stem