Coupling/uncoupling a trailer
Coupling a trailer
* NO
TEDama getotheve hicle battery due
to full discharge Charging
the trailer battery using the po wer
supply of the trailer can damage theve hicle
batter y. #
Do not use theve hicle's po wer supply
to charge the trailer batter y. #
Shift the selector le verto position 005D. #
Apply theve hicle's parking brake. #
Close all the doors. #
Position the trailer on a le vel sur face behind
th eve hicle.
% The ball head height
changes depending on
th eve hicle's load. In this case, use a trailer
with a height-adjus table trailer dr awbar. #
Couple up the trailer. #
Establish all electrical and other connections
to the trailer. #
Remo veobjects or devices which pr eventthe
trailer from rolling, e.g. wheel choc ks. #
Release the trailer's parking brake.
% The
vehicle harness has a cable connection
to the brake light indicator lamp.
Obser vethe maximum permissible trailer dimen‐
sions (width and length).
Most US states and all Canadian pr ovinces pre‐
scribe thefo llowing points, and you are ur gently
re commended tocomply wi th these:
R Safetych ains between theto wing vehicle and
th e trailer. The chains should be routed in a
criss-cross pat tern under the trailer dr awbar.
They must be connected tothe trailer tow
hitch and not tothe bumper or totheve hicle
axle.
Lea vesuf ficient sla ckinthech ains. This
allo wsforeve n sha rpcornering.
R A separate brake sy stem is requ ired for cer‐
ta in trailers.
R A saf etyfe ature is requ ired for braked trailers.
De term ine the specific requ irements acco rd‐
ing tothere leva nt la ws.
If th e trailer becomes de tach ed from theto w‐
ing vehicle, the saf etyfe ature triggers the
trailer brakes and can thus reduce the danger. 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. Do not uncouple a trailer with an
overrun brake in
a st ate of overrun. Otherwise, there bound of the
ove rrun brake can damage your vehicle. #
Shift the selector le verto position 005D. #
Apply theve hicle's parking brake. #
Close all the doors. #
Apply the trailer's parking brake. #
Secure the trailer against rolling away with a
wheel chock or similar object. #
Remo vethe trailer cables and saf etych ains. #
Uncou plethe trailer. Information about
towing a trailer Operating a trailer is subject
tomany statutory
re gulations such as speed restrictions.
Many states also requ ire an auxiliary separate
functional braking sy stem when towing a weight
th at exc eeds a cer tain limit. Foryo ur saf ety, it is
re commended touse a separate functional brak‐
ing sy stem on any towe dve hicle.
Make sure that your trailer combination meets
local regulations. This not only applies to your
place of residence, but also to your destination.
In fo rm ation on this can be obtained from the
police and local authorities.
Comply with thefo llowing when driving with a
trailer:
R Practice cornering, stopping and backing up
in a traf fic-free location. In this wa y,yo u will 17 2
Driving and pa rking
Note
s on operating saf ety &
WARNING Risk of distraction 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 tra ffic
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. &
WARNING Risk of an accident from oper‐
ating mobile communication equipment
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. Fo
ryo ur ow n sa fety, al ways obser vethefo llowing
points when operating mobile communications
equipment and especially your voice control sys‐
te m:
R Obser vethe legal requ irements forth e coun‐
try in which you are driving.
R While driving, on lyoperate mobile communi‐
cations equipment and your voice control sys‐
te m when the tra ffic conditions permit it. Yo u
may otherwise be distracted from the traf fic
conditions and cause an accident, inju ring
yo urself and others.
R Ifyo u use thevo ice control sy stem in an
emer gency your voice can change and your
te lephone call, e.g. an emer gency call, can
th ereby be unnecessarily dela yed.
R Familiarize yourself with thevo ice control sys‐
te m functions before starting the journe y. Operation
Multifunction
steering wheel operation over‐
vi ew The
Voice Cont rol Sy stem is operational appr ox‐
imately thirty seconds af terth e ignition is
switched on. 1
Press therock er switch up: £starts the
dialog
2 Press the cont rol knob: 0063switches the
sound off or on (ends the dialog)
Tu rn the cont rol knob up/down: inc reases/
dec reases thevo lume
3 Press therock er switch down: 0076rejects/
ends a call (ends the dialog) Conducting a dialog with
theVo ice Control
Sy stem Fo
rth e dialog with theVo ice Cont rol Sy stem, you
can use comple tesentences of colloquial lan‐
guage as voice commands, such as, forex ample,
"Please show me the list of the last calls" or "How
wa rm is it outside?". It is also not necessary to
fi rs tch ange tothere leva nt application su chas
"Telephone" or "Vehicle function". #
Toactivate or continue dialog byusing a
ke yword: say "Hello Mercedes" toactivate
th eVo ice Cont rol Sy stem. Voice activation
must be switched on in the multimedia sys‐
te m (/ page185). Forth is, it is not neces‐
sary topress up the£ rocker switch on
th e multifunction steering wheel.
Vo ice activation can also be direct lycom‐
bined wi thavo ice command, e.g. "Hello
Mercedes, how fastcan I drive?".
or 184
Voice Cont rol Sy stem
#
Press the£ rocker switch up on the multi‐
function steering wheel.
Yo u can say a voice command af ter an acous‐
tic signal. #
Tocor rect an entr y:say the"Correction"
vo ice command. #
Toselect an entry from the selection lis t:
say the line number or the contents. #
Tobrows eth e selection lis t:say the"Next"
or "Back" voice command. #
Tointer rupt the dialog: saythe"Pause"
vo ice command.
The dialog can be continued with the "Hello
Mercedes" voice command or bypressing up
th e£ rock er switch on the multifunction
st eering wheel. #
Tojump tothe preceding dialog: saythe
"Back" voice command. #
Tojump back totheto p dialog le vel:say
th e"Home" voice command. #
Tocancel the dialog: saythe"Close" voice
command or press the0063 or0076 button
on the multifunction steering wheel. #
Tointer rupt avo ice output: speak inthe
middle of a voice dialog when the sy stem is
st ill answering.
The voice output is shor tened and the conclu‐
sion is reached more quickl y.
The cor responding option must be switched
on in the multimedia sy stem. Operable functions
Yo
u can use theVo ice Cont rol Sy stem tooperate
th efo llowing functions depending on the equip‐
ment:
R Telephone
R Text messa ges
R Navigation
R Address book
R Radio
R Media
R Vehicle functions
R Weather
Fu ll functionality is only available with online
vo ice control active (/ page185). Overvi
ewof types of voice commands A distinction is made between
thefo llowing voice
commands:
R Global voice commands can be said at any
time and rega rdless of the cur rent applica‐
tion, e.g. thevo ice commands "Navigate to",
"Call" or"Text message to" .
R Application-specific voice commands are
only available forth e active application.
On the display next tothe active application,
ex amples of global voice commands and the cor‐
re sponding application-specific voice commands
are displa yed on a teleprom pter.The lists can be
scrolled or operated byvoice. Nu
mber entry functions R
The numbe rsallo wed are zerotonine .
R Telephone numbe rscan be entered as single
digits. Note
s onthe language setting Yo
u can change the language of theVo ice Cont rol
Sy stem via the sy stem language settings. If the
set sy stem language is not suppor tedby the
Vo ice Cont rol Sy stem, Engl ish will be selec ted.
The Voice Cont rol Sy stem is available in En glish,
Fr ench, Portuguese and Spanish. Setting
theVo ice Control Sy stem (multimedia
sy stem) Re
quirements
Fo r online voice control:
R Your vehicle is connected with your Mercedes
PRO user account (/ page195).
R There is an Internet connection
(/ page 254). Vo
ice Cont rol Sy stem 18 5
ing wheel or
the0063/00D0 button onthe
multimedia sy stem (/ page 201).
The Voice Guidance has been deactivated.
message appears.
or #
Show the navigation menu (/ page216). #
Selec t!.
The symbol changes to# . #
Toactivate: select#.
The cur rent navigation announcement is
pl ay ed.
The symbol changes to! .
% This function can be added and called up
from thefa vo rite s within the navigation cate‐
gor y.
Switching navigation announcements on or
off during a phone call #
Press the© button on thesteering wheel.
or #
Press and hold the0038/© button onthe
multimedia sy stem.
or #
Tap on © inthe media displa y. #
Select Settings . #
Select System. #
Select Audio. #
Select Navigation and Traffic Announce-
ments . #
Activate or deacti vate Voice Guidance During
Call.
When the option is switched on, the display
button is activated. #
Tolea vethe menu: select0047.
Ad justing the volume of navigation announce‐
ments
Multimedia sy stem:
4 © 5
Settings 5
System 5
Audio
5 Navigation and Traffic Announcements #
Select Voice Guidance Volume .#
Set thevo lume. #
Tolea vethe menu: select0047.
Ro ute guidance is active #
Turn thevo lume control on the multifunction
st eering wheel during a navigation announce‐
ment.
or #
Press thevo lume rocker switch on the multi‐
media sy stem up or down.
Switching audio fadeout on or off during navi‐
ga tion announcements #
Press the© button on thesteering wheel.
or #
Press and hold the0038/© button onthe
multimedia sy stem.
or #
Tap on © inthe media displa y. #
Select Settings . #
Select System. #
Select Audio. #
Activate or deacti vate Audio Fadeout. #
Tolea vethe menu: select0047.
Re peating navigation announcements
Re quirements:
R Aro ute has been created.
R Route guidance is active.
Multimedia sy stem:
4 Navigation #
Select !. #
Select #.
The cur rent navigation announcement is
re peated.
% This function can be added and called up
from thefa vo rite s within the navigation cate‐
gor y.
Canceling route guidance
Re quirements:
R Aro ute has been created.
R route guidance is active. #
Show the navigation menu. #
Select ¤inthe navigation menu
(/ page 217).
Overview of route guidance toan off-road
destination
An off-road destination is within the digital map.
The map contains no roads that lead tothe desti‐
nation.
Yo u can enter geo-coordinates or a thre ewo rd
address for off-road destinations on the map.
Ro ute guidance guides youfo r as long as possible
with navigation announcements and displa yson
ro ads that are kn ownto the multimedia sy stem. MBUX multimedia sy
stem 231
R
Fasten the load tothe tie-down eyes and dis‐
tribute the load evenly among them.
R Use tie-down eyes and fastening components
which are suitable forth ewe ight and size of
th e load. Load distribution
* NO
TERisk of damage tothefloor co ver‐
ing Excessive point loading on
the cargo com‐
partment floor or on the load area can nega‐
tively af fect the driving characteristics and
could damage thefloor co vering. #
Vehicles with rear-wheel drive: dis‐
tribu tethe load uniformly. When doing
so, ensure that theove rall cen ter of
gr av ity of the load is alw ays as low and
close tothe center as possible and
between the axles near there ar axle. #
Vehicles with all-wheel drive: distrib‐
ute the load uniforml y.When doing so,
ensure that theove rall cen ter of gr avity
of the load is alw ays as low and close to
th e center as possible and between the
axles. Fo
r Cargo Vans, buses and Passenger Vans:
R Always transport loads in the cargo compart‐
ment.
R Always place the load against the seat backr‐
ests of there ar ben chseat.
R Movelarge and heavy loads as farto wa rds
th e front of theve hicle as possible in the
direction of tra vel against there ar ben ch
seat. Stow loads flush with there ar ben ch
seat.
R Always additionally securethe load with suita‐
ble load securing aids or tie downs.
R The load must not pr otru de abo vethe upper
edge of the seat backrests.
R Transport loads behind seats that are not
occupied.
R Ifth ere ar ben chseat is not occupied, insert
th e seat belts crosswise into the seat belt
buckle of the opposite seat belt. Securing loads
Note
s on load securing &
WARNING Risk of accident and injury
due toincor rect use of the lashing stra ps
If yo u attach the lashing stra p incor rectly
when secu ring loads, thefo llowing may occur
in theev ent of abrupt changes in direction,
braking maneuver or an acciden t:
R The tie-down eyes may become de tach ed
or the lashing stra p may tear if the per‐
missible load is exceeded.
R The load cann otbe restra ined.
This may cause the load toslip, tip over or be
fl ung about, striking vehicle occupants. #
Alwayste nsion the lashing stra ps in the
proper manner and only between the
described tie-down eyes. #
Always use lashing stra ps designed spe‐
cifically forth e loads. %
Obser
vethe information relating tothe maxi‐
mum loading capacity of the individual cargo
tie-down point. If you combine various cargo
tie-down points tosecure a load, alw aysta ke
th e maximum loading capacity of thewe ak‐
est cargo tie-down point into account. During
maximum full- stop braking, forc es may act
which can multiply thewe ight of the load.
Alw ays use se veral cargo tie-down points to
distribute and spread the load. Spread the
load evenly between the cargo tie-down
points or tie-down eyes.
Alw ays obser vethe operating instructions or the
lashing stra p manufacturer's instructions forthe
operation of the lashing stra p.
Obser vethe information relating tothe maximum
loading capacity of the cargo tie-down points
(/ page 353).
As the driver, you are responsible for ensuring the
fo llowing:
R The load is secured against slipping, tipping,
rolling or falling off.
Ta ke usual traf fic conditions as well as swerv‐
ing or full brake application and bad roads
into account.
R The applicable requ irements and guidelines
re lating toload-securing practices are met.
If th is is not the case, this may con stitute a
punishable of fense, depending on local legis‐ 272
Transporting
ASS
YST PLUS se rvice inter val display Fu
nction of the ASS YST PLUS se rvice inter val
displ ay The ASS
YST PLUS service inter val display on the
instrument display pr ovides information on the
re maining time or dis tance be fore the next
service due date.
Yo u can hide this service message byusing the
back button on the left-hand side of thesteering
wheel.
Yo u can obtain fur ther information concerning
th e servicing of your vehicle from a qualified spe‐
cialist workshop, e.g. an authorized Mercedes-
Benz Center. Displaying
the service due da te On-board computer:
4 Service 5
ASSYST PLUS
The next service due date is displa yed. #
Toexitth e displa y:press the back button on
th e left-hand side of thesteering wheel.
Bear in mind thefo llowing related topic:
R Operating the on-board com‐
puter(/ page176) Ca
rrying out maintenance workregular ly *
NO
TEPremature wearthro ugh failure to
obser veservice due dates Service
workwhich is not car ried out at the
ri ght time or incomple tely can lead to
inc reased wear and damage totheve hicle. #
Always obser vethe prescribed service
inter vals. #
Always ha vethe prescribed service
wo rkcar ried out at a qualified specialist
wo rkshop. Special service
requ irements The prescribed service inter
val is based on nor‐
mal vehicle use. Maintenance workwill need to
be per form ed more of tenth an presc ribed if the
ve hicle is operated under arduous conditions or
increased loads. Examples of arduous operating conditions:
R Regular city driving with frequent intermedi‐
ate stops
R Mainly short-dis tance driving
R Frequent operation in mountainous terrain or
on poor road sur faces
R When the engine is of ten le ftidling for long
periods
R Operation in particula rly dusty conditions
and/or if air-reci rculation mode is frequently
used
In these or similar operating conditions, ha vethe
interior air filter, engine air cleaner, engine oil and
oil filter etc. changed more frequently. If theve hi‐
cle is subjected tohigher loads, the tires must be
ch ecked more frequentl y.Yo u can obtain fur ther
information at a qualified specialist workshop. Battery disconnection periods
The ASS
YST PLUS se rvice inter val display can
only calculate the service due date when the
battery is connected. #
Notedown the service due date displa yed on
th e Instrument Display before disconnecting
th e battery (/ page278). Engine compa
rtment Opening and closing the hood
&
WARNING Risk of accident if the engine
hood is unlatched while driving
An unloc ked engine hood may open up when
th eve hicle is in motion and block your vie w. #
Never unlatch the engine hood while
driving. #
Before every trip, ensure that the engine
hood is latched. &
WARNING Danger of bu rns when open‐
ing the hood
If yo u open the hood when the engine has
ove rheated or during a fire inthe engine com‐
partment, you could come into con tact wi th
hot gases or other escaping operating fluids. #
Before opening the hood, allow the
engine tocool down. 278
Maintenance and care
R
Use snow chains only when thero ad sur face
is comple tely sno w-covered. Re mo vethe
snow chains as soon as possible when you
come toaro ad that is not sn ow-co vered.
R Local regulations may restrict the use of
snow chains. Obse rveth e applicable regula‐
tions before ins talling snow chains.
R Activate all-wheel drive be fore driving off with
snow chains (/ page125, 124, 125).
R If sn ow ch ains are installed, the maximum
permissible speed is 30 mph (50 km/h).
R Vehicles with Parking Assis t:do not use
Pa rking Assist PARKTRONIC if sn ow chains
are ins talled.
% You can deactivate ESP ®
to pull away
( / page 148). This all ows the wheels to
spin, achieving an increased driving forc e. Ti
re pressure Note
s on tire pressure &
WARNING Risk of accident due toinsuf‐
fi cient or excessive tire pressure
Underinfla ted or overinfla ted tires pose the
fo llowing risks:
R The tires may bur st, especially as the load
and vehicle speed increase.
R The tires may wearexcessively and/or
une venly, which may greatly impair tire
traction.
R The driving characteristics, as well as
st eering and braking, may be greatly
impaired. #
Comply with there commended tire
pressure and check the tire pressure of
all tires including the spare wheel regu‐
larly:
R at least once a month
R when the load changes
R before embarking on a lon ger journey
R if operating conditions change, e.g. off-
ro ad driving #
Adjust the tire pressure as necessar y. Driving wi
thtire pressure that is too high or too
low has thefo llowing consequences:
R Shor tenth e service life of the tires.
R Cause increased tire damage.
R Adversely af fect handling characteristics and
th us driving saf ety, e.g. due tohydroplaning. &
WARNING Risk of an accident due to
insuf ficient tire pressure
Ti re s with pressure that is too low can over‐
heat and bur stas a result.
In addition, they also suf fer from excessive
and/or ir regular wear, which can significantly
impair the braking properties and the han‐
dling characteristics. #
Avoid excessively low tire pressures in
all the tires, including the spare wheel. Ti
re pressure which is too low can cause:
R Tire faults as a result of overheating
R Impaired handling characteristics
R Irre gular wear
R Increased fuel consum ption &
WARNING Risk of accident from exces‐
sive tire pressu re
Ti re s with excessively high pressure can bur st
because they are damaged more easily by
highw ayfill, pot holes etc.
In addition, they also suf fer from ir regular
we ar, which can significantly impair the brak‐
ing properties and the handling characteris‐
tics. #
Avoid excessively high tire pressures in
all the tires, including the spare wheel. Excessively high tire pressure can
result in:
R Increased braking dis tance
R Impaired handling characteristics
R Irre gular wear
R Impaired driving com fort
R Susceptibility todamage &
WARNING Risk of accident caused by
re peated drop in tire pressure
If th e tire pressure drops repeatedly, the
wheel, valve or tire may be damaged. 310
Wheels and tires
has not
reached the le velto trig ger illumina‐
tion of the TPMS low tire pressure telltale.
Yo ur vehicle has also been equipped with a
TPMS malfunction indicator toindicate that
th e sy stem is not operating properly. The
TPMS malfunction indicator is combined with
th e low tire pressure telltale. When the sys‐
te m de tects a malfunction, the indicator lamp
will flash for appro ximately one minute and
th en remain continuously illumina ted. This
sequence will continue upon subsequent
ve hicle start-ups as long as the malfunction
ex ists.
When the malfunction indicator is illuminated,
th e sy stem may not be able todetect or sig‐
nal low tire pressure as intended. TPMS mal‐
functions may occur for a variet y of reasons,
including the ins tallation of replacement or
alternate tires or wheels on theve hicle that
pr ev ent the TPMS from functioning properly.
Alw aysch eck the TPMS malfunction telltale
af te rre placing one or more tires or wheels on
yo ur vehicle toensure that there placement
or alternate tires and wheels allow the TPMS
to continue tofunction properly. The sy
stem checks the tire pressure and thete m‐
perature of the tires ins talled on theve hicle by
means of a tire pressure sensor.
New tire pressure sensors, e.g. in winter tires,
are automatically taught-in during thefirs t jour‐
ney they are used.
The tire pressure and the tire temp erature appear
in the multifunction display (/ page177).
If th ere is a subs tantial loss of tire pressure, a
wa rning is issued:
R Via display messages (/ page 369)
R Viath e0077 warning lamp in the instrument
clus ter
It is the driver's responsibility toset the tire pres‐
sure tothere commended cold tire pressure suit‐
able forth e operating situation. Set the tire pres‐
sure for cold tires using a tire pressu regauge.
No tethat the cor rect tire pressure forth e cur rent
ope rating situation mu stfirs t be taught-in tothe
tire pressure moni toring sy stem.
In most cases, the tire pressure monitoring sys‐
te m will automatically update the new refere nce
va lues af teryo u ha vechanged the tire pressure.
Yo u can, ho wever,also update there fere nce val‐ ues
byrestarting the tire pressure monitoring
sy stem manually (/ page316).
Sy stem limits
The sy stem may be impaired or may not function
in thefo llowing situations:
R Ifth e tire pressure is set incor rectly
R Ifth ere is a sudden pressure loss caused by a
fo re ign object penetrating the tire, forex am‐
ple
R Ifth ere is a malfunction caused byano ther
ra dio signal source
R Ifth ere is a change of tire size Wheels and tires
315