warning MERCEDES-BENZ V-CLASS 2021 Owners Manual

There is a danger of collision!
#
Inthese situations, do not use Active
Pa rking Assist. Snowfall or heavy
rain may lead toa parking space
being measured inaccu rately.Pa rking spaces that
are partial lyoccupied bytrailer dr awbars might not
be identi/ed as such or be measured incor rectl y.
Only use Active Parking Assist on le vel, high-g rip
gr ound.
Do not use Active Parking Assist in thefo llowing
situations, among others:
R inextreme weather conditions such as ice,
pac ked snow or in heavy rain
R when cornering
R for parking spaces which are not on the same
le ve l as thero ad, e.g. not on the pa vement
R when transporting a load that pr otru des
be yond theve hicle
R when snow chains are /tted
Ac tive Parking Assist may also display parking
spaces that are not suitable for parking, forex am-
ple:
R parking spaces where parking is prohibited
R parking spaces on unsuitable sur faces
Ac tive Parking Assist will not assist you with par k-
ing spaces perpendicular tothe direction of tr avel
in thefo llowing situations:
R if two parking spaces are located immediately
next toeach other
R ifth e parking space is immediately next to a
low obstacle such as a kerb
R ifyo u are parking forw ards
Ac tive Parking Assist will not assist you with par k-
ing spaces parallel or perpendicular tothe direc-
tion of tr avel in thefo llowing situations:
R ifth e parking space is on a kerb
R ifth e system deems the parking space tobe
bloc ked, such as byfoliage or grass paving
bloc ks
R ifth e area is too small forth eve hicle to
manoeuv reinto
R ifth e parking space is bordered byan obs ta-
cle, e.g. a tree, a post or a trailer P
P ar
ar king using A
king using A ctiv
ctive P
e Par
arking Assist
king Assist &
W
WARNING
ARNING Risk of accident due toinsu1-
cient lysecuring theve hicle against rolling
awa y when exiting theve hicle
If yo u lea vethe driver's seat when theve hicle
is being braked byActive Parking Assist onl y,it
could rollaw ay inthefo llowing situations:
R ifth ere is a malfunction in the system or in
th e po wer suppl y.
R ifth e electrical system in the engine com-
partment, the battery or the fuses are tam-
pered with.
R ifth e battery is disconnected.
R ifth eve hicle is accelerated, e.g. byave hi-
cle occupant. #
Before leaving the driver's seat, alw ays
secure theve hicle against rolling away. #
Bring theve hicle safely toa stop when the
parking symbol with an ar row sho ws the
desired parking space. &
W
WARNING
ARNING Risk of accident due tovehicle
swinging out while parking or pulling out of
a parking space
While parking or pulling out of a parking space,
th eve hicle swings out and can drive onto
areas of the oncoming lane.
This could cause youto collide with objects or
ot her road users. #
Pay attention toobjects and other road
users. #
Where necessar y,stop theve hicle or
cancel the parking procedure with Park-
ing Pilot. #
V Vehicles wit
ehicles wit h manual tr
h manual tr ansmission:
ansmission: shiTto
re ve rsege ar. #
V
Vehicles wit
ehicles wit h aut
h automatic tr
omatic tr ansmission:
ansmission: shiTthe
transmission toposition k.
The instrument cluster display sho ws theStart
Parking Assist? Yes: OK No: ~message
and the location of the parking space. #
T
To cancel t
o cancel t he pr
he process:
ocess: pressthe~ steer-
ing-wheel button or drive o..
or Driving and parking
171
171

#
T
To par
o par k using activ
k using activ e par
e parking assist
king assist ance:
ance:press
th ea steering-wheel button.
The Parking Assist in operation Accelerate
and brake Observe surroundings message is
shown in the inst rument cluster displa y. #
Release the steering wheel. #
Reverseth eve hicle, being ready tobrake at all
times. Reverse slo wly, and do not drive faster
th an 10 km/h. Parking assistance is otherwise
cancelled and Active Parking Assist is stopped.
On vehicles with automatic transmission, when
th eve hicle approaches there ar border of the
parking space, Active Parking Assist can brake
it to a standstill. #
Stop at there ar border of the parking space.
St op when PARKTRONIC sounds the continu-
ous warning tone, if not before.
Manoeuvring may be requi red in tight parking
spaces. Obser vethe messages in the inst rument
cluster displa y.
On completion of the parking procedure, the
Active Parking Assist finished message appears
and an acoustic signal sounds. Active Parking
Assist no longer supports you with steering inter-
ve ntions and brake applications.
Exiting a par
Exiting a par king space wit
king space wit h A
h Activ
ctiv e P
e Par
arking Assist
king Assist
R
R eq
eq uir
uir ements:
ements:
R The vehicle has been par ked parallel tothe
direction of tr avel using Active Parking Assist.
R The border of the parking space must be high
enough at the front and there ar; a kerb, for
instance, is not su1cient.
R The border of the parking space must not be
to o wide. Your vehicle can be manoeuvred into
a position at a maximum angle of 45° tothe
starting position in the parking space.
R A manoeuvring distance of at least 1 m must
beavailable.
Please no tethat you are responsible forth eve hicle
and sur roundings during the entire parking proce-
dure. #
Start theve hicle. #
Switch on the turn signal on the side you
intend toexitth e parking space. &
W WARNING
ARNING Risk of accident due tovehicle
swinging out while parking or pulling out of
a parking space
While parking or exiting a parking space, the
ve hicle swings out and can drive onto areas of
th e oncoming lane.
This could cause youto collide with objects or
ot her road users. #
Pay attention toobjects and other road
users. #
Where necessar y,stop theve hicle or
cancel the parking procedure with Active
Pa rking Assist. #
V
Vehicles wit
ehicles wit h manual tr
h manual tr ansmission:
ansmission: engage 1st
ge ar or reve rsege ar. #
V
Vehicles wit
ehicles wit h aut
h aut omatic tr
omatic tr ansmission:
ansmission: shiTthe
transmission toposition hork.
The Start Parking Assist? Yes: OK No: ~
message is shown in the inst rument cluster
displa y. #
T
To cancel t
o cancel t he pr
he process:
ocess: pressthe~ steer-
ing-wheel button or drive o..
or #
T
To e
o e xit t
xit t he par
he par king space using activ
king space using activ e par
e parking
king
assist
assist ance:
ance: pressthea steering-wheel but-
to n.
The Parking Assist in operation Accelerate
and brake Observe surroundings messageis
shown in the inst rument cluster displa y. #
Release the steering wheel. #
Pull away and be ready tobrake at all times.
Re verse slo wly, and do not drive faster than
10 km/h. Parking assistance is otherwise can-
celled and Active Parking Assist is stopped.
On vehicles with automatic transmission, when
th eve hicle approaches there ar border of the
parking space, Active Parking Assist can brake
it to a standstill.
Manoeuv ring may be requi red in tight parking
spaces. Obser vethe messages in the inst rument
cluster displa y.
On completion of the parking procedure, the
Active Parking Assist finished message appears
and an acoustic signal sounds. Active Parking
Assist no longer supports you with steering inter-
ve ntions and brake applications.
The parking assistance function of Active Parking
Assist is stopped. You will then ha vetosteer and 172
172
Driving and pa
rking

mer
geinto tra1c on your ow n.PA RKTRONIC is still
av ailable. A
A
TTENTION ASSIST
TTENTION ASSIST F
F
unction of A
unction of A TTENTION ASSIST
TTENTION ASSIST
AT TENTION ASSIST can assist you on long, monot-
onous journe ys, e.g. on mo torw ays and trunk
ro ads. If ATTENTION ASSIST de tects indicators of
fa tigue or increased lapses in concentration on the
part of the driver, it suggests taking a break.
AT TENTION ASSIST is only an aid. It cannot alw ays
de tect dr owsiness or increased lapses in concen-
tration in good time. The system is not a substitute
fo r a well-rested and attentive driver. On long jour-
ne ys,ta ke regular and timely breaks that allow you
to rest prope rly.
If fatigue or increased lapses in concentration are
de tected, theATTENTION ASSIST: Take a break!
wa rning appears in the instrument cluster.
Yo u can ackno wledge the message and take a
break if necessar y.Ifyo u do not take a break and
AT TENTION ASSIST continues todetect increasing
lapses in concentration, you will be warned again
aTer a minimum of 15 minutes.
If a warning is displa yed in the inst rument cluster,
th e multimedia system o.ers tosear chfor a rest
area. You can select a rest area and start naviga-
tion tothis rest area. This function can be activa-
te d and deactivated in the multimedia system. Yo
u can ha vethe cur rent ATTENTION ASSIST
assessment displa yed using theAssistance
graphic menu in the on-board computer
(/ page 184).
The following information is displa yed:
R the journey length since the last break
R the attention le vel de term ined byATTENTION
ASSIS T:
- the fuller the bar is, the higher the de tected
attention le vel is
- the bar em pties as attentiveness decreases If
AT TENTION ASSIST cannot calculate the atten-
tion le vel and cannot issue a warning, theSystem
suspended message appears.
The bar display is then dimmed. This is the case,
fo rex ample, if you are predominantly driving at a
speed below 60 km/h or abo ve200 km/h.
Syst
Syst em limits
em limits
AT TENTION ASSIST is active in the 60 km/h to
200 km/h speed range.
The functionality of ATTENTION ASSIST is restric-
te d, and warnings may be dela yed or not occur at
all, in thefo llowing situations:
R the journey lasts less than appr oximately 30
minutes
R thero ad condition is poor (une venro ad sur-
fa ce or po tholes)
R theve hicle is subjected toa st rong crosswind
R you ha vea sporty driving st yle (high cornering
speeds or high rates of acceleration)
R the time is set incor rectly
R youch ange lanes and vary your speed fre-
qu ently in active driving situations
The ATTENTION ASSIST dr owsiness or alertness
assessment is dele ted and restar ted when continu-
ing the journey in thefo llowing situations:
R You switch o. theve hicle.
R Ifyo u unfasten your seat belt and open the
driver's door (e.g. tochange drivers or take a
break).
Deactiv
Deactiv ating or activ
ating or activ ating A
ating ATTENTION ASSIST
TTENTION ASSIST
On-board computer:
4 ò 5
Settings 5
Assistance
5 ATTENTION ASSIST #
Change the setting and con/ rmusing thea
button.
When ATTENTION ASSIST is deactivated, the
é symbol appears in the assistance graphic
in the inst rument cluster displa y.
Yo u can choose between thefo llowing settings:
R Off
R Standard: normal system sensitivity.
R Sensitive: higher system sensitivity. The driver
iswa rned earlier and the attention le vel de tec-
te dby the system is adap ted accordingl y. Driving and parking
173 173

T
T
r
r a1c
a1c Sign Assist
Sign Assist F
F
unction of
unction of Tr
Tra1c
a1c Sign Assist
Sign Assist
Tr a1c Sign Assist aids youby displaying de tected
speed limits and overtaking restrictions in the
inst rument cluster.
Since Tra1c Sign Assist also uses the data stored
in the navigation system, it can also update the
display without de tecting tra1c signs.
The camera also de tects tra1c signs with a restric-
tion indicated byan additional sign (e.g. when
we t).
% Tra1c signs are only displ ayed with there stric-
tion indicated byan additional sign in thefo l-
lowing cases:
R the tra1c signs must be obser ved with the
re striction
R the system is unable toclear lyde term ine
whe ther there striction applies
If th e system de tects that you are driving onto a
section of road in the wrong direction of tr avel, it
triggers a warning. This function is not available in
all countries.
Tr a1c Sign Assist is only an aid and is not alw ays
able tocor rectly display speed limits and overtak-
ing restrictions. The actual tra1c signs always
ha ve priority overth eTra1c Sign Assist displ ay.
Obser vethe no tes on driving systems and your
re sponsibility; you may otherwise failto recognise
dangers (/ page 152).
Ins
Ins tr trument clust
ument clust er display
er display
The Tra1c Sign Assist displ ayappears in theAssis-
tance graphic menu ofthe on-board computer
(/ page 184). 1
Perm issible speed
2 Perm issible speed when there is a restriction
3 Additional sign with restriction (e xample:
unknown restriction)
If Tra1c Sign Assist is not available or cann ot
de term ine the maximum permissible speed, thefo
llowing display appears in the assistance
gr aphic: Syst
Syst
em limits
em limits
The system may be impaired or may not function in
th efo llowing situations:
R Ifth ere is poor visibility, e.g. due toinsu1cient
illumination of the road, highly variable shade
conditions, or due torain, sno w,fog or heavy
spr ay.
R Ifth ere is glare, e.g. from oncoming tra1c,
direct sunlight or re0ections.
R Ifth ere is dirt on the windscreen in the vicinity
of the multifunction camera or if the camera is
misted up, damaged or obscured.
R Ifth e tra1c signs are hard todetect, e.g. due
to dirt or sno w,or because they are co vered,
or due toinsu1cient lighting.
R Ifth ere are ambiguous signs, e.g. tra1c signs
in road works or adjacent lanes.
R Ifth e information in the navigation system's
digital map is incor rect or out-of-date.
A
A ctiv ctiv ating/deactiv
ating/deactiv ating t
ating the
heTr
Tra1c
a1c Sign Assist
Sign Assist
w
w ar
ar ning function
ning function
On-board computer
4 ò 5
Settings 5
Assistance
5 Traffic Sign Assist #
T
To activ
o activ at
ate/deactiv
e/deactiv at
ate:
e: press thea button.
When thewa rning function is active and you pass a
tra1c sign, the inst rument cluster sho ws the tra1c
re gulations (speed limit and overtaking restriction)
fo r /ve seconds. The pr evious menu then reap-
pears automaticall y.
The wrong-w aywarning remains active if you deac-
tivate thewa rning function of Tra1c Sign Assist. Blind Spo
Blind Spo
t Assist
t Assist F
F
unction of Blind Spo
unction of Blind Spo t Assist
t Assist
Blind Spot Assist uses two lateral, rear-facing radar
sensors tomonitor the area directly next toand on
th e side behind theve hicle. 174
174
Driving and parking

&
W
WARNI NG
ARNI NGRisk of accident despite Blind
Spot Assist
Blind Spot Assist does not react toeither sta-
tionary objects or vehicles approaching and
ov ertaking you at a greatly di.erent speed.
Blind Spot Assist cannot warndrivers in these
situations. #
Always pay careful attention tothe tra1c
situation and maintain a safe distance at
th e side of theve hicle. Obser
vethe no tes on driving systems and your
re sponsibility; you may otherwise failto recognise
dangers (/ page 152).
If a vehicle is de tected abo vespeeds of appr ox-
imately 12 km/h and this vehicle subsequently
enters the monitoring range directly next toyour
ve hicle, thewa rning lamp in the outside mir ror
lights up red.
If a vehicle is de tected close toyour vehicle in the
lateral monitoring range and you switch on the turn
signal indicator in the cor responding direction, a
wa rning tone sounds. The redwa rning lamp in the
outside mir ror 0ashes. If the turn signal indicator
re mains switched on, all other de tected vehicles
are indicated only bythe 0ashing of there dwa rn-
ing lamp.
When youove rtake a vehicle, thewa rning only
occurs if the di.erence in speed is less than
appr oximately 20 km/h.
Syst Syst em limits
em limits
Blind Spot Assist may be limited in thefo llowing
situations:
R ifth ere is dirt on the sensors or the sensors
are obscured
R ifth ere is poor visibility, e.g. due tofog, heavy
ra in, snow or spr ay
R if nar row vehicles are within the monitoring
ra nge, e.g. bic ycles
R ifth ero ad has very wide or very nar row lanes
R ifve hicles are not driving in the middle of their
lane
Wa rnings may be issued in er ror when driving
close tocrash bar riers or similar solid lane bor-
ders. Warnings may be inter rupted when driving
alongside long vehicles, forex ample lor ries, for a
prolonged time.
Blind Spot Assist is not operational when reve rse
ge ar is engaged. If
yo u couple up a trailer, make sure that you ha ve
cor rectly es tablished the electrical connection.
Blind Spot Assist is then deactivated and theBlind
Spot Assist currently unavailable See Owner's
Manual message appears in the inst rument cluster
displa y.
A
A ctiv ctiv ating/deactiv
ating/deactiv ating Blind Spo
ating Blind Spo t Assist
t Assist
On-board computer:
4 ò 5
Settings 5
Assistance
5 Blind Spot Assist #
T
To activ
o activ at
ate/deactiv
e/deactiv at
ate:
e: press thea button.
When Blind Spot Assist is activated, grey radar
wa ves propagating towa rdthere ar appear next to
th eve hicle in the assistance graphic in the inst ru-
ment cluster displa y.Ifyo u drive faster than
12 km/h with Blind Spot Assist activated, the
ra dar waves in the assistance graphic are dis-
pla yed in green. Blind Spot Assist is ready for use.
If yo u switch on theve hicle while Blind Spot Assist
is activated, thewa rning lamps in the outside mir-
ro rs light up for appr ox. 1.5 seconds. R
R
ear Cr
ear Cr oss
ossTr
Tra1c
a1c Alert
Alert F
F
unction of R
unction of R ear Cr
ear Cross
oss Tr
Tra1c
a1c Alert
Alert
% The system is only available forve hicles with
Blind Spot Assist.
The system uses thera dar sensors in the bumper.
This wayth e area adjacent totheve hicle is contin-
ually moni tore d. If thera dar sensors are obscured
by vehicles or other objects, de tection is not possi-
ble.
% Also read the no tes on Blind Spot Assist
(/ page 174).
The system can warnof crossing tra1c when
re ve rsing out of a parking space. If the system
de tects a vehicle, thewa rning lamp in the outside
mir ror on the cor responding side lights up red. In a
critical situation, an additional warning tone
sounds.
The Rear Cross Tra1c Ale rtfunction is active
under thefo llowing conditions:
R Blind Spot Assist is activated.
R Reversege ar is engaged or theve hicle is
re ve rsing at walking pace.
The Rear Cross Tra1c Ale rtfunction is una vailable
when driving with a trailer. Driving and parking
175
175

Lane K
Lane K
eeping Assist
eeping Assist F
F
unction of Lane K
unction of Lane K eeping Assist
eeping Assist
Lane Keeping Assist ser vesto protect you against
unintentionally leaving your lane. You are also
wa rned bya noticeable vib ration in the steering
wheel and bythe status symbol 0ashing in the
inst rument cluster. Lane Keeping Assist is only an
aid and is not intended tokeep theve hicle in the
lane without the driver's cooperation.
Obser vethe no tes on driving systems and your
re sponsibility; you may otherwise failto recognise
dangers (/ page 152).
The function is available in the speed range
between 60 km/h and 200 km/h.
The warning is issued when thefo llowing condi-
tions are met at the same time:
R If Lane Keeping Assist de tects lane markings.
R If a front wheel drives over lane markings.
To ensure that you are warned only when neces-
sary and in good time if you cross the lane mar k-
ing, the system de tects cer tain conditions and
wa rnsyo u accordingl y.
The warning vibration occurs earlier under thefo l-
lowing conditions:
R you approach the outer lane marking on a
bend.
R thero ad has very wide lanes, e.g. a mo torw ay.
R the system de tects solid lane markings.
The warning vibration occurs later under thefo l-
lowing conditions:
R you are driving on a road with nar row lanes.
R you cut the corner on a bend.
Syst
Syst em limits em limits
The system may be impaired or may not function in
th efo llowing situations:
R Ifth ere is poor visibility, e.g. due toinsu1cient
illumination of the road, if there are highly vari-
able shade conditions or in rain, sno w,fog or
spr ay.
R Glare from oncoming tra1c, direct sunlight or
re 0ections.
R Thereis dirt on the windscreen in the vicinity
of the multifunction camera or the camera is
misted up, damaged or obscured.
R No or se veral unclear lane markings are pres-
ent for one lane, e.g. in a construction area. R
Ifth e lane markings are wornawa y,dark or
co vered up.
R Ifth e distance totheve hicle in front is too
short and thus the lane markings cannot be
de tected.
R The lane markings change quickl y,e.g. lanes
branch o., cross one ano ther or mer ge.
R The ca rriag ewa y isvery nar row and winding.
A
A ctiv ctiv ating/deactiv
ating/deactiv ating Lane K
ating Lane Keeping Assist
eeping Assist #
Press theÇ button.
If th e indicator lamp in the button is lit, Lane
Ke eping Assist is activated. If all conditions
ha ve been satis/ed, there may be a warning.
If Lane Keeping Assist is activated and you are
driving at speeds abo ve60 km/h and lane
markings are de tected, the lines in the assis-
ta nce display menu of the on-board computer
are shown in green. Lane Keeping Assist is
re ady for use.
When the system switches over, theLane
Keeping Assist on orLane Keeping Assist off
message is shown brie0y in the inst rument
cluster displa y.
% You can /nd information on the assistance
gr aphic menu under "Assistance graphic"
(/ page 184).
Se
Se tting t
tting t he sensitivity of Lane K
he sensitivity of Lane K eeping Assist
eeping Assist
On-board computer:
4 ò 5
Settings 5
Assistance
5 Lane Keeping Assist #
Select theStandard orAdaptive setting. 176
176
Driving and parking

In
theStandard setting, no warning vibration
occurs in thefo llowing situations:
R you operate the turn signal in the cor respond-
ing direction. In this event, thewa rnings are
suppressed for a cer tain period of time.
R a driving saf ety system in tervenes or regulates,
such as ABS, BAS or ESP ®
.
In theAdaptive setting,there will also be no warn-
ing vibration in thefo llowing situations:
R you accelerate hard, e.g. kickdown.
R you brake hard.
R you steer activel y,e.g. swer vetoavo id an
obstacle or change lane quickl y.
R you cut the corner on a sharp bend. T
T
r
railer oper
ailer oper ation
ation N
No
ot
tes on tr
es on tr ailer oper
ailer oper ation
ation &
W
WARNING
ARNING Risk of accident and injury if
th eto ngue weight is exceeded
The car rier system may de tach from theve hi-
cle, thereby endangering other road users. #
Always comply with the permissible
to ngue weight when using a car rier. Yo
u can /n dspeci/cations rega rding the ball neck
on the trailer's identi/cation plate. You can /nd
speci/cations rega rding the trailer on theto wing
ve hicle's identi/cation plate and in theTe ch nical
Data (/ page 279).
Yo u can attach car rier systems such as a bicycle
ra ck or load-bearing implement tothe ball nec k.
When using car rier systems on the ball nec k, the
maximum load capacity is 75 kg.
If th e trailer coupling is de tach able, it is essential
to comply with the operating inst ructions of the
trailer coupling manufactu rer.
Place your vehicle/trailer combination on sur faces
th at are as even as possible and secure it against
rolling away (/ page 150). Couple and uncouple
th e trailer carefull y. No
tethefo llowing rega rding theto ngue weight:
R Make full use of the maximum tongue weight,
where possible.
R Neverfa ll below a legally prescribed minimum
to ngue weight; theto ngue weight must alw ays
be positive.
R Do not exceed or fall below the permissible
to ngue weights – this must be obser ved during
loading and unloading of the trailer.
Do not exceed thefo llowing values:
R Perm itted braked or unbraked towing capacity
The maximum permissible towing capacity for
unbraked trailers is 750 kg.
R Perm issible rear axle load of theto wing vehicle
R Perm issible gross weight of theto wing vehicle
R Perm issible gross weight of the trailer
R Perm issible gross combination weight
R Maximum permissible speed of the trailer
The releva nt permitted values, which must not be
ex ceeded, can be found in thefo llowing places:
R Inyour vehicle documents
R Onthe identi/cation plate of the trailer hitch
R Onthe trailer's identi/cation plate
R Ontheve hicle identi/cation plate
If th ere are discrepancies between theva lues, the
lo we st one shall appl y.
Before driving o., ensure thefo llowing:
R The tyre pressure on there ar axle of theto w-
ing vehicle has been set forth e maximum load.
R The headlamps ha vebeen set cor rectl y.
Comply with the maximum permissible speed of
80 km/h or 100 km/h, even in countries in which
higher speeds are permitted forve hicle/trailer
combinations.
% During trailer operation, remember that
PA RKTRONIC is available only toa limi ted
ex tent, if at all.
% The height of the ball head will change
depending on theve hicle's load. In this case,
use a trailer with a height-adjustable dr awbar. Driving and parking
177
177

V
V
ehicles wit
ehicles wit h a det
h a detac
achable tr
hable tr ailer coupling
ailer coupling
* NO
NOTE
TEIncreased risk of damage toprop-
erty due toattached ball neck #
When the trailer is not coupled or the
bicycle rack is attached, fold in the ball
nec k. Re
duce therisk of damage tothe trailer coupling
and contribute toenvironmental pr otection. If you
do not need the ball nec k,remo veit from the ball
neck mount and /t its co ver in there ar bumper
(/ page 178). Only with the co ver /t ted can the
emission values indicated forre al operation be
achie ved.
% During trailer operation, the permissible gross
ve hicle weight is increased by100 kg forve hi-
cles registered as passenger vehicles. The
maximum permissible rear axle load must be
obser ved. F
F
itting t
itting t he cov
he cov er f
er for tr
or tr ailer coupling
ailer coupling #
Insert the co ver 0ush into there cess on the
re ar bumper and press it upwards against the
bumper co vering at the latching points on the
outside right and leT. #
Turn fastene rsfrom position 1toposition
2. #
Ensure that thefa stene rsare fully engaged and
/rmly in position 2. A
A
tt
tt ac
ac hing t
hing t he ball neck
he ball neck &
W
WARNING
ARNING Risk of accident and injury due
to incor rectly ins talled and secured ball
neck
If th e ball neck is not engaged, it may become
loose while theve hicle is in motion and endan-
ge rot her road users. #
Engage the ball neck as described and
ensure that the ball neck is securely
installed. &
W
WARNING
ARNING Danger of accident due tonon-
engaged ball coupling
If th e ball coupling has not engaged, the trailer
can become de tach ed. #
Always engage the ball coupling as
described and ensure that it is securely
ins talled. R
R
eq
eq uir
uir ements:
ements:
R The trailer hitch key is available. #
Notethe number of theke yth at belongs tothe
ball neck of the trailer hitch.
Wi th th is number, you will receive a replace-
ment key at a Mercedes-Benz service centre.
% Depending on theve hicle equipment, the
holder forth e ball neck on theve hicle can be
pr otected with a co ver in the bumper. #
Release the two quick- re lease fastene rsforthe
co ver in the bumper and remo vethe co ver
( / page 178). #
Take the ball neck of the trailer hitch out of the
st ow age space on theright-hand side in the
re ar and st owthe co verawa y. #
Unlo cklock 6in handwheel 1with thekey.
Re d mark 3onthe handwheel must be
aligned with green area 2on ball neck 4
(/tting position). 178
178
Driving and parking

The
eyelet on the ball neck is used exclusively for
attaching the trailer break away cable. You must
not attach a tow rope, a tow bar or anything similar
to theey elet. The eyelet has not been designed for
such a load and may tear. #
ShiT the transmission toposition j. #
Apply theve hicle's parking brake. #
Close all the doors. #
Position the trailer on a le vel sur face behind
th eve hicle.
% The height of the ball head will change
depending on theve hicle's load. In this case,
use a trailer with a height-adjustable dr awbar. #
Couple up the trailer. #
T
To inst
o inst all an adapt
all an adapt er
er:
:open the co ver of the
soc ket. #
Inse rtplug 2with tab1 inthe soc ket's
gr oo ve 3 . #
Turn plug 2clockwise as far as it will go. #
Letthe co ver engage. #
Attach the cable tothe trailer with cable ties
(only in the case of adap ter cables). #
Make sure that the cable is alw ays slack for
ease of mo vement during cornering. #
Establish all electrical and other connections
to the trailer. In the process, attach the trailer's
break away cable totheey elet on the ball nec k. #
Check that the trailer's lighting system works
proper ly.
A trailer is de tected only if the electrical con-
nection is established cor rectly and the lighting
system is in working order. The function of
ot her systems also depends on this, e.g. ESP ®
,
PA RKTRONIC, Active Parking Assist, Blind Spot
Assist or Lane Keeping Assist. Even if
the trailer is connected cor rectl y,a mes-
sage may ne vertheless appear on the inst rument
cluster display in thefo llowing cases:
R LEDs ha vebeen ins talled in the trailer's lighting
system.
R The cur rent has fallen below the trailer lighting
system's minimum cur rent (50 mA)
% You can connect accessories up toa maxi-
mum of 240 W tothe permanent po wer sup-
pl y. #
Remo veobjects or devices that pr event the
trailer from rolling, e.g. choc ks. #
Release the trailer's parking brake.
U
Uncoupling a tr ncoupling a tr ailer
ailer &
W
WARNING
ARNING Risk of being crushed and
becoming trapped when uncoupling a
trailer
When uncoupling a trailer with an engaged
inertia-activated brake, your hand may become
trapped between theve hicle and the trailer
dr aw bar. #
Do not uncouple trailers with an engaged
overrun brake. *
N NOOTE
TE Damage when uncoupling in a state
of ove rrun Uncoupling in a state of
overrun can damage
th eve hicle. #
Do not uncouple trailers with an engaged
overrun brake. #
ShiT the transmission toposition j. #
Apply theve hicle's parking brake. #
Close all the doors. #
Apply the trailer's parking brake. #
Further secure the trailer against rolling away
with a wheel chock or similar object. #
Remo vethe trailer cables and saf etych ains. #
Uncouple the trailer. 180 180
Driving and parking

Ov
Ov
er
ervie
vie w of t
w of t he ins
he ins tr
trument clust
ument clust er
er Inst
rument cluster (e xample)
1 Speedome ter
2 Display
3 Rev counter
4 Coolant temp erature display
5 Fuel le vel
Speedom et
Speedom eter
er
In vehicles with Active Distance Assist DISTRONIC,
th ere are illuminated segments on the speedome-
te r dial.
These segments show you what speed range is
av ailable:
R Variable limi ter activated (/ page 158)
The segments light up from the start of the
scale tothe selected limit speed.
R Active Distance Assist DISTRONIC switched on
(/ page 161)
One or two segments light up in the sa ved
speed range.
R Active Distance Assist DISTRONIC de tects a
ve hicle in front.
The segments light up from the speed of the
ve hicle in front up tothe sa ved speed.
Yo u can show the speed as a digital speedome ter
on the display as well.
If yo uch ange your vehicle's wheel size, check its
assignment tothe wheel size group (/ page 260).
If th e assignment changes without recoding the
cont rol units in theve hicle, the speedome ter will
not display the speed accuratel y.The cur rent vehi-
cle speed may then be higher than the speed
shown bythe speedome ter. Driving and driving
saf ety systems may then be operationally impaired
or may de tect a malfunction and switch them-
sel ves o..
In some countries, an audible signal will sound
and/or a message will appear on the display when th
eve hicle reaches the maximum speed permitted
by law, e.g. at 120 km/h.
R
R e
ev count
v count er
er
* NO
NOTE
TEEngine damage due tomaximum
engine speed being exceeded If
th e maximum permissible engine speed is
ex ceeded, the engine may be damaged. #
Avoid driving in there d speed range
(danger zone). Outside t
Outside t
em
emper
per atur
atur e display
e display
Yo u should pay special attention toroad conditions
when temp eratures are around freezing point.
The outside temp erature is shown on the inst ru-
ment cluster display (/ page 183).
Changes in the outside temp erature will be dis-
pla yed aTer a short dela y.
Coolant t
Coolant t em
emper
per atur
atur e display
e display &
W
WARNING
ARNING Risk of burns when opening the
bonnet
If yo u open the bonnet in theev ent of an over-
heated engine or /re in the engine compart-
ment, thefo llowing situations may occur:
R You may come into contact with hot gases.
R You may come into contact with other
escaping hot operating 0uids. #
Before opening the bonnet, allow the
engine tocool down. #
Intheev ent of a /re in the engine com-
partment, keep the bonnet closed and
call the /re service. The coolant
temp erature display is located within
th e inst rument cluster's rev counter.
During normal driving and if the coolant le vel is
cor rect, the display is permitted torise to120°C. Ov
Ov
er
ervie
vie w and oper
w and oper ation of t
ation of the on-boar
he on-boar d com-
d com-
put
put er
er &
W
WARNING
ARNING Risk of distraction due toinfor-
mation systems and communications
equipment
If yo u operate information systems and com-
munications equipment integ rated in theve hi-
cle when driving, you could be distracted from Instrument cluster and on-board computer
181 181