permissible speed applying
for a vehicle with a
trailer is not de tected bythe sy stem. In these sit‐
uations you must adjust your speed yourself. &
WARNING Risk of accident due toActive
Speed Limit Assi stadapting theve hicle's
speed
The speed adop tedby Active Speed Limit
Assi stmay be too high or incor rect in some
individual cases, su chas:
R Inthewe t or in fog
R When towing a trailer #
Ensure that the driven speed complies
with traf fic re gulations. #
Adjust the driving speed tosuit cur rent
traf fic and weather conditions. Fu
nction of route-based speed adaptation %
The following function is country dependent
and only available forve hicles with the Driv‐
ing Assis tance Package Plus and factory nav‐
igation. When Dis
tance Assi stDISTRONIC is acti ve,the
function adju ststh e speed depending on the
ro ute events ahead. Depending on the drive pro‐
gram selected, theve hicle negotiates thero ute
eve nt ahead in a fuel-s aving, com fortable or
dynamic manner. When thero ute event has been
passed, theve hicle accelerates again tothe
st ored speed. The set dis tancetotheve hicle
ahead, vehicles de tected ahead and speed
re strictions ahead are take n into account.
Ro ute-based speed adjustment can byconfig‐
ured in the multimedia sy stem (→ page 239).
Ro ute events ahead are:
R Bends
R T-junctions, roundabouts and tollst ations
R Turns and exits
% When theto llst ation is reached, Active Dis‐
ta nce Assi stDISTRONIC adopts the speed as
th estored speed.
Also, the speed is reduced if the turn signal to
ch ange lanes is swit ched on and one of thefo l‐
lowing situations is de tected:
R Turning off at junctions R
Driving on slowing-down lanes
R Driving on lanes adjacent toslowing-down
lanes
The driver is responsible forch oosing theright
speed and observing other road users. This
applies in particular tojunctions, roundabouts
and sets of traf fic lights, as route-based speed
adap tation does not brake theve hicle toast and‐
st ill.
When route guidance is active, thefirs t speed
adjustment is car ried out automaticall y.Ifthe
turn signal indica tor is switched on, the selected
ro ute is confirmed and fur ther speed adjustment
is activated.
Speed adjustment is cancelled in thefo llowing
cases:
R Ifth e turn signal indicator is switched off
before thero ute event.
R Ifth e driver depresses the accelera tor or
brake pedal during the process.
Sy stem limitations
Ro ute-based speed adap tation does not take
ri ght of wayre gulations into account. The driver 238
Driving and parking
If
th e sy stem reaches a sy stem limitation or the
driver has not steered theve hicle for a consider‐
able period of time or has remo vedth eir hands
from thesteering wheel, the sy stem will,
depending on the situation, firs t alert the driver
with a visual warning. Display 1appears in the
multifunction displa y.Ifth e driver still does not
st eer theve hicle, or has still not take n hold of
th esteering wheel, a repeated warning tone
sounds in addition tothe visual warning mes‐
sage toremind the driver totake control of the
ve hicle.
The warning message does not appear or disap‐
pears if one of thefo llowing conditions are me t:
R The driver steers theve hicle. R
The driver presses a steering wheel button or
operates Touch Control.
Ac tive Steering Assist is only an aid. The driver is
re sponsible forth e dis tance totheve hicle in
front, forve hicle speed, for braking in good time
and forst ay ing in lane. Before changing lanes,
th e driver must make sure that the neighbouring
lane is free (glance over the shoulder).
Sy stem limitations of Active Steering Assist
Ac tive Steering Assist has a limited steering tor‐
qu efo r lateral guidance. In some cases, the
st eering inter vention is not su fficient tokeep the
ve hicle in the lane.
If th e de tection of lane markings and vehicles
ahead is impaired, Active Steering Assist
switches topassive mode. The sy stem pr ovides
no support in this case. During the transition
from the active topassive status, theè sym‐
bol is shown as enlar ged and flashes yello w.
Once the sy stem is passive, theè symbol is
shown as gr eyinthe multifunction displa y.The sy
stem may be impaired or may not function
in thefo llowing situations:
R Ifth ere is poor visibility, e.g. due toinsuf fi‐
cient illumination of thero ad, or due tosno w,
ra in, fog or heavy spr ay.
R Ifth ere is glare, e.g. from oncoming traf fic,
di re ct sunlight or reflections (e.g. if thero ad
sur face is wet).
R Ifth e windscreen is dirty, mis ted up, dam‐
aged or co vered, for ins tance byast icke r,in
th e vicinity of the camera.
R If no, or se veral, unclear lane markings are
present for one lane, e.g. in a construction
area.
R Ifth e lane markings are wornaw ay, dark or
co vered up, e.g. bydirt or sno w.
R Ifth e dis tance totheve hicle in front is too
small and the lane markings thus cannot be
de tected.
R Ifth e lane markings change quickl y,e.g.
lanes branch off, cross one ano ther or
mer ge.
R Ifth ero adw ayis nar rowand wind y. 240
Driving and pa rking
only possible on mo
torw ay sections without
speed limits.
If th e sy stem is impaired, Active Lane Change
Assi stmay be cancelled. If it is cancelled, the
Lane change cancelled message appears inthe
multifunction display and a warning tone sounds. &
WARNING Risk of accident from chang‐
ing lane toan occupied adjacent lane
Lane Chan geAssi stcannot al ways detect
clear lyifth e adjacent lane is free.
The lane change might be initiated although
th e adjacent lane is not free. #
Before changing lanes, make sure that
th e neighbouring lane is free and there
is no danger to otherroad users. #
Monitor the lane change. &
WARNING Risk of accident if Lane
Change Assi stunexpectedly stops func‐
tioning
If th e sy stem limitations for Lane Change
Assist ha vebeen reached, there is no guar‐
antee that the sy stem will remain active.
Lane Change Assist cannot then assist you
by applying steering torques. #
Alw ays monitor the lane change and
ke ep your hands on thesteering wheel.
Obser vethe tra ffic conditions and steer
and/or brake if necessar y. Sy
stem limitations
The sy stem limitations of Active Steering Assist
apply toActive Lane Change Assi st
( → page 239).
The sy stem may also be impaired or may not
function in thefo llowing situations:
R The sensors in there ar bumper are dirty,
damaged or co vered, for ins tance by a
st icke r or ice and sno w.
R The exterior lighting sho wsa malfunction. Ac
tivating/deactivating Active Lane Change
Assi st
Multimedia sy stem:
, © .
Settings .
Assistance .
Act.
lane chan. assist #
Activate or deacti vate the function.
Fu nction of Active Eme rgency Stop Assist
If th e driver continues toigno rethewa rning to
put their hands on thesteering wheel, Active
Dis tance Assi stDISTRONIC reduces the speed.
If th e driver still does not respond, theBegin-
ning emergency stop message is shown inthe
multifunction displa y.The vehicle is decelerated
in stages toast andstill. Atspeeds below
60 km/h the hazard warning lights switch on
automaticall y.
When theve hicle is stationar y,thefo llowing
actions are car ried out:
R theve hicle is secured with the electric park‐
ing brake
R Active Dis tance Assi stDISTRONIC is ended
R theve hicle is unloc ked 242
Driving and pa rking
Assistant display
1
Route-based speed adap tation (type of route
eve nt)
2 Vehicle ahead
3 Distance indica tor
4 Set specified di stance
5 Active Lane Change Assi stlane change dis‐
play Ac
tive Di stance Assist DISTRO NICstatus dis‐
play and route-based speed adaptation 1
Active Dis tance Assi stDISTRONIC selected,
set speci fied dis tance
2 Active Dis tance Assi stDISTRONIC deacti va‐
te d, speed stored 3
Active Dis tance Assi stDISTRONIC acti ve,
speed stored, no vehicle de tected (bright
ve hicle symbol)
4 Active Dis tance Assi stDISTRONIC acti ve,
speed stored, vehicle de tected (green vehi‐
cle symbol)
5 Active Dis tance Assi stDISTRONIC and route-
based speed adap tation acti ve, speed stored
% On mo torw ays or high-speed major roads,
th e green çvehicle symbol is displa yed
cyclically when theve hicle is ready topull
aw ay.
% Ifyo u depress the accelerator pedal be yond
th e setting of theAc tive Dis tance Assi st
DISTRONIC, the sy stem is switched topas‐
sive mode. The çsuspended message
appears on the multifunction displa y.
Speedome ter
The stored speed is highlighted on the speedom‐
et er. If the speed of theve hicle ahead or the
speed adjustment is less than thestored speed
due tothero ute event ahead, the segments in
th e speedome ter light up. Activation or deacti va‐
tion of Active Dis tance Assi stDISTRONIC, as 244
Driving and pa rking
Setting
theve hicle le vel &
WARNING Risk of accident because
ve hicle le vel is too high
If yo u drive at a higher vehicle le vel,th e driv‐
ing characteristics may be impaired due to
th e higher vehicle centre of gravity.
The vehicle can drift outwards, forex ample,
when steering or cornering. #
Alw aysch oose a vehicle le vel which is
suited tothe driving style and thero ad
sur face conditions. &
WARNING Risk of entrapment from vehi‐
cle lo wering
When lo wering theve hicle, other people
could become trapped if their limbs are
between theve hicle body and the tyres or
underneath theve hicle. #
Make sure no one is underneath the
ve hicle or in the immediate vicinity of
th e wheel ar ches when you lo werthe
ve hicle. &
WARNING Risk of entrapment from vehi‐
cle lo wering
Ve hicles with AIRMATIC or le vel control:
when you unload luggage or lea vetheve hi‐
cle, theve hicle firs trises slightly and then
re turns tothe set le vel shortly af terw ards.
Yo u or an yone else in the vicinity of the
wheel ar ches or the underbody could thus
become trapped.
The vehicle can also be lo wered af ter being
loc ked. #
When leaving theve hicle, make sure
th at nobody is in the vicinity of the
wheel ar ches or the underbody. Re
quirements:
R The vehicle has been star ted.
R Vehicles without Off-road pac kage: the
ve hicle is not moving fasterthan 65 km/h.
R Vehicles with Off-road pac kage:
- Off-road le vel +1: theve hicle is not mov‐
ing fast erthan 100 km/h -
Off-road le vel +2: theve hicle is not mov‐
ing fast erthan 65 km/h
- Off- road le vel +3: theve hicle is not mov‐
ing fast erthan 20 km/h
Dif fere nces between dif fere nt vehicle le vels
compared tothe normal le vel Ve
hicle
le vel Ve
hicles
without Off-
ro ad pac kage Ve
hicles with
Off-road pack‐
age
Car wash Appr ox.
+90 mm Appr
ox.
+90 mm
Off-road
le ve l +3 Una
vailable Appr ox.
+90 mm
Off-road
le ve l +2
Ve hicles
with AIR‐
MATIC:
ra ised le velApp
rox.
+60 mm App
rox.
+60 mm
Off-road
le ve l +1 Una
vailable Appr ox.
+30 mm 250
Driving and parking
Ve
hicle
le vel Ve
hicles
without Off-
ro ad pac kage Ve
hicles with
Off-road pack‐
age
Spor tA pprox.
-15 mm App
rox.
-15 mm
Spo rt+A pprox.
-25 mm App
rox.
-25 mm Ra
ising theve hicle (vehicles without Off-
ro ad pac kage) #
Push rocker switch 1forw ards.
Indicator lamp 2flashes while theve hicle is
being raised and lights up continuously when
it has finished rising. Yo
ur selection is sa ved. The off-road le vel set
re mains stored even af terth e ignition has been
switched off.
The vehicle is lo wered again in thefo llowing sit‐
uations:
R When driving fasterthan 80 km/h.
R When driving brief ly between 65 km/ h and
80 km/h.
R After selecting a dif fere nt drive program
using theDY NA MIC SELECT switch.
The vehicle is adjus tedto the height of the
active drive prog ram.
Lo weri ngtheve hicle (vehicles without Off-
ro ad pac kage) #
Pull rock er switch 1.
The vehicle is adjus tedto the height of the
active drive program. Driving and parking
251
Ra
ising theve hicle (vehicles with Off-road
pac kage) #
Push rocker switch 1forw ards.
R Off- road le vel +1: one indicator lamp 2
lights up continuously when theve hicle
has finished rising.
R Off-road le vel +2: two indicator lamps 2
light up continuously when theve hicle
has finished rising. R
Off-road le vel +3: thre e indicator lamps
2 light up continuously when theve hicle
has finished rising.
Yo ur selection is sa ved. The off-road le vel set
re mains stored even af terth e ignition has been
switched off.
The vehicle is lo wered again in thefo llowing sit‐
uations:
R Off- road le vel +3: when driving fasterthan
20 km/h.
The vehicle is lo weredto off-road le vel +2.
R Off- road le vel +2:
- When driving fasterthan 80 km/h.
- When driving brief ly between 65 km/h
and 80 km/h.
The vehicle is lo weredto off-road le vel +1.
R Off- road le vel +1:
- When driving fasterthan 115 km/h.
- When driving brief lybetween 100 km/h
and 115 km/h.
The vehicle is lo weredto the normal le vel. R
After selecting a dif fere nt drive program
using theDY NA MIC SELECT switch.
The vehicle is adjus tedto the height of the
active drive program.
Lo weri ngtheve hicle (vehicles with Off-road
pac kage) #
Pull rock er switch 1.
R Off-road le vel +3: theve hicle is lo wered
to off-road le vel +2. Two indicator lamps
2 light up continuously when theve hicle
has finished lo wering.
R Off-road le vel +2: theve hicle is lo wered
to off-road le vel +1. One indicator lamp
2 lights up continuously when theve hi‐
cle has finished lo wering.
R Off-road le vel +1: theve hicle is lo wered
to the normal le vel. No indicator lamp 2
lights up when theve hicle has finished
lo we ring.
Yo ur selection is sa ved. The off-road le vel set
re mains stored even af terth e ignition has been
switched off. 252
Driving and parking
RO
AD SUR FACE SCAN:
R Monitors thero ad in front of theve hicle
using multifunction camera 1.
R Is active when one of drive programs A
(Comfort) or N(CURVE) is selected.
R Detects une venness in thero ad sur face, e.g.
bu mp s, before theve hicle drives overth em.
R Reduces chassis mo vements. Sy
stem limitations
RO AD SUR FACE SCAN can be impaired in the
fo llowing situations or can stop functioning:
R Ifth e car riag ewa y is insuf ficiently lit, e.g. at
night.
R In sno w,rain, fog, heavy spr ay, if there is
gl are, in direct sunlight or in great lyvarying
light conditions.
R Ifth e windscreen in the area of multifunction
camera 1is dirty, mis ted up, damaged or
co vered.
R Ifth ero ad sur face has no optic stru cture or
re flects light.
R Ifth e dis tance totheve hicle in front is too
short.
R If sections of thero ute ha veave ry small
ra dius of cur vature.
R During dynamic driving manoeuv res, e.g. if
yo u accelerate or brake theve hicle sharply.
R Atspeeds below 7 km/h or abo ve
18 0 km/h.
R Ifth eve hicle is at a raised le vel or in drive
program C(Sport) or B(Sport Plus). Obser
vethe no tes on cleaning the multifunction
camera (→ page 499).
Fr ee driving mode &
WARNING Risk of inju rydue totheve hi‐
cle moving up and down
When free driving mode is activated, the
ve hicle bounces up and down. Body parts
could become trapped if they are between
th eve hicle body and the tyres or underneath
th eve hicle. #
Make sure that nobody is under or in
th e immediate vicinity of theve hicle
when free driving mode is activated. *
NO
TERisk of dama gedue totheve hicle
moving up and down When free driving mode is activated,
the
ve hicle bounces up and down. Vehicle parts
may be damaged if the underbody bottoms
out. 258
Driving and parking