2019 MERCEDES-BENZ GLS SUV brake sensor

If no
vehicle is de tected in the adjacent lane and
a lane change is permit ted, the lane change
begins af terth e driver has activated the turn sig‐
nal indicator. This is shown tothe driver with a
green ar row 2 next tothesteering wheel sym‐
bol. The Lane change to the left message also
appears, forex ample. If Active Lane Change
Assi sthas been activated with the turn signal
indicator but a lane change is not immediately
possible, a gr eyarrow 1appears next tothe
st eering wheel symbol, which remains green.
When the lane change assis tance starts, the turn
signal indicator is automatically activated along
with the display in the multifunction displa y.If
th e assis tance graphic is shown when chang‐
ing lanes, the lane change display appears with
an additional ar rowpointing towa rdsth e adja‐
cent lane (/ page 258).
If a lane change is not possible, the ar row fades
out af ter a few seconds and a new lane change
must be initiated. An immediate lane change is
on lypossible 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
clearly if the 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 limits
The sy stem limits of Active Steering Assist apply
to Active Lane Change Assi st (/ page 253).
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.256
Driving and parking

Sy
stem limits
The per form ance of Drive AwayAssi stis limited
on inclines.
When driving with a trailer, Drive AwayAssi stis
not available.
Fu nction of Cross Traf fic Alert
% Also read the instructions on Blind Spot
Assist (/ page 306). Ve
hicles with Blind Spot Assis t:the Cross
Tr af fic Alert function can warndrivers of any
crossing traf fic when reve rsing out of a parking
space. The radar sensors in the bumper also
monitor the area adjacent totheve hicle. If a crit‐ ical situation is de
tected, symbol 1appea rsin
th e multimedia sy stem displa y.Ifth e driver does
not react tothewa rning, theve hicle can be
braked automatically.
If th era dar sensors are obstructed byvehicles
or other objects, de tection is not possible.
The Cross Traf fic Alert function is acti veunder
th efo llowing conditions:
R If Blind Spot Assist is activated.
R Ifth eve hicle is reve rsing at walking pace.
R Ifth e manoeuvring assis tance function is
acti vated in the multimedia sy stem.
The Cross Traf fic Alert function is not available
on inclines and when driving with a trailer.
Fu nction of Cross Traf fic Alert
% Also read the instructions on Blind Spot
Assist (/ page 306). Ve
hicles with Blind Spot Assis t:the Cross
Tr af fic Alert function can warndrivers of any
crossing traf fic when reve rsing out of a parking
space. The radar sensors in the bumper also
monitor the area adjacent totheve hicle. If a crit‐
ical situation is de tected, symbol 1appea rsin
th e media displa y.Ifth e driver does not respond
to thewa rning, theve hicle's brakes can be
applied automaticall y.
If th era dar sensors are obstructed byvehicles
or other objects, de tection is not possible.
The Cross Traf fic Alert function is acti veunder
th efo llowing conditions:
R If Blind Spot Assist is activated. Driving and parking
299

wa
rning, a warning tone sounds and thewa rning
lamp in the outside mir rorst arts toflash.
This additional function is on lyavailable when
Blind Spot Assist is activated and up toa maxi‐
mum of thre e minutes af terth e ignition has
been switched off. The exitwa rning is no longer
av ailable once thewa rning lamp in the outside
mir rorflashes thre e times.
The exitwa rning is only an aid and not a substi‐
tute forth e attention of vehicle occupants. The
re sponsibility for opening and closing the doors
and for leaving theve hicle remains with theve hi‐
cle occupants.
Sy stem limits
Blind Spot Assist and Active Blind Spot Assi st
may be limi ted in thefo llowing situations:
R ifth ere is dirt on the sensors or the sensors
are obscured
R in poor visibility, e.g. due tofog, heavy rain or
snow
R ifth ere are nar row vehicles, e.g. bicycles or
mo torbikes
R ifth ero ad has very wide or nar rowlanes R
ifve hicles are not driving in the middle of
th eir lane
Wa rnings may be issued in er ror when driving
close tocrash ba rriers or similar solid lane bor‐
ders. Alw ays make sure that there is suf ficient
di st ance tothe side forot her traf fic or obs ta‐
cles.
Wa rnings may be inter rupte d when driving along‐
side long vehicles, forex ample lor ries, for a pro‐
longed time.
Blind Spot Assist is not operational when reve rse
ge ar is engaged.
Blind Spot Assist is not operational when a
trailer is coupled totheve hicle and the electrical
connection has been cor rectly es tablished.
The exitwa rning may be limited in thefo llowing
situations:
R When the sensors are co veredby adjacent
ve hicles in nar row parking spaces.
R When people approach theve hicle.
R Intheeve nt of stationary or slowly moving
objects. Fu
nction of brake application (Active Blind
Spot Assist)
The brake application function is only available
fo rve hicles with a Driving Assis tance Pack age.
If Ac tive Blind Spot Assi stdetects a risk of a side
impact in the monitoring range, a cou rse-cor‐
re cting brake application is car ried out. This is
designed tohelp youavo id a collision.
The course-cor recting brake application is availa‐
ble in the speed range between appr oximately
30 km/h and 200 km/h. &
WARNING Risk of accident despi te
brake application of Active Blind Spot
Assi st
A cou rse-co rrecting brake application cann ot
alw ays pr event a collision. #
Alw aysst eer, brake or accelera teyour‐
self, especially if Active Blind Spot
Assi stwa rnsyo u or makes a course-
co rrecting brake application. #
Alw ays maintain a safe dis tance at the
sides. Driving and parking
307

R
Ifth e car riag ewa y is very nar row and wind‐
ing.
Ve hicles with Driving Assistance pac kage or
Driving Assistance Plus pa ckage: Active Lane
Ke eping Assist uses radar sensors tomonitor
se veral areas around theve hicle. If thera dar
sensors in there ar bumper are dirty or co vered
with sn ow,th e sy stem may be impaired or may
not function. If an obs tacle in the lane in which
yo u are driving has been de tected, no lane-cor‐
re cting brake application occu rs.
Ac tivating/deactivating Active Lane Keeping
Assist
Multimedia sy stem:
4 © 5
Settings
5 Schnellzugriff (Quick access)
5 Active Lane Keeping Assist #
Activate or deacti vate the function. Setting
Active Lane Keeping Assist
Multimedia sy stem:
4 © 5
Settings 5
Assistance
5 Act. Lane Keep. Assist
Setting the sensitivity
% The availability of this function is dependent
on the count ry. #
Select Standard ,Sensitive orOff.
Ac tivating/deactivating the haptic warning #
Select Warning.
Ac tivate or deacti vate the function. Tr
ailer hitch Tr
ailer operation no tes Obser
vethefo llowing no tes on theto ngue
we ight:
R do not use a tongue weight that exceeds or
fa lls below the permissible tongue weight
R use a tongue weight as close as possible to
th e maximum tongue weight Do not
exceed thefo llowing values:
R Perm issible towing capacity
R permissible rear axle load of theto wing vehi‐
cle
R permissible gross mass of theto wing vehicle
R permissible gross mass of the trailer
R maximum permissible speed of the trailer
Ensure thefo llowing before starting a journey:
R the tyre pressure on there ar axle of theto w‐
ing vehicle is set for a maximum load
R the lighting of the connected trailer is opera‐
tional
In theev ent of increased rear axle load, the car/
trailer combination may not exceed a maximum
speed of 100 km/h forre asons concerning the
operating permit. This also applies in countri es
in which the permissible maximum speed for
car/trailer combinations is ab ove100 km/h.
Ve hicles with AIRMATIC/ ACTIVE BODY CON‐
TROL: Ifth e soc ket of the trailer hitch is occu‐
pied e.g. bya trailer or rear bicycle rack ,the
ve hicle is set tothe normal le velre ga rdless of Driving and parking
311

Note
s on cleaning and car eA voiding vehicle damage
Exterior lighting Cleanthe lenses with a wet sponge and mild cleaning agent,
e.g. car sha mpoo. Only use cleaning agents or cleaning clo
thsth at are suitable
fo r plast ic lenses.
Sensors Cleanthe sensors in the front and rear bumper and in the
ra diator grille with a soft clo thand car shampoo. When using a high-pressure cleaner, main
tain a minimum dis‐
ta nce of 30 cm.
Side running boards
Usewate r and acid-free cleaning agents. Do not cleanthe aluminium trim insert of theru nning board
wi th alkaline or acidic cleaning agents such as wheel clean‐
ers. Do not use acidic wheel cleaners toremo vebrake dust.
The aluminium trim inserts could otherwise be damaged.
Re versing camera
and 360° Camera R
Open the camera co ver with the multimedia sy stem
(/ page 293).
R Use clean water and a soft clo thtoclean the camera lens. Do not use a high-pressure cleaner.
Ta ilpipes
Clean with cleaning agents recommended byMercedes-Benz,
particularly in the winter and af terwa shing theve hicle. Do not use acidic cleaning agents.
Tr ailer hitch R
Remo vetraces of rust on the ball, e.g. with a wire brush.
R Remo vedirt with a lint-free clo th.
R After cleaning, oil or grease the ball head lightl y.
R Obser vethe no tes on care in the trailer hitch manufactur‐
er's operating instructions. Do not clean
the ball neck with a high-pressure cleaner or sol‐
ve nt. 546
Maintenance and care

#
Switch on the ESP ®
and adapt your
driving style accordingly. #
Use M+S tyres at outside temp eratures
of less than 50 °F. Obse
rveth efo llowing when selecting, fitting and
re placing tyres:
R Countr y-specific requirements for tyre
appro valth at define a specific tyre type for
yo ur vehicle.
Fu rthermore, the use of cer tain tyre types in
cer tain regions and areas of operation can
be highly beneficial.
R Only use tyres and wheels of the same type
(summer tyres, winter tyres, MOEx tended
tyres) and the same make.
R Only fit wheels of the same size on one axle
(left and right).
It is only permissible tofit a di fferent wheel
size in theeve nt of a flat tyre in order to
drive tothe specialist workshop.
R Only fit tyres of the cor rect size onto the
wheels. R
Do not make any modifications tothe brake
sy stem, the wheels or the tyres.
The use of shims or brake dust shields is not
permitted and may in validate theve hicle's
ge neral operating pe rmit.
R Vehicles with a tyre pressure monitoring
sy stem: allfitted wheels mu stbe equipped
with functioning sensors forth e tyre pres‐
sure monitoring sy stem.
R Attemp eratures below 7 °C, use winter tyres
or all-season tyres mar ked M+S for all
wheels.
Wi nter tyres bearing thei snowflake
symbol in addition tothe M+S marking pro‐
vide the best possible grip in wintry road
conditions.
R For M+S tyres, only use tyres with the same
tread.
R Obser vethe maximum permissible speed for
th e M+S tyres fitted.
If th is is below theve hicle's maximum speed,
th is must be indicated byan appropriate
label in the driver's field of vision. R
Run in new tyres at moderate speeds forthe
fi rs t10 0 km.
R Replace the tyres af ter six years at the latest,
re ga rdless of wear.
R When replacing with tyres that do not
fe ature run-flat characteristics: vehicles
with MOExtended tyres are not equipped
with a TIREFIT kit at thefa ctor y.Equip the
ve hicle with a TIREFIT kit af terre placing with
tyres that do not feature run-flat characteris‐
tics, e.g. winter tyres.
% You can permanently limit the maximum
ve hicle speed for driving with winter tyres
(/ page 245).
Fo r more information on wheels and tyres, con‐
ta ct a qualified specialist workshop.
Be sure toalso obse rveth efo llowing fur ther
re lated subjects:
R Notes on tyre pressure (/ page571)
R Tyre pressure table (/ page572)
R Notes on the emer gency spa rewheel
(/ page 588) 582
Wheels and tyres

¯Ad
Blue system fault Perf.
re duced in XXX miles See Owner's
Manual ................................................ 646
¯ AdBlue sy stem fault Perf.
re duced: XXX km/h Nostart in XXX
km ...................................................... .646
¯ AdBlue sy stem fault See Own‐
er's Manual ........................................ .646
4Ad d 1 litre engine oil when next
re fuelling ............................................. 642
Anti-theft alarm sy stem Malfunction ... 660
Apply brake todeselect Park (P)
position ...............................................6 47
App lybrake toselect R ........................ 648
À ATTENTION ASSIST inoperative ... 625
ÀAT TENTION ASSIS T:Take a
break! .................................................. 625
bAu tomatic driving lights inoper‐
ative .................................................... 663
Au xilia rybattery malfunction ..............649Beginning eme
rgency stop .................. 628
Blind Spot Assist cur rently una vaila‐
ble See Owner's Manual ...................... 630
Blind Spot Assist inope rative ............... 630
Blind Spot Assi stnot available when
to wing a trailer See Owner's Manual ...6 30
Cannot start engine See Owner's
Manual ................................................ 639
ÁChan gekey bat teries .................. 655
JCheck brake fluid le vel................ .619
Check brake pads See Owner's Man‐
ual ........................................................ 61 9
ï Check trailer hit chlock (white
display message) ................................ .657
Check tyre pressures then restart
Ru n Flat Indicator ................................ 651
hCheck tyre(s) ............................... 652
!Clean the fuel filter ...................... 640
Á Compressor is cooling ................ 629?Coolant
Stop vehicle Switch
engine off ............................................ 637
Cruise contro l and Limiter inope ra‐
tive ...................................................... 635
Cruise control inope rative ................... 635
Cruise control off ................................ 635
_Cur rently una vailable Camera
view restricted ..................................... 633
çCu rrently unavailable Radar
sensors dirty .......................................6 32
!cur rently una vailable See Own‐
er's Manual .......................................... 612
÷ currently una vailable See Own‐
er's Manual .......................................... 61 3
Drive sy stem Malfunction Stop
Switch engine off ................................. 641
Drive sy stem Malfunction Visit work‐
shop ..................................................... 641
5 Engine oil le vel cannot be
measured ............................................ 644690
Index

PRE-SAFE impulse side inoperative
See Owner's Manual ............................624
PRE-SAFE inoperative See Owner's
Manual ................................................ 624
hRe ctify tyre pressure ................... 653
Re duce speed ...................................... 654
ØRe fill Ad Blue Engine start not
possible .............................................. .645
ØRe fill Ad Blue See Owne r’s Man‐
ual .......................................................6 44
! Release parking brake .................616
¸ Replace air cleaner ......................641
À Replace key See Owner's Man‐
ual ...................................................... .654
Á Replace key ................................ .655
8Re servefuel le vel........................ 640
6 Restra int sys. malfunction Con‐
sult workshop ...................................... 620
Re versing not poss. Consult work‐
shop ....................................................6 48Risk of
vehicle rolling away Apply
pa rking brake See Owner's Manual .....6 49
Risk of vehicle rolling Driver door
open and transmission not in P ...........647
Ru n Flat Indicator inope rative ............. 652
#See Owner's Manual ................... 638
Speed limit (winter tyres) XXX km/h ... 636
Speed Limit Assi stinope rative ........... .631
Ù Steering malfunction Incre ased
ph ysical ef fort See Owner's Manual .... 659
ÙSt eering malfunction Stop
immediately See Owner's Manual .......659
St op vehicle Lea veengine running
Wa itTransmission cooling ...................649
#St opvehicle Lea veengine run‐
ning ..................................................... 639
#St opvehicle See Owner's Man‐
ual .......................................................6 38
çsuspended .................................. 634
bSwitch off lights .......................... 663 bSwitch on headla
mps.................. 663
To shift out of P or N,depress brake
and start engine .................................. 647
Ø Top up AdBlue Perf.re duced in
XXX miles See Owner's Manual ...........645
Ø Top up AdBlue Perf.re duced:
XXX km/h Nostart in XXX km ............645
To p up coolant See Owner ’sManual ... 637
¥To p upwasher fluid .................... .661
Tr af fic Sign Assi stcur rently una vaila‐
ble See Owner's Manual ...................... 631
Tr af fic Sign Assi stinope rative ............. 631
ïTr ailer coupling extending… ......... 657
Tr ansmission Malfunction Stop ........... 648
! Turn on the ignition torelease
th e parking brake ................................. 61 5
h Tyre press. monitor cur rently
una vailable .......................................... 650
hTy repress. monitor inoperative
No wheel sensors ................................ 651692
Index