2021 MERCEDES-BENZ GLS SUV Owners Manual

4
Front camera
5 Corner radars
6 Ultrasonic sensors
7 Reversing camera &
W
WARNING
ARNING Risk of accident due torestric-
te d de tection per form ance of vehicle sen-
sors and cameras
If th e area around vehicle senso rsor cameras
is co vered, damaged or dirty, cer tain driving
and saf ety sy stems cannot function co rrectl y.
There is a risk of an accident. #
Keep the area around vehicle senso rsor
cameras clear of any obst ructions and
clean. #
Have damage tothe bumper, radiator
gr ille or stone chipping in the area of the
front and rear wind owsre paired at a
qu ali/ed specialist workshop. Pa
rticular ly,ke ep the areas around the sensors
and cameras free of dirt, ice or slush
(/ page 376). The sensors and cameras must not be co
vered and the de tection ranges around
th em must be kept free. Do not at tach additional
licence plate brac kets, advertisements, stic kers,
fo ils or foils toprotect against stone chippings in
th e de tection range of the sensors and cameras.
Make sure that there are no overhanging loads
pr otru ding into the de tection range.
If th ere is damage toa bumper or thera diator
gr ille, or aTer an impact, ha vethe function of the
senso rschecked at a quali/ed specialist work-
shop. Ha vedamage or stone chipping in the area
of the cameras on the front and rear wind ows
re paired at a quali/ed specialist workshop. Ov Ov
er
ervie
vie w of dr
w of dr iving syst
iving syst ems and dr
ems and dr iving safe
iving safety
ty
syst
syst ems
ems R
ABS (A Anti-lock B Braking S System) (/ page 231)
R O.-road ABS (/ page 231)
R BAS (BBra ke AAssist S System) (/ page 231)
R ESP ®
(EElectronic S Stability P Program)
(/ page 232)
R ESP ®
Crosswind Assist (/ page 233) R
ESP ®
trailer stabilisation (/ page 233)
R EBD (E Electronic B Brakeforc e DDistribution)
(/ page 235)
R STEER CONTROL (/ page 235)
R HOLD function (/ page 235)
R Hill Start Assist (/ page 236)
R Adaptive Brake Lights (/ page 236)
R ATTENTION ASSIST (/ page 237)
R Cruise cont rol (/ page 238)
R Limiter (/ page 239)
R Tra1c Sign Assist (/ page 259)
R Speed Limit Assist (countr y-dependent)
(/ page 258)
R AIRMATIC (/ page 267)
R E-AC TIVE BODY CONTROL (/ page 273)
R Trailer Manoeuv ring Assist (/ page 297)
Dr
Dr iving Assist
iving Assist ance pack
ance package
age
The following functions are part of the Driving
Assistance Package. Cer tain functions are only
av ailable in some countries. Some functions are 230
230
Driving and parking

also
available without the Driving Assistance
Pa ckage, albeit with restric ted functionality.
R Active Distance Assist DISTRONIC
(/ page 241)
R Active Speed Limit Assist (countr y-dependent)
(/ page 246)
R Route-based speed adap tation (countr y-
dependent) (/ page 247)
R DSR (DD ow nhill S Speed R Regulation)
(/ page 249)
R Active Brake Assist (/ page 253)
R Active Steering Assist (countr y-dependent)
(/ page 251)
R Active Emer gency Stop Assist (countr y-
dependent) (/ page 253)
R Active Stop-and-Go Assist (countr y-depend-
ent) (/ page 248)
R Blind Spot Assist and Active Blind Spot Assist
with exitwa rning (/ page 261)
R Active Lane Keeping Assist (/ page 264)
P
P ar
ar king P
king P ack
ackage
age
R Reversing camera (/ page 281) R
360° Camera (/ page 283)
R Parking Assist PARKTRONIC (/ page 287)
R Active Parking Assist (/ page 291) F
F
unctions of ABS
unctions of ABS The Anti-lock Brake System (ABS)
regula testhe
brake pressure in critical driving situations:
R During braking, for instance, at maximum full-
stop braking or if there is insu1cient tyre trac-
tion, the wheels are pr evented from locking.
R Vehicle steerability while braking is ensu red.
If ABS inter venes when braking, you will feel a
pulsing in the brake pedal. The pulsating brake
pedal can be an indication of hazardous road con-
ditions and can ser veas a reminder totake extra
care while driving.
Syst Syst em limits
em limits
R ABS is acti vefrom speeds of approx. 5 km/h.
R ABS may be impaired or may not function if a
malfunction has occu rred and theye llow !
ABS warning lamp lights up continuously aTer
th eve hicle is star ted. F F
unctions of
unctions of O.-r
O.-road
oad ABS
ABS %
O.-road ABS is activated automatically when
yo u select theF orG drive prog ram.
O.-road ABS is specially adap tedfo r driving o.-
ro ad:
R The front wheels lock cyclical lyduring braking.
R The braking distance is shor tened due tothe
digging-in e.ect.
Syst
Syst em limits
em limits
R O.- road ABS functions at speeds below
40 km/h.
R If O.-road ABS inter venes, the ability tosteer
ma y be restric ted. F
F
unction of B
unction of B AS
AS &
W
WARNING
ARNING Risk of an accident caused by a
malfunction in BAS(Brake Assist System)
If BAS is malfunctioning, the braking distance
in an emer gency braking situation is
increased. Driving and parking
231
231

#
Depress the brake pedal with full forc e in
emer gency braking situations. ABS pre-
ve nts the wheels from locking. The Brake Assist System (BAS) supports
your
emer gency braking situation with additional brake
fo rc e.
If yo u depress the brake pedal quickl y,BAS is
activated:
R BAS automatically boosts the brake pressure.
R BAS can shor tenth e braking distance.
R ABS pr events the wheels from locking.
The brakes will function as usual once youre lease
th e brake pedal. BASis deactivated. F
F
unctions of ESP
unctions of ESP ®
®&
W
WARNING
ARNING Risk of skidding if ESP ®
is
deactivated
If yo u deactivate ESP ®
, ESP ®
cannot car ryout
ve hicle stabilisation. #
ESP ®
should only be deactivated in the
fo llowing situations. *
N
NOOTE
TE Mercedes-AMG vehicles #
Obser vethe no tes in the Supplement.
Yo u could otherwise failto recognise
dangers. The Electronic
Stability Prog ram (ESP ®
) can moni-
to r and impr ove driving stability and traction in
th efo llowing situations within ph ysical limits:
R When pulling away on wet or slippery car riage-
ways.
R When braking.
If th eve hicle deviates from the direction desired
by the driver, ESP ®
can stabilise theve hicle by
inter vening in thefo llowing ways:
R One or more wheels are braked.
R The engine output is adap ted according tothe
situation. ESP
®
is deacti vated if theå ESP®
OFF warn-
ing lamp lights up continuously in the inst rument
cluster:
R Driving stability will no longer be impr oved.
R The drive wheels could spin.
R ETS/4ETS traction control is still active.
% When ESP ®
is deactivated, you are still assis-
te dby ESP ®
when braking.
If th e÷ ESP®
wa rning lamp 0ashes in the
inst rument cluster, one or se veral wheels has
re ached its grip limit:
R Adapt your driving style tosuit the cur rent
ro ad and weather conditions.
R Do not deactivate ESP ®
.
R Only depress the accelerator pedal as far as is
necessary when pulling away.
It can be advantageous todeactivate ESP ®
in the
fo llowing situations toimpro vetraction:
R When using snow chains.
R In deep sno w.
R On sand or grav el. 232
232
Driving and parking

%
Spinning the wheels results in a cutting
action, which enhances traction.
If th e÷ ESP®
wa rning lamp lights up continu-
ousl y,ESP ®
is not available due toa malfunction.
Obser vethefo llowing information:
R Indicator and warning lamps (/ page 504)
R Display message s (/page 442)
ET
ET S/4ET
S/4ET S (Electr
S (Electr onicTr
onic Traction Syst
action Syst em)
em)
ETS/4ETS traction cont rol is part of ESP ®
and
makes it possible topull away and accelerate on a
slippery car riag ew ay.
If yo u select theF orG drive prog ram, a
special ETS system speci/cally suited too.-road
te rrain is automatically activated.
ETS/4ETS can impr ovetheve hicle's traction by
inter vening in thefo llowing ways:
R The drive wheels are braked individually if they
spin.
R More drive torque is tr ansferredto the wheel
or wheels with traction. In0uence
In0uence of dr
of driv
ive pr
e pr ogr
ograms on ESP
ams on ESP ®
®
The drive prog rams enable ESP ®
to adapt todif-
fe re nt we ather and roadconditions as well as the
driver's prefer red driving style. Depending on the
selected drive prog ram, the appropriate ESP ®
mode will be activated. You can select the drive
prog rams using theDY NAMIC SELECT switch
(/ page 207). F
F
unction of ESP
unction of ESP ®
®
Cr
Cr osswind Assist
osswind Assist ESP
®
Crosswind Assist de tects sudden gusts of
side wind and helps the driver tokeep theve hicle
in the lane:
R ESP ®
Crosswind Assist is active at vehicle
speeds between appr ox. 75 km/h and
200 km/h when driving straight ahead or cor-
nering slightl y.
R The vehicle is stabilised bymeans of individual
brake application on one side. F F
unction of ESP
unction of ESP ®
®
tr
trailer st
ailer st abilisation
abilisation &
W
WARNING
ARNING Risk of accident in poor road
and weather conditions
In poor road and weather conditions, the
trailer stabilisation cannot pr event lur ching of
th eve hicle/trailer combination. Trailers with a
high cent reofgrav ity may tip over before
ESP ®
de tects this. #
Always adapt your driving style tosuit
th e cur rent road and weather conditions. When driving with a trailer, ESP
®
can stabilise
yo ur vehicle if the trailer begins toswer vefrom
side toside:
R ESP ®
trailer stabilisation is active abo ve
speeds of 65 km/h.
R Slight swerving is reduced bymeans of a tar-
ge ted, individual brake application on one
side.
R Intheev ent of se vere swerving, the engine
output is also reduced and all wheels are
braked. Driving and parking
233
233

ESP
®
trailer stabilisation may be impaired or may
not function if:
R The trailer is not connected cor rectly or is not
de tected proper lyby theve hicle. A
A
ctiv
ctiv ating/deactiv
ating/deactiv ating ESP
ating ESP®
®
(Electr
(Electr onicSt
onic Stability
ability
Pr
Pr ogr
ogr am) (v
am) (v ehicles wit
ehicles wit hout
houtO.-r
O.-road
oadpack
pack ag
age)
e) Multimedia system:
4 © 5
Settings 5
Quick access
% ESP®
can only be activated/deactivated using
qu ick access when at least one other function
is available in quick access. ESP ®
can other-
wise be found in theAssistance menu.
* N
NOOTE
TE Mercedes-AMG vehicles #
Obser vethe no tes in the Supplement.
Yo u could otherwise failto recognise
dangers. #
Select ESP. #
Select Onorå Off. ESP
®
is deactivated if theå ESP®
OFF warn-
ing lamp lights up continuously in the instrument
cluster.
Obser vethe information on warning lamps and
display message s which may be shown in the
inst rument cluster. A A
ctiv
ctiv ating/deactiv
ating/deactiv ating ESP
ating ESP®
®
(Electr
(Electr onicSt
onic Stability
ability
Pr
Pr ogr
ogr am) (v
am) (v ehicles wit
ehicles wit h
hO.-r
O.-r oad
oadpack
pack ag
age or E-
e or E-
A
A ctiv
ctiv e Body Contr
e Body Contr ol)
ol) *
N
NOOTE
TE Mercedes-AMG vehicles #
Obser vethe no tes in the Supplement.
Yo u could otherwise failto recognise
dangers. #
Pull rock er switch 1.
ESP ®
is deactivated if theå ESP®
OFF warn-
ing lamp lights up continuously in the inst rument
cluster.
Obser vethe information on warning lamps and
display message s which may be shown in the
inst rument cluster. 234 234
Driving and parking

F
F
unction of EBD
unction of EBD Electronic Breakforce Distribution (EBD) is
char-
acterised bythefo llowing:
R Monitoring and regulating the brake pressure
on there ar wheels.
R Impr oved driving stability when braking, espe-
cially on bends. F
F
unction of S
unction of S TEER C
TEER CONTR
ONTROL
OL ST
EER CONTROL assists youby transmitting a
noticeable steering forc eto the steering wheel in
th e direction requ ired forve hicle stabilisation.
This steering recommendation is given in thefo l-
lowing situations:
R both right wheels or bo thleT wheels are on a
we t or slippery road sur face when you brake
R theve hicle starts toskid
Syst
Syst em limits
em limits
ST EER CONTROL may be impaired or may not
function in thefo llowing situations:
R ESP ®
is deactivated. R
ESP ®
is malfunctioning.
R The steering is malfunctioning.
If ESP ®
is malfunctioning, you will be assisted fur-
th er by the electric po wer steering. HOLD function
HOLD function
HOLD function
HOLD function
The HOLD function holds
theve hicle at a stand-
still without requ iring youto depress the brake
pedal, e.g. while waiting in tra1c.
The HOLD function is only an aid. The responsibil-
ity forth eve hicle safely standing still remains with
th e driver.
Syst Syst em limits
em limits
The HOLD function is only intended toprov ide
assistance when driving and is not a su1cient
means of safeguarding theve hicle against rolling
awa y when stationa ry.
R The incline must not be greater than 30%. A
A
ctiv
ctiv ating/deactiv
ating/deactiv ating t
ating the HOLD function
he HOLD function &
W
WARNING
ARNING Risk of an accident due tothe
HOLD function being active when you
lea vetheve hicle
If th eve hicle is only braked with the HOLD
function it could, in thefo llowing situations,
ro llawa y:
R Ifth ere is a malfunction in the system or in
th e po wer suppl y.
R Ifth e HOLD function is deactivated by
depressing the accelerator pedal or brake
pedal, e.g. byave hicle occupant. #
Always secure theve hicle against rolling
awa y before you lea veit. R
R
eq
eq uir
uir ements:
ements:
R The vehicle is stationar y.
R The driver's door is closed or the seat belt on
th e driver's side is fastened.
R The vehicle has been star ted or has been
automatically switched o. bythe ECO start/
stop function. Driving and parking
235
235

R
The electric parking brake is released.
R Active Distance Assist DISTRONIC is deactiva-
te d.
R The transmission is in position h,kori.
A
A ctiv
ctiv ating t
ating t he HOLD function
he HOLD function #
Depress the brake pedal, and aTer a short
time quickly depress fur ther until theë
display appears in the Instrument Displa y.#
Release the brake pedal.
Deactiv Deactiv ating t ating the HOLD function
he HOLD function #
Depress the accelerator pedal topull away.
or #
Depress the brake pedal until theë display
disappears from the Instrument Displa y.
The HOLD function is deactivated in thefo llowing
situations:
R Active Distance Assist DISTRONIC is acti va-
te d.
R The transmission is shiTed toposition j.
R The vehicle is secured with the electric par k-
ing brake. In
thefo llowing situations, theve hicle is held by
transmission position jand/or bythe electric
parking brake:
R The seat belt is unfastened and the driver's
door is opened.
R The vehicle is switched o..
R There is a system malfunction.
R The po wer supply is insu1cient. F F
unction of Hill St
unction of Hill Star
art Assist
t Assist Hill
Start Assist holds theve hicle for a short time
when pulling away on a hill under thefo llowing
conditions:
R The transmission is in position hork.
R The electric parking brake is released.
This gives you enough time tomo veyour foot
from the brake pedal tothe accelerator pedal and
depress it before theve hicle begins torollawa y. &
W
WARNI NG
ARNI NGRisk of accident and injury due
to theve hicle rolling away
ATer a sho rttime, Hill Start Assist no lon ger
holds theve hicle. #
SwiTly mo veyour foot from the brake
pedal tothe accelerator pedal. Do not
lea vetheve hicle when it is being held by
Hill Start Assist. F
F
unction of A
unction of A dap
daptiv
tive Br
e Br ak
ake Lights
e Lights Ad
aptive Brake Lights warnfollowing tra1c in an
emer gency braking situation with thefo llowing
actions:
R By 0ashing the brake lamps
R By activating the hazard warning lights
If th eve hicle is braked sharply from speeds abo ve
50 km/h, the brake lamps 0ash rapidl y.This pro-
vides tra1c tr avelling behind you with an even
more noticeable warning.
If th eve hicle is tr avelling at speeds of more than
70 km/h at the beginning of the brake applica-
tion, the hazard warning lights switch on once the236
236
Driving and parking

ve
hicle is stationar y.When you pull away again,
th e hazard warning lights will switch o. automati-
cally at appr oximately 10 km/h. You can also
switch o. the hazard warning lights using the haz-
ard warning button. A
A
TTENTION ASSIST
TTENTION ASSIST F
F
unction of A
unction of A TTENTION ASSIST
TTENTION ASSIST
AT TENTION ASSIST assists you on long, mono to-
nous journe ys, e.g. on mo torw ays and trunk
ro ads. If ATTENTION ASSIST de tects indicators of
fa tigue or increasing lapses in concentration on
th e part of the driver, it suggests taking a break.
AT TENTION ASSIST is only an aid. It cannot
alw ays de tect fatigue or lapses in concentration in
time. The system is not a substitute for a well-res-
te d and attentive driver. On long journe ys,ta ke
re gular breaks in good time that allow for ade-
qu ate recuperation.
Yo u can choose between two settings:
R St
Standar
andar d:
d:normal system sensitivity.
R Sensitiv
Sensitiv e:
e:higher system sensitivity. The driver
is wa rned earlier and the attention le vel de tec- te
dby ATTENTION ASSIST is ada pted accord-
ingl y.
If dr owsiness or increasing lapses in concent ra-
tion are de tected, theATTENTION ASSIST: Take
a break! warning appears in the Instrument Dis-
pla y.Yo u can ackno wledge the message and take
a break where necessar y.Ifyo u do not take a
break and ATTENTION ASSIST continues todetect
increasing lapses in concentration, you will be
wa rned again aTer a minimum of 15 minutes. Yo
u can ha vethefo llowing status information for
AT TENTION ASSIST displa yed in the assistance
menu of the on-board computer:
R The length of the journey since the last break. R
The attention le vel de term ined byATTENTION
ASSIS T:
- the fuller the circle, the higher the atten-
tion le vel de term ined
- asyour attention wanes, the circle in the
cent reofthe display becomes smaller
If AT TENTION ASSIST is unable tocalculate the
attention le vel and cannot issue a warning, the
System suspended message appears.
If a warning is given in the Instrument Displa y,the
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 acti va-
te d and deactivated in the multimedia system.
If AT TENTION ASSIST is deactivated, theÛ
symbol appears in the assistance graphic in the
Instrument Displ ay. ATer theve hicle is star ted,
AT TENTION ASSIST is automatically activated. The
last selected sensitivity le velre mains stored.
Syst
Syst em limits
em limits
AT TENTION ASSIST is active in the 60 km/h to
200 km/h speed range. Driving and parking
237
237