light MERCEDES-BENZ GLS SUV 2019 Repair Manual

Shifting
the transfer case Shifting
totheLOW RANGE off-road gear Re
quirements:
R you are not driving on a pa ved or public road.
R theve hicle is stationar y.
R the transmission is in position i. #
Pull theLOW RANGE 1rock er switch.
Indicator lamp 2flashes. The shift request
st ay s active for a maximum 30 seconds. If all
re qu irements for shift operation are not fulfil‐
led within this time, the indicator lamp 2
switches off again and the shift operation
must be star ted again. #
Shift the transmission toposition i.
If shift operation is successful, the message
LOW RANGE on appears inthe instrument
clus ter,an audible signal sounds and indica‐
to r lamp 2and an indica tor lamp in the
instrument clus ter light up continuously. #
Shift the transmission toposition h.
% The vehicle stay s in LOW RANGE if you park
th eve hicle in LOW RANGE, even af terthe
engine has been restar ted.
% You will not be able toswitch on LOW
RANGE if drive prog ram C orB is
switched on. The vehicle switches todrive
program A. In
the on-road position, shift toHIGH RANGE
Re quirements:
R the engine is running and you are not driving
fast erthan 50 km/h.
R the transmission is in position i. #
Pull theLOW RANGE 1rock er switch.
The shift requeststay s active for a maximum
30 seconds. If all requ irements for shift oper‐
ation ha venot been ful filled within this time,
shift operation must be star ted again. #
Shift the transmission toposition i.
If shift operation is successful, the message
LOW RANGE off appears inthe instrument
clus ter,an audible signal sounds and the
indicator lamps go out. #
Shift the transmission toposition h. Fu
nction of the 4MATIC
4MATIC ensures that all four wheels are driven
when needed. Toget her with ESP ®
and 4ETS,
4MATIC impr ovesth e traction of your vehicle Driving and parking
211

#
Close the fuel filler flap. #
Swit chon the ignition for at least 60 sec‐
onds.
% Ifth eve hicle could not be star ted as the
Ad Blue ®
tan kwa s em pty, it can take up to
60 seconds forth ere fill to be de tected. #
Start theve hicle.
% Avoid storing AdBlue ®
re fill con tainers per‐
manently in theve hicle. Pa
rking Pa
rking theve hicle &
WARNING Risk of accident and inju ry
caused byan insuf ficiently secu redve hi‐
cle rolling away.
If th eve hicle is not securely par ked suf fi‐
ciently, it can rollaw ay in an uncont rolled
wa yev en at a slight downhill gradient. #
Ensure that the par kedve hicle is alw ays
properly secured against rolling away as
fo llo ws: R
on uphill or downhill gradients, turn
th e front wheels so that theve hicle
ro lls towa rdsth eke rb if it starts
moving.
R apply the parking brake.
R switch the transmission toposition
j. &
WARNING Risk offire caused byhot
ex haust sy stem parts
Flammable material such as lea ves, grass or
twigs may ignite if they come into contact
wi th hot parts of theex haust sy stem or
ex haust gasflow. #
Park theve hicle so that no flammable
material can come into con tact wi thhot
ve hicle components. #
In particular, do not park on dry grass‐
land or har vested grain fields. &
WARNING Risk of accident and inju ry
due tochildren left unat tended in the
ve hicle
If ch ildren are left unat tended in theve hicle,
th ey could:
R Open doo rs,th ereby endangering other
persons or road users.
R Get out and be stru ck byoncoming traf‐
fi c.
R Ope rate ve hicle equipment and become
trapped, forex ample.
In addition, thech ildren could also set the
ve hicle in motion, forex ample by:
R Releasing the parking brake.
R Changing the transmission position.
R Starting theve hicle. #
Never lea vechildren unat tended in the
ve hicle. #
When leaving theve hicle, alw aysta ke
th eke y with you and lock theve hicle. 218
Driving and pa rking

#
Point remo tecontrol 5from a di stance of
1 cm to8 cm towa rds buttons 1,2or3. #
Press and hold button 6ofremo tecontrol
5 until one of thefo llowing signals appears:
R Indicator lamp 4lights up green contin‐
uousl y.Programming is comple te.
R Indicator lamp 4flashes green. Pro‐
gramming was successful. Additionall y,
synchronisation of thero lling code with
th e door sy stem must also be car ried out. #
If indicator lamp 4does not light up or flash
green: repeat the procedure. #
Release all of the buttons.
% The remo tecontrol forth e door drive is not
included in the scope of delivery of the
ga rage door opener.
Synchronising thero lling code
Re quirements:
R The door sy stem uses a rolling code.
R The vehicle must be within range of the
ga rage door or door drive. R
The vehicle as well as persons and objects,
are located outside thera nge of mo vement
of the door. #
Press the programming button on the door
drive unit.
Initiate the next step within appr oximately
30 seconds. #
Press pr eviously prog rammed button 1,2
or 3 repeatedly until the door closes.
When the door closes, programming is com‐
ple ted.
% Please also read the operating instructions
fo rth e door drive.
Tr oubleshooting when prog ramming the
re mo tecont rol #
Check if the transmit ter frequency of remo te
control 5is suppo rted. #
Replace the batteries in remo tecontrol 5. #
Hold remo tecontrol 5atvarious angles at
a dis tance between 1 cm to8 cm in front of Driving and parking
221

th
e inside rearview mir ror.Yo u should test
eve ryposition for at least 25 seconds before
trying ano ther position. #
Hold remo tecontrol 5atthe same angles
at various dis tances in front of the inside rear
view mir ror.Yo u should test eve ryposition
fo r at least 25 seconds before trying ano ther
position. #
Notethat some remo tecontrols transmit
only for a limi ted period, press button 6on
re mo tecontrol 5again before transmission
ends. #
Align the aerial line of the door opener unit
with there mo tecontrol.
% Support and additional information on pro‐
gramming:
R Onthe HomeLink ®
Hotline on (0) 08000
466 354 65 or +49 (0) 6838 907-2 77.
R Onthe Internet at http://
www.homelin k.com. Opening/closing a
garage door
Requ irements:
R The cor responding button is programmed to
operate the door. #
Press and hold buttons 1,2or3 until
th e door opens or closes. #
If indicator lamp 4flashes yellow af ter
appr oximately 20 seconds: press and hold th
e pr eviously pressed button again until the
door opens or closes.
Clearing thega rage door opener memo ry #
Press and hold buttons 1and 3.
Indicator lamp 4lights up yello w. #
If indicator lamp 4flashes green: release
buttons 1and 3.
The entire memo ryhas been dele ted. 222
Driving and parking

%
Standby mode is automatically deactivated
when the ignition is switched on.
Ac tivating/deactivating standby mode (park‐
ing up theve hicle)
Re quirements:
R The engine is switched off.
Multimedia sy stem:
4 © 5
Settings 5
Fahrzeug (Vehicle) #
Switch Standby mode on or off.
When you activate the function, a prom pt
appears. #
Select Yes.
St andby mode is activated. Driving and driving saf
ety sy stems Driving sy
stems and your responsibility Yo
ur vehicle is equipped with driving sy stems
which assist you in driving, parking and manoeu‐
vring theve hicle. The driving sy stems are aids
and do not relie ve you of your responsibility per‐
ta ining toroad traf fic la w.Pay attention tothe traf
fic conditions at all times and inter vene
when necessa ry. Be aware of the limitations
re ga rding the safe use of these sy stems. Information about
radar senso rs Some driving and driving sa
fety sy stems use
ra dar sensors tomonitor the area in front of,
behind or next totheve hicle (depending on the
ve hicle's equipment).
Depending on theve hicle's equipment, thera dar
sensors are integrated behind the bumpers
and/or behind the Mercedes star. Keep these
parts free of dirt, ice and slush (/ page545).
The se nsors mu stnot be co vered, forex ample
by cycle rack s, overhanging loads, sticke rs,fo il
or foils toprotect against stone chipping. In the
eve nt of dama getothe bumpers or radiator
grille, or following a collision impacting the
bumpers or radiator grille, ha vethe function of
th era dar sensors checked at a qualified special‐
ist workshop. The driving sy stems and driving
saf ety sy stems may no longer function proper ly
in such cases. Overview of driving sy
stems and driving
saf ety sy stems In
this section, you will find information about
th efo llowing driving sy stems and driving saf ety
sy stems:
R 360° Camera (/ page 289)
R ABS (Anti-lock Braking System)
(/ page 229)
R Active Dis tance Assi stDISTRONIC
(/ page 247)
R Adaptive Brake Lights (/ page241)
R AIRMATIC (/ page 262)
R Active Brake Assi st (/ page 235)
R Active Lane Keeping Assist (/ page 309)
R ATTENTION ASSIST (/ page 300)
R BAS (Brak eAssist System) (/ page 229)
R Hill Start Assist (/ page 259)
R E-AC TIVE BODY CONTROL (/ page 269)
R EBD ( Electronic Brakeforc eDistribution)
(/ page 235) 228
Driving and parking

R
ESP ®
(E lectronic Stability Program)
(/ page 230)
R Speed Limit Assist (/ page 301)
R Active Speed Limit Assi st (/ page 251)
R HOLD function (/ page 260)
R STEER CONTROL (/ page 235)
R Active Steering Assist (/ page 253)
R Limiter (/ page242)
R Active Parking Assist (/ page 293)
R Parking Assist PARKTRONIC ( /page 279)
R Reversing camera (/ page 286)
R Cruise control (/ page241)
R Function of Blind Spot Assi stand Active Blind
Spot Assi stwith exitwa rning (/ page 306)
R Traf fic Sign Assi st (/ page 303) Fu
nction of ABS (Anti-lock Braking Sy stem) ABS
regulates the brake pressure in critical driv‐
ing situations:
R During braking, e.g. at full brake application
or insuf ficient tyre traction, the wheels are
pr eve nted from lo cking.
R Vehicle steerability while braking is ensured.
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
conditions and can ser veas a reminder totake
ex tra care while driving.
Sy stem limitations
R ABS is active from speeds of appr ox.
8 km/h.
R ABS may be impai red or may not function if a
malfunction has occur red and theye l‐
low ! ABSwarning lamp lights up contin‐
uously in the instrument clus ter af terthe
engine is star ted. Fu
nctions of Off-road ABS Off-road ABS is specially adap
tedfo r driving off-
ro ad:
R The front wheels lock cyclically during brak‐
ing.
R The braking dis tance is sho rtened due tothe
digging-in ef fect.
Sy stem limits
R Off- road ABS functions at speeds below
40 km/h.
R If Off- road ABS inter venes, the ability tosteer
may be restricted. Fu
nction of BAS (Brake Assist Sy stem) &
WARNING Risk of an accident caused by
a malfunction in BAS (Brake Assi stSys‐
te m)
If BA S is malfunctioning, the braking dis tance
in an eme rgency braking situation is
increased. Driving and parking
229

#
Dep ress the brake pedal with full force
in emer gency braking situations. ABS
pr eve nts the wheels from locking. BA
S suppo rts yo ur eme rgency braking situation
with additional brake forc e.
If yo u depress the brake pedal quickl y,BA S is
acti vated:
R BAS au tomatical lyboosts the brake pres‐
sure.
R BAS can sho rten the braking dis tance.
R ABS pr events the wheels from locking.
The brakes will function as usual once you
re lease the brake pedal. BAS is deactivated. Fu
nctions of ESP ®
(Electronic Stability Pro‐
gr am) &
WARNING Risk of skidding if ESP ®
is
malfunctioning
If ESP ®
is malfunctioning, ESP ®
cannot car ry
out vehicle stabilisation. In addition, other
driving saf ety sy stems are switched off. #
Drive on carefull y. #
Have ESP ®
ch ecked at a qualified spe‐
cialist workshop. &
WARNING Risk of skidding if ESP ®
is
deactivated
If yo u deactivate ESP ®
, ESP ®
cannot car ry
out vehicle stabilisation. #
ESP ®
should on lybe deactivated in the
fo llowing situations. ESP
®
can monitor and impr ovedriving stability
and traction in thefo llowing situations, within
ph ysical limits:
R When pulling away on wet or slippe rycar ria‐
ge wa ys.
R When braking.
R Vehicles with trailer hitch: in trailer opera‐
tion from speeds of 65 km/h, if theve hicle/
trailer combination begins tosw ay from side
to side.
R Instro ng side winds when you are driving
fa ster than 80 km/h.
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 to
th e situation.
ESP ®
is deactivated if theå ESP®
OFF warn‐
ing lamp lights up continuously in the instrument
clus ter:
R Driving stability will no lon ger be impr oved. 230
Driving and parking

R
Vehicles with trailer hitch: stabilisation of
th eve hicle/trailer combination is no longer
active.
R Crosswind Assist is no longer active.
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 flashes in the
instrument clus ter,one or se veralve hicle wheels
has reached its grip limit:
R Adapt your driving style to suit the cur rent
ro ad and weather conditions.
R Do not deactivate ESP ®
.
R Onlydepress the accelera tor pedal as far as
is necessary when pulling away. Deactivate ESP
®
in thefo llowing situations to
impr ove traction:
R When using snow chains.
R In deep sn ow.
R On sand or gr avel.
% 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.
Obse rveth efo llowing information:
R Warning and indicator lamps (/ page 665)
R Display messages (/ page611)
ETS/4ETS (Elect ronic Traction Sy stem)
ETS/4E TStraction control is pa rtof ESP ®
and
makes it possible topull away and accelerate on
a slippe rycar riag ew ay. If
yo u select theF orG drive prog ram, a
special ETS sy stem specifically suited tooff-road
te rrain is automatically activated.
ETS/4E TScan 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 transferred tothe wheel
or wheels with traction.
Influence of drive prog rams on ESP ®
The drive prog rams enable ESP ®
to adapt todif‐
fe re nt we ather and road conditions as well as
th e driver's prefer red driving style. You can
select the drive prog rams using theDY NA MIC
SELECT switch (/ page 204). Driving and parking
231

Ac
tivating or deactivating ESP ®
(Electronic
St ability Prog ram) (vehicles without Off-road
pac kage) Multimedia sy
stem:
4 © 5
Settings 5
Quick access
% ESP®
can only be activated/deactivated
using quick access when at least one other
function is available in quick access. ESP ®
can otherwise be found in theAssistance
menu. #
Select ESP.
A prom ptappears. #
Select Onorå Off.
ESP ®
is deactivated if theå ESP®
OFF warn‐
ing lamp lights up continuously in the instrument
clus ter.
Obser vethe information on warning lamps and
display messages which may be shown in the
instrument clus ter. Ac
tivating/deactivating ESP ®
(Electronic Sta‐
bility Prog ram) (vehicles with Off-road pack‐
age or E- Active Body Control) #
Pull rock er switch 1.
ESP ®
is deactivated if theå ESP®
OFF warn‐
ing lamp lights up continuously in the instrument
clus ter. Obser
vethe information on warning lamps and
display messages which may be shown in the
instrument clus ter. Fu
nction of ESP ®
Crosswind Assist ESP
®
Crosswind Assist de tects sudden gu sts of
side wind and helps the driver tokeep theve hi‐
cle in the lane:
R ESP ®
Crosswind Assist is active at vehicle
speeds between 80 km/h and 200 km/h
when driving stra ight ahead or cornering
slight ly.
R The vehicle is stabilised bymeans of individ‐
ual brake application on one side. Fu
nction of ESP ®
trailer stabilisation &
WARNING 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 234
Driving and parking

a high centre of gr
avity may tip over before
ESP ®
de tects this. #
Alw ays adapt your driving style to suit
th e cur rent road and weather condi‐
tions. 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 Intheeve nt of se vere swerving, the engine
output is also reduced and all wheels are
braked.
ESP ®
trailer stabilisation may be impaired or
may not function if:
R The trailer is not connec ted cor rectly or is
not de tected prope rly by theve hicle. Fu
nction of EBD (Electronic Brake forc e Dis‐
tribution) EBD is
characterised bythefo llowing:
R Monitoring and regulating the brake pressure
on there ar wheels.
R Impr oved driving stability when braking,
especially on bends. Fu
nction of STEER CONT ROL ST
EER CONT ROL helps youby transmitting a
noticeable steering forc eto thesteering wheel in
th e direction requiredforve hicle stabilisation.
This steering recommendation is given pa rticu‐
lar lyin thefo llowing situations:
R both right wheels or bo thleft wheels are on a
we t or slippe ryroad sur face when you brake
R theve hicle starts toskid
Sy stem limitations
ST EER CONTROL may be impaire d or may not
function in thefo llowing situations:
R ESP ®
is deactivated R
ESP ®
is malfunctioning
R thesteering is malfunctioning
If ESP ®
is malfunctioning, you will be assis ted
fur ther by the electric po werst eering. Fu
nction of Active Brake Assi st Ac
tive Brake Assi stconsi sts of thefo llowing
functions:
R Distance warning function
R Autonomous braking function
R Situation-dependent braking assi stance
R Vehicles with Driving Assistance Pack‐
age: Evasi veSteering Assist and cornering
function
Ac tive Brake Assi stcan help youto minimise the
ri sk of a collision with vehicles, cyclists or
pedestrians, or reduce the ef fects of su cha colli‐
sion.
If Ac tive Brake Assi sthas de tected a risk of colli‐
sion, a warning tone sounds and theL dis‐ Driving and parking
235