engine MERCEDES-BENZ GLS SUV 2021 Manual PDF

If
yo u ha veacciden tally refuelled wi th the
wrong fuel: #
do not switch on the ignition. #
consult a quali/ed specialist workshop. The
following compatibility indications for fuel
apply toyour vehicle: 1
For petrol with maximum 5% ethanol byvol-
ume
2 For petrol with maximum 10% ethanol byvol-
ume Ac
cording toEuropean standard EN 16942 you
can /nd the compatibility indications at thefo l-
lowing locations:
R onthe inst ruction label on the fuel /ller 0ap
R onthe fuel pump or pump nozzle suitable for
yo ur vehicle throughout Europe
If th eav ailable fuel is not su1ciently low in sul-
phur, this can produce unpleasant odours.
The recommended octane number foryo ur vehi-
cle can also be found on the inst ruction label in
th e fuel /ller 0ap (/ page 216).
As a temp orary measure, if there commended fuel
is not available, you may also use regular unlea-
ded petrol with at least 91 RON.This may reduce
engine output and increase fuel consumption.
Ne verre fuel using petrol wi than even lo werRO N.
Fu rther information on fuel can be obtained at a
/lling station or a quali/ed specialist workshop.
Inf
Inf or ormation on additiv
mation on additiv es in pe
es in petr
trol (v
ol (v ehicles with
ehicles with
pe
pe tr
trol engine)
ol engine)
No tethe inst ructions about operating 0uids
(/ page 425). *
N
NO OTE
TE Damage from use of unsui table
additives Even small amounts of
the wrong additive may
lead tomalfunctions occur ring. #
Only add cleaning additives recommen-
ded byMercedes-Benz tothe fuel. Mercedes-Benz
recommends that you use brand-
name fuels with additives.
In some countries, the fuel available may not ha ve
su1cient additives. Deposits could build up in the
fuel injection system as a result. In this case, in
consultation with a Mercedes-Benz service
centre, mix the fuel with the cleaning additive rec-
ommended byMercedes-Benz. Obser vethe no tes
and mixing ratios indica ted on theta nk.
Inf
Inf or ormation on fuel q
mation on fuel q uality f
uality for v
or vehicles wit
ehicles wit h a die-
h a die-
sel engine
sel engine
Gener Gener al not
al notes
es
No tethe inst ructions about operating 0uids
(/ page 425). Te
ch nical data
427
427

&
W
WARNI NG
ARNI NGRisk of /re from fuel mixture
If yo u mix diesel fuel with petrol, the 0ash
point of the fuel mixture is lo werth an that of
pure diesel fuel. #
Neverre fuel using petrol in diesel
engines. #
Never mix petrol with diesel fuel. *
N
NOOTE
TE Damage caused bythe wrong fuel Even small amounts of
the wrong fuel could
re sult in damage tothe fuel system, the
engine and the emission control system.
V
V ehicles wit
ehicles wit h a diesel par
h a diesel par ticulat
ticulat e
e/lt
/lt er:
er: #
Only refuel using sulphur-free diesel fuel
th at conforms toEuropean standard
EN 590, or an equivalent speci/cation.
In count ries without sulphur-free diesel
fuel, refuel using only lo w-sulphur diesel
fuel with a sulphur content less than
50 ppm.
V
V ehicle wit
ehicle wit hout diesel par
hout diesel par ticulat
ticulate
e/lt
/lt er:
er: #
Only refuel using diesel fuel wi tha sul-
phur content less than 500 ppm.
Ne verre fuel wi thone of thefo llowing fuels:
R Petrol
R Marine diesel
R Heating oil
R Pure fatty acid me thyl ester or veget able
oil
R Para1n or kerosene
If yo u ha veacciden tally refuelled wi th the
wrong fuel: #
Do not switch on theve hicle. #
Consult a quali/ed specialist workshop. The
following compatibility indication for fuel
applies toyour vehicle: 1
For diesel fuel with a maximum of 7% byvol-
ume bio-diesel (fatty acid me thyl ester)
Ac cording toEuropean standard EN 16942 you
can /nd the compatibility indications at thefo l-
lowing locations:
R Ontheve hicle on the information label in the
fuel /ller 0ap (/ page 216)
R Onthe fuel dispenser or pump nozzle suitable
fo ryo ur vehicle thro ughout Europe
Inf Inf or
ormation on lo
mation on lo w outside t
w outside tem
emper
per atur
atur es
es
Re fuel your vehicle with as much winter diesel fuel
as possible at the beginning of winter. 428
428
Te
ch nical data

Before
changing over towinter diesel fuel, the fuel
ta nk should be em pty, if possible. When /rst refu-
elling wi thwinter diesel fuel, keep the fuel le vel
lo w, e.g. toreser veleve l. The fuel tank can be /l-
led as usual when next refuelling.
Fu rther information on fuel can be obtained at a
/lling station or a quali/ed specialist workshop.
T
T ank cont
ank cont ent and fuel r
ent and fuel r eserve
eser ve
F
F uel t
uel t anktot
ank total capacity
al capacity Model
Model
All model
s9 0.0 litresF F
uel t
uel t anktot
ank total capacity (Mer
al capacity (Mer cedes-Ma
cedes-Maybac
ybach)
h) Model
Model
Mercedes-Maybach
GLS 480
90.0 lit
res
Mercedes-Maybach
GLS 600 4MATIC 90.0 litres R R
ese rv
eserv e fuel t
e fuel t ank
ank Model
Model
All models
9.0 litres F F
uel t
uel t ank r
ank r eserv
eserv e (Mer
e (Mer cedes-Ma
cedes-Ma ybac
ybach)
h) Model Model
Mercedes-Maybach
GLS 480
9.0 litres
Mercedes-Maybach
GLS 600 4MATIC 12.0 litres A A
dBlue
dBlue ®
®
(v
(vehicles wit
ehicles wit h a diesel engine onl
h a diesel engine onl y)
y) N
No
ot
tes on A
es on A dBlue
dBlue®
®
Obser vethe no tes on operating 0uids
(/ page 425).
Ad Blue ®
is a water-soluble 0uid forth e NOx
ex haust gas aTertreatment of diesel engines.
It may be improper or punishable in some coun-
tries tooperate a vehicle that uses no AdBlue ®
or
one that does not comply with the speci/cations
of these operator's manual. *
N
NO OTE TE Malfunctions due tothe dilution of
Ad Blue ®
or the use of additive-enhanced
Ad Blue ® The function of
the NOx exhaust gas aTer-
treatment can be impaired bythe use of
unsuitable denoxi/cation agents. #
Only use AdBlue ®
in acco rdance with
ISO 22241. #
Do not dilu teAd Blue ®
wi th wa ter. #
Do not use additive-enhanced AdBlue ®
. *
N
NOOTE
TE Dama geand malfunctions due to
impurities in AdBlue ® Consequences of impurities in
AdBlue ®
:
R increased emission values
R damage tothe catalytic con verter
R NOx exhaust gas aTertreatment malfunc-
tions #
Avoid impurities in AdBlue ®
. Te
ch nical data
429
429

Ad
Blue ®
residues cr ystallise aTer a period of
time, and contaminate the sur faces with which
th ey come into contact. Clean the dirty sur faces
with water as soon as possible.
When you open theAd Blue ®
tank, small amounts
of ammonia vapour may escape. Do not inhale
any ammonia vapours that may be released. Only
/ll theAd Blue ®
tank in well-ventilated areas.
A A dBlue dBlue ®
®
capacity
capacity
Tot
Tot al capacity of A
al capacity of A dBlue
dBlue®
®
t
tank
ank Model
Tot
Mode lT otal capacity
al capacity
All model s3 1.6 litresA A
dBlue dBlue ®
®
consump
consump tion
tion
The average AdBlue ®
consu mption is between 1%
and 5% of fuel consum ption. Like fuel consump-
tion, AdBlue ®
consu mption is high lydependent
upon driving style and operating conditions. For
th is reason, your vehicle's actual consu mption /g-
ures under da y-to -day operating conditions may
di.er from the consum ption /gures calculate d.
The frequency at which you will ha veto to p up Ad
Blue ®
will also vary. Ha vetheAd Blue ®
supply
ch ecked at a quali/ed specialist workshop before
making jou rney s outside of Europe. Before a lon-
ge r st ayoutside of Europe, consult a quali/ed
specialist workshop.
A
A dBlue
dBlue ®
®
r
rang
ang e and
e and /ll
/lllev
level
el
Yo u can ha vetheAd Blue ®
range and le vel dis-
pla yed in the driver's displa y.
% The AdBlue ®
range sh own depends strongly
on the driving style and operating conditions.
The actual range can therefore deviate from
th era nge cur rently displa yed in the driver's
displa y.
The information supplied in the operator's manual
re ga rding there ser vequantity at the /r stwa rning
in the driver's display and on the minimum top-up
qu antity when theAd Blue ®
tank is em pty is also
to be understood as guide values. Engine oil
Engine oil
N
No
ot
tes on engine oil
es on engine oil
Obser vethe no tes on operating 0uids
(/ page 425). *
N
NOOTE
TE Engine damage caused byan inco r-
re ct oil /lter, incor rect oil or additi ves #
Do not use engine oils or oil /lters other
th an those which meet the speci/cations
necessary forth e prescribed service
inter vals. #
Do not alter the engine oil or oil /lter in
order toachie velonger change inter vals
th an prescribed. #
Do not use additives. #
Have the engine oil changed aTer the
prescribed inter vals. 430
430
Te
ch nical data

Mercedes-Benz
recommends having the oil
ch anged at a quali/ed specialist workshop.
Only use engine oils appr ovedfo ryo ur vehicle by
Mercedes-Benz.
P
P e etr
tr ol engines:
ol engines: for cer tain countries, di.erent
engine oils can be used in conjunction with
re duced maintenance inter vals. Further informa-
tion on di.erent engine oils can be obtained at a
qu ali/ed specialist workshop.
Quality and capacity of engine oil
Quality and capacity of engine oil
Missing values werenot available at the time of
going topress.
Engine oil
Engine oil speci/cations
speci/cations (pe
(petr
trol engines)
ol engines) Model
Model
MB-Fr
MB-Freig
eigabe or MB-
abe or MB-
Approv
Approv al
al
GLS 450 4MATIC 229.51, 229.52, 229.61, 229.71
229.72*
GLS 580 4MATIC 229.52
229.61* Engine oil
Engine oil
speci/cations
speci/cations (Mer
(Mercedes‑Macedes‑Ma ybac
ybach)
h) Mer
Mer
cedes‑Ma
cedes‑Ma ybach
ybach MB-Fr
MB-Freig
eigabe or MB-
abe or MB-
Approv
Approv al
al
Mercedes-Maybach
GLS 480
Mercedes-Maybach
GLS 600 4MATIC 229.5 Engine oil Engine oil
speci/cations speci/cations (diesel engines)
(diesel engines) Model Model
MB-Fr MB-Freig
eigabe or MB-
abe or MB-
Approv
Approv al
al
All models 229.52
229.61* *
re commended for lo west possible fuel con-
su mp tion (lo westSA E viscosity class in each
case; obser vepossible restrictions of the
appr ovedSA E viscosity classes)
To achie vethe lo west possible fuel consum ption,
it is recommended touse the engine oil speci/ca-
tions mar ked in theta ble forth e lo westSA E vis- cosity class.
Possible restrictions of the appr oved
SA E viscosity classes must be obser ved.
% Ifth e engine oils listed in theta ble are not
av ailable, you may add a maximum of 1.0 litre
of thefo llowing engine oils once onl y.
Engine oils for one-time /lling only in exceptional
cases:
R P Pe
etr
tr ol engines:
ol engines:
- GL
GLS 450 4MA
S 450 4MA TIC:
TIC:MB-F reigabe or MB-
Appro val 229.31 or ACEA C3
- GL
GLS 580 4MA
S 580 4MA TIC:
TIC:MB-F reigabe or MB-
Appro val 229.51 or ACEA C3
- Mer
Mer cedes-Ma
cedes-Ma ybac
ybach GL
h GLS 600 4MA
S 600 4MA TIC:
TIC:MB-
Fr eigabe or MB-Appr oval 229.3 or
AC EA A3/B4
- Mer
Mer cedes-Ma
cedes-Ma ybac
ybach GL
h GL S 480:
S 480: MB-Freigabe
or MB-Appr oval we renot available at the
time of going topress.
R Diesel engines:
Diesel engines: MB-Freigabe or MB-Appr oval
229.51 or ACEA C3
The following values referto an oil change, includ-
ing the oil /lter. Te
ch nical data
431
431

Engine oil
Engine oil
/lling
/llingcapacity
capacity Model
Model
Capacity
Capacity
GLS 580 4MATIC 9.5 litres
All other model s8 .5 litresEngine oil capacity (Mer
Engine oil capacity (Mercedes-Ma
cedes-Maybac
ybach)
h) Model
Model
Capacity
Capacity
Mercedes-Maybach
GLS 480
Mercedes-M aybach
GLS 600 4MATIC 9.5 litresN No
ot
t es on br
es on br ak
ake
e0uid
0uid No
tethe inst ructions about operating 0uids
(/ page 425). &
W
WARNING
ARNING Risk of an accident due to
va pour poc kets form ing in the brake sys-
tem
The brake 0uid constantly absorbs moisture
from the air. This lo wersthe boiling point of
th e brake 0uid. If the boiling point is too lo w,
va pour poc kets may form inthe brake system
when the brakes are applied hard.
This impairs the braking e.ect. #
Have the brake 0uid rene we d at the
speci/ed inter vals. Ha
ve the brake 0uid regula rly re placed at a quali-
/ed specialist workshop.
Only use a brake 0uid appr ovedby Mercedes-
Benz according toMB-F reigabe or MB-Appr oval
331.0. Coolant Coolant
N
No
ot
tes on coolant
es on coolant
Obser vethe no tes on operating 0uids
(/ page 425). &
W
WARNING
ARNING Risk of /re‑ and injury from
antif reeze
If antifreeze comes into contact with hot com-
ponent parts in the engine compartment, it
may ignite. #
Allow the engine tocool down before
yo uto p up the antifreeze. #
Make sure that no antif reeze spills out
next tothe /ller opening. #
Thoroughly clean the antifreeze from
component parts before starting the
ve hicle. *
N
NOOTE
TE Damage caused byincor rect cool-
ant #
Only use coolant that has been premixed
with there qu ired antifreeze pr otection.
Information on coolant is available at thefo l-
lowing locations:
R Inthe Mercedes-Benz Speci/cation for
Operating Fluids 320.1 432 432
Te
ch nical data

-
Athttps://be vo.mercedes-benz.com
- Inthe Mercedes-Benz BeVo App
R Ataqu ali/ed specialist workshop *
N
NO OTE
TE Overheating at high outside tempe r-
atures If an inappropriate coolant is used,
the engine
cooling system is not su1ciently pr otected
against overheating and cor rosion at high out-
side temp eratures. #
Only use coolant appr ovedby Mercedes-
Benz. #
Obser vethe inst ructions in the
Mercedes-Benz Speci/cations for Oper-
ating Fluids 320.1. Ha
ve the coolant regula rly re placed at a quali/ed
specialist workshop.
Proportion of antif reeze concentrate in the engine
cooling system:
R A minimum of 50% (antifreeze pr otection down
to about -37°C) R
A maximum of 55% (antif reeze pr otection
down to-45°C) N
No
ot
tes on windscr
es on windscr een w
een washer
asher 0uid
0uid Obser
vethe no tes on operating 0uids
(/ page 425). &
W
W ARNING
ARNING ‑ Risk of /re and injury due to
windscreen washer concent rate
Wi ndsc reen washer concent rate is highly 0am-
mable. It could ignite if it comes into contact
with hot engine component parts or the
ex haust system. #
Make sure that no windscreen washer
concent rate spills out next tothe /ller
opening. *
N NOOTE
TE Damage totheex terior lighting due
to unsuitable windscreen washer 0uid Unsuitable windscreen
washer 0uids may
damage the plastic sur face of theex terior
lighting. #
Only use windscreen washer 0uids which
are also suitable for use on plastic sur fa-
ces, e.g. MB SummerFit or MB WinterFit. *
N
NOOTE
TE Bloc ked spr aynozzles caused by
mixing windscreen washer 0uids #
Do not mix MB SummerFit and MB Win-
te rFit with other windscreen washer 0u-
ids. Do not use distilled or de-ionised
water. Other-
wise, the /ll le vel sensor may be triggered er rone-
ous ly.
Re commended windscreen washer 0uid:
R abo vefreezing point: e.g. MB SummerFit
R below freezing point: e.g. MB WinterFit
Fo rth e cor rect mixing ratio, referto the informa-
tion on the antifreeze container.
Mix washer 0uid with windscreen washer 0uid all
ye ar round. Te
ch nical data
433
433

O.-r
O.-r
oad
oaddr
driving
iving F F
or or ding dep th
ding dep th
* NO
NO TE
TEDama gedue towa ter when ford ing Wa
ter can enter the engine compartment and
ve hicle interior in thefo llowing cases:
R the maximum permissible ford ing dep th
when driving thro ugh standing water is
ex ceeded
R a bow wave form s during ford ing
R water accumulate s duringford ing of 0o w-
ing water #
Do not exceed the maximum permissible
fo rd ing dep thand drive slo wlythro ugh
th ewa ter. The speci/ed
value indicates the maximum per-
missible ford ing dep thfor:
R vehicles that are ready todrive – fuel tank full,
all 0uids topped up, with driver
R slow driving thro ugh standing water Driving
thro ugh 0owing waterre duces the permis-
sible ford ing dep thdue tothe accumulation of
wa ter.
Obser vethe no tes on o.-road driving and ford ing
(/ page 198). Missing
values werenot available at the time of
going topress.
F
F or
or ding dep th
ding dep th Model
Model
1
1F
For
or ding dep th
ding dep th
V
V ehicles wit
ehicles wit h AIRMA
h AIRMATIC
TIC
Ra ised le vel5 0 cm Model
Model
1
1F
For
or ding dep th
ding dep th
V
V ehicles wit
ehicles wit h
hO.-r
O.-r oad
oad
pack
pack ag
age
e
O.- road le vel15 0 cm
O.- road le vel25 0 cm
O.- road le vel36 0 cm F F
or or ding dept
ding dept h (Mer
h (Mercedes‑Ma
cedes‑Ma ybac
ybach)
h) Mer Mer
cedes-Ma cedes-Ma ybac
ybach GLS
h GLS
480
480 1
1
F
For
or ding dep th
ding dep th
Ra ised le vel F
F
or
or ding dept
ding dept h (Mer
h (Mercedes‑Ma
cedes‑Ma ybac
ybach)
h) Mer
Mer
cedes-Ma
cedes-Ma ybac
ybach GLS
h GLS
600 4MA
600 4MA TIC
TIC 1
1
F
For
or ding dep th
ding dep th
Ra ised le vel5 0 cm Angle of appr
Angle of appr
oac
oach/depar
h/depar ture
ture
The speci/ed values are maximum values forve hi-
cles that are ready todrive – fuel tank full, all 0u- 436
436
Te
ch nical data

*Depending on
the tyre size
Maximum gr
Maximum gradient climbing ability
adient climbing ability
The vehicle's gradient climbing ability depends on
th ewe ight distribution in theve hicle, thete rrain
conditions and thero ad sur face conditions.
The speci/ed value applies when:
R theve hicle is ready todrive – fuel tank full, all
0uids topped up, with driver
R the LLO
O W RAN
W RAN GE
GEo.-road gear of the transfer
case is engaged
R thero ad sur face conditions and thus the trac-
tion are good
A gradient climbing ability of 100% cor responds to
an incline of 45°.
Obser vethe no tes on driving in moun tainous ter-
ra in (/ page 198). Gr
Gr adient climbing ability
adient climbing ability Model
Model
Maximumgr
Maximum gradi-
adi-
ent climbing abil-
ent climbing abil- ity
ity
V
V ehicles wit
ehicles wit hout
houtO.-r
O.-road
oad
pack
pack ag
age
e 80%
V
V ehicles wit
ehicles wit h
hO.-r
O.-r oad
oad
pack
pack ag
age
e
When LOW RANGE o.- road
ge ar is engaged 100% Gr
Gr
adient climbing ability (Mer
adient climbing ability (Mer cedes‑Ma
cedes‑Maybac
ybach)
h) Model
Model
Maximumgr
Maximum gradi-
adi-
ent climbing abil-
ent climbing abil- ity
ity
Mercedes-Maybach GLS
480
Mercedes-Maybach GLS
600 4MATIC 80% T T
r
railer hitch
ailer hitch Gener
Gener
al not
al notes on t
es on t he tr
he trailer hitch
ailer hitch Modi/cations
tothe engine cooling system may
be necessar y,depending on theve hicle model.
The retro/tting of a trailer hitch is on lypermissi-
ble if a towing capacity is speci/ed in your vehicle
documents.
Fu rther information can be obtained at a quali/ed
specialist workshop. 438 438
Te
ch nical data

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
Á
Key not detected (red dis-
play message) *T
hekey cann otbe de tected and may no longer be in theve hicle.
The key is no lon ger in theve hicle and you switch o. theve hicle:
R You can no longer start theve hicle.
R You cannot centrally lock theve hicle. #
Ensu rethat theke y is in theve hicle.
If th eke y de tection function has a malfunction due toa st rong radio signal source: #
Stop theve hicle immediately in accordance with the tra1c conditions. #
Place theke y in the slot for starting the engine with theke y (/ page 192).
Á Key being initialised Please
wait *T
hevehicle is processing in order to teach in the new key. #
Wait until processing is comple te.
Place the key in the
marked space See Owner's
Manual *K
eydetection is malfunctioning. #
Change the location of theke y in theve hicle. #
Place theke y in the slot for starting the engine with theke y (/ page 192). Display messages and
warning/indicator lamps
447 447