2020 MERCEDES-BENZ GLS SUV tow

Note
s ontech nical data
* NO
TEMercedes-AMG vehicles #
Obser vethe no tes in the Supplement.
Yo u could otherwise failto recognise
dangers. The
tech nical da tawa s de term ined in accord‐
ance with EU Directives. The data stated on ly
applies tovehicles with standard equipment. Yo u
can obtain fur ther information from a Mercedes-
Benz Service Centre.
Only for ce rtain countries: you can find vehi‐
cle-specific vehicle data in the COC documents
(CERTIFIC ATE OF CONFORMITY). These pape rs
are included with theve hicle. On-board electronics
Note
s on tampering with the engine elec‐
tronics *
NO
TEPremature wearthro ugh improper
main tenance Improper maintenance may cause
vehicle
components towe ar more quickly and the
ve hicle's operating permit may be in valida‐
te d. #
Alw ays ha vewo rkon the engine elec‐
tronics and related components car ried
out at a qualified specialist workshop. Tw
o-w ayradios Note
s onfitting two-w ayradios &
WARNING Risk of accident due to
improper workon two-w ayradios
If two-w ayradios are manipulated or retrofit‐
te d incor rectl y,the electromagnetic radiation
from the two-w ayradios can inter fere with th
eve hicle electronics and jeopardise the
operating saf ety of theve hicle. #
You should ha veall workon electrical
and electronic components car ried out
at a qualified specialist workshop. &
WARNING Risk of accident from incor‐
re ct ope ration of two-w ayradios
If yo u use two- wayra dios in theve hicle
improperly, their electromagnetic radiation
can disrupt theve hicle's electronics. This is
true in thefo llowing situations, in particular:
R The two-w ayradio is not connec tedto an
ex terior aerial.
R The exterior aerial is fitted inco rrectly or
is not a lo w-reflection aerial.
This could jeopardise the operating saf ety of
th eve hicle. #
Have the lo w-reflection exterior aerial
fi tted at a qualified specialist workshop. Te
ch nical da ta413

Off-road driving
Fo
rding dep th
* NO
TEDama gedue towate r when ford‐
ing Wa
ter can enter the engine compartment
and vehicle 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 wavefo rm s during ford ing
R wate r accumulates during ford ing of flow‐
ing water #
Do not exceed the maximum permissi‐
ble ford ing dep thand drive slowly
th ro ugh thewa ter. The specified
value indicates the maximum per‐
missible ford ing dep thfor:
R vehicles that are ready todrive – fuel tank
full, all fluids topped up, with driver
R slow driving thro ugh standing water Driving
thro ugh flow ing waterre duces the per‐
missible ford ing dep thdue tothe accumulation
of wate r.
Obser vethe no tes on off-road driving and ford‐
ing (/ page194). Mo
del
1
1Fording
dep th
Ve hicles with AIRMATIC
Ra ised le vel5 0 cm
Ve hicles with Off-road
pac kage Model
1
1Fording
dep th
Off-road le vel15 0 cm
Off-road le vel25 0 cm
Off-road le vel36 0 cm Mercedes-Maybach
GLS 600 4MATIC
1 1
Fording
dep th
Ra ised le vel5 0 cm Angle of approach/departure
The speci
fied values are maximum values for
ve hicles that are ready todrive – fuel tank full,
all fluids topped up, with driver. The values
depend on theve hicle tyres and vehicle weight.
Obser vethe no tes on driving in mountainous ter‐
ra in (/ page194). 428
Tech nical da ta

R
theLOW RANGE off-road gear of the trans‐
fe r case is engaged
R thero ad sur face conditions and thus the
traction are good
A gradient climbing ability of 100% cor responds
to an incline of 45°.
Obse rveth e no tes on driving in mountainous ter‐
ra in (/ page194). Mo
del Maximumgra‐
dient climbing ability
Ve hicles without Off-
ro ad pac kage 80%
Ve hicles with Off-road
pac kage
When LOW RANGE off-
ro ad gear is engaged 10
0% Mercedes‑Maybac
hMaximumgra‐
dient climbing ability
All models 80% Tr
ailer hitch Gene
ral no tes on the trailer hit ch Modifications
tothe engine cooling sy stem may
be necessar y,depending on theve hicle model.
The retrofitting of a trailer hitch is only pe rmissi‐ ble if a
towing capacity is specified in your vehi‐
cle documents.
Fu rther information can be obtained at a quali‐
fi ed specialist workshop. 430
Tech nical da ta

Mounting dimensions
1
Fastening points
2 Overhang dimension
3 Rear axle centre line The
overhang dimension and fastening points
are valid for a trailer hitch ins talled at thefa c‐
to ry. Model
2 2Over‐
hang dimen‐ sion
All model s1 257 mm Mercedes‑Maybach
2 2Over‐
hang dimen‐ sion
Mercedes-Mayba chGLS 600
4MATIC 12
57 mm To
wing capacity Yo
u will find vehicle-specific weight information
in theve hicle documents.
The tongue weight is not included in theto wing
capacity. To
wing capacit y,braked (at a minimum start-
off gradeability of 12%) Model
Towing capacity
All models 3500kg Mercedes‑Maybac
hTowing capacity
Mercedes-Maybach
GLS 600 4MATIC 3500
kg To
wing capacit y,unbraked Model
Towing capacity
All models 750kg Mercedes‑Maybac
hTowing capacity
Mercedes-Maybach
GLS 600 4MATIC 75
0kg Te
ch nical da ta431

Display messages
Possible causes/consequences and M
MSolutions #
Apply and then release the electric parking brake manuall y.
If it is not possible toapply the electric parking brake or there d! indicator lamp continues toflash: #
Do not continue driving. Consult a qualified specialist workshop. #
Where necessar y,also secure the par kedve hicle against rolling away.
* The yellow ! indicator lamp is lit and there d! indicator lamp flashes for appro ximately ten seconds af ter
th e electric parking brake has been applied or released. It then remains lit or goes out. The electric parking brake is
malfunctioning.
If th ech arge leve l is too lo w: #
Char gethe12 V batter y.
To appl y: #
Switch the ignition off.
The electric parking brake will be applied automaticall y.
If yo u do not wantthe electric parking brake tobe applied, e.g. at an automatic car wash or when theve hicle is
being towe d, lea vethe ignition switched on. This does not include having theve hicle towe d with there ar axle
ra ised.
If th e electric parking brake is not applied automatically: #
Switch the ignition off and switch it back on. #
Release and then apply the electric parking brake manually (/ page 222). Display messages and
warning/indicator lamps 457

Display messages
Possible causes/consequences and M
MSolutions
Blind Spot Assist inopera-
tive *B
lind Spot Assist is malfunctioning. #
Consult a qualified specialist workshop.
Blind Spot Assist not availa-
ble when towing a trailer
See Owner's Manual *W
hen you es tablish the electrical connection tothe trailer, Blind Spot Assist will be una vailable. #
Press the left-hand Touch Control and ackn owledge the display message.
Active Blind Spot Assist
currently unavailable See
Owner's Manual *A
ctive Blind Spot Assi stistemp orarily una vailable.
The sy stem limits ha vebeen reached (/ page 257).
Once the cause of the problem is no longer present, the sy stem will be available again. #
Drive on.
or #
Ifth e display message does not disappear, stop theve hicle in accordance with the tra ffic conditions and restart
th e engine.
Active Blind Spot Assist
inoperative *A
ctive Blind Spot Assi stis malfunctioning. #
Consult a qualified specialist workshop.
Active Blind Spot Assist
not available when towing
a trailer See Owner's Man-
ual *W
hen you es tablish the electrical connection tothe trailer, Active Blind Spot Assi stwill be una vailable. #
Press the left-hand Touch Control and ackn owledge the display message. Display messages and
warning/indicator lamps 467

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
ï Tr ailer tow hit chwarning
lamp *T
hered trailer hitch warning lamp is lit.
The trailer hitch is not operational or is swivelling. &
WARNING Risk of an accident if the ball neck is not loc ked
The trailer may become de tach ed. #
Stop theve hicle immediately in accordance with the traf fic conditions. Do not continue driving. #
Uncouple the trailer and secure it against rolling away. #
Initiate a new swivel mo vement and do not re-couple the trailer until thewa rning/indicator lamp goes out. #
Notethe messages on the multifunction displa y.
If th e trailer hitch is swivelling: #
Wait until the ball neck has reached the operational position. 494
Display messages and warning/indicator lamps

Air-recirculation mode..............................
17 7
Air-water duct Keeping free.......................................... 364
Airbag Activation................................................ 40
Cushionbag............................................. 45
Fr ont airbag (driver, front passenger)...... 45
Ins tallation locations.............................. .45
Knee airbag............................................ .45
Overview................................................. 45
PA SSENGER AIR BAG indicator lamp....... 50
Pr otection................................................ 46
Re duced pr otection.................................47
Side airba g.............................................. 45
Wi ndow airba g......................................... 45
Ai rflow
Setting................................................... 174
AIRM ATIC
Setting.................................................. .265
Suspension........................................... 262
Alarm sy stem
see ATA (anti-theft alarm sy stem)
All-wheel drive see 4MATIC Ambient lighting
Setting (multimedia sy stem)..................1 64
Android Auto
see Smartphone integration
Animals Pets in theve hicle................................... 77
Anti-lock braking sy stem
see ABS (Anti-lock Braking Sy stem)
Anti-skid chains
see Snow chains
Anti-theft pr otection
Ad ditional door loc k................................ .81
Immobiliser........................................... 102
Anticipatory occupant pr otection
see PRE- SAFE®
(anticipatory occu‐
pant pr otection)
see PRE-SAFE ®
PLUS (anticipatory
occupant pr otection plus)
Apple CarPlay ®
see Smartphone integration
Assistance sy stems
see Driving saf ety sy stem ASS
YST PLUS
Battery disconnection pe riods.............. 358
Displaying the service due dat e............. 357
Fu nction/no tes..................................... 357
Re gular maintenance work.................... 357
Special service requ irements................ 357
ATA (anti-theft ala rmsystem)
Deactivating the alarm.......................... 103
Fu nction................................................ 102
Fu nction of interior pr otection............... 103
Priming/deactivating interior pr otec‐
tion........................................................ 104
Priming/deactivating tow- aw ay pro‐
te ction................................................... 103
To w- aw ay protection function................1 03
AT TENTION ASSI ST
Fu nction................................................ 232
Setting................................................... 233
Sy stem limitations................................. 232
At tention assistant
see ATTENTION ASSIST
Au thorised workshop
see Qualified specialist workshop 508
Index