2020 MERCEDES-BENZ GLS SUV air filter

Overview of climate control sy
stems Note
s on climate control An interior air
filter in combination with the pre‐
fi lter in the engine compartment must alw ays be
used so that the air conditioning sy stem, pollu‐
tion le vel monitoring and the air filtration work
cor rectl y.Make sure that thefilter is ins talled
cor rectly and thefilter housing in the engine
compartment is closed cor rectly using the cap
and alw ays tightly sealed when in operation. Use
fi lters recommended and appr ovedby
Mercedes-Benz. Alw ays ha veservice workcar‐
ri ed out at a qualified specialist workshop. Overview of
the air conditioning control
panel The indicator lamps on
the buttons indicate that
th e cor responding function is activated. THERMATIC air conditioning contro
l panel withsta‐
tionary heater (e xamp le)
1 w Setsthete mp erature on the driver's
side
2 A Calls up / exits the air conditioning
menu
Pressing and holding (appr ox.fo ur seconds):
re sets climate contro lto the basic settings
3 H Setsthe air flow or switches off climate
control
4 Ã Sets climate control toautomatic
mode (/ page176)
5 ¬ Demists the windscreen 6
¤ Switches there ar wind owheater
on/off
7 g Switches air-recirculation mode on/off
(/ page 177)
8 Á Switches the A/C function on/off
(/ page 175)
Switches residual heat on/off (/ page177)
9 Vehicles with THERMATIC or
THERMOTRONIC contro l panel withoutsta‐
tionary heater: 0switches synchronisa‐
tion on/off (/ page177)
Ve hicles with THERMATIC or
THERMOTRONIC contro l panel withstation‐
ary heater: &switches stationary heater
on/off (/ page180)
A w Setsthete mp erature on the front
passenger side 174
Climate cont rol

fi
ed based on the actual operating conditions
and/or loads.
Examples of arduous operating conditions:
R regular city driving with frequent intermedi‐
ate stops
R mainly short-dis tance driving
R frequent operation in mountainous terrain or
on poor road sur faces
R when the engine is of ten le ftidling for long
periods
R operation in particula rly dusty conditions
and/or if air-recirculation mode is frequently
used
In these or similar operating conditions, ha vethe
interior air filter, engine air cleaner, engine oil
and oil filter etc. changed more frequent ly. The
ty re s must be checked more frequently if the
ve hicle is operated under increased loads. Fur‐
th er information can be obtained at a qualified
specialist workshop. Battery disconnection periods
The ASS
YST PLUS se rvice inter val display
can only calculate the service due da tewhen
th e bat tery is connected. #
Notedown the service due date displa yed on
th e instrument display before disconnecting
th e battery (/ page 357). Engine compartment
Opening and closing
the bonnet &
WARNING Risk of accident due todriv‐
ing with the bonn etunlo cked
The bonn etmay open and block your vie w. #
Neverre lease the bonn etwhen driving. #
Before every trip, ensure that the
engine bonn etis loc ked. &
WARNING Risk of accident and inju ry
when opening and closing the bonn et
The bonnet may suddenly drop into the end
position.
There is a risk of injury for an yone in the bon‐
net's range of mo vement. #
Open or close the bonn etonly when
th ere is nobody in the bonn et's range of
mo vement. &
WARNING Danger of bu rns when open‐
ing the bonn et
If yo u open the engine bonn etwhen the
engine has overheated or during a fire inthe
engine compartment, you could come into
contact with hot gases or other escaping
operating fluids. #
Before opening the bonn et, allow the
engine tocool down. #
Intheeve nt of a fire inthe engine com‐
partment, keep the engine bonn et
closed and call thefire service. 358
Maintenance and care

appr
ovedSA E viscosity classes mu stbe
obser ved.
Mercedes-Maybach GLS 600 4MATIC: only
use SAE 0W-40 or SAE 5W-40 engine oils.
% Ifth e engine oils lis ted in theta ble are not
av ailable, you may add a maximum of
1. 0 litr e ofthefo llowing engine oils once
onl y.
Engine oils for one-time filling only in exceptional
cases:
R petrol engines:
- GLS 450 4MATIC: MB-Freigabe or MB-
Appr oval 229. 31orAC EA C3
- GLS 580 4MATIC: MB-Freigabe or MB-
Appr oval 229. 51orAC EA C3
- Mercedes-Mayba chGLS 600 4MATIC:
MB-F reigabe or MB-Appr oval 229.3 or
AC EA A3/B4
R diesel engines: MB-Freigabe or MB-Appr oval
229. 51orAC EA C3
The following values referto an oil change,
including the oil filter. Model
Capacity
GLS 580 4MATIC 9.5 litres
All other models 8.5 litres Mercedes‑Maybac
hCapacity
Mercedes-Mayba ch
GLS 600 4MATIC 9.5 lit
res Note
s on brake fluid Obser
vethe no tes on operating fluids
(/ page 417). &
WARNING Risk of an accident due to
va pour poc kets form ing in the brake sys‐
tem
The brake fluid cons tantly absorbs moi sture
from the air. This lo wersthe boiling point of
th e brake fluid. If the boiling point is too lo w,
va pour poc kets may form inthe brake sys‐
te m when the brakes are applied hard.
This impairs the braking ef fect. #
Have the brake fluid rene we d at the
specified inter vals. Ha
ve the brake fluid regularly replaced at a
qu alified specialist workshop.
Only use a brake fluid appr ovedby Mercedes-
Benz according toMB-F reigabe or MB-Appr oval
33 1.0. Coolant
Note
s on coolant
Obser vethe no tes on operating fluids
(/ page 417). &
WARNING Risk offire ‑ and inju ryfrom
antifreeze
If antifreeze comes into contact with hot
component parts in the engine compart‐
ment, it may ignite. #
Allow the engine tocool down before
yo uto p up the antif reeze. #
Make sure that no antifreeze spills out
next tothefiller opening. 424
Tech nical da ta

Display messages
Possible causes/consequences and M
MSolutions
8 Reserve fuel level *T
he fuel supply has dropped into there ser verange. #
Refuel.
!
Clean the fuel filter *
Ve hicles with diesel engines: the fuel filter is dirty or thewate r inthe fuel filter needs tobe drained. #
Consult a qualified specialist workshop.
¸ Replace air cleaner *
Ve hicles with diesel engines: the engine air filter is dirty and must be replaced. #
Consult a qualified specialist workshop.
Drive system Malfunction
Visit workshop *T
he drive sy stem is malfunctioning. #
Consult a qualified specialist workshop.
Drive system Malfunction
Stop Switch engine off *T
he drive sy stem is malfunctioning. #
Stop theve hicle immediately in accordance with the traf fic conditions and switch off the engine. #
Consult a qualified specialist workshop. 452
Display messages and warning/indicator lamps