Mercedes-Benz GLS 2023, Operator'S Manual

Page: 420 / 538

#
Observe the instructions in the
Mercedes-Benz Specifications for Oper-
ating Fluids 320.1.
Have the coolant regularly replaced at a qualified
specialist workshop.
Proportion of antifreeze concentrate in the cool-
ing system:
R
A minimum of 50% (antifreeze protection down
to about -35°F (-37°C))
R
A maximum of 55% (antifreeze protection
down to -49°F (-45°C))
Coolant filling capacity
Engine coolant
Model Capacity
GLS 450 4MATIC 18.0 US qt
(17.0 liters)
GLS 580 4MATIC 16.6 US qt
(15.7 liters)
Engine coolant (Mercedes-Maybach)
Model Capacity
Mercedes-Maybach
GLS 600 4MATIC
16.6 US qt
(15.7 liters)
Notes on windshield washer fluid
Observe the notes on operating fluids
(
/
page 412).
&
WARNING ‑ Risk of fire and injury from
windshield washer concentrate
Windshield washer concentrate is highly flam-
mable. It could ignite if it comes into contact
with hot engine component parts or the
exhaust system.
#
Make sure that no windshield washer
concentrate spills out next to the filler
opening.
* NOTE Damage to the exterior lighting due
to unsuitable windshield washer fluid
Unsuitable windshield washer fluid may dam-
age the plastic surface of the exterior lighting.
#
Only use windshield washer fluid which is
also suitable for use on plastic surfaces,
e.g. MB SummerFit or MB WinterFit.
*
NOTE Blocked spray nozzles caused by
mixing windshield washer fluids
#
Do not mix MB SummerFit and MB Win-
terFit with other windshield washer flu-
ids.
Do not use distilled or de-ionised water. Other-
wise, the fill level sensor may be triggered errone-
ously.
Recommended windshield washer fluid:
R
Above freezing point: e.g. MB SummerFit
R
Below freezing point: e.g. MB WinterFit
For the correct mixing ratio, refer to the informa-
tion on the antifreeze container.
418 Technical data