Mercedes-Benz GLE Coupe 2023 Operator's Manual page 323

Park the vehicle on a level surface.
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Check the coolant temperature display on the
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driver's display.
The coolant temperature must be in the bot-
tom quarter of the temperature indicator.
Slowly turn cap 1 counter-clockwise to
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release overpressure.
Continue turning cap 1 counter-clockwise
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and remove it.
The coolant level is correct in the following cases:
If the engine is cold, the coolant is up to
R
marker bar 2.
If the engine is warm, the coolant is up to
R
0.6 in (1.5 cm) over the marker bar 2.
If necessary, refill with coolant that has been
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approved for Mercedes-Benz.
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Further information on coolant (
Refilling the windshield washer system
& WARNING Risk of burns from hot compo-
nent parts in the engine compartment
Certain component parts in the engine com-
partment can be very hot, e.g. the engine, the
cooler and parts of the exhaust system.
Allow the engine to cool down and only
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touch component parts described in the
following.
& 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
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concentrate spills out next to the filler
opening.
page 394).
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Maintenance and care 321