Mercedes-Benz E-Class Coupe 2022 Operator's Manual page 278

276 Maintenance and care 276
Turn cap 1 counter-clockwise and remove it.
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Add engine oil.
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Replace cap 1 and turn it clockwise until it
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engages.
Check the oil level again ( page 274).
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Checking t Chec king the coolant lev he coolant level el
& W W ARNING
ARNING 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.
& W W ARNING
ARNING Risk of scalding from hot cool-
ant
If you open the cap, you could be scalded.
Let the motor cool down before opening
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the cap.
When opening the cap, wear protective
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gloves and safety glasses.
Open the cap slowly to release pressure.
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Park the vehicle on a level surface.
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Check the coolant temperature display in the
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instrument cluster.
The coolant temperature must be in the bot-
tom quarter of the temperature display.
Slowly turn cap 1 counter-clockwise to
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release overpressure.