Mercedes-Benz E CLASS 2020 Operator's Manual page 367

* NOTE Damage caused by refilling too
much engine oil
Too much engine oil can damage the engine
or the catalytic converter.
Have excess engine oil removed at a
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qualified specialist workshop.
Turn cap 1 counter-clockwise and remove
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it.
Add engine oil.
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Replace cap 1 and turn it clockwise as far
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as it will go.
Check the oil level again ( page 363).
/
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Checking the coolant level
& WARNING Risk of burns from hot com‐
ponent parts in the engine compartment
Certain components in the engine compart‐
ment can be very hot, e.g. the engine, the
radiator 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 scalding from hot
coolant
The engine cooling system is pressurized,
particularly when the engine is warm. If you
Maintenance and care 365
open the cap, you could be scalded by hot
coolant spraying out.
Let the engine cool down before open‐
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ing the cap.
When opening the cap, wear protective
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gloves and safety glasses.
Open the cap slowly to release pres‐
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sure.