Mercedes-Benz S-Class 2020 Operator's Manual page 181

* NOTE Damage to the drivetrain and
engine when pulling away
Do not warm up the engine while the
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vehicle is stationary. Pull away immedi‐
ately.
Avoid high engine speeds and driving at
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full throttle until the engine has reached
its operating temperature.
* NOTE Damage to the catalytic converter
due to non-combusted fuel
The engine is not running smoothly and is
misfiring.
Non-combusted fuel may get into the cata‐
lytic converter.
Only depress the accelerator pedal
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slightly.
Have the cause rectified immediately at
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a qualified specialist workshop.
Plug-in hybrid: observe the notes in the Supple‐
ment. Otherwise, you may fail to recognize dan‐
gers.
Notes on driving on salt-treated roads
The braking effect is limited on salt-treated
roads.
Therefore, observe the following notes:
Due to salt build-up on the brake discs and
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brakepads, the braking distance can increase
considerably or result in braking only on one
side
Maintain a much greater safe distance to the
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vehicle in front
To remove salt build-up:
Brake occasionally while paying attention to
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the traffic conditions
Carefully depress the brake pedal at the end
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of the journey and when starting the next
journey
Notes on hydroplaning
Hydroplaning can take place once a certain
amount of water has accumulated on the road
surface.
Driving and parking 179
Observe the following notes during heavy precip‐
itation or in conditions in which hydroplaning
may occur:
Reduce speed
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Avoid tire ruts
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Avoid sudden steering movements
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Brake carefully
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% Also observe the notes on regularly checking
wheels and tires ( page 446).
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Notes on driving through water on the road
surface
Water which has entered into the vehicle can
damage the engine, electrics and transmission.
Water can also enter the air intake of the engine
and cause engine damage.
Observe the following if you must drive through
water:
The water, when calm, may only reach the
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lower edge of the vehicle body
Drive at walking pace at most, otherwise
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water can enter the vehicle interior or engine
compartment