Mercedes-Benz S-Class 2022 Owner's Manual page 211

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208 Driving and parking
Characteristics when the accelerator pedal is
released during the journey:
The electric motor will be operated as an alter-
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nator when in overrun mode and during brak-
ing.
The high-voltage battery is charging.
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Notes on electric mode:
Vehicles with hybrid systems generate signifi-
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cantly less noise when stationary and when
being driven than vehicles with combustion
engines.
When you are driving in electric mode, the
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vehicle may not be heard by other road users
due to the significantly reduced noise gener-
ated.
It is for this reason that the vehicle is equip-
ped with a sound generator, which serves as
an acoustic vehicle alert system (AVAS).
If not all the vehicle conditions for electric
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mode are met, the combustion engine will be
switched on.
%
Vehicles with diesel particulate filters: during
the regeneration of the diesel particulate fil-
ter, the drive programmes are not available or
are restricted and the charge level of the high-
voltage battery may change.
Notes on the acoustic vehicle alert system:
The sound generator generates speed-depend-
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ent vehicle noise emissions when the vehicle
is driving forwards or reversing at a speed of
up to around 30 km/h.
This helps other road users, particularly
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pedestrians and cyclists, to hear your vehicle
better.
When you drive at speeds above 20 km/h the
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acoustic vehicle alert system will gradually
switch off.
The sound generator will be off when the vehi-
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cle is stationary.
Manual disconnection of the high-voltage on-
board electrical system
& DANGER Risk of death and fire due to
modified and/or damaged components of
the high-voltage on-board electrical sys-
tem
The vehicle's high-voltage on-board electrical
system is under high voltage. If you modify
component parts in the vehicle's high-voltage
on-board electrical system or touch damaged
component parts, you may be electrocuted. In
addition, modified and/or damaged compo-
nents may cause a fire.
In the event of an accident or impact to the
vehicle underbody, components of the high-
voltage electrical system may be damaged
although the damage is not visible.
Never make any modifications to the
#
high-voltage on-board electrical system.
Do not switch on or use the vehicle if its
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high-voltage on-board electrical system
components have been modified or dam-
aged.

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