Mercedes-Benz EQS 2021 Owner's Manual page 192

Press release tab 3 on high-voltage discon‐
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nect device 2 in the direction of the arrow
and pull it out.
Pull connector 4 in the direction of the
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arrow until it engages.
The high-voltage on-board electrical system
is switched on.
All work on the drive system (including after dis‐
connecting the high-voltage on-board electrical
system manually) may only be carried out by a
qualified specialist workshop.
Calling up the energy flow display
Multimedia system:
© Info
4 5
Select Energy flow.
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The energy flow in the vehicle is displayed.
Regenerative brake system
Function of the recuperative brake system
Depending on the selected recuperation level,
the electric motors are operated as an alternator
when in overrun mode and during braking in
order to charge the high-voltage battery while
driving. As soon as you release the accelerator
pedal when the vehicle is in motion, recupera‐
tion in overrun mode is initiated.
The higher the recuperation, the more sharply
the vehicle is braked when coasting and the
more electrical energy is fed into the high-volt‐
age battery.
Driving and parking 189
The recuperative brake system has the following
characteristics:
supports braking with electronically control‐
R
led brake force boosting
converts the kinetic energy of the vehicle
R
into electric energy
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If you brake hard, the mechanical brake is
also used. This means that the maximum
recuperative energy cannot be recovered.
The more you drive and brake in an anticipa‐
tory manner, the more efficiently the recu‐
perative energy can be used.
System limits
The braking effect of the electric motor during
recuperation in overrun mode may be reduced or
may not be available at all in the following situa‐
tions:
when the high-voltage battery charge level
R
increases
if the high-voltage battery is not yet at a nor‐
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mal operating temperature
when driving at speeds close to zero
R