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This will also occur to a certain extent when
the v
ehicle is rolling to stop when in overrun
mode or travelling downhill.
The higher the charge level of the high-volt-
age battery, the lower the recuperation and
thus also the engine braking effect. No brake
energy recuperation occurs and therefore no
engine braking effect is available once the
high-voltage battery is fully charged
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Position engaged and ECO assistance deac-
tiv
ated: no brake energy recuperation.
Position engaged and ECO assistance acti-
v
ated: automatic brake energy recuperation.
The energy recovery level is selected auto-
matically depending on the navigation data
and traffic situation.
Position engaged: high brake energy recu-
peration
The v
ehicle also performs recuperation when
the brake pedal is pressed.
Eco assistance
The ECO assistance function helps the driver
to use the engine braking effect of the vehi-
cle efficiently. It selects the energy recovery
level depending on the navigation data and
traffic situation.
The ECO assistance function can be switched
on and off in the vehicle settings in the Info-
tainment system.
Driving down hills
When driving down hills, you should drive in
position B if possible.
Never allow the vehicle to roll down moun-
tains or hills in the neutral position N. WARNING
The higher the charge level of the high-
v
oltage battery, the lower the engine brak-
ing effect, to the point where no engine
braking effect may be generated at all. This
puts more strain on the vehicle brake.
x Never fully charge the high-voltage bat-
tery at high elevations, e.g. at the top of
a pass, in order to facilitate a braking ef-
fect by means of recuperation when de-
scending.
x Reduce your speed before driving down
a long, steep gradient.
x When driving down a long, steep gradi-
ent, slow the vehicle using the vehicle
brake. Troubleshooting
Deactivation of the drive is imminent
The charge level of the high-voltage battery
is too low.
The indicator lamp lights up during v
ehicle
operation.
The indicator lamp lights up red.
A text message is shown on the ID. Cockpit
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Page 140 of 417
or third parties could lock the vehicle,
activ
ate the vehicle
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Automatically switching on the side lights
If the headlights are switched on at the time
the ignition is automatically deactiv
ated, the
side lights are switched on either until the
vehicle is locked or for no more than about
15 minutes. WARNING
When leaving the vehicle, always ensure
that the electronic parking brake is switch-
ed on and that all doors, windows, the boot
lid and bonnet are completely closed and
locked. Electronic immobiliser
The immobiliser helps to pre
vent the vehi-
cle
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You can continue to drive.
No v
alid vehicle key recognised
A corresponding display is shown in the
ID. Cockpit.
If the button cell in the vehicle key is weak or
discharged, it is possible that the vehicle key
will not be recognised.
In this case it is necessary to perform an
emergency start:
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turns to its initial position. Turning the switch
f
orward once more switches back to D posi-
tion.
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