maximum value can vary depending on the
charge status of the battery and the battery
temperature.
Radar sensors measure the distance to and
the speed of a vehicle ahead. The shorter
the distance to the vehicle ahead, the
greater the recuperation. When recupera-
tion is high, the brake lamps also light up.
The current level of recuperation is not
shown in the power display (Y page 74).
Radar-based recuperation is not active in
the following cases:
R
the radar sensor system is malfunction-
ing
R
the connection to the radar is interrupted
R
Active Brake Assist is deactivated
R
ECO mode is activated.
R
the vehicle speed is too low
R
the transmission is in position k or i
Radar-based recuperation is deactivated
when ECO mode is activated.
On-board computer with colour display: the
symbol in the display indicates the
status of radar-based recuperation:
R
lights up white: switched on, not
active
R
lights up green: switched on, active
R
is not displayed: Active Brake Assist
is deactivated or the radar sensor is mal-
functioning
On-board computer with colour display:
radar-based recuperation is switched on
and off in the on-board computer
(Y page 113).
Observe the notes on safe driving
(Y page 58).
Driving economically
Notes on economical driving
In order to save energy, a part of the kinetic
energy is recuperated and stored in the
high-voltage battery. When the driver
releases the accelerator pedal, the vehicle
decelerates.
In the following cases, the vehicle does not
decelerate, or only decelerates to a limited
extent, when the accelerator pedal is
released:
R
the gear lever is in position h and the
vehicle is rolling backwards
R
the gear lever is in position k and the
vehicle is rolling forwards
On steep slopes, the vehicle may not be
held at all or only be held to a limited
degree.
In the following cases recuperation is
restricted:
R
the high-voltage battery is full or too
cold
R
the power electronics or engine has over-
heated
Recommendations for driving economically:
R
accelerate moderately
R
observe the power availability dis-
play(Y page 74)
R
drive with care
R
use the air conditioning and the electri-
cal consumers sparingly
R
have maintenance work carried out at the
specified service intervals
You can use ECO mode in order to save more
energy.
ECO mode has the following characteristics:
R
reduced torque and significantly reduced
power. This supports a particularly effi-
cient, steady driving style. The speed is
reduced to approx. 110 km/h.
R
the performance of the air-conditioning
and heating systems is reduced.
R
the maximum available recuperation is
activated.
R
the vehicle accelerates more slowly.
R
the "radar-based recuperation" function
is switched off.
To increase acceleration when in ECO mode,
depress the accelerator pedal beyond the
pressure point.
Driving economically
73
>> Driving.
Z
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