Hybrid drive system
Problem
Possible causes/consequences and
M
Solutions
The hybrid drive system
has been switched off
automatically.
You have been in an accident.
The hybrid drive system remains switched off if:
R
the internal combustion engine cannot be restarted after a few
seconds.
R
the red
6
restraint system warning lamp in the instrument clus-
ter is lit.
X
Consult a qualified specialist workshop.
The hybrid drive system
has been switched off
automatically. The multi-
function display also
shows a display mes-
sage.
An electrical short circuit has occurred in the hybrid drive system or an
electrical connection has been disconnected.
X
Observe the additional display messages in the multifunction dis-
play (
Y
page 45).
X
Consult a qualified specialist workshop.
Driving tips
General driving tips
Drive carefully and maintain a safe distance
from the vehicle in front. Avoid frequent and
sudden acceleration as well as abrupt braking.
During partial electric driving, pulling away and
acceleration, the electric motor supports the
internal combustion engine.
During overrun in transmission position D and
braking, the electric motor will operate as a gen-
erator.
Further information on the ECO start/stop func-
tion (
Y
page 25).
Further driving tips (see the vehicle Operator's
Manual).
Stationary vehicle
If the vehicle is stopped, the combustion engine
is, for the most part, switched off. Automatic
climate control continues to function. The elec-
tromechanically assisted steering gear allows
you to use the power steering without reduced
comfort.
Acceleration
Depending on the operating mode, pulling away
and driving under low load conditions are per-
formed:
R
entirely by electric propulsion
R
in combination with the internal combustion
engine
When accelerating at an increased or full load,
boost mode is utilized. The electric motor sup-
ports the internal combustion engine by provid-
ing additional torque when the accelerator is
depressed rapidly.
Overrun mode or braking
There are three possible operating modes when
the hybrid vehicle is decelerating:
R
when coasting and decelerating, recupera-
tion is already taking place (
Y
page 21). The
electric motor operates as a generator and
stores the recovered energy in the high-volt-
age battery.
R
when the brakes are applied lightly, the vehi-
cle is slowed down further by the electric
motor. Recuperation is increased
(
Y
page 21). The electric motor operates as a
Driving tips
27
Driv
ing
and
parking
Z
