Table of Contents
Advertisement
will have no warning from a sudden in-
crease in engine speed as with a front-
wheel drive vehicle. Always drive at
speeds wh ich are suited to the road con-
ditions - risk of crash.
Energy
management
Starting ability is optimized
Energy management controls the distribution
of electrical energy and thus optimizes the
availability of electrical energy for starting
the engine.
If
a vehicle with a conventional energy system
is not driven for a long period of time, the bat-
tery is discharged by idling current consumers
(e.g. immobilizer) . In certain circumstances it
can result in there being insufficient energy
available to start the engine.
I ntelligen t energy management in your vehi-
cle handles the distribution of electrical ener-
gy. Starting ability is marked ly improved and
the life of the battery is extended .
Basically, energy management consists of
battery diagnosis, idling current manage-
ment and dynamic energy management.
Battery diagnosis
Batt ery diagnosis continuously dete rmines
the state of the battery. Sensors determine
battery volt age, battery current and battery
temperature. This determines the current
state of charge and the power of the battery.
Idling current management
I dling current management reduces energy
consumption while the vehicle is stand ing.
With the ignition switched off, it contro ls the
energy supply to the various electrica l compo-
nents . Data from battery diagnosis is consid-
ered.
Depending on the battery's state of charge,
individual consumers are gradually turned off
to prevent excessive discharge of the battery
and thus mainta in start ing capability.
Intelligent
technology
191
Dynamic energy management
While the vehicle is being driven, dynamic en-
ergy management distrib utes the energy gen-
erated according to the needs of the individ u-
al components. It regulates consumption, so
that more electrical energy is not being used
than is being generated and ensures an opti-
mal state of charge fo r the battery .
{!)
Tips
- But even energy management cannot
negate the limits of physics. Consider
that the power and life of a battery are
limited .
- If start ing ability is threatened, the indi-
cator light(•]
appears ¢
page 17 .
What you should know
The highest priority is given to maintaining
starting capability.
The battery is severely taxed in short-distance
driv ing, in city traff ic and during the cold time
of year. Abundant electrical energy is re-
quired, but on ly a little is generated . It is also
crit ical if the engine is not running and electri-
cal components are turned on . In this in-
stance energy is being consumed but none is
being generated .
It is in precisely these situations that you will
notice energy management actively regu lat-
ing the distribution of energy.
Vehicle stands for an extended period
If you do not drive your vehicle over a period
of several days or weeks, electr ical compo -
nents are gradually cut back or switched off .
This reduces energy consumption and main-
tains starting capability over a longer period .
Some of th e convenience functions may not
operate, such as the interior lights or t he
power seat adjustment. The convenience
functions wi ll be available again when you
switch on the ignition and start the engine.
•
•
Advertisement
Table of Contents
