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Dynamic power management
While the vehicle is moving, this function distrib
utes the available power to the various electrical
components and systems according to their re
quirements. The power management ensures
that on-board systems do not consume more
electrical power than the alternator can supply,
and thus maintains the maximum possible bat
tery power Level.
ijJ
Note
- The power management system is not able
to overcome the given physical Limits.
Please remember that the power and Life of
the battery are Limited.
- If the indicator Lamp
ril
c:>
page 13
appears,
the starting ability may be impaired.
Points to remember
Starting ability has first priority.
Short trips, city traffic and Low temperatures all
place a heavy Load on the battery. In these condi
tions a Large amount of power is consumed, but
only a small amount is supplied. The situation is
also critical if electrical equipment is in use when
the engine is not running. In this case power is
consumed when none is being generated.
In these situations you will be aware that the
power management system is intervening to con
trol the distribution of electrical power.
When the vehicle is parked for long periods
If you do not drive your vehicle for a period of
several days or weeks, the power management
will gradually shut off the on-board systems one
by one, or reduce the amount of current they are
using. This Limits the amount of power consumed
and helps to ensure reliable starting even after a
Long period. Certain convenience features, such
as remote control unlocking, may not be availa
ble. These functions will be restored when you
switch on the ignition and start the engine.
Intelligent technology
With the engine switched off
If you Listen to the radio or use other electrical
equipment when the engine is not running, this
will discharge the battery.
A message will appear on the infotainment dis
play before the battery power drops to a Level
where the starting ability is impaired.
This message warns you that the system you are
using will soon be switched off automatically.
You should therefore start the engine if you wish
to continue using the system.
When the engine is running
Although the alternator generates electrical pow
er, the battery can still become discharged while
the vehicle is being driven. This can occur when a
Lot of power is being consumed but only a small
amount supplied, especially if the battery is not
fully charged initially.
To restore the necessary energy balance, the sys
tem will then temporarily shut off the electrical
components that are using a Lot of power, or re
duce the current they are consuming. Heating
systems in particular use a Large amount of elec
trical power. If you notice, for instance, that the
seat heating* or the rear window heater is not
working, they may have been temporarily switch
ed off or regulated to a Lower heat output. These
systems will be available again as soon as suffi
cient electrical power is available.
You may also notice that the engine runs at a
slightly faster idling speed. This is quite normal,
and no cause for concern. The increased idling
speed allows the alternator to meet the greater
power requirement and charge the battery at the
same time.
Information saved in the
control units
The vehicle is fitted in the factory with electronic
control units that, among other things, control
the engine and the gearbox. The control units al
so monitor the exhaust system and the airbags.
The control units continually analyse data rele-
vant to the vehicle while you are driving. In the
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