Pontiac 2003 Bonneville Owner's Manual page 135

Inadvertent Power Battery Saver
This feature is designed to protect your vehicle's battery
against drainage from the interior lamps, trunk lamp,
glove box lamp or cigarette lighters. When the ignition is
turned off, the power to these features will automatically
turn off after 10 minutes. Power will be restored for
an additional 10 minutes if any door is opened, the trunk
is opened or the courtesy lamps are turned on. To
restore power back to the cigarette lighters the ignition
must be turned back to ON.
Battery Load Management
The battery load management feature is designed to
monitor the vehicle's electrical load and determine when
the battery is in a heavy discharge condition. During
times of high electrical loading, the engine may idle at
higher revolutions per minute (rpm) than normal to
make sure the battery charges. High electrical loads
may occur when several
of
the following are on:
headlamps, high beams, fog lamps, rear window
defogger, fan on high speed, heated seats and engine
cooling fans.
If your vehicle's battery remains in a heavy discharge
condition for a long period of time, the fan, rear
defogger, heated seats and heated mirrors will be
disabled and the DIC will display BATTERY SAVER
ACTIVE. This can happen either under long periods of
idling or low speed driving with high electrical loading,
or in the event of a charging system fault.
Monitor the battery voltage when in the BATTERY
SAVER ACTIVE mode.
If the voltmeter remains in the shaded area (below
11
volts) when driving then have the charging
system serviced immediately.
If the voltage increases above 12 volts then the
battery needs to be recharged. Try driving on
the highway with as few electrical accessories on
as possible.
3-20