Cadillac 2011 DTS Owner's Manual page 189

EPM works to prevent excessive discharge of the
battery. It does this by balancing the generator's output
and the vehicle's electrical needs. It can increase
engine idle speed to generate more power, whenever
needed. It can temporarily reduce the power demands
of some accessories.
Normally, these actions occur in steps or levels, without
being noticeable. In rare cases at the highest levels of
corrective action, this action may be noticeable to the
driver. If so, a Driver Information Center (DIC) message
might be displayed, such as BATTERY SAVER
ACTIVE, BATTERY VOLTAGE LOW, or LOW
BATTERY. If this message is displayed, it is
recommended that the driver reduce the electrical loads
as much as possible. See DIC Warnings and Messages
on page 4 62.
This feature protects the vehicle battery against
drainage from the interior lamps, trunk lamp, glove box
lamp, or the garage door opener. When the ignition is
turned off, the power to these features automatically
turns off after 10 minutes. Power is restored for an
additional 10 minutes if any door or trunk is opened,
or the courtesy lamp switch is turned on.
This feature helps prevent the battery from being
drained, if the interior courtesy lamps, reading/map
lamps, visor vanity lamps or trunk lamp are accidentally
left on. If any of these lamps are left on, they
automatically turn off after 10 minutes, if the ignition is
off. The lamps will not come back on again until one of
the following occurs:
The ignition is turned on.
The exterior lamps control is turned off, then on
again.
The headlamps will timeout after 10 minutes, if they are
manually turned on with the ignition on or off.
The accessory power outlets can be used to plug in
electrical equipment, such as a cell phone or MP3
player.
If the vehicle has a center console, the power outlet is
located inside the lower storage area. Some vehicles
may have an outlet on the right front lower part of the
driver's seat and under the climate control system next
to the ashtray. See Center Console Storage on
page 3 52.
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