Buick 2009 Enclave - Manual (Page 135)

A high electrical load occurs when
several of the following are on, such
as: headlamps, high beams, fog
lamps, rear window defogger,
climate control fan at high speed,
heated seats, engine cooling fans,
trailer loads, and loads plugged into
accessory power outlets.
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 3-50. Battery Run-Down
Protection
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 time-out after
10 minutes, if they are manually
turned on with the ignition on or off.
Instrument Panel 3-17