alternator BUICK LACROSSE 2007 Owner's Manual

Perimeter Lighting
Perimeter lighting provides a period of exterior
vehicle lighting. Perimeter lighting activates when
the key is removed from the ignition or the vehicle is
unlocked using the Remote Keyless Entry (RKE)
transmitter. The amount of time the exterior lamps
will remain on can be programmed using the Driver
Information Center (DIC). See “EXIT LIGHT
DELAY” underDIC Vehicle Personalization on
page 229for additional information.
Overhead Console Reading Lamps
Your vehicle may have reading lamps located
on the overhead console. Press the lens to turn
them on and off.
Rear Assist Handle Reading Lamps
Your vehicle may have reading lamps located
near the rear assist handles. Press the lens to turn
them on and off.
Electric Power Management
The vehicle has Electric Power Management (EPM)
that estimates the battery’s temperature and state
of charge. It then adjusts the voltage for best
performance and extended life of the battery.
When the battery’s state of charge is low, the
voltage is raised slightly to quickly put the charge
back in. When the state of charge is high, the
voltage is lowered slightly to prevent overcharging.
If the vehicle has a voltmeter gage or voltage
display on the Driver Information Center (DIC), you
may see the voltage move up or down. This is
normal. If there is a problem, an alert will be
displayed.
The battery can be discharged at idle if the
electrical loads are very high. This is true for all
vehicles. This is because the generator (alternator)
may not be spinning fast enough at idle to
produce all the power that is needed for very high
electrical loads.
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