Buick Enclave: Battery Load 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 bring the charge back up.
When the state of charge is high, the voltage is lowered slightly to prevent overcharging. If the vehicle has a voltmeter gauge or a 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 of the power needed for very high electrical loads.
► 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 DIC message might be displayed, such as BATTERY SAVER ACTIVE, BATTERY VOLTAGE LOW, or LOW BATTERY.
If one of these messages displays, it is recommended that the driver reduce the electrical loads as much as possible. See Driver Information Center (DIC) .
Parade Dimming
This feature automatically prohibits the dimming of the instrument panel displays
in daylight while the headlamps are on so that the displays are still able to be
seen. ...
Battery Power Protection
This feature helps prevent the battery from being drained, if the interior courtesy
lamps or reading lamps are accidentally left on.
If any of these lamps are left on, they automatically turn off a ...
See also:
Automatic anti-glare mirrors
WARNING
If incident light from headlamps is prevented
from striking the sensor in the rear-view
mirror, for instance, by luggage piled too high
in the vehicle, the mirror's automatic a ...
If the On Indicator is Lit for a Child Restraint
If a child restraint has been installed and the on indicator is lit:
1. Turn the vehicle off.
2. Remove the child restraint from the vehicle.
3. Remove any additional items from the seat such as bl ...
Preparing the vehicle
WARNING
The wheel and tire size of the emergency
spare wheel/spare wheel may differ to that of
the damaged wheel. When using an
emergency spare wheel/spare wheel the
handling characte ...