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:
Engine Coolant Temperature Gauge
This gauge shows the engine coolant temperature.
If the indicator on the gauge moves towards the shaded area on the thermostat,
it means that the engine coolant has overheated. If the vehicle has ...
Rear
The 2nd row outboard seats are warmed by
built-in heaters. The switches located on
the back side of the center console can be
operated independently of each other.
1. Start the engine.
...
High Voltage Devices and Wiring
WARNING
Exposure to high voltage can cause shock, burns, and even death. The high voltage
components in the vehicle can only be serviced by technicians with special training.
High voltage componen ...