Battery Run-Down Protection; Accessory Power Outlet(S) - Chevrolet 2010 Colorado Owner's Manual

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.
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 4-36.
4-14

Battery Run-Down Protection

This feature shuts off the dome lamp if it is left on for
more than 20 minutes when the ignition is in LOCK/OFF.
This helps to prevent the battery from running down.

Accessory Power Outlet(s)

The accessory power outlets can be used to connect
electrical equipment such as a cellular phone.
The vehicle may have an accessory power outlet located
below the climate control system and on the rear of the
center console. A small cap must be pulled down to
access an accessory power outlet. When not using an
outlet be sure to cover it with the protective cap.
Notice: Leaving electrical equipment on for
extended periods will drain the battery. Always
unplug electrical equipment when not in use and do
not plug in equipment that exceeds the maximum
amperage rating of 20 amperes.
Certain electrical accessories may not be compatible
with the accessory power outlet and could result
in blown vehicle or adapter fuses. If you experience
a problem, see your dealer/retailer for additional
information on accessory power outlets.