Exit Lighting; Battery Load Management - GMC Cadillac CT5 2021 Manual

If the vehicle has remained parked for
an extended period of time with no
remote key use or Keyless Access
operation, approach detection will be
disabled. To reactivate, press any
button on the remote key or open and
close all vehicle doors to re-enable the
entry lighting feature on approach.
Approach detection will not work if:
The vehicle battery is low.
The ignition is on or in ACC/
ACCESSORY.
Entry lighting is set to Off. See
Vehicle Locator Lights under
Vehicle Personalization 0 122.
Approach detection will not work with
a single remote key if:
The remote key is left within a 5 m
(16 ft) range of the vehicle for
several minutes
The remote key is left inside the
vehicle and all the doors are closed
To help maximize remote key battery
life, do not store the remote key
within 5 m (16 ft) of the vehicle.

Exit Lighting

Some exterior lamps come on at night,
or in areas with limited lighting, when
the driver door is opened after the
ignition is turned off.
The dome lamp comes on after the
ignition is turned off or any door is
opened. The exterior lamps and dome
lamp remain on after the door is
closed for a set amount of time, then
automatically turn off.
The exterior lamps turn off
immediately by turning the exterior
lamp control off.
The exit lighting for exterior lights can
be changed. See Vehicle Personalization
0 122.

Battery Load Management

The vehicle has Electric Power
Management (EPM), which estimates
the battery's temperature and state of
charge. It then adjusts the voltage for
best performance and extended life of
the battery.
LIGHTING
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 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, 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.
137