Cadillac 2012 CTS - Manuel (Page 198)

Black plate (8,1) Cadillac CTS/CTS-V Owner Manual (Include Mex) - 2012
6-8 Lighting
Parade Dimming
This feature does not let the
instrument panel display screens
dim during daylight hours while the
ignition is in the ACC/ACCESSORY
or ON/RUN position and the parking
lamps or headlamps are on. Parade
dimming automatically works with
the light sensor, located on top of
the dashboard. If it is dark enough
outside and the parking lamps or
headlamps are on, the instrument
panel display screens can be
adjusted by turning the instrument
panel brightness knob clockwise or
counterclockwise to brighten or dim
the lighting. See Instrument Panel
Illumination Control on page 6‑6.
The instrument panel control
backlighting can still be adjusted
while in parade mode.
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 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.