Black plate (8,1)Cadillac CTS/CTS-V Owner Manual (Include Mex) - 20126-8 LightingParade DimmingThis feature does not let theinstrument panel display screensdim during daylight hours while theignition is in the ACC/ACCESSORYor ON/RUN position and the parkinglamps or headlamps are on. Paradedimming automatically works withthe light sensor, located on top ofthe dashboard. If it is dark enoughoutside and the parking lamps orheadlamps are on, the instrumentpanel display screens can beadjusted by turning the instrumentpanel brightness knob clockwise orcounterclockwise to brighten or dimthe lighting. See Instrument PanelIllumination Control on page 66.The instrument panel controlbacklighting can still be adjustedwhile in parade mode.Battery LoadManagementThe vehicle has Electric PowerManagement (EPM) that estimatesthe battery's temperature and stateof charge. It then adjusts the voltagefor best performance and extendedlife of the battery.When the battery's state of chargeis low, the voltage is raised slightlyto quickly bring the charge back up.When the state of charge is high,the voltage is lowered slightly toprevent overcharging. If the vehiclehas a voltmeter gauge or a voltagedisplay on the Driver InformationCenter (DIC), you may see thevoltage move up or down. This isnormal. If there is a problem, analert will be displayed.The battery can be discharged atidle if the electrical loads are veryhigh. This is true for all vehicles.This is because the generator(alternator) may not be spinning fastenough at idle to produce all thepower that is needed for very highelectrical loads.A high electrical load occurs whenseveral of the following are on, suchas: headlamps, high beams, foglamps, rear window defogger,climate control fan at high speed,heated seats, engine cooling fans,trailer loads, and loads plugged intoaccessory power outlets.EPM works to prevent excessivedischarge of the battery. It does thisby balancing the generator's outputand the vehicle's electrical needs.It can increase engine idle speed togenerate more power, wheneverneeded. It can temporarily reducethe power demands of someaccessories.
