2009 Cadillac STS-V Owner's Manual - Page 193

With Twilight Sentinel the following will happen: • When it is dark enough outside, the front turn signal lamps (DRL) will go off, and the headlamps and parking lamps will come on. The other lamps that come on with headlamps will also come on. Twilight Sentinel also provides exterior illumination as you leave the vehicle. If Twilight Sentinel has turned on the lamps when you turn off the ignition, the lamps will remain on until: • The exterior lamp switch is moved from off to the parking lamp position. • When it is bright enough outside, the headlamps will go off, and the front turn signal lamps (DRL) will come on, as long as the exterior lamp switch is in the off position. If the vehicle is started in a dark garage, the automatic headlamp system comes on immediately. Once the vehicle leaves the garage, it will take about one minute for the automatic headlamp system to change to DRL if it is light outside. During that delay, the instrument panel cluster might not be as bright as usual. Make sure the instrument panel brightness control is in full bright position. See Instrument Panel Brightness on page 3-40 for more information. You can idle the vehicle with the lamps off, even when it is dark outside. First set the parking brake while the ignition is in OFF/ACCESSORY. Then start the vehicle. The lamps will stay off until the parking brake is released. • A delay time that you select has elapsed. See Vehicle Personalization on page 2-61 to select the delay time needed. You can also select no delay time. If the ignition is turned off with the exterior lamp switch in the parking lamp or headlamp position, the Twilight Sentinel delay will not occur. The lamps will turn off as soon as the switch is turned off. As with any vehicle, the regular headlamp system should be turned on when needed. 3-39