With Twilight Sentinel® you will see the followinghappen:• When it is dark enough outside, the front turn signallamps (DRL) will go off, and the headlamps andparking lamps will come on. The other lampsthat come on with headlamps will also come on.• When it is bright enough outside, the headlampswill go off, and the front turn signal lamps (DRL)will come on, as long as the exterior lamp switch isin the off position.If you start your vehicle in a dark garage, the automaticheadlamp system will come on immediately. Onceyou leave the garage, it will take approximatelyone minute for the automatic headlamp system tochange to DRL if it is light outside. During that delay,your instrument panel cluster may not be as brightas usual. Make sure your instrument panel brightnesscontrol is in full bright position. See Instrument PanelBrightness on page 3-39 for more information.You can idle the vehicle with the lamps off, even when itis dark outside. First set the parking brake while theignition is in OFF/ACC. Then start the vehicle. The lampswill stay off until you release the parking brake.Twilight Sentinel® also provides exterior illumination asyou leave the vehicle. If Twilight Sentinel ® has turnedon the lamps when you turn off the ignition, your lampswill remain on until:• The exterior lamp switch is moved from off to theparking lamp position, or• a delay time that you select has elapsed.See Vehicle Personalization on page 2-53 to select thedelay time that you want. You can also select nodelay time.If you turn off the ignition with the exterior lamp switchin the parking lamp or headlamp position, the TwilightSentinel® delay will not occur. The lamps will turn off assoon as the switch is turned off.As with any vehicle, you should turn on the regularheadlamp system when you need it.Exterior Lighting Battery SaverIf the parking lamps or headlamps have been left on,the exterior lamps will turn off about 10 minutes after theignition is turned off. This protects against drainingthe battery in case you have accidentally left theheadlamps or parking lamps on. The battery saver doesnot work if the headlamps are turned on after theignition is turned off.If you need to leave the lamps on for more than10 minutes, use the exterior lamp control to turn thelamps back on.3-38