Cadillac 1999 Eldorado, Owner'S Manual

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If it’s dark enough outside and the Twilight Sentinel
control is off, a HEADLAMPS SUGGESTED message
will display on the Driver Information Center (DIC).
This message informs the driver that turning on the
exterior lamps is recommended (it’s become dark
enough outside to require the headlamps and/or other
exterior lamps). Turning on the Twilight Sentinel, the
headlamps or the fog lamps will remove the
HEADLAMPS SUGGESTED message.
Light Sensor
The light sensor for the Daytime Running Lamps (DRL)
and the Twilight Sentinel is located in the center of the
front defogger grille. If you cover the sensor, it will read
“dark” and the lamps will come on.
Exterior Lighting Battery Saver
If the manual parking lamp control has been left on, the
exterior lamps will turn off approximately 10 minutes
after the ignition is turned to LOCK or ACCESSORY.
This protects draining the battery in case you have
accidentally left the headlamps or parking lamps on. If
you need to purposely leave the lamps on for more than
10 minutes with the ignition in LOCK or ACCESSORY,
turn the exterior lamps control knob off and then back
on. To delay the lamps from turning off, see “Twilight
Sentinel” in the Index.
Interior Lamps
Instrument Panel Intensity/Brightness
Control
The digital displays automatically dim when it becomes
dark outside and your lights are on. When it’s dark, the
brightness control can be manually adjusted by turning
the exterior lamps control knob counterclockwise to dim
and clockwise to brighten the lighting. The digital
displays automatically brighten when it becomes light
outside, although backlighting will remain active at the
selected brightness as long as the lights are on.