Cadillac 2005 DeVille - Manual (Page 133)

When the Twilight Sentinel ® lever is on and it is dark
enough outside, the low-beam headlamps at reduced
intensity will turn off and normal low-beam headlamp
operation will occur.
When the Twilight Sentinel ® lever is on and it is bright
enough outside, the regular lamps will go off, and
the low-beam headlamps at reduced brightness will take
over. If you start your vehicle in a dark garage, the
automatic headlamp system will come on immediately.
Once you leave the garage, it will take approximately
one minute for the automatic headlamp system to
change to DRL if it is light outside. During that delay,
your instrument panel cluster may not be as bright
as usual. Make sure your instrument panel brightness
knob is in the full bright position. See Instrument
Panel Brightness on page 3-20.
If it is dark enough outside and the Twilight
Sentinel
® lever is off, a HEADLAMPS SUGGESTED
message will display on the Driver’s Information
Center (DIC). This message informs the driver that
turning on the exterior lamps is recommended even
though the DRL are still illuminated.
Turning on the Twilight Sentinel ® or the headlamps will
deactivate the DRL and remove the HEADLAMPS
SUGGESTED message. If the parking lamps or the fog
lamps were turned on instead, the DRL will still
deactivate and the HEADLAMPS SUGGESTED
message will continue to be displayed.
To idle your vehicle with the DRL off at night, turn off the
Twilight Sentinel
® and shift the transaxle into PARK (P).
Placing your vehicle in PARK (P) disables the DRL. The
DRL will stay off until you shift out of PARK (P).
To drive your vehicle with the DRL off, turn off the
Twilight Sentinel
® and manually turn on the parking
lamps or fog lamps (if equipped).
As with any vehicle, you should turn on the regular
headlamp system when you need it.
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