Pontiac 2003 Bonneville Owner's Manual page 129

Daytime Running Lamps
Daytime Running Lamps (DRL) can make it easier for
others to see the front of your vehicle during the
day. DRL can be helpful in many different driving
conditions, but they can be especially helpful in the short
periods after dawn and before sunset. Fully functional
daytime running lamps are required on all vehicles
first sold in Canada.
A light sensor on top of the instrument panel monitors
the exterior light level for the operation of DRL and
Twilight Sentinel@, so be sure it isn't covered. The DRL
system will make your high-beam headlamps come
on at a reduced brightness when the following conditions
are met:
The ignition is on,
the exterior lamp control is
off,
and
the transaxle is not in PARK (P).
When the DRL are on, only your high-beam headlamps
will be on at reduced intensity. The taillamps,
sidemarker and other lamps won't be on. Your
instrument panel won't be lit either.
When it's dark enough outside, your regular intensity
headlamps will come on at full brightness and the DRL
lighting will turn off. The parking lamps that normally
come on with your headlamps will also come on. When
it's bright enough outside, the regular intensity
headlamps and parking lamps will turn back
off,
and the
reduced brightness DRL lighting will turn back on.
To idle your vehicle during the day with the DRL
off,
shift the transaxle into PARK (P). The DRL will stay
off
until you shift out of P.4RK (P).
At night, you can turn
off
all exterior lamps when you
are in PARK (P) by turning the Twilight Sentinel@ knob
all the way to OFF.
If the knob was already in OFF, it must be cycled to ON
and back to OFF. Turn the knob clockwise to turn the
exterior lighting back on. The lamps will come back
on automatically when you put the transaxle in gear.
As with any vehicle, you should turn on the regular
headlamp system when you need it.
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