Chevrolet 1998 Prizm Owner's Manual page 111

Lamps On Reminder
If you turn the ignition to LOCK or ACC and leave the lamps
on, you'll hear a tone when you open the driver's door.
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.
The DRL system will make your low-beam headlamps
come on at a reduced brightness when the parking brake
is released with the engine started, even with the lamp
switch in the OFF position. They will not go off until
the engine is turned off.
When you turn on the headlamp switch, your DRL will go
out and your headlamps will come on. The other lamps
that come on with your headlamps will also come on.
When you turn off the headlamp switch, the regular
lamps will go off and your low-beam headlamps come
on at the reduced brightness of DRL. DRL also comes
on if you are only using the parking lamps.
As
with any vehicle, you should turn on the regular
headlamp system when you need
it.
Automatic Light Control
Your vehicle is equipped with an automatic light sensor
on top of the instrument panel, so be sure it is not
covered which will cause the nighttime lights to be
on continuously.
When it is dark enough outside, your ALC will turn
on your low-beam headlamps at the normal brightness
along with other lamps such as the taillamps,
sidemarker, park lamps and instrument panel lights.
There is a 20-second delay in the transition between
daytime and nighttime operation of the DRL and the
ALC systems. If the light sensor senses a reduction
in lighting that lasts longer than 20 seconds, it will
activate the nighttime lamps. If you are driving through
a parking garage, heavy overcast weather, a tunnel or
fueling your vehicle in a low light area, the ALC will
turn on your low-beam headlamps at a normal
brightness along with the taillamps, sidemarker, park
lamps and the instrument panel lights. The radio lights
will be dimmer.
As with any vehicle, you should turn on the regular
headlamp system when you need it.
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