Chevrolet MONTE CARLO 1998 Manual page 97

The DRL system will make your high-beam headlamps
come
on
at
a
reduced brightness when:
The ignition is on,
The headlamp switch is off and
0
The parking brake is released.
When the DRL are on, only your reduced intensity
high-beam headlamps will be on. The taillamps,
sidemarker and other lamps won't be on. Your
instrument panel won't be lit up either.
When it's dark enough outside, your DRL will turn off
and your low-beam headlamps will turn on. The other
lamps that come on with your headlamps will also
come on.
When it's bright enough outside, the low-beam
headlamps will go out and DRL turns on your
high-beam headlamps at reduced intensity.
To idle your vehicle with the DRL off, set the parking
brake while the ignition is in OFF or LOCK. Then start
your vehicle. The DRL will stay off until you release
the parking brake.
As with any, vehicle, you should turn on the regular
headlamp system when you need it.
Interior Lamps
Instrument Panel Brightness Control
You can brighten or dim the instrument panel lamps by
moving the dial (located next to the headlamp switch.)
See "Exterior Lamps" text earlier in this section.
If you turn the dial all the way up, your courtesy or
interior lamps will come on.
Courtesy Lamps
When any door is opened, several lamps come on. These
lamps are courtesy lamps. They make it easy for you to
enter and leave your vehicle. You can also turn these
lamps on by moving the dial near the headlamp knob all
the way up.
Some of the lamps have switches so you can turn them
on, even when the doors are closed. These lamps are
reading lamps. To avoid draining your battery, be sure
to turn off all reading lamps when leaving your vehicle.
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. . .