Chevrolet TRACKER 2003 Manual page 124

When the DRL are on, only your headlamps will be on
at a reduced brightness. The taillamps, sidemarker
and other lamps won't be on. Your instrument panel
won't be lit up either.
When you move the exterior lamps control to the
headlamp position, your DRL will go off and your
headlamps will come on. The other lamps that come on
with your headlamps will also come on.
When it begins to get dark, the headlamps will
automatically switch from DRL to the regular headlamps.
See "Automatic Light Control" following.
When you turn the exterior lamp control to off, the
regular lamps will go off and your headlamps will change
to the reduced brightness of DRL provided it is not
dark outside. DRL will also come on if only the parking
lamps are being used.
As with any vehicle, you should turn on the regular
headlamp system when you need it.
Automatic Headlamp System
Your vehicle is equipped with an automatic light sensor
on top of the instrument panel, on the passenger's
side of the vehicle, so be sure it is not covered. If it is,
the headlamps will remain on continuously.
There is a delay in the transition between the daytime
and nighttime operation of the DRL and the Automatic
Headlamp Systems so that driving under bridges or
bright overhead street lights does not affect the system.
The DRL and Automatic Headlamp Systems will only
be affected when the light sensor sees a change
in lighting lasting longer than this delay.
When it is dark enough outside, or you are driving
through a parking garage, heavy overcast weather or a
tunnel, the system will turn on your low-beam
headlamps at normal brightness. Along with your
vehicle's headlamps, the taillamps, sidemarker, parking
lamps and the instrument panel lights will also turn
on. The radio display will dim.
As with any vehicle, you should turn on the regular
headlamps when you need them.
To temporarily disable your vehicle's DRL and Automatic
Headlamp Systems functions, do the following:
1.
Before turning the ignition key to ON or START, set
the parking brake.
2. Then turn the ignition key to ON or START.
The Automatic Headlamp System will not turn on
under any conditions, even in darkness.
The DRL will not turn on.
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