Automatic Headlamp System
When it is dark enough outside, your Automatic
Headlamp System will turn on your headlamps at the
normal brightness along with other lamps such as
the taillamps, sidemarker, parking lamps and the
instrument panel lights. The radio lights will also be dim.
Your vehicle is equipped with a light sensor on the
top of the instrument panel under the defroster grill, so
be sure it is not covered which will cause the system
to be on whenever the ignition is on.
The system may also be on when driving through a
parking garage, heavy overcast weather or a tunnel.
This is normal.
There is a delay in the transition between the daytime
and nighttime operation of the DRL and the Automatic
Headlamp System 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.
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
control is in the full bright position. See “Instrument
Panel Brightness Control” under Interior Lamps
on page 3-16.
To idle your vehicle with the system off, set the parking
brake while the ignition is off. Then start the vehicle.
The system will stay off until you release the parking
brake.
As with any vehicle, you should turn on the regular
headlamps when you need them.
Headlamps Off in PARK (P)
To turn the headlamps off when it is dark outside, turn
the exterior lamps control to the parking lamp position.
In this position, the parking lamps, sidemarker lamps,
taillamps, license plate lamps and instrument panel
lights will be on, but the headlamps will be off.
To turn on the headlamps along with the other lamps
when it is dark outside, turn the exterior lamps control to
the AUTO or headlamp position.
3-15
Summary of Contents for 2004 Alero
Page 5: ...These are some examples of vehicle symbols you may find on your vehicle v...
Page 6: ...NOTES vi...
Page 17: ...Put someone on it Get it up to speed Then stop the vehicle The rider doesn t stop 1 11...
Page 68: ...NOTES 1 62...
Page 104: ...NOTES 2 36...
Page 106: ...Instrument Panel Overview 3 2...
Page 174: ...NOTES 3 70...
Page 220: ...NOTES 4 46...
Page 234: ...When you open the hood on the 3400 V6 engine you ll see the following 5 14...
Page 346: ...NOTES 7 14...