2005 CHEVROLET IMPALA ignition

The exterior lamps control has three positions:
Off:Push the control all the way in to turn off the
exterior lamps.
Parking Lamps:Pull the control out halfway to turn on
the parking lamps together with the following:
Taillamps
License Plate Lamps
Instrument Panel Lights
Headlamps:Pull the control all the way out to turn on
the headlamps together with the previously listed
lamps and lights. A warning chime will sound if you
open the driver’s door when the ignition switch is off and
the headlamps are on.
Delayed Headlamps
The delayed headlamps feature provides a period of
exterior lighting as you leave the area around your
vehicle. The feature is activated when the headlamps
are on due to the automatic headlamps control
feature described previously in this section, and when
the ignition is turned off. Your headlamps will then
remain on until the exterior lamps control is moved to
the parking lamps position or until either a 30 second or
60 second lighting period has ended.
If you turn off the ignition with the headlamps switch in
the parking lamps or headlamps position, the delayed
headlamps cycle will not occur.
To disable the delayed headlamps feature or change
the time of delay, seeVehicle Customization Settings on
page 3-91.
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Daytime Running Lamps (DRL)/
Automatic Headlamp System
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
rst sold in Canada.
A light sensor on top of the instrument panel makes the
DRL work, so be sure it isn’t covered.
The DRL system’s automatic headlamp control will
make your low-beam headlamps come on at a reduced
brightness when the following conditions are met:
The ignition is ON,
the exterior lamps control is OFF, and
the gearshift is not in PARK (P).
When the DRL are on, only your low-beam headlamps,
at a reduced level of brightness, will be on. The
headlamps, taillamps, sidemarker and other lamps won’t
be on. Your instrument panel and cluster won’t be lit
up either.When it’s dark enough outside, your low-beam
headlamps will turn off and the headlamps and parking
lamps will turn on. The other lamps that come on
with your headlamps will also come on.
When it’s bright enough outside, your headlamps will go
off and your DRL will come on.
As with any vehicle, you should turn on the regular
headlamp system when you need it.
Fog Lamps
If your vehicle is equipped
with fog lamps, the button
is located on the
instrument panel next to
the exterior lamps
control wheel to the left of
the steering column.
Your ignition must be in ON for the fog lamps to
illuminate.
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To turn the fog lamps on, press the FOG button. A light
will come on in the button to let you know that the
fog lamps are on. Press the FOG button again to turn
the fog lamps off.
The ignition must be ON and the parking lamps must be
on for your fog lamps to work.
The fog lamps will go off while you change to high-beam
headlamps.
Instrument Panel Brightness
The control for the instrument panel lights is located on
the exterior lamps control. Your parking lamps must
be on for this feature to work. Turn the control clockwise
to brighten the lights or counterclockwise to dim them.
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 turning the exterior lamps control
all the way clockwise.
Dome Lamp
If your vehicle has this feature, the dome lamp will
come on when you open a door. You can also turn this
lamp on by turning the exterior lamps control clockwise
as far as it will go. Vehicles that have the optional
sunroof do not have a dome lamp.
Entry Lighting
Your vehicle may be equipped with courtesy lamps that
will come on and stay on for a set time whenever
you press UNLOCK on the remote keyless entry
transmitter (if equipped).
If you open a door, the lamps will stay on while it’s open
and then turn off automatically about 25 seconds after
you close it. If you press UNLOCK and don’t open
a door, the lamps will turn off after about 40 seconds.
Entry lighting includes a feature called theater dimming.
With theater dimming, the lamps don’t just turn off at the
end of the delay time. Instead, they slowly dim after the
delay time until they go out. The delay time is canceled if
you turn the ignition key to ON or press the power door
lock switch. The lamps will dim right away.
When the ignition is on, illuminated entry is inactive,
which means the courtesy lamps won’t come on unless
a door is opened.
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Delayed Entry Lighting
Delayed entry lighting illuminates the interior for a
period of time after all the doors have been closed.
The ignition must be off for delayed entry lighting
to work. Immediately after all the doors have been
closed, the delayed entry lighting feature will continue to
work until one of the following occurs:
The ignition is ON,
the doors are locked, or
an illumination period of 25 seconds has elapsed.
If during the illumination period a door is opened,
the timed illumination period will be canceled and the
interior lamps will remain on because a door is open.
Delayed Exit Lighting
This feature illuminates the interior for a period of time
after the key is removed from the ignition.
The ignition must be off for delayed exit lighting to work.
When the key is removed, interior illumination will
activate and remain on until one of the following occurs:
The ignition is ON,
the power door locks are activated, or
an illumination period of 25 seconds has elapsed.If during the illumination period a door is opened, the
timed illumination period will be canceled and the interior
lamps will remain on because a door is open.
Parade Dimming
The instrument panel has an added feature called
parade mode. This feature prohibits the dimming of your
instrument panel displays during the daylight while
the headlamps are on so that you’ll still be able to see
the displays.
Reading Lamps
Your vehicle may be equipped with reading lamps that
are located on the assist handles in the headliner.
These lamps and the interior courtesy lamps come on
when any door is opened. Press the lens to turn them on
and off.
3-18

Battery Run-Down Protection
Your vehicle has a feature to help prevent you from
draining the battery in case you accidentally leave on the
interior courtesy lamps, reading/map lamps, visor
vanity lamps or trunk lamp. If you leave any of these
lamps on, they will automatically turn off after
10 minutes, if the ignition is off. The lamps won’t come
back on again until you do the following:
Turn the ignition on, or
turn the exterior lamps control off, then on again.
If your vehicle has less than 15 miles (25 km) on
the odometer, the battery saver will turn off the lamps
after only three minutes.
Battery rundown protection will also work if the
headlamps are left on. After having been left on for
10 minutes, the headlamps and the parking lamps will
ash three times. They will remain on for one more
minute before turning off automatically.
Accessory Power Outlets
Your vehicle has a
12-volt outlet which can
be used to plug in
electrical equipment such
as a cellular telephone,
a compact disc player, etc.
On vehicles with a center console, it is located in the
console. Lift the cover to access the outlet. Close
the cover when not using the outlet.
On vehicles without a center console, it is located in the
ashtray drawer to the right of the ashtray. Remove
the rubber cover to access the outlet. When not using
the outlet, make sure the cover is on it.
Notice:Leaving electrical equipment on for
extended periods will drain the battery. Always turn
off electrical equipment when not in use and do
not plug in equipment that exceeds the maximum
amperage rating.Console Version shown
3-19

Passenger Compartment Air Filter
Your vehicle may be equipped with a passenger
compartment particulate air lter. It is located
underneath the hood just below the windshield wiper
arm on the passenger’s side of the vehicle, underneath
the air inlet grille.
The lter traps most of the pollen from air entering the
Climate Control System. Like your engine’s air
cleaner/lter, it may need to be changed periodically to
ensure system performance. For information on how
often to change the passenger compartment air
lter, seeScheduled Maintenance on page 6-4.
To change the passenger compartment air lter, use the
following steps:
1. Turn off the ignition when the windshield wipers are
in the up position.
2. Raise the vehicle hood.
3. Disconnect the windshield washer pump hose from
the fender rail and air inlet grille.
4. Peel back the hood weatherstrip from the
passenger’s side of the vehicle halfway to center.5. Remove the air inlet grille retainers.
6. Remove the air inlet grille.
7. Remove the old passenger compartment air lter.
8. Reverse the steps to install the new air lter.
For the type of lter to use, seeNormal Maintenance
Replacement Parts on page 6-13.
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Airbag Readiness Light
There is an airbag readiness light on the instrument
panel, which shows the airbag symbol. The system
checks the airbag’s electrical system for malfunctions.
The light tells you if there is an electrical problem.
The system check includes the airbag sensors, the
airbag modules, the wiring and the crash sensing and
diagnostic module. For more information on the
airbag system, seeAirbag System on page 1-49.
This light will come on
when you start your
vehicle, and it will ash for
a few seconds. Then
the light should go out.
This means the system
is ready.
If the airbag readiness light stays on after you start the
vehicle or comes on when you are driving, your
airbag system may not work properly. Have your vehicle
serviced right away.{CAUTION:
If the airbag readiness light stays on after you
start your vehicle, it means the airbag system
may not be working properly. The airbags in
your vehicle may not inate in a crash, or they
could even inate without a crash. To help
avoid injury to yourself or others, have your
vehicle serviced right away if the airbag
readiness light stays on after you start your
vehicle.
The airbag readiness light should ash for a few
seconds when you turn the ignition key to ON. If the
light doesn’t come on then, have it xed so it will
be ready to warn you if there is a problem.
3-31

Brake System Warning Light
Your vehicle’s hydraulic brake system is divided into
two parts. If one part isn’t working, the other part can still
work and stop you. For good braking, though, you
need both parts working well.
If the warning light comes on, there is a brake problem.
The LOW BRAKE FLUID message in the message
center will also appear when there is a brake problem.
SeeLow Brake Fluid Warning Message on page 3-47.
Have your brake system inspected right away.
This light should come on briey when you turn the
ignition key to ON. If it doesn’t come on then, have it
xed so it will be ready to warn you if there’s a problem.When the ignition is on, the brake system warning light
will also come on when you set your parking brake.
The light will stay on if your parking brake doesn’t
release fully. If it stays on after your parking brake is
fully released, it means you have a brake problem.
If the light comes on while you are driving, pull off the
road and stop carefully. You may notice that the pedal is
harder to push. Or, the pedal may go closer to the
oor. It may take longer to stop. If the light is still on,
have the vehicle towed for service. SeeBrake System
Warning Light on page 3-32andTowing Your Vehicle on
page 4-35.
{CAUTION:
Your brake system may not be working
properly if the brake system warning light is
on. Driving with the brake system warning light
on can lead to an accident. If the light is still
on after you have pulled off the road and
stopped carefully, have the vehicle towed for
service. United States
Canada
3-32