2005 CHEVROLET CORVETTE ignition

Twilight Sentinel®
Twilight Sentinel®can turn your lamps on and off for
you. A light sensor on top of the instrument panel makes
the Twilight Sentinel
®work, so be sure it is not
covered.
With Twilight Sentinel
®, you will see the following
happen:
When it is dark enough outside, the front turn signal
lamps (DRL) will go off, and the headlamps and
parking lamps will come on. The other lamps
that come on with headlamps will also come on.
When it is bright enough outside, the headlamps
will go off, and the front turn signal lamps (DRL)
will come on, as long as the exterior lamp switch is
in the AUTO position.
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 about 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 full bright
position. SeeInstrument Panel Brightness on
page 3-19.You can idle the vehicle with the lamps off, even when
it is dark outside.
After starting the vehicle, turn the exterior lamp control
band on the multifunction lever to off and then
release it. The lamps will remain off until you turn the
control band to off again.
Twilight Sentinel
®also provides exterior illumination as
you leave the vehicle. If Twilight Sentinel®has turned
on the lamps when you turn off the ignition, your lamps
will remain on until:
The exterior lamp switch is moved from off to the
parking lamp position, or
a delay time that you select has elapsed.
See “Personal Options” underDIC Vehicle
Personalization on page 3-69to select the delay time
that you want. You can also select no delay time.
If you turn off the ignition with the exterior lamp switch
in the parking lamp or headlamp position, the Twilight
Sentinel
®delay will not occur. The lamps will turn off as
soon as the switch is turned off.
As with any vehicle, you should turn on the regular
headlamp system when you need it.
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Exterior Lighting Battery Saver
If the manual parking lamps or headlamps have been
left on, the exterior lamps will turn off as soon as
the ignition is turned off or RAP is active. This protects
against draining the battery in case you have
accidentally left the headlamps or parking lamps on.
The battery saver does not work if the headlamps are
turned on after the ignition switch is turned to off.
If you need to leave the lamps on, use the exterior lamp
control to turn the lamps back on.
Instrument Panel Brightness
The knob for this feature is
located on the left side of
the instrument panel.
Turn the knob clockwise to brighten the lights or
counterclockwise to dim them. During the day, this knob
will adjust the instrument panel brightness and at
night will adjust all interior lighting.Be sure not to have this knob turned all the way down
with the lamps on during the day. Your Driver
Information Center (DIC) may not be visible.
Courtesy Lamps
When any door or the hatch/trunk lid is opened, the
interior lamps will go on unless it is bright outside.
You can also turn the courtesy lamps on and off
by pressing the instrument panel brightness knob.
Entry/Exit Lighting
With entry lighting, the interior lamps will come on when
entering the vehicle. The interior lamps will come on
for about 20 seconds when the engine is off.
You can turn exit and entry lighting off by quickly turning
the courtesy lamps on and off.
Reading Lamps
Your inside rearview mirror includes two reading lamps.
The lamps will go on when a door is opened. When
the doors are closed, each lamp can be turned on
individually by pressing the switch for that lamp.
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Battery Run-Down Protection
Your vehicle has a feature to help prevent you from
draining the battery in case the underhood lamp, vanity
mirror lamps, cargo lamps, reading lamps, console
or glove box lamps are accidentally left on. If you leave
any of these lamps on, they will automatically time-out
after about 20 minutes. To reset it, all of the above
lamps must be turned off or the ignition key on.
Head-Up Display (HUD)
{CAUTION:
If the HUD image is too bright, or too high in
your eld of view, it may take you more time to
see things you need to see when it is dark
outside. Be sure to keep the HUD image dim
and placed low in your eld of view.
If your vehicle is equipped with the Head-Up
Display (HUD), you can see some of the driver
information that appears on your instrument panel
cluster.The information may be displayed in English or metric
units and appears as an image focused out toward
the front of your vehicle. The HUD consists of the
following information:
Speedometer
Turn Signal Indicators
High-Beam Indicator Symbol
Tachometer
Oil and Temperature Gages
Shift Light (Performance SHIFT Light)
This light is used for performance driving to indicate
that the vehicle’s best performance level has
been reached to shift the transmission into the next
higher gear. The SHIFT light will display at an
engine speed of about 6,250 rpm, just prior
to reaching the engine fuel cut-off mode.
Check Gages Warning
Engine Coolant Temperature Gage
Transmission Oil Temperature Gage
Engine Oil Temperature Gage
Engine Oil Pressure Gage
G-Force Gage
3-20

2. Adjust the seat to a comfortable driving position. If
you change your seat position later, you may have
to re-adjust your HUD.
3. Press the up or down arrows to center the HUD
image in your view.
The HUD image can only be adjusted up and down,
not side-to-side.
4. Press the dimmer control downward until the HUD
image is no brighter than necessary.
To turn HUD off, press and hold the (–) button until the
HUD display turns off.
If the sun comes out or it becomes cloudy, you may
need to adjust the HUD brightness again using
the dimmer control. Polarized sunglasses could make
the HUD image harder to see.
The HUD information can be displayed in one of
six languages including English, Spanish, French,
German, Italian or Japanese. The speedometer can be
displayed in either English or Metric units.
To change the language and unit selections, see
“OPTION” underDIC Controls and Displays on
page 3-49.Clean the inside of the windshield as needed to remove
any dirt or lm that reduces the sharpness or clarity
of the HUD image.
To clean the HUD, spray household glass cleaner on a
soft, clean cloth. Wipe the HUD lens gently, then dry
it. Do not spray cleaner directly on the lens because the
cleaner could leak into the unit.
If the ignition is on and you can’t see the HUD image,
check to see if:
Something is covering the HUD unit.
The HUD dimmer control is adjusted properly.
The HUD image is adjusted to the proper height.
Ambient light is low, in the direction your vehicle
is facing.
A fuse is blown. SeeFuses and Circuit Breakers on
page 5-85.
Keep in mind that your windshield is part of the HUD
system. SeeWindshield Replacement on page 5-48.
3-23

Sensors
The solar sensor on your vehicle monitors the solar
radiation and uses the information to maintain the
selected temperature when operating in AUTO mode by
initiating needed adjustments to the temperature, the
fan speed and the air delivery system. The system may
also supply cooler air to the side of the vehicle facing
the sun. The recirculation mode will also be activated, as
necessary. Do not cover the solar sensor located on
the top of the instrument panel near the windshield
or the system will not work properly.
There is also a sensor located behind the front bumper.
This sensor reads the outside air temperature and
helps to maintain the temperature inside the vehicle.
Any cover on the front of the vehicle could give a false
reading in the temperature.
If the outside temperature goes up, the displayed
temperature will not change until:
The vehicle’s speed is above 10 mph (16 km/h)
ve minutes.
The vehicle’s speed is above 32 mph (52 km/h) for
two and a half minutes.
These delays prevent false readings. If the temperature
goes down, the outside temperature will be shown
when you start the vehicle. If it has been turned off for
less than three hours, the temperature will be recalled
from the previous vehicle operation.There is also an inside temperature sensor located to
the left of the ignition switch. The automatic climate
control system uses this sensor to receive information,
so if you block or cover it, the system will not function
properly.
Defogging and Defrosting
Fog on the inside of windows is a result of high humidity
and moisture condensing on the cool window glass.
This can be minimized if the climate control system is
used properly. There are two modes to clear fog or frost
from your windshield. Use the oor/defog mode to
clear the windows of fog or moisture and warm
the passengers. Use defrost to remove fog or frost from
the windshield more quickly. To prevent fogging on
the inside of the windows in modes other than
oor/defog and defrost, make sure the air conditioning
compressor is on and recirculation mode is off.
Press the mode button until the defog mode appears on
the display.
-(Floor/Defog):This mode directs the air equally
between the windshield and the oor outlets with a small
amount to the side window outlets. When you select
this mode, the system turns off recirculation and runs the
air-conditioning compressor unless the outside
temperature is at or below freezing. The recirculation
mode cannot be selected while in the defog mode.
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Speedometer and Odometer
Your speedometer lets you see your speed in either
miles per hour (mph) or kilometers per hour (km/h). For
more information see “Personal Options” underDIC
Vehicle Personalization on page 3-69.
To read the odometer with the ignition off, turn on the
parking lamps.
You may wonder what happens if your vehicle needs a
new odometer installed. The mileage total of the
new odometer will be set to the original miles
(kilometers) of the old odometer. See your dealer if the
odometer must be replaced in your vehicle.
Tachometer
The tachometer displays the engine speed in thousands
of revolutions per minute (rpm).
Notice:Fuel will shut off at about 6600 rpm. If you
continue to drive your vehicle at the fuel shut off
rpm, you could damage your engine. Be sure
to operate your vehicle below the fuel shut off
rpm or reduce your rpm quickly when the fuel
shuts off.
Safety Belt Reminder Light
When the ignition is turned on, a chime will be provided
for several seconds to remind people to buckle their
safety belts. The driver safety belt light will also be
provided and stay on for several seconds, then it will ash
for several more. You should buckle your seat belt.
This chime and light will be
repeated if the driver
remains unbuckled and the
vehicle is in motion.
If the driver’s belt is buckled, neither the chime nor the
light will be provided.
3-34

If the light comes on while you are driving and you have
a CHECK BRAKE FLUID message showing on the
DIC, 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.
SeeTowing Your Vehicle on page 4-36.
{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.
Anti-Lock Brake System Warning
Light
With the anti-lock brake
system, the light will come
on when your engine is
started and may stay on for
several seconds. That is
normal.
If the light stays on, turn the ignition off. Or, if the light
comes on when you are driving, stop as soon as
possible and turn the ignition off. Then start the engine
again to reset the system. If the light still stays on,
or comes on again while you are driving, your vehicle
needs service. If the regular brake system warning light
is not on, you still have brakes, but you do not have
anti-lock brakes. If the regular brake system warning
light is also on, you do not have anti-lock brakes
and there is a problem with your regular brakes. See
“SERVICE ANTILOCK BRAKES” underDIC Warnings
and Messages on page 3-54.
The anti-lock brake system warning light will come on
briey when you turn the ignition on. This is normal.
If the light does not come on then, have it xed so it will
be ready to warn you if there is a problem.
3-39

Tire Pressure Light
This light should come on
briey as you start the
engine. It will then come on
only when a at or low
tire pressure condition
exists.
SeeTire Pressure Monitor System on page 5-60for
more information.
Malfunction Indicator Lamp
Check Engine Light
Your vehicle is equipped
with a computer which
monitors operation of the
fuel, ignition, and emission
control systems.
This system is called OBD II (On-Board
Diagnostics-Second Generation) and is intended to
assure that emissions are at acceptable levels for the
life of the vehicle, helping to produce a cleaner
environment. The Check Engine light comes on to
indicate that there is a problem and service is required.
Malfunctions often will be indicated by the system
before any problem is apparent. This may prevent more
serious damage to your vehicle. This system is also
designed to assist your service technician in correctly
diagnosing any malfunction.
3-42