key battery CHEVROLET CORVETTE C8 2021 Owners Manual

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14622938) - 2021 - CRC - 9/22/20
Keys, Doors, and Windows 7
The mechanical key can be used to open the
vehicle and hatch/trunk if power to the
vehicle is lost. SeeHatch (Trunk)019.
Convertible Shown, Coupe Similar
Convertible Shown, Coupe Similar
Press the button on the side to remove the
mechanical key. Never pull the mechanical
key out without pressing the button.
This vehicle has a Keyless Access system
with pushbutton start. See Ignition Positions
0 192 for information on starting the
vehicle.
If it becomes difficult to turn the mechanical
key, inspect the mechanical key blade for
debris.
Remote Keyless Entry (RKE)
System
See Radio Frequency Statement 0316.
If there is a decrease in the remote key
operating range:
.Check the distance. The remote key may
be too far from the vehicle.
.Check the location. Other vehicles or
objects may be blocking the signal.
.Check the remote key battery. See
“Battery Replacement” later in this
section.
.If the remote key is still not working
correctly, see your dealer or a qualified
technician for service.
Remote Keyless Entry (RKE)
System Operation
The Keyless Access system allows for vehicle
entry when the remote key is within 1 m
(3 ft). See “Keyless Access Operation” later in
this section.
The remote key functions may work up to
60 m (197 ft) away from the vehicle.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14622938) - 2021 - CRC - 9/22/20
Keys, Doors, and Windows 11
4. Press ENGINE START/STOP. When theremote key is learned, the DIC display
will show that it is ready to program the
next remote key.
5. Remove the remote key from the backup location and press
KorQon the
remote key.
To program additional remote keys,
repeat Steps 3–5.
When all additional remote keys are
programmed, press and hold ENGINE
START/STOP for approximately
12 seconds to exit programming mode.
Programming without Recognized
Remote Keys
If two currently recognized remote keys are
not available, see your dealer to program
new remote keys.
Starting the Vehicle with a Low Remote
Key Battery
For improved vehicle security, the remote
key is equipped with a motion sensor. When
starting the vehicle, if the remote key has
been idle for a while, the DIC may display
KEY IN SLEEP MODE, MOVE KEY, THEN
START. Move the remote key slightly and
try starting the vehicle. If the remote key battery is weak or if there is interference
with the signal, the DIC may display NO
REMOTE DETECTED or NO REMOTE KEY WAS
DETECTED PLACE KEY IN KEY POCKET, THEN
START YOUR VEHICLE.
If this occurs, follow these steps:
1. Place the remote key in the cupholder
with the mechanical key end facing up.
2. With the vehicle in P (Park) or N (Neutral), press the brake pedal and
ENGINE START/STOP.
Replace the remote key battery as soon
as possible.
Battery Replacement
{Warning
Never allow children to play with the
remote key. The remote key contains a
small battery, which can be a choking
hazard. If swallowed, internal burns can
occur, resulting in severe injury or death.
Seek medical attention immediately if a
battery is swallowed.
{Warning
To avoid personal injury, do not touch
metal surfaces on the remote key when
it has been exposed to extreme heat.
These surfaces can be hot to the touch at
temperatures above 59 °C (138 °F).
Caution
When replacing the battery, do not touch
any of the circuitry on the remote key.
Static from your body could damage the
remote key.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14622938) - 2021 - CRC - 9/22/20
12 Keys, Doors, and Windows
Caution
Always replace the battery with the
correct type. Replacing the battery with
an incorrect type could potentially create
a risk of battery explosion. Dispose of
used batteries according to instructions
and local laws. Do not attempt to burn,
crush, or cut the used battery, and avoid
exposing the battery to environments
with extremely low air pressures or high
temperatures.
Replace the battery if the DIC displays
REPLACE BATTERY IN REMOTE KEY.
1. Press the button on the side of the remote key and pull the mechanical key
out. Never pull the mechanical key out
without pressing the button.
2. Use the mechanical key blade in the slotto remove the battery cover by hand.
3. Remove the seal by pulling on the tab toaccess the battery.
4. Remove the old battery. Do not use a metal object.
5. Insert the new battery, negative side facing down. Replace with a CR2450 or
equivalent battery.
6. Replace the seal, pushing it into the groove around the battery compartment.
7. Replace the battery cover by snapping it back into the remote key.
Remote Vehicle Start
This feature allows the engine to be started
from outside the vehicle.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Keys, Doors, and Windows 15
The passenger power door lock switch can
also be used to lock or unlock the doors.
The fuel door, hood, and hatch/trunk are
also locked and unlocked using either power
door lock switch.Convertible Shown, Coupe Similar
To open a door from the inside, press the
door unlatch button.
Loss of Vehicle Electrical Power
If the vehicle has lost battery power, open
the doors manually. From Inside the Vehicle
Pull the driver door release handle.
Pull the passenger door release handle.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Keys, Doors, and Windows 19
Emergency Hood Release Button
The underhood compartment is equipped
with a glow-in-the-dark emergency hood
release button. This button will glow
following exposure to light. Press the button
to open the hood from inside the underhood
compartment.
Closing the Hood
{Warning
Do not drive the vehicle if the hood is
not latched completely. The hood could
open fully, block your vision, and cause a
crash. You or others could be injured.
Always close the hood completely before(Continued)
Warning (Continued)
driving. When the hood is not closed, the
vehicle will not exceed 42 km/h
(26 mph). Close the hood to drive faster
than 42 km/h (26 mph).
The hood is not heavy enough to latch
under its own weight. The hood will remain
open until the striker is pushed into the
latch. Ensure the hood is fully latched before
taking the vehicle out of P (Park). 1. Before closing the hood, be sure all filler caps are on properly, and all tools are
removed.
2. Ensure that all cargo is placed away from the emergency hood release
button.
3. Pull the hood down and set the striker gently into the latch.
4. Firmly press down on the front edge of the hood until the latch clicks twice.
5. Check that the hood is flush to the fascia to ensure the hood is fully closed. Storing Your Vehicle{Warning
The emergency hood release button
inside the underhood compartment will
not function when the battery is
disconnected or depleted. To avoid
personal injury or death, always keep the
hood fully closed and latched when
storing the vehicle. If the hood is not
latched, a person could climb into the
underhood compartment and
inadvertently close the hood. People
should never climb inside the underhood
compartment. Never shut the hood when
a person is inside.
See “Opening The Hood When There Is No
Electrical Power,” earlier in this section.
Hatch (Trunk)
{Warning
Components under the hatch, hatch
vents, and glass can get hot from running
the engine. To help avoid the risk of
burning unprotected skin, never touch
(Continued)

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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30 Keys, Doors, and Windows
Briefly press or pull the window switch in
the same direction to stop the window
express movement.
Window Automatic Reversal System
The express-close feature will reverse
window movement if it comes in contact
with an object. Extreme cold or ice could
cause the window to auto-reverse. The
window will operate normally after the
object or condition is removed.
Automatic Reversal System Override
{Warning
If automatic reversal system override is
active, the window will not reverse
automatically. You or others could be
injured and the window could be
damaged. Before using automatic reversal
system override, make sure that all
people and obstructions are clear of the
window path.
Override the automatic reversal system by
releasing, then pulling and holding the
window switch after an automatic reversal.
Programming the Power Windows
Programming may be necessary if the
vehicle battery has been disconnected or
discharged. If the window will not
express-close, program each express-close
window: 1. Close all doors.
2. Turn the ignition on or to ACC/ ACCESSORY.
3. If equipped, ensure the convertible top is fully closed.
4. Partially open the window to be programmed. Then close it and continue
to pull the switch briefly after the
window has fully closed.
5. Open the window and continue to press the switch briefly after the window has
fully opened.
Window Operation with Convertible Top
Windows lower when the convertible top is
lowered or raised. See Convertible Top034.
Remote Window Operation
If equipped, this feature allows the side
windows to be opened remotely. If enabled
in vehicle personalization, press and hold
K
on the remote key. See Vehicle
Personalization 097.
Window Indexing
When fully closed, indexing automatically
lowers the window a small amount when
the door is opened. When the door is
closed, the window will raise to its previous
position. If either window does not index
properly, it could be due to loss of power.
Before seeing your dealer for service,
program the power windows.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Keys, Doors, and Windows 35
{Warning
While opening or closing the convertible
top, people can be injured by the moving
parts of the tonneau cover or convertible
top. Maintain visual contact with the top
while it is being operated.
Caution
Follow these guidelines when operating
the convertible top or damage can occur:
.Remove all items from the roof, trunk
lid, or tonneau cover before operating.
.Remove all objects that may contact
the convertible top when it is
operated.
.Do not leave the vehicle with the
convertible top open.
.Do not exceed 50 km/h (31 mph) until
the top has completely closed or
opened.
.Do not open or close the top while
driving in high wind conditions.
(Continued)
Caution (Continued)
.Do not operate the convertible top
multiple times in a short period of
time without starting the engine to
avoid draining the vehicle battery.
.Only store the vehicle with the top
fully closed.
Opening the Convertible Top —Driver Door
Switch
1. Ensure the roof and tonneau cover are clear of any objects.
2. The trunk must be closed.
3. Start the vehicle or place it in ACC/ ACCESSORY.
4. When possible, operate the convertible top when the vehicle is stopped. The top
can be operated while driving below
50 km/h (31 mph) and will stop if that
speed is exceeded. The top operation will
take approximately 17 seconds. Make
sure the top operation can be completed
before that speed is reached.
5. Press and holdM. The windows will
automatically lower.
6. After the convertible top is completely open, a chime sounds and a Driver
Information Center (DIC) message
displays. Release the switch.
If the radio is on, the sound may be muted
for a brief time to automatically adjust the
audio after the top is opened.
Opening the Convertible Top —Remote Key
1. Make sure the vehicle is in P (Park).
2. The trunk must be closed.
3. Keep visual contact with the vehicle. Press and release
Kon the remote key
and then quickly press and hold
M.

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Keys, Doors, and Windows 37
.If the top has recently been opened and
closed repeatedly, it will be temporarily
disabled. A DIC message displays. Normal
operation will be restored within
10 minutes after the system has cooled.
.If the vehicle battery is low, the top
operation may be disabled. Try to start
the vehicle. A DIC message displays.
.If the battery has recently been
reconnected or if the vehicle has been
jump started, the top may not operate
until the power windows have been
programmed. Complete the power
window programming procedure. See
Power Windows029.
Other features may be affected while
operating the convertible top:
.If you start the vehicle while using the
remote key to open the convertible top,
the convertible top will halt the motion.
After starting the vehicle, use the
convertible top switch inside the vehicle
to continue the top motion.
.The windows cannot close while the top
is moving.
.When driving with the top not fully
secured, chimes can be heard above
50 km/h (31 mph).
.The Rear Camera Mirror will not work on the
convertible with the top down. Use
the tab to switch to standard mirror
display.
If the vehicle battery has been disconnected
and reconnected, if the fuses were pulled or
replaced, or if a jump start was performed, a
message indicating the top is not secure
may display. Press and release
Kand then
quickly press and hold
Mon the remote
key, or press and hold
Mon the driver
door switch to open the top, or pull and
hold
Mon the driver door switch to close
the top until this message clears.
Partial Top Cycling
If the convertible top operation is stopped
before completion, the top will temporarily
hold its position. Over time, the tonneau
may drift to a near closed position. Opening the Tonneau Cover
—Engine Access
{Warning
When opening or closing the tonneau
cover, people can be injured by the
moving parts of the tonneau cover.
Maintain visual contact with the tonneau
cover when it is in motion and keep
hands and objects away from the moving
parts.
To open the tonneau cover and access the
engine: 1. Make sure the vehicle is in P (Park).
2. Ensure the tonneau cover is clear of any objects.
3. The trunk and convertible top must be closed.
4. Keep visual contact with the vehicle. Press and release
Qon the remote key
and then quickly press and hold
M.
A chime will sound, a DIC message will
display, and the turn signals will
flash once.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Lighting 109
.The ignition is switched off.
The engine compartment lamp turns off
after all doors are closed.
If any door or the engine compartment
hatch/trunk remains open, while the vehicle
is off, a battery saver timer will turn the
lamp off after about 10 minutes.
Lighting Features
Entry Lighting
Some exterior lamps turn on briefly at
night, or in areas with limited lighting,
when
Kis pressed on the remote key. After
about 30 seconds the exterior lamps
turn off.
When any door is opened or remote unlock
pressed, all interior lights turn on and then
interior lamps dim to off after
approximately 20 seconds of door closure.
When the driver door is opened, all interior
lights, Driver Information Center (DIC) lights,
and door pocket lights turn on and then the
dome and remaining interior lamps dim to
off. Entry lighting can be disabled manually by turning the ignition to on or ACC/
ACCESSORY, or by pressing
Qon the
remote key.
The entry lighting feature for exterior
lighting can be changed. See “Vehicle
Locator Lights” underVehicle Personalization
0 97.
Exit Lighting
Some exterior lamps come on at night, or in
areas with limited lighting, when the driver
door is opened after the ignition is turned
off. The dome lamp comes on after the
ignition is turned off. The exterior lamps and
dome lamp remain on after the door is
closed for a set amount of time, then
automatically turn off.
The exterior lamps turn off immediately by
turning the exterior lamp control off.
The exit lighting feature for exterior lighting
can be changed. See Vehicle Personalization
0 97.
Battery Power Protection
This feature helps prevent the battery from
being drained if any interior lamps are
accidentally left on. If any of these lamps
are left on, they automatically turn off after
10 minutes, if the ignition is off. The lamps
will not come back on again until one of the
following occurs:
.The ignition is turned on.
.The doors are closed and then re-opened.
Exterior Lighting Battery Saver
The exterior lamps turn off about 10 minutes
after the ignition is turned off, if the parking
lamps or headlamps have been manually
left on. This protects against draining the
battery. To restart the 10-minute timer, turn
the exterior lamp control to the off position
and then back to the parking lamp or
headlamp position.
To keep the lamps on for more than
10 minutes, the ignition must be on or in
ACC/ACCESSORY.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Driving and Operating 181
prevent the brake master cylinder from
pressurizing the hydraulic system during its
automated self diagnostic tests that can
possibly occur when a door is opened or the
remote key is present.
{Caution
To avoid personal injury and/or vehicle
damage, always disconnect the battery
before performing service work on the
hydraulic brake system. Bleeding the
brake system with the battery connected
can lead to excessive pressurization of
the system during automatic diagnostic
tests or diagnosis of a leak or air in the
braking system. A Diagnostic Trouble
Code (DTC) may set and vehicle speed
may be limited.
Brake Fluid
Replace existing brake fluid with a qualified
high performance DOT 4 brake fluid from a
sealed container. Brake fluid with a dry
boiling point >310 °C (590 °F) is qualified.
If high performance brake fluid is used,
replace it with GM approved brake fluid
before driving on public roads. If high
performance brake fluid is in the vehicle and
the age of the brake fluid is over a month old or unknown, replace the brake fluid
before track events and competitive driving.
Do not use silicone or DOT-5 brake fluids.
Check the fluid level before each competitive
driving event.
Brake System Flushing & Bleeding
The J55 brake system requires specific
processes for bleeding and fluid flushing.
These can be found in the service manual.
Properly bleeding the brake system is
required for proper operation of the
hydraulic brake system.
Brake Leak Detection
The hydraulic braking system has advanced
diagnostic capability to help detect hydraulic
leaks, trapped air, and other performance
issues. These diagnostics are active when
the hydraulic system is powered. In order to
avoid inadvertently setting a leak Diagnostic
Trouble Code (DTC), disconnect the battery
before servicing the brake system.
If the vehicle sets a DTC related to a brake
system leak, the Brake System Warning
Light will come on and vehicle speed may
be limited to 100 kph (62 mph). Any time a
leak DTC is set, the vehicle should be
inspected carefully for evidence of a leak
and should be repaired immediately. See
your dealer.
Brake Fade Warning Assist
The Brake Fade Warning Assist system
monitors the performance of the brake
system. If the system detects brake fade,
or if the brake fluid is near the boiling point,
the driver will be alerted.
The Brake Fade Warning Assist system is
designed for use with the factory-installed
brake pads or GM-approved replacement
pads. If the brake pads on the vehicle need
to be replaced, use GM-approved brake pads.
If this is not done, the brake fade warning
system may not function properly.
Stage 1 :
The Driver Information Center (DIC)
displays a “Reduce Braking to Avoid
Overheating” message and brake pedal
effort and travel is increased. When the
message displays, the driver should decrease
brake pedal pressure.
Stage 2 : The Driver Information Center
(DIC) displays a “Brakes Overheated Service
Now” message that the brake fluid
temperature is excessive and is about to
boil. The system increases brake pedal effort
and travel, and will also limit vehicle speed.