1999 CADILLAC DEVILLE ignition

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2-68
When one of the warning lights comes on and stays on
when you are driving, or when one of the gages shows
there may be a problem, check the section that tells you
what to do about it. Please follow this manual's advice.
Waiting to do repairs can be costly
-- and even
dangerous. So please get to know your warning lights
and gages. They're a big help.
Your vehicle also has a Driver Information Center that
works along with the warning lights and gages. See
ªDriver Information Centerº in the Index.
Safety Belt Reminder Light
When the key is turned to RUN or START, a chime will
come on for about eight seconds to remind people to
fasten their safety belts, unless the driver's safety belt is
already buckled.
The safety belt light will
also come on and stay on
for about 20 seconds,
then it will flash for
about 70 seconds.
If the driver's belt is already buckled, neither the chime
nor the light will come on.
Air Bag Readiness Light
There is an air bag readiness light on the instrument
panel, which shows AIR BAG. The system checks the
air bag's electrical system for malfunctions. The light
tells you if there is an electrical problem. The system
check includes the air bag sensors, the air bag modules,
the wiring and the crash sensing and diagnostic module.
For more information on the air bag system, see ªAir
Bagº in the Index.
This light will come on
when you start your engine,
and it will flash for a few
seconds. Then the light
should go out. This means
the system is ready.
If the air bag readiness light stays on after you start the
engine or comes on when you are driving, your air bag
system may not work properly. Have your vehicle
serviced right away.
The air bag readiness light should flash for a few
seconds when you turn the ignition key to RUN. If the
light doesn't come on then, have it fixed so it will be
ready to warn you if there is a problem.

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2-69 Charging System Light
When you turn the
key to RUN, this light will
come on briefly to show
that the generator and
battery charging systems
are working.
If this light stays on, you need service and you should
take your vehicle to the dealer at once. To save your
battery until you get there, turn off all accessories.
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.
Have your brake system inspected right away.
This light should come
on briefly when you turn
the ignition key to RUN. If
it doesn't come on then,
have it fixed so it will be
ready to warn you if there's
a 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 floor.
It may take longer to stop. If the light is still on, have the
vehicle towed for service. (See ªTowing Your Vehicleº
in the Index.)

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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've
pulled off the road and stopped carefully, have
the vehicle towed for service.
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.
Parking Brake Indicator Light
This light comes on when
the parking brake is set, and
it will stay on if the parking
brake does not fully release.
If you try to drive off with
the parking brake set, this
light will remain on.
This light should also come on briefly as you start the
vehicle. If it doesn't, have the light fixed so it will be
ready to remind you if the parking brake has not fully
released. For more information on how to release the
parking brake, see ªParking Brakeº in the Index.

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2-71 Anti-Lock Brake System Warning Light
Digital Cluster Analog Cluster
With the anti
-lock brake system, the light(s) will come
on when you start your engine and may stay on for
several seconds. That's normal.If the light stays on, turn the ignition to OFF. Or, if the
light comes on when you're 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're driving, your vehicle needs
service. If the regular brake system warning light isn't
on, you still have brakes, but you don't have anti
-lock
brakes. If the regular brake system warning light is also
on, you don't have anti
-lock brakes and there's a
problem with your regular brakes. See ªBrake System
Warning Lightº earlier in this section.
The anti
-lock brake system warning light should come
on briefly when you turn the ignition key to RUN. If the
light doesn't come on then, have it fixed so it will be
ready to warn you if there is a problem.

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2-73 Engine Coolant Temperature Gage
This gage shows the engine
coolant temperature. If
the gage pointer moves into
the red area, the engine is
too hot.
Analog Cluster
That reading means the same thing as the warning
light
-- the engine coolant has overheated. See
ªEngine Overheatingº in the Index.
Malfunction Indicator Lamp
(Service Engine Soon 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 SERVICE ENGINE SOON light
comes on and a chime will sound 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.

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NOTICE:
If you keep driving your vehicle with this light
on, after a while, your emission controls may not
work as well, your fuel economy may not be as
good and your engine may not run as smoothly.
This could lead to costly repairs that may not be
covered by your warranty.
NOTICE:
Modifications made to the engine, transaxle,
exhaust or fuel system of your vehicle or the
replacement of the original tires with other than
those of the same Tire Performance Criteria
(TPC) can affect your vehicle's emission controls
and may cause the light to come on.
Modifications to these systems could lead to
costly repairs not covered by your warranty. This
may also result in a failure to pass a required
Emission Inspection/Maintenance test.
This light should come on, as a check to show you it is
working, when the ignition is on and the engine is not
running. If the light doesn't come on, have it repaired.
This light will also come on during a malfunction in one
of two ways:

Light Flashing
-- A misfire condition has been
detected. A misfire increases vehicle emissions and
may damage the emission control system on your
vehicle. Dealer or qualified service center diagnosis
and service may be required.

Light On Steady
-- An emission control system
malfunction has been detected on your vehicle.
Dealer or qualified service center diagnosis and
service may be required.
If the Light Is Flashing
The following may prevent more serious damage to
your vehicle:

Reducing vehicle speed.

Avoiding hard accelerations.

Avoiding steep uphill grades.

If you are towing a trailer, reduce the amount of
cargo being hauled as soon as it is possible.

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2-77 Fuel Gage
Digital Cluster Analog Cluster
The fuel gage shows approximately how much fuel is in
the tank. It works only when the ignition is in RUN.On the digital cluster, if the fuel level is within
approximately 2 gallons (7.6 L) of being full, the letter
ªFº is shown. If the fuel supply gets down to
approximately 3 gallons (11.4 L), the number ª3º will
be displayed on the fuel gage, and the FUEL LEVEL
LOW message will appear on the Driver Information
Center (DIC). (On the analog fuel gage, the FUEL
LEVEL LOW message will also appear.) If the fuel
level is less than approximately 3 gallons (11.4 L) from
being empty, the letter ªEº is shown.
Here are a few concerns some owners have had about
the fuel gage. All of these situations are normal and do
not indicate that anything is wrong with the fuel gage:

At the gas station the gas pump shuts off before the
gage reads F.

It takes more (or less) gas to fill the tank than the
gage said. For example, the gage read 8 GALLONS
(30 L), but it took more (or less) than the tank's
remaining capacity to fill it.

The gage may change when you turn, stop or
speed up.

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TIMER: This feature is like a stopwatch, in that
you can clock the time it takes to get from one point
to another.
To operate, press the TIMER button until TIMER OFF
00:00:00 is displayed on the DIC. Each of the fields for
the hours, minutes and seconds are two numeric digits.
Once TIMER OFF 00:00:00 is displayed, press the
TIMER button to start the timing feature. Press the
TIMER button again to stop it. If you will be starting and
stopping your vehicle
-- during a trip for instance -- the
TIMER feature will automatically start timing where it left
off when you last stopped. To reset it, press and hold the
RESET NO button until the display reads TIMER
00:00:00. Press the INFORMATION SKIP button to
exit from the TIMER function.
RESET NO: Pressing this button will reset the MPG
AVG, GAL FUEL USED, AVG MPH and OIL LIFE
LEFT. Pressing RESET NO when a non
-resettable
display appears will cause a ªrecallº mode to occur.
When this happens, all DIC warning messages that have
been displayed since the ignition key was turned to
RUN will redisplay. If no messages were displayed, a
MONITORED SYSTEMS OK message will appear.MPG AVG (Reset): Press the INFORMATION SKIP
button to display the MPG AVG (Average Fuel
Economy), then press and hold the RESET NO
button until 0.0 MPG AVG is displayed.
GAL FUEL USED (Reset): Press the INFORMATION
SKIP button to display the GAL FUEL USED on the
DIC, then press and hold the RESET NO button
until 0.0 GAL FUEL USED is displayed.
AVG MPH (Reset): Press the INFORMATION
SKIP button to display the AVG MPH (Average Speed),
then press and hold the RESET NO button until
0.0 AVG MPH is displayed.
OIL LIFE LEFT (Reset): Press the INFORMATION
SKIP button to display the OIL LIFE LEFT, then press
and hold the RESET NO button until 100% OIL LIFE
LEFT is displayed. (This only needs to be reset after you
have had the oil changed.)