1998 CADILLAC DEVILLE service

Downloaded from www.Manualslib.com manuals search engine When one of the warningalights comes on and stays on
when you
are driving, or when one of @e gages shows
there.may be a problem, check the section that tells you
, what to do aboyt 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
“Driver Information Center” later in
this section.
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.
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 ybu
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 di-agnostic module.
For more information on the
air bag system, see “Air
Bag” 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.
AIR BAG
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.
If the air bag readiness light stays on after you stat :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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i

Downloaded from www.Manualslib.com manuals search engine Charging System Indicator Light
~ -
-1 When you turn the
key to
RUN, this light will
come on briefly to show
that the generator and
battery charging systems are working.
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.
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. 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 “Towing
Your Vehicle”
in the Index.)
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Downloaded from www.Manualslib.com manuals search engine 1
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 “Parking Brake” earlier in
this section.
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Downloaded from www.Manualslib.com manuals search engine Anti-Lock Brake System Warning Light
ANTI -
LOCK
Digital Cluster
LOCK
ANT’- (e)
Analog Cluster
If the light stays on, twn 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 waming 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 “Brake System
Warning Light” earlier in
this section.
With the anti-lock brake system, the light(s) will come The
anti-lock brake system warning light should come
on when you
start your engine and may stay on for on
briefly when you turn the ignition key to RUN. If the
several seconds. That’s normal. 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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Downloaded from www.Manualslib.com manuals search engine Traction Control System Warning Light
This warning light should
come on briefly as you start
the engine.
If the warning
light doesn’t come on then,
ready to warn you if there’s TRACT^ 0 N
CONTROL have it fixed so it will be
I’ a problem.
i If it stays on, or comes on when you’re driving, there
i may be a problem with your traction control system and
your vehicle may need service. When this warning light is on, the system will not
limit wheel spin. Adjust your
driving accordingly.
The traction control system warning light may come on
for the following reasons:
1 If there’s a brake system problem that is specifically
related to traction control, the traction control system
will
turn off and the warning light will come on.
I 1 0 ‘If the traction control system is affected by an
engine-related problem, the system will turn
off and
the warning light will come on.
If the traction control system warning light comes on
and
stays on for an extended period of time when the
system
is turned on, your vehicle needs service.
Engine Coolant Temperature Warning Light
This light tells you that your
engine has overheated. You
should stop your vehicle
’ ‘3
and.turn the engine off as
soon as’possible.
A warning
chime should
also sound if
this light comes on.
As a check,
the light should come on for a few seconds
when you start your engine.
Ih the section “Problems on
the Road,” this manual explains what to do. See “Engine
Overheating”
in the Index.

Downloaded from www.Manualslib.com manuals search engine Engine Coolant Temperature Gage
Analog Cluster
This gage shows the
engine coolant
temperature. If the gage
pointer moves into the red area, the engine is too hot.
That reading means the same thing as the warning
light
-- the engine coolant
has overheated.
In the
section “Problems on the
Road,” this manual
explains what to do. See
“Engine Overheating” 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. SERVICE
ENGINE
SOON
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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Downloaded from www.Manualslib.com manuals search engine 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.
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:
0 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.
0 If you are towing a trailer, reduce the amount of
cargo being hauled
as soon as it is possible.
If the light stops flashing and remains on steady, see “If
the Light
Is On Steady’’ following.
If the light continues to flash, when it is safe to do
so,
stop the vehicle. Find a safe place to park your vehicle.
Turn the key off, wait at least
10 seconds and restart the
engine. If the light remains
on steady, see “If the Light
Is On Steady’’ following. If the light is still flashing,
follow the previous steps, and drive the vehicle to your
dealer or qualified service center for service.
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Downloaded from www.Manualslib.com manuals search engine If the Light Is On Steady Have you recentIy changed brands of fuel?
You may be able to correct the emission system
malfunction by considering the following:
Did you recently put fuel into your vehicle?
If
so, reinstall the fuel cap, making sure to fully install
the cap. The diagnostic system can determine if the fuel
cap has been left
off or improperly installed. A loose or
missing fuel cap will allow fuel to evaporate into the
atmosphere.
A few driving trips with the cap properly
installed should turn the light
off.
Did you just drive through a deep puddle of water?
If so, your electrical system may be wet. The condition
will usually be corrected when the electrical system
dries out. A few driving trips should turn the light off.
Are you low on fuel?
As your engine starts to run out of fuel, your engine may
not run as efficiently as designed since small amounts of
air are sucked into the fuel line causing a misfire. The
system can detect this. Adding fuel should correct this
condition. Make sure to install the fuel cap properly.
It
will take a few driving trips to turn the light off. If
so, be sure to fuel your vehicle with quality fuel (see
“Fuel” in the Index). Poor fuel quality will cause your \
engine not to run as efficiently as designed. You may
notice this as stalling after start-up, stalling when you
put the vehicle into gear, misfiring, hesitation on
acceleration or stumbling on acceleration. (These
conditions may
go away once the engine is warmed up.)
This will be detected by the system and cause the light
to turn on.
If you experience one or more of these conditions,
change the fuel brand you use.
It will require at least one
full tank of the proper fuel to turn the light off.
If none of the above steps have made the light turn
off,
have your dealer or qualified service center check the
vehicle. Your dealer has the proper test equipment and
diagnostic tools to fix any mechanical
or electrical
problems that may have developed.
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