service engine soon CADILLAC SEVILLE 1996 4.G Owners Manual

Downloaded from www.Manualslib.com manuals search engine Anti-Lock Brake System Warning Light
t-
LOCK
ANT’- (e)
ANTI -
LOCK
With the anti-lock brake system, one of these lights 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 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 Cadillac 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 “Brake System Warning Light”
earlier in this part.
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.
2-69

Downloaded from www.Manualslib.com manuals search engine Engine Coolant Temperature Warning
Light
This red light tells you that
the engine has overheated.
You should stop the car 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. 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)
SERVICE
ENGINE
SOON
Your Cadillac is equipped
with a computer which
monitors operation of the
fuel, ignition and emission
control systems.
This system is called OBD
I1 (.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. (In Canada,
OBD I1 is replaced by
Enhanced Diagnostics.) The SERVICE ENGINE SOON
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, which
may prevent more serious damage to your vehicle. This
system is also designed
to assist your service technician
in correctly diagnosing any malfunction.
2-71

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 is 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:
0 Reduce vehicle speed.
0 Avoid hard accelerations.
Avoid steep uphill grades.
If 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. Put your vehicle in PARK (P). 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.
2-72

Downloaded from www.Manualslib.com manuals search engine Oil Pressure Light
This light tells you if there
could be a problem with
your engine oil pressure.
The light
goes on when you turn your key to RUN or
START.
It goes off once you start your engine. That’s a
check to be sure the light works. If it doesn’t come on,
be sure to have it fixed so it will be there to warn you if
something goes wrong.
When the light
comes on and stays on, it means that
oil isn’t flowing through your engine properly. You
could be low on oil and you might have some other
system problem.
A CAUTION:
Don’t keep driving if the oil pressure is low. If
you do, your engine can become so hot that it
catches fire. You or others could be burned.
Check your oil
as soon as possible and have
your vehicle serviced.
I NOTICE:
Damage to your engine from neglected oil
problems can be costly and is not covered by
your warranty.

Downloaded from www.Manualslib.com manuals search engine P
c
BATTERY NO CHARGE - 07: This message will
appear if the battery is not being charged. Have the
electrical system checked by your Cadillac dealership
at your earliest convenience.
BATTERY VOLTS HIGH - 08: This message shows
that the electrical charging system is overcharging (more
than 16 volts).
To avoid being stranded, have the
electrical system checked by your Cadillac dealership.
You can reduce the charging overload by using the
accessories. Turn on the lamps and radio, set the climate
control on
AUTO and the fan speed on HI, and turn the
rear window defogger on. You can monitor battery
voltage on the
DIC by pressing the INFORMATION
button. The normal range
is 11.5 to 15.5 volts when the
engine is running.
BATTERY VOLTS LOW - 06: This message will
appear when the electrical system
‘is charging less than
10 volts or if the battery has been drained. If this message
appears immediately after starting,
it is possible that the
generator can still recharge the battery. The battery should
recharge after driving a few
miles and the message should
go out.
Lf this message appears while driving or after
starting your vehicle and stays on, have it checked
immediately to determine the cause
of this problem. To
help the generator recharge the battery quickly you can
reduce the load on the electrical system by turning
off the
accessories.
You can monitor battery voltage on the DIC
by pressing the INFORMA’TION button. The normal range
is 11.5 to
15.5 volts.
BRAKE VACUUM PROBLEM - 108: Thecircuit in
the brake booster vacuum has shorted
or is loose when
this message appears. Your vehicle
may lose power
brakes but you will still have the
use of manual brakes.
The power brakes will not be affected
if the problem is
caused by a failed sensor. Have your vehicle serviced
immediately at your Cadillac dealership.
CHANGE ENGINE OIL - 82: This means that the life
of the engine oil has expired and it should be changed
within
200 miles. See “Engine Oil” and “Filter
Recommendations” in the Maintenance Schedule. After
an oil change, the Oil Life Indicator must be reset. See
“Oil Life Indicator” in the Index
on how to reset it.
CHANGE TRANS FLUID - 47: This message will
appear when it is time
to replace the transaxle fluid
(system has determined that the transaxle fluid has
reached
0%). See the Maintenance Schedule booklet for
the proper fluid and change intervals.
CHECK BRAKE FLUID LEVEL - 37: This message
will display if the ignition is in the
RUN position to
inform the driver that the brake fluid level is low. Check
the brake reservoir level and add
fluid as needed. Have
the brake system serviced by a Cadillac technician as
soon
as possible. If the brake warning light is on, follow
the directions in that part.
2-81

Downloaded from www.Manualslib.com manuals search engine CHECK COOLANT LEVEL - 02: This message will
appear when there is a low level of engine coolant. Have
the cooling system serviced by a Cadillac technician
as
soon as possible.
CHECK FUEL GAGE - 39: This message will appear
when the fuel supply is less than four gallons
(15.2 L)
and the display is turned off (digital clusters only).
CHECK OIL LEVEL - 36: For correct operation of
the low oil sensing system, your vehicle should be on a
level surface.
A false CHECK OIL LEVEL message
may appear if the vehicle
is parked on grades. The oil
level sensing system does not check for actual oil level
if the engine has been off for
a short period of time, and
the oil level is never sensed while the engine is running.
If the CHECK OIL LEVEL message appears, and your
vehicle has been parked on level ground with the engine
off
for at least 30 minutes, the oil level should be
checked by observing the
oil dipstick. Prior to checking
the oil level be sure the engine has been off for five
minutes and your vehicle
is on a level surface. Then
check the dipstick and add oil if necessary. See “Engine
Oil” in the Index.
CHECK WASHER FLUID - 25: This message will
appear
for several seconds indicating that you need
washer solvent.
CRUISE ENGAGED - 43: This message will
appear for
a few seconds when you select a speed at
which to cruise.
DOOR OPEN - 141: The passenger‘s door is open or
ajar when this message appears. The vehicle’s engine
must be running and the transaxle not
in PARK (I?) for
this message to display. A chime will also sound when
the vehicle’s speed is greater than
5 mph (8.1 km/h).
DRIVER DOOR OPEN - 140: This message
will display when the vehicle is being shifted out of
PARK (P) with the engine running to signal that the
driver’s door
is open or ajar. A chime will also sound
when the vehicle’s speed
is greater than 5 mph
(8.1 km/h).
ENGINE COOLANT HOT-IDLE ENGINE - 44:
This message will appear when the engine coolant
temperature is over
248 “F ( 1 24°C). To avoid added
strain on a hot engine, turn
off the climate control
system. Stop and allow your vehicle
to idle until it cools
down
or the message is removed. If it does not cool
down, turn off the engine and
have it serviced before
driving it again. Severe engine damage can result from
an overheated engine. See
“Engine Overheating” in
the Index.
2-82

Downloaded from www.Manualslib.com manuals search engine SERVICE AIR BAG - 83: There is a problem with the
Supplemental Inflatable Restraint (air bag) system when
this message appears. Let only a qualified technician
work on your vehicle. See your Cadillac dealership for
service
at once.
SERVICE BRAKE FLUID SWITCH - 37: A high
level
of brake fluid causes this message to display if the
ignition is
in the RUN position. Have the brake system
serviced by a Cadillac technician as soon as possible.
If
the brake warning light is on, refer to the directions
listed in that part.
SERVICE CHARGING SYSTEM - 102: This
message will display when a problem with the charging
system has been detected. Have your vehicle serviced at
your Cadillac dealership.
SERVICE ELECTRICAL SYSTEM - 106: This
message will display
if an electrical problem has
occurred within the PCM. Have
your vehicle service by
your Cadillac dealership.
SERVICE EMISSIONS SYSTEM - 104: A problem
in the emissions system has occurred when thts message
appears. Have your Cadillac dealership service your vehicle.
SERVICE ENGINE COOLING SYSTEM - 103: A
problem within the engine cooling system has been
detected when this message displays. See your Cadillac
dealership
for service.
SERVICE FUEL SYSTEM - 101: The PCM
has detected a problem within the fuel system when
this message appears. See your Cadillac dealership
for service.
SERVICE IDLE CONTROL SYSTEM - 107: A
problem with the idle control has occurred when this
message displays. Bring your vehicle
to your Cadillac
dealership for service.
SERVICE IGNITION SYSTEM - 105: This message
displays when a failure in the ignition system has been
detected. Have your vehicle serviced
by your Cadillac
dealership.
SERVICE RIDE CONTROL - 84: This message is
displayed to indicate that the suspension system is not
operating properly.
To correct this problem have your
vehicle serviced at your Cadillac dealership.
SERVICE TRANSMISSION - 100: If a problem is
detected with the transaxle,'this message will appear.
Have
your vehicle checked by your Cadillac dealership.
2-84

Downloaded from www.Manualslib.com manuals search engine When to Change Engine Oil
Your Cadillac has an Oil Life Indicator. This feature
will let you
know when to change your oil and
filter
-- usually between 3,000 miles (5 000 km) and
7,500 miles (12 500 km) since your last oil change.
Under severe conditions, the indicator may come
on
before 3,000 miles (5 000 km). Never drive your vehicle
more than
7,500 miles (12 500 km) or 12 months,
(whichever occurs first) without an oil change.
The system won’t detect dust in the oil.
So, if you
drive in a dusty area, be sure to change your oil every
3,000 miles (5 000 km) or sooner if the CHANGE
ENGINE
OIL message comes on. Remember to reset
the Oil Life Indicator when the oil has been changed.
For more information, see “Oil Life Indicator’’ in
the Index.
How to Reset the Oil Life Indicator
c”
After the oil has been changed, display the OIL LIFE
LEFT message by pressing the INFORMATION button.
Then press and hold the RESET button until the display
shows
“100.” This resets the oil life index. The message
will remain
off until the next oil change is needed. The
percentage of oil
life remaining may be checked at any time
by pressing the INFORMATION button
several
times until the OIL LIFE LEFT message appears. For
more information on the Oil Life feature, see “Oil Life
Indicator’’ in the Index.
What to Do with Used Oil
Did you know that used engine oil contains certain
elements that may be unhealthy for your skin and could
even cause cancer? Don’t let used oil stay on your
skin
for very long. Clean your skin and nails with soap and
water, or a good hand cleaner. Wash or properly throw
away clothing or rags containing used engine oil..(See
the manufacturer’s warnings about the use and disposal
of oil products.)
Used oil can be a real threat to the environment. If you
change your own oil, be sure to
drain all free-flowing oil
from the filter before disposal. Don’t ever dispose
of oil
by putting it in the trash, pouring it on the ground. into
sewers, or into streams
or bodies of water. Instead,
recycle it by taking
it to a place that collects used oil. If
you have a problem properly disposing of your used oil,
ask your dealer,
a service station or a local recycling
center for help.
6-13

Downloaded from www.Manualslib.com manuals search engine Engine Coolant
The cooling system in your vehicle is filled with new
DEX-COOL rm (orange-colored, silicate-free) engine
coolant. This coolant is designed to remain
in your
vehicle
for 5 years or 100,000 miles (1 66 000 km),
whichever occurs first.
The following explains your cooling system and how to
add coolant when it is low.
If you have a problem with
engine overheating, see “Engine Overheating” in
the Index.
A 50/50 mixture of water and the proper coolant for
your Cadillac will:
0 Give freezing protection aown to -34°F (-37°C).
0 Give boiling protection up to 265 “F (129 O C).
0 Protect against rust and corrosion.
0 Help keep the proper engine temperature.
0 Let the warning lights and gages work as they should.
NOTICE:
When adding coolant it is important that you use
DEX-COOL (orange-colored, silicate-free)
coolant meeting
GM Specification 6277M.
If dicated coolant is added to the system,
premature engine, heater core or radiator
corrosion may result. In addition, the engine
coolant
will require change sooner -- at
30,000 miles (50 000 km) or 24 months,
whichever occurs first.
What to Use
Use a mixture of one-half clean water (preferably
distilled)
and one-half DEX-COOL (orange-colored,
silicate-free) antifreeze that meets
GM Specification
6277M, which won’t damage aluminum
parts. Use
GM Engine Coolant Supplement (sealer)
(GM Part
No. 3634621) with any complete coolant change. If you
use this mixture, you don’t need to add anything else.
A special procedure is required for adding sealer; see the
Cadillac service manual.
(To order a service manual, see
“Service and Owner Publications”
in the Index.)
6-20

Downloaded from www.Manualslib.com manuals search engine i,
k
c-
What to Add
When you do need brake fluid, use only DOT-3 brake
fluid
-- such as Delco Supreme 11 @ (GM Part
No. 1052535). Use new brake fluid from a sealed
container only, and always clean the brake fluid
reservoir cap before removing it.
I A CAUTION:
With the wrong kind of fluid in your brake
system, your brakes may not work well,
or they
may not even work
at all. This could cause a
crash. Always use the proper brake fluid.
NOTICE:
0 Using the wrong fluid can badly damage brake
system parts. For example,
just a few drops of
mineral-based oil, such as engine oil, in your
brake system can damage brake system parts
so badly that they’ll have to be replaced. Don’t
let someone put in the wrong kind
of fluid.
NOTICE: (Continued)
NOTICE: (Continued)
0 If you spill brake fluid on your vehicle’s painted
surfaces, the paint finish
can be damaged. Be
careful
not to spill brake fluid on your vehicle.
If you do, wash it off immediately. See
“Appearance Care” in the Index.
Brake Wear
Your Cadillac has four-wheel disc brakes.
Disc brake pads have built-in wear indicators that make a
high-pitched
warning sound when the brake pads are
worn and new pads are needed. The sound may come and
go or be heard all the time your vehicle is moving (except
when
you are pushing on the brake pedal firmly).
1 A CAUTION:
The brake wear warning sound means that sooner
or later your brakes won’t work well. That could
lead to an accident. When you hear the brake wear
warning sound, have your vehicle serviced.