1999 CADILLAC DEVILLE Owners Manual

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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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2-78 Fuel Data Panel
Digital Cluster
For vehicles equipped with an analog cluster (not
shown), fuel data can be obtained by pressing the
SKIP INFO button. See ªAnalog Control Buttonsº
in the Index.
The fuel data panel tells you all you need to know about
the fuel economy and how far you can travel with the
fuel remaining.Press the AVG button to display the average mile per
gallon (AVG MPG). You can also display it in metric
units by pressing the ENG MET button.
When AVG MPG is selected, the total distance is
divided by the total fuel used.
When the INST button (Instantaneous Fuel Economy) is
selected, you will see what the fuel economy is at that
instant. The computer takes a new reading twice every
second. It will show economy up to 70 miles per gallon
(or 2 L per 100 km).
To reset the average fuel economy, press the
INFORMATION SKIP button until the AVG MPG is
displayed on the Driver Information Center (DIC). Press
and hold the RESET NO button until both the fuel data
center and DIC display reads 0.0.
The RANGE display shows how far the computer thinks
you can travel with the fuel that is in the tank. The
computer does not know what driving conditions will be
like for the rest of your trip, so the range is estimated
based on the recent fuel economy. Therefore, the range
reading may change as your driving habits change.
Going from city to highway driving may increase the
range reading.
If the range display shows LO, you should stop for fuel
as soon as possible.

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2-79
Driver Information Center (DIC)
This display gives you the status of many of your
vehicle's systems. The DIC is also used to display driver
personalization features and warning/status messages.
DIC Controls and Displays
Digital Control Buttons (DeVille and DeVille
d'Elegance Only)
DISPLAY ON/OFF: Pressing this button will turn off
the DIC, Electronic Climate Control (ECC), fuel data
center, the fuel gage, trip odometer and odometer. While
the displays are off, pressing the INFORMATION SKIP
button will only turn on the DIC. If the TRIP YES
button is pressed or the fuel level falls below four
gallons (15.2 L), all of the displays will come back on.
ENG/MET: You can change the display from English
(miles) to metric (kilometers) by pressing this button.
The same button also changes other readings (like
temperature, fuel and odometer).
TRIP YES: By using this button, you can tell how far
you've gone since you last set the trip display back to
zero. To reset, press and hold the button until zeros
appear. If your vehicle is domestic, the trip odometer
will return to zero after 999.9 miles (1 609 km). If your
vehicle is Canadian, the trip odometer will return to zero
after 1 999.9 km (1,242 miles).
INFORMATION SKIP: Pressing this button
repeatedly will display the MPG AVG, GAL FUEL
USED, AVG MPH, ENGINE RPM, BATTERY
VOLTS, COOLANT TEMP and OIL LIFE LEFT.

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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.)

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2-81
Analog Control Buttons (DeVille Concours Only)
YES TRIP RESET: By using this button, you can tell
how far you've gone since you last set the trip display
back to zero. To reset, press and hold the button until
zeros appear. If your vehicle is domestic, the trip
odometer will return to zero after 999.9 miles
(1 609 km). If your vehicle is Canadian, the trip
odometer will return to zero after 1 999.9 km
(1,242 miles).
NO INFO RESET: Pressing this button will reset the
MPG AVG, GAL FUEL USED, AVG MPH and OIL
LIFE LEFT. Pressing NO INFO RESET 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.SKIP INFO: Pressing this button repeatedly will
display the RANGE, MPG AVG, MPG INST, GAL
FUEL USED, AVG MPH, BATTERY VOLTS and
OIL LIFE LEFT.
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 NO INFO RESET button until the
display reads TIMER 00:00:00. Press the NO INFO
RESET button to exit from the TIMER function.
ENG/MET: You can change the display from English
(miles) to metric (kilometers) by pressing this button.
The same button also changes other readings (like
temperature, fuel and odometer).

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2-82
MPG AVG (Reset): Press the SKIP INFO button to
display the MPG AVG (Average Fuel Economy), then
press and hold the NO INFO RESET button until
0.0 MPG AVG is displayed.
GAL FUEL USED (Reset): Press the SKIP INFO
button to display the GAL FUEL USED on the DIC,
then press and hold the NO INFO RESET button until
0.0 GAL FUEL USED is displayed.
AVG MPH (Reset): Press the SKIP INFO button to
display the AVG MPH (Average Speed), then press and
hold the NO INFO RESET button until 0.0 AVG MPH
is displayed.
OIL LIFE LEFT (Reset): Press the SKIP INFO button
to display the OIL LIFE LEFT, then press and hold the
NO INFO RESET button until 100% OIL LIFE LEFT is
displayed. (This only needs to be reset after you have
had the oil changed.)DIC Messages
These messages will appear if there is a problem sensed
in one of your vehicle's systems. Vehicles that are first
sold in Canada will have a number after each message.
This number helps to identify the message which is only
displayed in English.
APPLY BRAKE TO SHIFT
- 46: This message will
appear if your vehicle is in PARK (P) for about 15
seconds and the brake is not pressed in. To remove this
message from the DIC display, hold the OFF and the
blue (cooler) buttons on the digital cluster control panel
for about five seconds. On the analog climate control
panel, press the OFF button (next to the MODE button)
and the down arrow on the PASS TEMP button for
about five seconds. Hold the same two buttons to
display the message again.
BATTERY NOT CHARGING
- 7: This message will
appear if the battery is not being charged. Have the
electrical system checked by your dealership at your
earliest convenience.

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BATTERY VOLTAGE HIGH - 8: 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
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 SKIP (SKIP INFO) button.
The normal range is 11.5 to 15.5 volts when the engine
is running.
BATTERY VOLTAGE LOW
- 6: 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 and may take a few hours to do
so. Consider using an auxiliary charger to boost the
battery after returning home or to a final destination. (Be
sure to follow the manufacturer's instructions when
recharging the battery.)If 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 INFORMATION SKIP (SKIP INFO)
button. The normal range is 11.5 to 15.5 volts.
BRAKE VACUUM PROBLEM
-108: The circuit 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 dealership.
CHANGE ENGINE OIL
- 82: This means that the life
of the engine oil has expired and it should be changed
within 200 miles (322 km). See ªEngine Oilº and ªFilter
Recommendationsº in the Maintenance Schedule
booklet. After an oil change, the Oil Life Indicator must
be reset. For more information, see ªOil Life Indicator,
How to Resetº in the Index.

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CHANGE TRANS FLUID - 47: This message will
appear when it is time to replace the transaxle fluid. See
the Maintenance Schedule booklet for the proper fluid
and change intervals.
CHECK BRAKE FLUID
- 37: This message will
display if the ignition is in RUN 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 technician as soon as possible. If the brake
warning light is on, follow the directions in that part.
CHECK COOLANT LEVEL
- 2: This message
will appear when there is a low level of engine coolant.
Have the cooling system serviced by a technician as
soon as possible.
CHECK FUEL GAUGE
- 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). A single chime will also sound when this message
is displayed.
CHECK GAS CAP
- 61: This message will appear if
the gas cap has not been fully tightened. You should
recheck your gas cap to ensure that it's fully tightened.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
ªEngine Oilº 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 AJAR
- 141: A door other than the driver's
door is open or ajar when this message appears. The
vehicle's engine must be running and the transaxle not
in PARK (P) for this message to display. A chime
will also sound when the vehicle's speed is greater than
5 mph (8 km/h).