1999 BUICK RIVIERA light

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2-77 Oil Pressure Light
This light tells you if there
could be a problem with
your engine oil pressure.
When this light comes on and stays on, it means oil isn't
going through your engine properly. You could be low
on oil, or you might have some other oil problem.
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.
NOTICE:
Damage to your engine from neglected oil
problems can be costly and is not covered by
your warranty.
Check Oil Level Light
The CHECK OIL LEVEL
light is lit for two to four
seconds as a bulb check
each time the ignition key is
turned to RUN.
If the light doesn't come on, have your vehicle serviced.
If the engine oil is more than 1 qt. (0.95 L) low, this
light will turn on for about one minute and then will
remain off until the next time you start the vehicle only
if the vehicle has been shut off for at least eight minutes.
If the CHECK OIL LEVEL light comes back on, the
engine oil should be checked at the dipstick then
brought up to the proper level if necessary. See ªEngine
Oilº in the Index.

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2-78 Brake To Shift Light
This light will come on to
remind you that you must
press the brake pedal to
shift out of PARK (P).
Cruise Light
The CRUISE light comes
on when you set your cruise
control. See ªCruise
Controlº in the Index.
Door Ajar Light
When the ignition is on, this
light will stay on until both
doors are closed and
completely latched.
Fuel Gage
The fuel gage shows
about how much fuel is
in your tank.

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2-79
It works only when the ignition is on. When the
indicator nears Empty (E) you still have a little fuel left.
There is a reserve of about 1.5 gallons (5.6 L) in the fuel
tank. You need to get more fuel right away.
Here are some concerns some owners have had about
the fuel gage. All these situations are normal and do not
indicate anything wrong with the fuel gage.

At the gas station, the gas pump shuts off before the
gage reads Full (F).

It takes more (or less) gas to fill up than the gage
indicated. For example, the gage may have indicated
half full, but it took more (or less) than half of the
tank's capacity to fill it.

The gage moves a little when you turn a corner,
speed up or stop your vehicle.

When you turn the engine off, the gage doesn't go all
the way back to Empty (E).Low Fuel Light
A light near the Empty (E)
mark on the fuel gage
comes on when your vehicle
is low on fuel. You have
less than 3 gallons (11.7 L)
remaining in your fuel tank.

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3-2
Comfort Controls
This section describes how to operate your climate
control system. Your climate control system uses
ozone
-friendly R-134a refrigerant.
Dual Automatic ComforTemp
Climate Control
Your vehicle has the Dual Automatic ComforTemp
Climate Control system. The following information tells
you how it works.
You will hear a beep each time a button is pushed and a
small light on the button will indicate which buttons are
active. The lights are on all buttons except TEMP, FAN
and AIR FLOW. The display will show fan speed,
comfort level setting and airflow direction for a few
seconds whenever AUTO is selected, and then it will
display the outside temperature. The outside temperature
reading is most accurate when the vehicle is moving.
During stops, the display shows the previous
temperature for best accuracy and system control.
If the display is flashing after the climate control system
is started, there is a problem with the system and you
should see your dealer for service.
Sun and temperature sensors automatically adjust the air
temperature, the airflow direction and the fan speed to
maintain your comfort setting. The system may supply
cooler air to the side toward the sun. Be careful not to
put anything over the sensors on top of the dash.

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3-6 Defogging and Defrosting
Use the FRONT button to quickly remove fog, frost or
ice from the windshield in extremely humid or
cold conditions.
Select the FRONT button to defrost the windshield. By
choosing this button, the airflow will be directed at the
windshield. Adjust your comfort level by pressing the
TEMP up or down arrow. The fan speed will be
controlled by the system. You can change the fan speed
by pressing the top of the FAN button to increase speed,
and the bottom of the button to decrease speed.
Rear Window Defogger
The lines you see on
the rear window warm
the glass. Press the button
to start warming your
window. An indicator light
in the button will glow
while the rear window
defogger is operating.At speeds above 30 mph (48 km/h), the rear defogger
will stay on until you press the REAR defogger button
again. At speeds below 30 mph (48 km/h), the rear
window defogger will turn off automatically after about
10 minutes of use. If you press it again, the defogger
will operate for about five minutes only. You can also
turn the defogger off by turning off the ignition.
NOTICE:
Scraping the inside of your rear window could
cut and damage the heater. Your warranty would
not cover this damage. Don't put decals there
because you might have to scrape them off.

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3-7 Passenger Zone Comfort Control
The front seat passenger can control the air temperature
in the right front passenger seating area.This system can be activated by turning the COMFORT
CONTROL knob on the passenger's door.
Adjust the temperature by turning the COMFORT
CONTROL knob toward COOLER or WARMER. This
control can be set up to 5
F or 3
C cooler or warmer
than the primary setting. Notice the lighted display
above the control which indicates the difference from
the main temperature setting.
Push the OFF button on the main control panel once to
turn off this part of the system.
Ventilation System
When the vehicle is moving, fresh air flows through the
air outlets. When the vehicle is not moving, you can get
fresh air by selecting any airflow choice (except the rear
window defogger) and any fan speed.

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3-11
PUSHBUTTONS: The six numbered pushbuttons let
you return to your favorite stations. You can set up to
18 stations (six AM, six FM1 and six FM2). Just:
1. Turn the radio on.
2. Press AM
-FM to select the band.
3. Tune in the desired station.
4. Press TONE to select the setting you prefer.
5. Press and hold one of the six numbered buttons. The
sound will mute. When it returns, release the button.
Whenever you press that numbered button, the
station you set will return and the tone you selected
will be automatically selected for that button.
6. Repeat the steps for each pushbutton.
P SCAN: Press this button to listen to each of your
preset stations for a few seconds. The radio will go to
the first preset station, stop for a few seconds, then go
on to the next preset station. Press P SCAN again to stop
scanning. If a preset station has weak reception, the
radio will not stop at the preset station.
AUTO SET: Press this button and the system will seek
and set the 12 strongest FM or the 6 strongest AM
stations on your preset buttons. AUTO SET will flash
while seeking and will remain on until this function is
complete. To return to the stations you manually set,
press AUTO SET again.Setting the Tone
BASS: Press this knob lightly so it extends. Turn the
knob to increase or decrease bass.
TREB: Press this knob lightly so it extends. Turn the
knob to increase or decrease treble. If a station is weak
or noisy, you may want to decrease the treble.
Push these knobs back into their stored positions when
you're not using them.
TONE: This feature allows you to choose preset bass
and treble equalization settings designed for classical,
pop, rock, jazz, talk and country/western stations.
CLASS will appear on the display when you first press
TONE. Each time you press it, another setting will
appear on the display. Press it again after C & W
appears and MANUAL will appear. Tone control will
return to the BASS and TREB knobs. Also, if you use
the BASS and TREB knobs, control will return to them
and MANUAL will appear.

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3-12
Adjusting the Speakers
BAL: Press this knob lightly so it extends. Turn
the knob to move the sound to the left or right
speakers. The middle position balances the sound
between the speakers.
FADE: Press this knob lightly so it extends. Turn
the knob to move the sound to the front or rear
speakers. The middle position balances the sound
between the speakers.
Push these knobs back into their stored positions when
you're not using them.
Playing a Cassette Tape
The longer side with the tape visible should face to the
right. If the ignition and the radio are on, the tape can be
inserted and will begin playing. If you hear nothing or
hear a garbled sound, the tape may not be in squarely.
Press EJECT to remove the tape and start over.
While the tape is playing, use the VOLUME, FADE,
BAL, BASS and TREB controls just as you do for the
radio. Other controls may have different functions when
a tape is inserted. The display will show an arrow to
show which side of the tape is playing.If you want to insert a tape when the ignition or radio is
off, first press EJECT or RECALL.
Your tape bias is set automatically.
If E and a number appear on the radio display, the tape
won't play because of an error.

E10: The tape is tight and the player can't turn the
tape hubs. Remove the tape. Hold the tape with the
open end down and try to turn the right hub
counterclockwise with a pencil. Turn the tape over
and repeat. If the hubs do not turn easily, your tape
may be damaged and should not be used in the
player. Try a new tape to make sure your player is
working properly.

E11: The tape is broken. Try a new tape.
If any error occurs repeatedly or if an error can't be
corrected, please contact your dealer. If your radio
displays an error number, write it down and provide it to
your dealer when reporting the problem.
PREV (1): Press this button to search for the previous
selection on the tape. Your tape must have at least three
seconds of silence between each selection for PREV to
work. The sound will mute while seeking.