1999 BUICK RIVIERA lights

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2-66
Instrument Panel Cluster
Your vehicle is equipped with this instrument panel cluster. Your instrument panel cluster is designed to let you know
at a glance how your vehicle is running. It includes indicator warning lights and gages that are explained on the
following pages. You'll know how fast you're going, how much fuel you're using, and many other things you'll need
to know to drive safely and economically.

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2-68
Warning Lights, Gages
and Indicators
This part describes the warning lights and gages that
may be on your vehicle. The pictures will help you
locate them.
Warning lights and gages can signal that something is
wrong before it becomes serious enough to cause an
expensive repair or replacement. Paying attention to
your warning lights and gages could also save you or
others from injury.
Warning lights come on when there may be or is a
problem with one of your vehicle's functions. As you
will see in the details on the next few pages, some
warning lights come on briefly when you start the
engine just to let you know they're working. If you are
familiar with this section, you should not be alarmed
when this happens.
Gages can indicate when there may be or is a problem
with one of your vehicle's functions. Often gages and
warning lights work together to let you know when
there's a problem with your vehicle.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.
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.
The safety belt light will
also come on and stay on
for about 70 seconds. If the
driver's belt is already
buckled, neither the chime
nor the light will come on.

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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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4-16
Here are some tips on night driving.

Drive defensively.

Don't drink and drive.

Adjust your inside rearview mirror to reduce the
glare from headlamps behind you.

Since you can't see as well, you may need to
slow down and keep more space between you and
other vehicles.

Slow down, especially on higher speed roads. Your
headlamps can light up only so much road ahead.

In remote areas, watch for animals.

If you're tired, pull off the road in a safe place
and rest.
Night Vision
No one can see as well at night as in the daytime. But as
we get older these differences increase. A 50
-year-old
driver may require at least twice as much light to see the
same thing at night as a 20
-year-old.
What you do in the daytime can also affect your night
vision. For example, if you spend the day in bright
sunshine you are wise to wear sunglasses. Your eyes will
have less trouble adjusting to night. But if you'redriving, don't wear sunglasses at night. They may cut
down on glare from headlamps, but they also make a lot
of things invisible.
You can be temporarily blinded by approaching
headlamps. It can take a second or two, or even several
seconds, for your eyes to readjust to the dark. When you
are faced with severe glare (as from a driver who
doesn't lower the high beams, or a vehicle with
misaimed headlamps), slow down a little. Avoid staring
directly into the approaching headlamps.
Keep your windshield and all the glass on your vehicle
clean
-- inside and out. Glare at night is made much
worse by dirt on the glass. Even the inside of the glass
can build up a film caused by dust. Dirty glass makes
lights dazzle and flash more than clean glass would,
making the pupils of your eyes contract repeatedly.
Remember that your headlamps light up far less of a
roadway when you are in a turn or curve. Keep your
eyes moving; that way, it's easier to pick out dimly
lighted objects. Just as your headlamps should be
checked regularly for proper aim, so should your eyes
be examined regularly. Some drivers suffer from night
blindness
-- the inability to see in dim light -- and aren't
even aware of it.

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4-37 Turn Signals When Towing a Trailer
The arrows on your instrument panel will flash
whenever you signal a turn or lane change. Properly
hooked up, the trailer lamps will also flash, telling other
drivers you're about to turn, change lanes or stop.
When towing a trailer, the arrows on your instrument
panel will flash for turns even if the bulbs on the trailer
are burned out. Thus, you may think drivers behind
you are seeing your signal when they are not. It's
important to check occasionally to be sure the trailer
bulbs are still working.
Your vehicle has bulb warning lights. When you plug a
trailer lighting system into your vehicle's lighting
system, its bulb warning lights may not let you know if
one of your lamps goes out. So, when you have a trailer
lighting system plugged in, be sure to check your
vehicle and trailer lamps from time to time to be sure
they're all working. Once you disconnect the trailer
lamps, the bulb warning lights again can tell you if one
of your vehicle lamps is out.
Driving On Grades
Reduce speed and shift to a lower gear before you start
down a long or steep downgrade. If you don't shift
down, you might have to use your brakes so much that
they would get hot and no longer work well.
On a long uphill grade, use the highest gear possible.
If you cannot maintain posted speeds, driving at a
lower speed may help avoid overheating your engine
and transaxle.
Parking on Hills
CAUTION:
You really should not park your vehicle, with a
trailer attached, on a hill. If something goes
wrong, your rig could start to move. People can
be injured, and both your vehicle and the trailer
can be damaged.

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6-21
Thermostat
Engine coolant temperature is controlled by a thermostat
in the engine coolant system. The thermostat stops the
flow of coolant through the radiator until the coolant
reaches a preset temperature.
When you replace your thermostat, a GM thermostat i
s recommended.
Engine Coolant
The cooling system in your vehicle is filled with
DEX
-COOL
engine coolant. This coolant is designed
to remain in your vehicle for 5 years or 150,000 miles
(240 000 km), whichever occurs first, if you add only
DEX
-COOL
extended life coolant.
The following explains your cooling system and how to
add coolant when it is low. If you have a problem with
engine overheating, see ªEngine Overheatingº in
the Index.A 50/50 mixture of clean, drinkable water and
DEX
-COOL
coolant will:

Give freezing protection down to
-34F (-37C).

Give boiling protection up to 265F (129C).

Protect against rust and corrosion.

Help keep the proper engine temperature.

Let the warning lights and gages work as
they should.
NOTICE:
When adding coolant, it is important that you use
only DEX
-COOL (silicate-free) coolant.
If coolant other than DEX-COOL 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. Damage caused by the use
of coolant other than DEX
-COOL is not
covered by your new vehicle warranty.

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6-59
Instrument Panel Fuse BlockFuse Usage
1 Air Bag
2 Injectors
3 Anti
-Lock Brake System
4 Left Exterior Lamps
5 Turn Signal Lamps
6 Oxygen Sensor
7 Climate Control
8 Right Exterior Lamps
9 HVAC Relay
10 MAF
11 Auxiliary Power
12 Interior Lamps
13 Chime
14 TMNSS
15 Cruise Control
16 Perimeter Lights
17 Not Used

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9-6
Instrument Panel 2-64 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brightness Control 2-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning 6-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cluster 2-66 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuse Block 6-59 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interior Lamps 2-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bulb Replacement 6-38 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Jack, Tire 5-18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Jump Starting 5-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Key Lock Cylinders Service 7-32 . . . . . . . . . . . . . . . . . . . . .
Key Reminder Warning 2-14 . . . . . . . . . . . . . . . . . . . . . . . . . .
Keyless Entry 2-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Keys 2-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Labels
Certification 4-31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Parts Identification 6-56 . . . . . . . . . . . . . . . . . . . . .
Tire-Loading Information 4-30 . . . . . . . . . . . . . . . . . . . . . .
Vehicle Identification Number 6-56 . . . . . . . . . . . . . . . . . . .
Lamp, Trunk 2-45 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lamps 2-40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cornering 2-42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Courtesy 2-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Instrument Panel 2-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interior 2-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
On Reminder 2-41 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Latches, Seatback 1-7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Leaving Your Vehicle 2-7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Leaving Your Vehicle with the Engine Running 2
-29 . . . . . . .
License Plate Holder 2-59 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Light Sensor, Twilight Sentinel 2-42 . . . . . . . . . . . . . . . . . . . .
Lighter 2-57 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lights
Air Bag Readiness 1
-23, 2-69 . . . . . . . . . . . . . . . . . . . . . . .
Anti-Lock Brake System Warning 2-71, 4-7 . . . . . . . . . . . .
Battery Warning 2-69 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake System Warning 2-70 . . . . . . . . . . . . . . . . . . . . . . . . .
Brake to Shift 2-78 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Check Oil 2-77 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cruise 2-78 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Door Ajar 2-78 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine Coolant Temperature Warning 2-72 . . . . . . . . . . . . .
Hazard Warning 5-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interior 2-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Coolant Warning 2-73 . . . . . . . . . . . . . . . . . . . . . . . . .
Low Fuel 2-79 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil Pressure 2-77 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety Belt Reminder 1-9, 2-68 . . . . . . . . . . . . . . . . . . . . . .
Security 2-15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Engine Soon 2-74 . . . . . . . . . . . . . . . . . . . . . . . . . .
Traction Control System Warning 2-71, 4-9 . . . . . . . . . . . .
Washer Fluid Low 2-38 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loading Your Vehicle 4-30 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Locks 2-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Door 2-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Door, Delayed Locking 2-7 . . . . . . . . . . . . . . . . . . . . . . . . .
Ignition Transaxle Lock Check 7-34 . . . . . . . . . . . . . . . . . .
Key Lock Cylinder Service 7-32 . . . . . . . . . . . . . . . . . . . . .
Lockout Protection 2-7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .