low oil pressure BUICK REGAL SPORTBACK 2019 Owner's Manual

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-12163021) -
2019 - CRC - 11/14/18
Keys, Doors, and Windows 37
.The engine coolant temperature
is too high.
. The oil pressure is low.
. Two remote vehicle starts, or a
single remote start with an
extension, have already
been used.
. The vehicle is not in P (Park).
Door Locks
{Warning
Unlocked doors can be
dangerous.
. Passengers, especially
children, can easily open
the doors and fall out of a
moving vehicle. The doors
can be unlocked and
opened while the vehicle is
moving. The chance of
being thrown out of the
vehicle in a crash is
increased if the doors are
not locked. So, all
(Continued)
Warning (Continued)
passengers should wear
seat belts properly and the
doors should be locked
whenever the vehicle is
driven.
. Young children who get into
unlocked vehicles may be
unable to get out. A child
can be overcome by
extreme heat and can suffer
permanent injuries or even
death from heat stroke.
Always lock the vehicle
whenever leaving it.
. Outsiders can easily enter
through an unlocked door
when you slow down or stop
the vehicle. Locking the
doors can help prevent this
from happening. To lock/unlock the doors from
outside the vehicle:
.
PressQorKon the Remote
Keyless Entry (RKE) transmitter.
See Remote Keyless Entry
(RKE) System Operation 029.
. Use Keyless Access. See
“Keyless Access Operation” in
Remote Keyless Entry (RKE)
System Operation 029.
To lock/unlock the doors from inside
the vehicle:
. Press
QorKon a power door
lock switch.
. Pull the door handle once to
unlock it. Pull the door handle
again to unlatch it.
. Push down on the door lock
knob on the top of the door to
lock the door. Manually locking
the driver door also
automatically locks all other
doors.

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-12163021) -
2019 - CRC - 11/14/18
116 Instruments and Controls
Instruments and
Controls
Controls
Steering Wheel Adjustment . . . 117
Steering Wheel Controls . . . . . . 117
Heated Steering Wheel . . . . . . . 117
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Windshield Wiper/Washer . . . . 117
Rear Window Wiper/Washer . . . . . . . . . . . . . . . . . . . . . . 118
Compass . . . . . . . . . . . . . . . . . . . . . 119
Clock . . . . . . . . . . . . . . . . . . . . . . . . . 119
Power Outlets . . . . . . . . . . . . . . . . 119
Wireless Charging . . . . . . . . . . . . 120
Warning Lights, Gauges, and
Indicators
Warning Lights, Gauges, and Indicators . . . . . . . . . . . . . . . . . . . 123
Instrument Cluster . . . . . . . . . . . . 124
Speedometer . . . . . . . . . . . . . . . . . 130
Odometer . . . . . . . . . . . . . . . . . . . . . 130
Tachometer . . . . . . . . . . . . . . . . . . . 130
Fuel Gauge . . . . . . . . . . . . . . . . . . . 130
Engine Oil Temperature Gauge
(Uplevel) . . . . . . . . . . . . . . . . . . . . 131 Engine Coolant Temperature
Gauge . . . . . . . . . . . . . . . . . . . . . . 132
Voltmeter Gauge (Uplevel) . . . 132
Seat Belt Reminders . . . . . . . . . 133
Airbag Readiness Light . . . . . . . 134
Passenger Airbag Status Indicator . . . . . . . . . . . . . . . . . . . . 134
Charging System Light . . . . . . . 135
Malfunction Indicator Lamp (Check Engine Light) . . . . . . . . 135
Brake System Warning Light . . . . . . . . . . . . . . . . . . . . . . . . 137
Electric Parking Brake Light . . . . . . . . . . . . . . . . . . . . . . . . 138
Service Electric Parking Brake Light . . . . . . . . . . . . . . . . . . . . . . . . 138
Antilock Brake System (ABS) Warning Light . . . . . . . . . . . . . . . 138
Lane Keep Assist (LKA) Light . . . . . . . . . . . . . . . . . . . . . . . . 139
Vehicle Ahead Indicator . . . . . . 139
Traction Off Light . . . . . . . . . . . . . 139
StabiliTrak OFF Light . . . . . . . . . 140
Traction Control System (TCS)/ StabiliTrak Light . . . . . . . . . . . . . 140
Engine Coolant Temperature Warning Light . . . . . . . . . . . . . . . 140
Tire Pressure Light . . . . . . . . . . . 141
Engine Oil Pressure Light . . . . 141
Low Fuel Warning Light . . . . . . 142 Security Light . . . . . . . . . . . . . . . . . 142
High-Beam On Light . . . . . . . . . . 142
Adaptive Forward Lighting
(AFL) Light . . . . . . . . . . . . . . . . . . 142
Front Fog Lamp Light . . . . . . . . . 143
Lamps On Reminder . . . . . . . . . 143
Cruise Control Light . . . . . . . . . . 143
Door Ajar Light . . . . . . . . . . . . . . . 143
Information Displays
Driver Information
Center (DIC) . . . . . . . . . . . . . . . . 144
Head-Up Display (HUD) . . . . . . 149
Vehicle Messages
Vehicle Messages . . . . . . . . . . . . 152
Engine Power Messages . . . . . 152
Vehicle Speed Messages . . . . . 153
Vehicle Personalization
Vehicle Personalization . . . . . . . 153
Universal Remote System
Universal Remote System . . . . 158
Universal Remote System Programming . . . . . . . . . . . . . . . 158
Universal Remote System Operation . . . . . . . . . . . . . . . . . . . 161

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-12163021) -
2019 - CRC - 11/14/18
Instruments and Controls 141
Caution (Continued)
engine and it may not be covered
by the vehicle warranty. See
Engine Overheating0260.
The engine coolant temperature
warning light comes on when the
engine has overheated.
If this happens, pull over and turn
off the engine as soon as possible.
See Engine Overheating 0260.
Tire Pressure Light
For vehicles with the Tire Pressure
Monitor System (TPMS), this light
comes on briefly when the engine is
started. It provides information
about tire pressures and the TPMS. When the Light Is On Steady
This indicates that one or more of
the tires are significantly
underinflated.
A Driver Information Center (DIC)
tire pressure message may also
display. Stop as soon as possible,
and inflate the tires to the pressure
value shown on the Tire and
Loading Information label. See
Tire
Pressure 0285.
When the Light Flashes First and
Then Is On Steady
If the light flashes for about a minute
and then stays on, there may be a
problem with the TPMS. If the
problem is not corrected, the light
will come on at every ignition cycle.
See Tire Pressure Monitor
Operation 0288.
Engine Oil Pressure Light
Caution
Lack of proper engine oil
maintenance can damage the
engine. Driving with the engine oil
low can also damage the engine.
The repairs would not be covered
by the vehicle warranty. Check
the oil level as soon as possible.
Add oil if required, but if the oil
level is within the operating range
and the oil pressure is still low,
have the vehicle serviced. Always
follow the maintenance schedule
for changing engine oil.
This light should come on briefly as
the engine is started. If it does not
come on, have the vehicle serviced
by your dealer.

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-12163021) -
2019 - CRC - 11/14/18
Instruments and Controls 145
Timer :To start the timer, pressV
while Timer is displayed. The
display will show the amount of time
that has passed since the timer was
last reset, not including time the
ignition is off. Time will continue to
be counted as long as the ignition is
on, even if another display is being
shown on the DIC. The timer will
record up to 99 hours, 59 minutes,
and 59 seconds (99:59:59) after
which the display will return to zero.
To stop the timer, press
Vbriefly
while Timer is displayed. To reset
the timer to zero, press and hold
V.
Navigation : Used for the OnStar
Turn-by-Turn guidance.
Blank Display : Displays no
information.
Vehicle Information Menu
(VEHICLE) Items
Units : Choose between Metric or
US when Units is active. Press
Vto
confirm the setting. This will change
the displays on the DIC to the type
of measurements you select. Speed Warning :
This display is
used to set the vehicle speed at
which the speed warning chime
sounds and the alert is displayed.
The speed can be set by pressing
Vwhile the speed warning display
is showing.
Remaining Oil Life : Displays an
estimate of the oil's remaining useful
life. If REMAINING OIL LIFE 99% is
displayed, that means 99% of the
current oil life remains.
When the remaining oil life is low,
the CHANGE ENGINE OIL SOON
message will appear on the display.
The oil should be changed as soon
as possible. See Engine Oil0251.
In addition to the engine oil life
system monitoring the oil life,
additional maintenance is
recommended. See Maintenance
Schedule 0336.
The Oil Life display must be reset
after each oil change. Do not reset
the Oil Life display accidentally at
any time other than when the oil has
just been changed. It cannot be
reset accurately until the next oil change. To reset the engine oil life
system, see
Engine Oil Life System
0 253.
Oil Pressure : Oil pressure is
displayed in either kilopascal (kPa)
or in pounds per square inch (psi).
Battery Voltage : Displays the
current battery voltage, if equipped.
Battery voltage changes are normal
while driving. See Charging System
Light 0135. If there is a problem
with the battery charging system,
the DIC will display a message.
ECO Drive Assist Menu (ECO)
Items
Fuel Economy : The center
displays the approximate
instantaneous fuel economy as a
number and bar graph. Displayed
above the bar graph is a running
average of fuel economy for the
most recently traveled selected
distance. Displayed below the bar
graph is the best average fuel
economy that has been achieved for
the selected distance. The selected
distance is displayed at the top of

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-12163021) -
2019 - CRC - 11/14/18
148 Instruments and Controls
system monitoring the oil life,
additional maintenance is
recommended. SeeMaintenance
Schedule 0336.
The Oil Life display must be reset
after each oil change. It will not
reset itself. Do not reset the Oil Life
display at any time other than when
the oil has just been changed.
It cannot be reset accurately until
the next oil change. To reset the
engine oil life system, press and
hold
Vfor several seconds while
the Oil Life display is active. See
Engine Oil Life System 0253.
Tire Pressure : Shows the
approximate pressures of all four
tires. Tire pressure is displayed in
either kilopascal (kPa) or pounds
per square inch (psi). If the pressure
is low, the value for that tire is
shown in amber. See Tire Pressure
Monitor System 0287 andTire
Pressure Monitor Operation 0288.
Timer : This display can be used as
a timer. To start the timer, press
V
while this display is active. The
display will show the amount of time that has passed since the timer was
last reset. To stop the timer, press
V
briefly while this display is active
and the timer is running. To reset
the timer to zero, press and hold
V
while this display is active, or
press
Tand select reset.
Speed Signs : If equipped, shows
sign information, which comes from
a roadway database in the onboard
navigation.
Follow Distance : If equipped, the
current follow time to the vehicle
ahead is displayed as a time value
on this page.
Driver Assistance : If equipped,
shows information for Lane Keep
Assist (LKA), Lane Departure
Warning (LDW), and Forward
Collision Alert (FCA).
Battery Voltage : Displays the
current battery voltage, if equipped.
Battery voltage changes are normal
while driving. See Charging System
Light 0135. If there is a problem
with the battery charging system,
the DIC will display a message. Top Consumers :
Shows a list of
the features that are currently
impacting the fuel economy, in order
from highest to lowest. If a feature is
turned off, it will be removed from
the list.
ECO Index : Provides feedback on
the efficiency of current driving
behavior. The bar graph shows a
value that is based on current fuel
consumption compared to what is
expected from the vehicle with good
and bad driving habits.
Economy Trend : Shows history of
the Average Fuel Economy from the
last 50 km (30 mi). Each bar
represents about 5 km (3 mi) of
driving. During driving the bars will
shift to always reflect the most
recent distance on the right side.
Press and hold
Vto clear the graph
or press
Tto reset through
the menu.

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-12163021) -
2019 - CRC - 11/14/18
244 Vehicle Care
Vehicle Care
General Information
General Information . . . . . . . . . . 245
California Proposition65 Warning . . . . . . . . . . . . . . . . . 245
California Perchlorate Materials Requirements . . . . . 246
Accessories and Modifications . . . . . . . . . . . . . . . . 246
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . 246
Hood . . . . . . . . . . . . . . . . . . . . . . . . . 247
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . 248
Engine Oil . . . . . . . . . . . . . . . . . . . . 251
Engine Oil Life System . . . . . . . 253
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . 254
Engine Air Cleaner/Filter . . . . . . 255
Cooling System . . . . . . . . . . . . . . 256
Engine Overheating . . . . . . . . . . 260
Washer Fluid . . . . . . . . . . . . . . . . . 261
Brakes . . . . . . . . . . . . . . . . . . . . . . . 262
Brake Fluid . . . . . . . . . . . . . . . . . . . 263
Battery - North America . . . . . . 264
All-Wheel Drive . . . . . . . . . . . . . . . 265 Starter Switch Check . . . . . . . . . 265
Automatic Transmission Shift
Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . . . 265
Park Brake and P (Park)
Mechanism Check . . . . . . . . . . 265
Wiper Blade Replacement . . . . 266
Windshield Replacement . . . . . 267
Gas Strut(s) . . . . . . . . . . . . . . . . . . 267
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . . . 268
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . 269
Halogen Bulbs . . . . . . . . . . . . . . . . 269
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . . . . . . . . . 269
LED Lighting . . . . . . . . . . . . . . . . . 269
Headlamps . . . . . . . . . . . . . . . . . . . 269
Fog Lamps . . . . . . . . . . . . . . . . . . . 270
Front Turn Signal Lamps . . . . . 270
Taillamps, Turn Signal, Stoplamps, and Back-Up
Lamps . . . . . . . . . . . . . . . . . . . . . . 270
Electrical System
Electrical System Overload . . . 271
Fuses and Circuit Breakers . . . 272
Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 273 Instrument Panel Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 276
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 278
All-Season Tires . . . . . . . . . . . . . . 279
Winter Tires . . . . . . . . . . . . . . . . . . 279
Low-Profile Tires . . . . . . . . . . . . . 279
Tire Sidewall Labeling . . . . . . . . 280
Tire Designations . . . . . . . . . . . . . 282
Tire Terminology andDefinitions . . . . . . . . . . . . . . . . . . 282
Tire Pressure . . . . . . . . . . . . . . . . . 285
Tire Pressure for High-Speed Operation . . . . . . . . . . . . . . . . . . . 286
Tire Pressure Monitor System . . . . . . . . . . . . . . . . . . . . . . 287
Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . . . 288
Tire Inspection . . . . . . . . . . . . . . . . 291
Tire Rotation . . . . . . . . . . . . . . . . . 291
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . 292
Buying New Tires . . . . . . . . . . . . . 293
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . . 295
Uniform Tire Quality Grading . . . . . . . . . . . . . . . . . . . . . 295
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . 297
Wheel Replacement . . . . . . . . . . 297

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-12163021) -
2019 - CRC - 11/14/18
Vehicle Care 251
1. Windshield Washer FluidReservoir. See Washer Fluid
0 261.
2. Engine Oil Fill Cap. See Engine Oil 0251.
3. Engine Oil Dipstick. See Engine Oil 0251.
4. Engine Cooling Fans (Out of View). See Cooling System
0 256
5. Brake Fluid Reservoir. See Brake Fluid 0263.
6. Engine Air Cleaner/Filter 0255.
7. Coolant Surge Tank and Pressure Cap. See Cooling
System 0256.
8. Remote Positive (+) Battery Terminal. See Jump Starting -
North America 0319.
9. Engine Compartment Fuse
Block 0273.
10. Remote Negative (-) Ground Terminal. See Jump Starting -
North America 0319.Engine Oil
To ensure proper engine
performance and long life, careful
attention must be paid to engine oil.
Following these simple, but
important steps will help protect
your investment:
.
Use engine oil approved to the
proper specification and of the
proper viscosity grade. See
“Selecting the Right Engine Oil”
in this section.
. Check the engine oil level
regularly and maintain the
proper oil level. See “Checking
Engine Oil” and“When to Add
Engine Oil” in this section.
. Change the engine oil at the
appropriate time. See Engine Oil
Life System 0253.
. Always dispose of engine oil
properly. See “What to Do with
Used Oil” in this section.
Checking Engine Oil
Check the engine oil level regularly,
every 650 km (400 mi), especially
prior to a long trip. The engine oil
dipstick handle is a loop. See
Engine Compartment Overview
0248 for the location.
{Warning
The engine oil dipstick handle
may be hot; it could burn you.
Use a towel or glove to touch the
dipstick handle.
If a low oil Driver Information Center
(DIC) message displays, check the
oil level.
Follow these guidelines:
. To get an accurate reading, park
the vehicle on level ground.
Check the engine oil level after
the engine has been off for at
least two hours. Checking the
engine oil level on steep grades
or too soon after engine shutoff
can result in incorrect readings.
Accuracy improves when

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-12163021) -
2019 - CRC - 11/14/18
Vehicle Care 257
3.6L V6 Engine
1. Engine Cooling Fans (Outof View)
2. Coolant Surge Tank and Pressure Cap
{Warning
An underhood electric fan can
start up even when the engine is
not running and can cause injury.
Keep hands, clothing, and tools
away from any underhood
electric fan.
{Warning
Do not touch heater or radiator
hoses, or other engine parts.
They can be very hot and can
burn you. Do not run the engine if
there is a leak; all coolant could
leak out. That could cause an
engine fire and can burn you. Fix
any leak before driving the
vehicle.
Engine Coolant
The cooling system in the vehicle is
filled with DEX-COOL engine
coolant. This coolant is designed to
remain in the vehicle for five years
or 240 000 km (150,000 mi),
whichever occurs first.
The following explains the cooling
system and how to check and add
coolant when it is low. If there is a
problem with engine overheating,
see Engine Overheating 0260.
What to Use
{Warning
Plain water, or other liquids such
as alcohol, can boil before the
proper coolant mixture will. With
plain water or the wrong mixture,
the engine could get too hot but
there would not be an overheat
warning. The engine could catch
fire and you or others could be
burned.
Use a 50/50 mixture of clean,
drinkable water and DEX-COOL
coolant. If using this mixture,
nothing else needs to be added.
This mixture:
. Gives freezing protection down
to−37 °C (−34 °F), outside
temperature.
. Gives boiling protection up to
129 °C (265 °F), engine
temperature.
. Protects against rust and
corrosion.

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-12163021) -
2019 - CRC - 11/14/18
258 Vehicle Care
.Will not damage aluminum parts.
. Helps keep the proper engine
temperature.
Caution
Do not use anything other than a
mix of DEX-COOL coolant that
meets GM Standard
GMW3420 and clean, drinkable
water. Anything else can cause
damage to the engine cooling
system and the vehicle, which
would not be covered by the
vehicle warranty.
Never dispose of engine coolant by
putting it in the trash, pouring it on
the ground, or into sewers, streams,
or bodies of water. Have the coolant
changed by an authorized service
center, familiar with legal
requirements regarding used
coolant disposal. This will help
protect the environment and your
health.
Checking Coolant
The vehicle must be on a level
surface when checking the coolant
level.
Check to see if coolant is visible in
the coolant surge tank. If the coolant
inside the coolant surge tank is
boiling, do not do anything else until
it cools down.
If coolant is visible but the coolant
level is not at or above the mark
pointed to, add a 50/50 mixture of
clean, drinkable water and
DEX-COOL coolant. Be sure the cooling system is cool
before this is done.
If no coolant is visible in the coolant
surge tank, add coolant as follows:
How to Add Coolant to the
Coolant Surge Tank
{Warning
Steam and scalding liquids from a
hot cooling system are under
pressure. Turning the pressure
cap, even a little, can cause them
to come out at high speed and
you could be burned. Never turn
the cap when the cooling system,
including the pressure cap, is hot.
Wait for the cooling system and
pressure cap to cool.
{Warning
Plain water, or other liquids such
as alcohol, can boil before the
proper coolant mixture will. With
(Continued)

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-12163021) -
2019 - CRC - 11/14/18
330 Vehicle Care
Interior Care
To prevent dirt particle abrasions,
regularly clean the vehicle's interior.
Immediately remove any soils.
Newspapers or dark garments can
transfer color to the vehicle’s
interior.
Use a soft bristle brush to remove
dust from knobs and crevices on the
instrument cluster. Using a mild
soap solution, immediately remove
hand lotions, sunscreen, and insect
repellent from all interior surfaces or
permanent damage may result.
Use cleaners specifically designed
for the surfaces being cleaned to
prevent permanent damage. Apply
all cleaners directly to the cleaning
cloth. Do not spray cleaners on any
switches or controls. Remove
cleaners quickly.
Before using cleaners, read and
follow all safety instructions on the
label. While cleaning the interior,
open the doors and windows to get
proper ventilation.To prevent damage, do not clean
the interior using the following
cleaners or techniques:
.
Never use a razor or any other
sharp object to remove soil from
any interior surface.
. Never use a brush with stiff
bristles.
. Never rub any surface
aggressively or with too much
pressure.
. Do not use laundry detergents or
dishwashing soaps with
degreasers. For liquid cleaners,
use approximately 20 drops per
3.8 L (1 gal) of water.
A concentrated soap solution will
create streaks and attract dirt.
Do not use solutions that contain
strong or caustic soap.
. Do not heavily saturate the
upholstery when cleaning.
. Do not use solvents or cleaners
containing solvents.
Interior Glass
To clean, use a terry cloth fabric
dampened with water. Wipe droplets
left behind with a clean dry cloth.
If necessary, use a commercial
glass cleaner after cleaning with
plain water.
Caution
To prevent scratching, never use
abrasive cleaners on automotive
glass. Abrasive cleaners or
aggressive cleaning may damage
the rear window defogger.
Cleaning the windshield with water
during the first three to six months
of ownership will reduce tendency
to fog.
Speaker Covers
Vacuum around a speaker cover
gently, so that the speaker will not
be damaged. Clean spots with water
and mild soap.