
Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-12163021) -
2019 - CRC - 11/14/18
18 In Brief
LO :Use for slow wipes.
INT : Use for intermittent wipes. To
adjust wipe frequency, turn the band
up for more frequent wipes or down
for less frequent wipes.
OFF : Use to turn the wipers off.
1x : For a single wipe, briefly move
the wiper lever down. For several
wipes, hold the wiper lever down.
f: Pull the windshield wiper
lever toward you to spray windshield
washer fluid and activate the wipers.
See Windshield Wiper/Washer
0 117.
Rear Window Wiper/Washer
If equipped, turn the end of the
windshield wiper lever to operate
the rear window wiper/washer.
OFF : Turns the system off. INT :
Intermittent wipes.
ON : Slow wipes.
1:Push the windshield wiper
lever forward to spray washer fluid
on the rear window. The lever
automatically returns to its original
position when released.
See Rear Window Wiper/Washer
0 118.

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-12163021) -
2019 - CRC - 11/14/18
118 Instruments and Controls
INT :Use for intermittent wipes. To
adjust wipe frequency, turn the band
up for more frequent wipes or down
for less frequent wipes.
OFF : Use to turn the wipers off.
1x : For a single wipe, briefly move
the wiper lever down. For several
wipes, hold the wiper lever down.
f: Pull the windshield wiper
lever toward you to spray windshield
washer fluid and activate the wipers.
The wipers will continue until the
lever is released or the maximum
wash time is reached. When the
lever is released, additional wipes
may occur depending on how long
the windshield washer had been activated. See
Washer Fluid0261
for information on filling the
windshield washer fluid reservoir.
{Warning
In freezing weather, do not use
the washer until the windshield is
warmed. Otherwise the washer
fluid can form ice on the
windshield, blocking your vision.
Clear snow and ice from the wiper
blades before using them. If frozen
to the windshield, carefully loosen or
thaw them. Damaged blades should
be replaced. See Wiper Blade
Replacement 0266.
Heavy snow or ice can overload the
wiper motor.
Wipe Parking
If the ignition is turned off while the
wipers are on LO, HI, or INT, they
will immediately stop. If the windshield wiper lever is then
moved to OFF before the driver
door is opened or within 10 minutes,
the wipers will restart and move to
the base of the windshield.
If the ignition is turned off while the
wipers are performing wipes due to
windshield washing, the wipers
continue to run until they reach the
base of the windshield.
Rear Window Wiper/
Washer
If equipped, the ignition must be on
or in ACC/ACCESSORY to operate
the rear window wiper/washer.

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-12163021) -
2019 - CRC - 11/14/18
Instruments and Controls 119
Turn the end of the windshield wiper
lever to operate the rear window
wiper/washer.
OFF :Turns the system off.
INT : Intermittent wipes.
ON : Slow wipes.
1:Push the windshield wiper
lever forward to spray washer fluid
on the rear window. The lever
automatically returns to its original
position when released.
Reverse Gear Wipes
If the rear wiper control is off, the
rear wiper will automatically operate
continuously when the shift lever is
in R (Reverse), and the front
windshield wiper is performing low
or high speed wipes. If the rear
wiper control is off, the shift lever is
in R (Reverse), and the front
windshield wiper is performing
interval wipes, then the rear wiper
automatically performs interval
wipes.
This feature can be turned on or off.
See Vehicle Personalization 0153. The windshield washer reservoir is
used for the windshield and rear
window. Check the fluid level if
either washer is not working. See
Washer Fluid
0261.
Compass
The vehicle may have a compass
display on the Driver Information
Center (DIC). The compass receives
its heading and other information
from the Global Positioning
System (GPS) antenna, StabiliTrak/
Electronic Stability Control (ESC),
and vehicle speed information.
The compass system is designed to
operate for a certain number of
miles or degrees of turn before
needing a signal from the GPS
satellites. When the compass
display shows CAL, drive the
vehicle for a short distance in an
open area where it can receive a
GPS signal. The compass system
will automatically determine when a
GPS signal is restored and provide
a heading again.
Clock
Set the time and date using the
infotainment system. See "Time /
Date" under “Settings”in the
infotainment manual.
Power Outlets
Power Outlets 12-Volt Direct
Current
The 12-volt power outlets can be
used to plug in electrical equipment,
such as a cell phone or MP3 player.

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-12163021) -
2019 - CRC - 11/14/18
152 Instruments and Controls
HUD Troubleshooting
If you cannot see the HUD image
when the ignition is on, check that:
.Nothing is covering the
HUD lens.
. The HUD brightness setting is
not too dim or too bright.
. The HUD is adjusted to the
proper height.
. Polarized sunglasses are
not worn.
. The windshield and HUD lens
are clean.
If the HUD image is not correct,
contact your dealer.
The windshield is part of the HUD
system. See Windshield
Replacement 0267.
Vehicle Messages
Messages displayed on the DIC
indicate the status of the vehicle or
some action that may be needed to
correct a condition. Multiple
messages may appear one after
another.
The messages that do not require
immediate action can be
acknowledged and cleared by
pressing
V. The messages that
require immediate action cannot be
cleared until that action is
performed.
All messages should be taken
seriously; clearing the message
does not correct the problem.
If a SERVICE message appears,
see your dealer.
Follow the instructions given in the
messages. The system displays
messages regarding the following
topics:
. Service Messages
. Fluid Levels
. Vehicle Security .
Brakes
. Steering
. Ride Control Systems
. Driver Assistance Systems
. Cruise Control
. Lighting and Bulb Replacement
. Wiper/Washer Systems
. Doors and Windows
. Seat Belts
. Airbag Systems
. Engine and Transmission
. Tire Pressure
. Battery
Engine Power Messages
ENGINE/PROPULSION POWER
IS REDUCED
This message displays when the
vehicle's propulsion power is
reduced. Reduced propulsion power
can affect the vehicle's ability to
accelerate. If this message is on,
but there is no observed reduction

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-12163021) -
2019 - CRC - 11/14/18
Driving and Operating 183
Remember: Antilock brakes help
avoid only the braking skid.
Driving on Wet Roads
Rain and wet roads can reduce
vehicle traction and affect your
ability to stop and accelerate.
Always drive slower in these types
of driving conditions and avoid
driving through large puddles and
deep-standing or flowing water.
{Warning
Wet brakes can cause crashes.
They might not work as well in a
quick stop and could cause
pulling to one side. You could
lose control of the vehicle.
After driving through a large
puddle of water or a car/vehicle
wash, lightly apply the brake
pedal until the brakes work
normally.(Continued)
Warning (Continued)
Flowing or rushing water creates
strong forces. Driving through
flowing water could cause the
vehicle to be carried away. If this
happens, you and other vehicle
occupants could drown. Do not
ignore police warnings and be
very cautious about trying to drive
through flowing water.
Hydroplaning
Hydroplaning is dangerous. Water
can build up under the vehicle's
tires so they actually ride on the
water. This can happen if the road is
wet enough and you are going fast
enough. When the vehicle is
hydroplaning, it has little or no
contact with the road.
There is no hard and fast rule about
hydroplaning. The best advice is to
slow down when the road is wet.
Other Rainy Weather Tips
Besides slowing down, other wet
weather driving tips include:
.Allow extra following distance.
. Pass with caution.
. Keep windshield wiping
equipment in good shape.
. Keep the windshield washer fluid
reservoir filled.
. Have good tires with proper
tread depth. See Tires0278.
. Turn off cruise control.
Hill and Mountain Roads
Driving on steep hills or through
mountains is different than driving
on flat or rolling terrain. Tips include:
.Keep the vehicle serviced and in
good shape.
. Check all fluid levels and brakes,
tires, cooling system, and
transmission.
. Shift to a lower gear when going
down steep or long hills.

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 249
1.Engine Air Cleaner/Filter 0255.
2. Engine Oil Fill Cap. See Engine Oil 0251.
3. Engine Oil Dipstick. See Engine Oil 0251.
4. Engine Cooling Fan (Out of View). See Cooling System
0 256.
5. Brake Fluid Reservoir. See Brake Fluid 0263. 6. Battery (Under Cover). See
Battery - North America 0264.
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. Windshield Washer Fluid Reservoir. See Washer Fluid
0 261.
11. Remote Negative (-) Ground Terminal. See Jump Starting -
North America 0319.

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