
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
154 Instruments and Controls
Sport AWD
Touch Off or On.
Climate and Air Quality
Touch and the following may
display:
.Auto Fan Speed
. Auto Cooled Seats
. Auto Heated Seats
. Auto Defog
. Auto Rear Defog
. Ionizer
Auto Fan Speed
This setting specifies the amount of
airflow when the climate control fan
setting is Auto Fan.
Touch Low, Medium, or High.
Auto Cooled Seats
When enabled, this feature will
automatically activate ventilated
seats at the level required by the
interior temperature. See Heated
and Ventilated Front Seats 066.
Touch Off or On. Auto Heated Seats
When enabled, this feature will
automatically activate the heated
seats at the level required by the
interior temperature. The auto
heated seats can be turned off by
using the heated seat buttons on
the center console. See
Heated and
Ventilated Front Seats 066.
Touch Off or On.
Auto Defog
This setting automatically turns the
front defogger on when the engine
is started.
Touch Off or On.
Auto Rear Defog
This setting automatically turns the
rear defogger on when the engine is
started.
Touch Off or On.
Ionizer
If equipped and on, this feature
helps to clean the air inside the
vehicle and remove contaminants such as pollen, odors, and dust.
See
Dual Automatic Climate Control
System 0171.
Touch Off or On.Collision/Detection Systems
Touch and the following may
display:
. Forward Collision System
. Front Pedestrian Detection
. Rear Cross Traffic Alert
. Adaptive Cruise Go Notifier
. Lane Change Alert
Forward Collision System
This feature will turn on or off
Forward Collision Alert (FCA) and
Forward Automatic Braking (FAB).
The Off setting disables all FCA and
FAB functions. With the Alert and
Brake setting, both FCA and FAB
are available. The Alert setting
disables FAB. See Forward
Automatic Braking (FAB) 0223.
Touch Off, Alert, or Alert and Brake.

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-12163021) -
2019 - CRC - 11/14/18
Instruments and Controls 155
Front Pedestrian Detection
This feature may help avoid or
reduce the harm caused by
front-end crashes with nearby
pedestrians.
SeeFront Pedestrian Braking (FPB)
System 0225.
Touch Off, Alert, or Alert and Brake.
Rear Cross Traffic Alert
This allows the Rear Cross Traffic
Alert feature to be turned on or off.
See Assistance Systems for Parking
or Backing 0219.
Touch Off or On.
Adaptive Cruise Go Notifier
This feature will give a reminder that
Adaptive Cruise Control provides
when it has brought the vehicle to a
complete stop behind another
stopping vehicle, and then that
vehicle drives on.
Touch Off or On. See Adaptive
Cruise Control 0210. Lane Change Alert
The LCA system is a lane-changing
aid that assists drivers with avoiding
lane change crashes. See
Lane
Change Alert (LCA) 0227.
When Lane Change Alert is
disabled, Side Blind Zone Alert is
also disabled.
Touch Off or On.
Comfort and Convenience
Touch and the following may
display:
. Chime Volume
. Hands Free Liftgate Control
. Reverse Tilt Mirror
. Auto Wipe in Reverse Gear
. Extended Hill Start Assist
Chime Volume
This determines the chime volume
level.
Touch the controls on the
infotainment display to adjust the
volume. Hands Free Liftgate Control
The liftgate may be operated with a
kicking motion under the rear
bumper. See
Liftgate041.
Touch Off, On-Open and Close,
or On-Open Only.
Reverse Tilt Mirror
When on, the driver and/or
passenger mirrors will tilt downward
when the vehicle is shifted to
R (Reverse) to improve visibility of
the ground near the rear wheels.
They will return to their previous
driving position when the vehicle is
shifted out of R (Reverse) or the
engine is turned off. See Reverse
Tilt Mirrors 052.
Touch Off, On - Driver and
Passenger, On - Driver, or On -
Passenger.
Auto Wipe in Reverse Gear
Select to set the Auto Wipe in
Reverse Gear feature on or off.
When on, and the front wipers are
on, the rear window wiper will turn
on automatically when the vehicle is
shifted into R (Reverse).

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-12163021) -
2019 - CRC - 11/14/18
178 Driving and Operating
Driving and
Operating
Driving Information
Distracted Driving . . . . . . . . . . . . 179
Defensive Driving . . . . . . . . . . . . . 180
Drunk Driving . . . . . . . . . . . . . . . . . 180
Control of a Vehicle . . . . . . . . . . . 180
Braking . . . . . . . . . . . . . . . . . . . . . . . 180
Steering . . . . . . . . . . . . . . . . . . . . . . 181
Off-Road Recovery . . . . . . . . . . . 182
Loss of Control . . . . . . . . . . . . . . . 182
Driving on Wet Roads . . . . . . . . 183
Hill and Mountain Roads . . . . . 183
Winter Driving . . . . . . . . . . . . . . . . 184
If the Vehicle Is Stuck . . . . . . . . 185
Vehicle Load Limits . . . . . . . . . . . 186
Starting and Operating
New Vehicle Break-In . . . . . . . . . 190
Ignition Positions . . . . . . . . . . . . . 190
Starting the Engine . . . . . . . . . . . 192
Stop/Start System . . . . . . . . . . . . 193
Engine Heater . . . . . . . . . . . . . . . . 194
Retained AccessoryPower (RAP) . . . . . . . . . . . . . . . . 195
Shifting Into Park . . . . . . . . . . . . . 195
Shifting out of Park . . . . . . . . . . . 196 Parking over Things
That Burn . . . . . . . . . . . . . . . . . . . 197
Extended Parking . . . . . . . . . . . . 197
Engine Exhaust
Engine Exhaust . . . . . . . . . . . . . . 197
Running the Vehicle While Parked . . . . . . . . . . . . . . . . . . . . . . 198
Automatic Transmission
Automatic Transmission . . . . . . 198
Manual Mode . . . . . . . . . . . . . . . . . 200
Drive Systems
All-Wheel Drive . . . . . . . . . . . . . . . 201
Brakes
Antilock BrakeSystem (ABS) . . . . . . . . . . . . . . . 202
Electric Parking Brake . . . . . . . . 202
Brake Assist . . . . . . . . . . . . . . . . . . 204
Hill Start Assist (HSA) . . . . . . . . 204
Ride Control Systems
Traction Control/Electronic
Stability Control . . . . . . . . . . . . . 205
Selective Ride Control (GS Models Only) . . . . . . . . . . . . . . . . 207
Cruise Control
Cruise Control . . . . . . . . . . . . . . . . 208
Adaptive Cruise Control . . . . . . 210
Driver Assistance Systems
Driver Assistance Systems . . . 217
Assistance Systems forParking or Backing . . . . . . . . . . 219
Assistance Systems for Driving . . . . . . . . . . . . . . . . . . . . . . 221
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . . . . . . 221
Forward Automatic Braking (FAB) . . . . . . . . . . . . . . . 223
Front Pedestrian Braking (FPB) System . . . . . . . . . . . . . . . 225
Side Blind Zone Alert (SBZA) . . . . . . . . . . . . . . . . 227
Lane Change Alert (LCA) . . . . . 227
Lane Departure Warning (LDW) . . . . . . . . . . . . . 229
Lane Keep Assist (LKA) . . . . . . 229
Fuel
Top Tier Fuel . . . . . . . . . . . . . . . . . 231
Recommended Fuel (2.0L Turbo Engine) . . . . . . . . . . . . . . . 232
Recommended Fuel (3.6L Engine) . . . . . . . . . . . . . . . . . . . . . 232
Prohibited Fuels . . . . . . . . . . . . . . 232
Fuels in Foreign Countries . . . 233
Fuel Additives . . . . . . . . . . . . . . . . 233
Filling the Tank . . . . . . . . . . . . . . . 233

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
184 Driving and Operating
{Warning
Using the brakes to slow the
vehicle on a long downhill slope
can cause brake overheating, can
reduce brake performance, and
could result in a loss of braking.
Shift the transmission to a lower
gear to let the engine assist the
brakes on a steep downhill slope.
{Warning
Coasting downhill in N (Neutral)
or with the ignition off is
dangerous. This can cause
overheating of the brakes and
loss of steering assist. Always
have the engine running and the
vehicle in gear.
. Drive at speeds that keep the
vehicle in its own lane. Do not
swing wide or cross the
center line. .
Be alert on top of hills;
something could be in your lane
(e.g., stalled car, crash).
. Pay attention to special road
signs (e.g., falling rocks area,
winding roads, long grades,
passing or no-passing zones)
and take appropriate action.
Winter Driving
Driving on Snow or Ice
Snow or ice between the tires and
the road creates less traction or
grip, so drive carefully. Wet ice can
occur at about 0 °C (32 °F) when
freezing rain begins to fall. Avoid
driving on wet ice or in freezing rain
until roads can be treated.
For Slippery Road Driving:
.Accelerate gently. Accelerating
too quickly causes the wheels to
spin and makes the surface
under the tires slick.
. Turn on Traction Control. See
Traction Control/Electronic
Stability Control 0205. .
The Antilock Brake System
(ABS) improves vehicle stability
during hard stops, but the
brakes should be applied sooner
than when on dry pavement.
See Antilock Brake System
(ABS) 0202.
. Allow greater following distance
and watch for slippery spots. Icy
patches can occur on otherwise
clear roads in shaded areas.
The surface of a curve or an
overpass can remain icy when
the surrounding roads are clear.
Avoid sudden steering
maneuvers and braking while
on ice.
. Turn off cruise control.
Blizzard Conditions
Stop the vehicle in a safe place and
signal for help. Stay with the vehicle
unless there is help nearby.
If possible, use Roadside
Assistance. See Roadside
Assistance Program 0356. To get
help and keep everyone in the
vehicle safe:

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-12163021) -
2019 - CRC - 11/14/18
Driving and Operating 205
selected, the vehicle is held
stationary for up to five minutes
after the brake pedal is released. In
either case, override the hold
feature by pressing the accelerator
pedal and attempting to drive away.
If Standard Hold is selected, it will
hold the vehicle for two seconds
unless the driver door is opened or
the driver seat belt is unbuckled
after releasing the brake pedal.
If Extended Hold is selected, it will
hold the vehicle for five minutes
unless the driver door is opened
and the driver seat belt is unbuckled
prior to releasing the brake pedal.
When deactivated after five minutes,
or if it is deactivated when the driver
seat belt is unlatched or the driver
door is opened, the Electric Parking
Brake will engage to prevent vehicle
movement.Ride Control Systems
Traction Control/
Electronic Stability
Control
System Operation
The vehicle has a Traction Control
System (TCS) and StabiliTrak/
Electronic Stability Control (ESC),
an electronic stability control
system. These systems help limit
wheel slip and assist the driver in
maintaining control, especially on
slippery road conditions.
TCS activates if it senses that any
of the drive wheels are spinning or
beginning to lose traction. When this
happens, TCS applies the brakes to
the spinning wheels and reduces
engine power to limit wheel spin.
StabiliTrak/ESC activates when the
vehicle senses a difference between
the intended path and the direction
the vehicle is actually traveling.
StabiliTrak/ESC selectively applies
braking pressure to any one of thevehicle wheel brakes to assist the
driver in keeping the vehicle on the
intended path.
If cruise control is being used and
traction control or StabiliTrak/ESC
begins to limit wheel spin, cruise
control will disengage. Cruise
control may be turned back on when
road conditions allow.
Both systems come on
automatically when the vehicle is
started and begins to move. The
systems may be heard or felt while
they are operating or while
performing diagnostic checks. This
is normal and does not mean there
is a problem with the vehicle.
It is recommended to leave both
systems on for normal driving
conditions, but it may be necessary
to turn TCS off if the vehicle gets
stuck in sand, mud, ice, or snow.
See
If the Vehicle Is Stuck 0185
and “Turning the Systems Off and
On” later in this section.

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-12163021) -
2019 - CRC - 11/14/18
208 Driving and Operating
.Shock absorbers stiffen to the
firmest setting for increased
control.
. Power steering assist is reduced
for sportier feel.
. The automatic transmission
shifts more aggressively for
sportier feel and improved
acceleration.*
. The AWD system distributes
more AWD engine torque to the
rear axle.
* Performance Shifting is enabled in
Sport mode and GS mode.
Performance Shifting detects
spirited driving and adapts
transmission shifts to maximize
vehicle acceleration.
Personalized Settings in
Sport Mode
The driver can customize the Sport
Mode settings to fit their preference.
See Vehicle Personalization 0153.Cruise Control
With cruise control the vehicle can
maintain a speed of about 40 km/h
(25 mph) or more without keeping
your foot on the accelerator. Cruise
control does not work at speeds
below 40 km/h (25 mph).
{Warning
Cruise control can be dangerous
where you cannot drive safely at
a steady speed. Do not use
cruise control on winding roads or
in heavy traffic.
Cruise control can be dangerous
on slippery roads. On such roads,
fast changes in tire traction can
cause excessive wheel slip, and
you could lose control. Do not use
cruise control on slippery roads. If equipped with the Traction Control
System (TCS), the system may
begin to limit wheel spin while you
are using cruise control. If this
happens, the cruise control will
automatically disengage. See
Traction Control/Electronic Stability
Control
0205. If a collision alert
occurs when cruise control is
activated, cruise control is
disengaged. See Forward Collision
Alert (FCA) System 0221. When
road conditions allow you to safely
use it again, cruise control can be
turned back on.
Cruise control will disengage if
either TCS or StabiliTrak/Electronic
Stability Control (ESC) is turned off.
If the brakes are applied, cruise
control disengages.