ABS BUICK REGAL 2020 User Guide

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-13557849) -
2020 - CRC - 6/25/19
Driving and Operating 193
The following electronic systems
have been calibrated for each
driving mode:
.Continuous Damping
Control (CDC)
. Power Steering Assist
. Automatic Transmission
. All-Wheel Drive (AWD)
When the vehicle is started, Normal
mode comes on automatically. Sport
mode or GS mode can be selected
by pressing and releasing SPORT
or GS button. The light on the
selected button will illuminate,
indicating the driving mode. To
return to Normal mode, press and
release the illuminated button.
When both button lights are off, the
vehicle is in Normal mode. The
driving mode can be changed at any
time, whether the vehicle is
stationary or moving.
Normal : This is the default mode
used for normal city driving and
long-distance highway driving. This
setting provides a smooth, soft ride. .
Shock absorbers are in the
comfort setting.
. Power steering assist is normal.
Sport : Use this mode when
personal preference or road
conditions demand more control.
This setting provides responsive,
controlled steering and handling.
It also modifies the automatic
transmission shift feel and the AWD
torque distribution for sportier
performance.
. Shock absorbers stiffen to
provide better contact with the
road surface and increase body
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. GS :
Use this mode for additional
control and responsiveness, and
sportiest performance.
. 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 0138.

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-13557849) -
2020 - CRC - 6/25/19
Driving and Operating 225
When parking your vehicle and your
trailer on a hill:1. Press the brake pedal, but do not shift into P (Park) yet. Turn
the wheels into the curb if
facing downhill or into traffic if
facing uphill.
2. Have someone place chocks under the trailer wheels.
3. When the wheel chocks are in place, gradually release the
brake pedal to allow the chocks
to absorb the load of the trailer.
4. Reapply the brake pedal. Then apply the parking brake and
shift into P (Park).
5. Release the brake pedal.
Leaving After Parking on a Hill
1. Apply and hold the brake pedal.
.Start the engine.
. Shift into a gear.
. Release the parking brake.
2. Let up on the brake pedal. 3. Drive slowly until the trailer is
clear of the chocks.
4. Stop and have someone pick up and store the chocks.
Maintenance When Trailer
Towing
The vehicle needs service more
often when used to tow trailers. See
Maintenance Schedule 0324. It is
especially important to check the
automatic transmission fluid, engine
oil, axle lubricant, belts, cooling
system, and brake system before
and during each trip.
Check periodically that all nuts and
bolts on the trailer hitch are tight.
Engine Cooling When Trailer
Towing
The cooling system may temporarily
overheat during severe operating
conditions. See Engine Overheating
0 247.
Trailer Towing
Caution
Towing a trailer improperly can
damage the vehicle and result in
costly repairs not covered by the
vehicle warranty. To tow a trailer
correctly, follow the directions in
this section and see your dealer
for important information about
towing a trailer with the vehicle.
Trailer Weight
{Warning
Never exceed the towing capacity
for your vehicle.
Safe trailering requires monitoring
the weight, speed, altitude, road
grades, outside temperature,
dimensions of the front of the trailer,
and how frequently the vehicle is
used to tow a trailer.

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-13557849) -
2020 - CRC - 6/25/19
250 Vehicle Care
Brake Fluid
The brake master cylinder reservoir
is filled with GM approved DOT 4
brake fluid as indicated on the
reservoir cap. SeeEngine
Compartment Overview 0235 for
the location of the reservoir.
Checking Brake Fluid
With the vehicle in P (Park) on a
level surface, the brake fluid level
should be between the minimum
and maximum marks on the brake
fluid reservoir.
There are only two reasons why the
brake fluid level in the reservoir may
go down:
. Normal brake lining wear. When
new linings are installed, the
fluid level goes back up. .
A fluid leak in the brake
hydraulic system. Have the
brake hydraulic system fixed.
With a leak, the brakes will not
work well.
Always clean the brake fluid
reservoir cap and the area around
the cap before removing it.
Do not top off the brake fluid.
Adding fluid does not correct a leak.
If fluid is added when the linings are
worn, there will be too much fluid
when new brake linings are
installed. Add or remove fluid, as
necessary, only when work is done
on the brake hydraulic system.
{Warning
If too much brake fluid is added, it
can spill on the engine and burn,
if the engine is hot enough. You
or others could be burned, and
the vehicle could be damaged.
Add brake fluid only when work is
done on the brake hydraulic
system. When the brake fluid falls to a low
level, the brake warning light comes
on. See
Brake System Warning
Light 0121.
Brake fluid absorbs water over time
which degrades the effectiveness of
the brake fluid. Replace brake fluid
at the specified intervals to prevent
increased stopping distance. See
Maintenance Schedule 0324.
What to Add
Use only GM approved DOT 4
brake fluid from a clean, sealed
container. See Recommended
Fluids and Lubricants 0333.
{Warning
The wrong or contaminated brake
fluid could result in damage to the
brake system. This could result in
the loss of braking leading to a
possible injury. Always use the
proper GM approved brake fluid.

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-13557849) -
2020 - CRC - 6/25/19
Vehicle Care 251
Caution
If brake fluid is spilled on the
vehicle's painted surfaces, the
paint finish can be damaged.
Immediately wash off any painted
surface.
Battery - North America
The original equipment battery is
maintenance free. Do not remove
the cap and do not add fluid.
If equipped with a V6 engine, the
battery is under the trim panel on
the left side of the rear cargo area.
If equipped with an L4 engine, the
battery is under the hood. See
Engine Compartment Overview
0235. Refer to the replacement
number on the original battery label
when a new battery is needed.
The battery is an Absorbed Glass
Mat (AGM) 12-volt battery.
Installation of a standard 12-volt
battery will result in reduced 12-volt
battery life. When using a 12-volt battery
charger on the 12-volt AGM battery,
some chargers have an AGM
battery setting on the charger.
If available, use the AGM setting on
the charger, to limit charge voltage
to 14.8 volts.
{Warning
WARNING:
Battery posts,
terminals, and related
accessories contain lead and lead
compounds, chemicals known to
the State of California to cause
cancer and birth defects or other
reproductive harm. Batteries also
contain other chemicals known to
the State of California to cause
cancer. WASH HANDS AFTER
HANDLING. For more information
go to www.P65Warnings.ca.gov/
passenger-vehicle.
See California Proposition
65 Warning 0231 and the back
cover. Stop/Start System
This vehicle has a Stop/Start
system to shut off the engine to help
conserve fuel. See
Stop/Start
System 0178.
Vehicle Storage
{Warning
Batteries have acid that can burn
you and gas that can explode.
You can be badly hurt if you are
not careful. See Jump Starting -
North America 0306 for tips on
working around a battery without
getting hurt.
Infrequent Usage: Remove the
12-volt battery black, negative (−)
cable from the battery to keep the
battery from running down.
Extended Storage: Remove the
12-volt battery black, negative (−)
cable from the battery or use a
battery trickle charger.
Remember to reconnect the battery
when ready to drive the vehicle.

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-13557849) -
2020 - CRC - 6/25/19
260 Vehicle Care
Caution
Spilling liquid on any electrical
component on the vehicle may
damage it. Always keep the
covers on any electrical
component.
The vehicle may not be equipped
with all of the fuses, relays, and
features shown.Fuses Usage
1 –
2 –
3 ABS pump
5 –
6 Rear closure Fuses Usage
7 Fog lamp
8 Memory control module
9 Heated windshield
10 Seat lumbar 11 DC DC converter 1

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-13557849) -
2020 - CRC - 6/25/19
306 Vehicle Care
Stop as soon as possible and check
that the spare tire is correctly
inflated after being installed on the
vehicle. The compact spare tire is
designed for temporary use only.
The vehicle will perform differently
with the spare tire installed and it is
recommended that the vehicle
speed be limited to 80 km/h
(50 mph). To conserve the tread of
the spare tire, have the standard tire
repaired or replaced as soon as
convenient and return the spare tire
to the storage area.
When using a compact spare tire,
the AWD (if equipped), ABS, and
Traction Control systems may
engage until the spare tire is
recognized by the vehicle,
especially on slippery roads. Adjust
driving to reduce possible
wheel slip.Caution
When the compact spare is
installed, do not take the vehicle
through an automatic car wash
with guide rails. The compact
spare can get caught on the rails
which can damage the tire, wheel,
and other parts of the vehicle.
Do not use the compact spare on
other vehicles.
Do not mix the compact spare tire or
wheel with other wheels or tires.
They will not fit. Keep the spare tire
and its wheel together.
Caution
Tire chains will not fit the compact
spare. Using them can damage
the vehicle and the chains. Do not
use tire chains on the compact
spare.
Jump Starting
Jump Starting - North
America
For more information about the
vehicle battery, see Battery - North
America 0251.
If the battery has run down, try to
use another vehicle and some
jumper cables to start your vehicle.
Be sure to use the following steps to
do it safely.
{Warning
WARNING: Battery posts,
terminals, and related
accessories contain lead and lead
compounds, chemicals known to
the State of California to cause
cancer and birth defects or other
reproductive harm. Batteries also
contain other chemicals known to
the State of California to cause
cancer. WASH HANDS AFTER
(Continued)

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-13557849) -
2020 - CRC - 6/25/19
Vehicle Care 313
Appearance Care
Exterior Care
Locks
Locks are lubricated at the factory.
Use a de-icing agent only when
absolutely necessary, and have the
locks greased after using. See
Recommended Fluids and
Lubricants0333.
Washing the Vehicle
To preserve the vehicle's finish,
wash it often and out of direct
sunlight.
Caution
Do not use petroleum-based,
acidic, or abrasive cleaning
agents as they can damage the
vehicle's paint, metal, or plastic
parts. If damage occurs, it would
not be covered by the vehicle
warranty. Approved cleaning
products can be obtained from
(Continued)
Caution (Continued)
your dealer. Follow all
manufacturer directions regarding
correct product usage, necessary
safety precautions, and
appropriate disposal of any
vehicle care product.
Caution
Avoid using high-pressure
washes closer than 30 cm (12 in)
to the surface of the vehicle. Use
of power washers exceeding
8 274 kPa (1,200 psi) can result
in damage or removal of paint
and decals.
Caution
Do not power wash any
component under the hood that
has this
esymbol.
This could cause damage that
would not be covered by the
vehicle warranty.
If using an automatic car wash,
follow the car wash instructions. The
windshield wiper and rear window
wiper, if equipped, must be off.
Remove any accessories that may
be damaged or interfere with the car
wash equipment.
Rinse the vehicle well, before
washing and after, to remove all
cleaning agents completely. If they
are allowed to dry on the surface,
they could stain.
Dry the finish with a soft, clean
chamois or an all-cotton towel to
avoid surface scratches and water
spotting.

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-13557849) -
2020 - CRC - 6/25/19
Index 365
IndexA
Accessories andModifications . . . . . . . . . . . . . . . . . . 232
Accessory Power . . . . . . . . . . . . . . . 181
Active Fuel Management . . . . . . . 182
Adaptive Cruise Control . . . . . . . . 196
Adaptive Forward Lighting (AFL) . . . . . . . . . . . . . . . . . 149
Adaptive Forward Lighting (AFL) Light . . . . . . . . . . . . . . . . . . . . 127
Add-On Electrical Equipment . . . 229
Additional Information OnStar . . . . . . . . . . . . . . . . . . . . . . . 356
Additional Maintenance
and Care . . . . . . . . . . . . . . . . . . . . . . 330
Adjustments Lumbar, Front Seats . . . . . . . . . . . . 43
Thigh Support . . . . . . . . . . . . . . . . . . 43
Air Cleaner/Filter, Engine . . . . . . . 242
Air Conditioning . . . . . . . . . . . . . . . . 156
Air Filter, Passenger
Compartment . . . . . . . . . . . . . . . . . 162
Air Vents . . . . . . . . . . . . . . . . . . . . . . . 161
Airbag System Check . . . . . . . . . . . . . . . . . . . . . . . . . . 71
How Does an AirbagRestrain? . . . . . . . . . . . . . . . . . . . . . 64
Passenger Sensing System . . . . 65 Airbag System (cont'd)
What Makes an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 63
What Will You See after an
Airbag Inflates? . . . . . . . . . . . . . . . 64
When Should an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 62
Where Are the Airbags? . . . . . . . . 61
Airbags
Adding Equipment to theVehicle . . . . . . . . . . . . . . . . . . . . . . . . 70
Passenger Status Indicator . . . .118
Readiness Light . . . . . . . . . . . . . . .118
Servicing Airbag-Equipped Vehicles . . . . . . . . . . . . . . . . . . . . . . . 70
System Check . . . . . . . . . . . . . . . . . . 59
Alarm Vehicle Security . . . . . . . . . . . . . . . . 29
Alert Lane Change . . . . . . . . . . . . . . . . . 213
Side Blind Zone (SBZA) . . . . . . 213
All-Season Tires . . . . . . . . . . . . . . . . 266
All-Wheel Drive . . . . . . . . . . . . 187, 252
Antilock Brake System (ABS) . . . 188 Warning Light . . . . . . . . . . . . . . . . . 122
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . . . 313
Interior . . . . . . . . . . . . . . . . . . . . . . . . 317

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-13557849) -
2020 - CRC - 6/25/19
370 Index
High-Beam On Light . . . . . . . . . . . . 127
High-Speed Operation . . . . . . . . . . 273
Hill and Mountain Roads . . . . . . . . 169
Hill Start Assist (HSA) . . . . . . . . . . 190
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . 233
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
How to Wear Seat BeltsProperly . . . . . . . . . . . . . . . . . . . . . . . . 53
HVAC . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
I
Ignition Positions . . . . . . . . . . . . . . . 176
Immobilizer . . . . . . . . . . . . . . . . . . . . . . 30
Indicator Pedestrian Ahead . . . . . . . . . . . . 124
Vehicle Ahead . . . . . . . . . . . . . . . . 123
Infants and Young Children,
Restraints . . . . . . . . . . . . . . . . . . . . . . 73
Information Publication Ordering . . . . . . . . . . 349
Infotainment . . . . . . . . . . . . . . . . . . . . 155
Infotainment System . . . . . . . . . . . . 353
Instrument Cluster . . . . . . . . . . . . . . 107
Instrument Panel Overview . . . . . . . 5
Interior Rearview Mirrors . . . . . . . . . 33
Introduction . . . . . . . . . . . . . . . . . . . . . . . 2
J
Jump Starting - North
America . . . . . . . . . . . . . . . . . . . . . . . 306
K
Keyless EntryRemote (RKE) System . . . . . . . . . . 8
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
L
Labeling, Tire Sidewall . . . . . . . . . . 267
Lamps Daytime Running (DRL) . . . . . . 148
Dome . . . . . . . . . . . . . . . . . . . . . . . . . 151
Exterior Controls . . . . . . . . . . . . . . 147
Exterior Lamps OffReminder . . . . . . . . . . . . . . . . . . . 148
Exterior Lighting Battery Saver . . . . . . . . . . . . . . . . . . . . . . . 154
Front Turn Signal . . . . . . . . . . . . . 257
Malfunction Indicator (Check Engine) . . . . . . . . . . . . . .119
On Reminder . . . . . . . . . . . . . . . . . 128
Reading . . . . . . . . . . . . . . . . . . . . . . 152
Lane Change Alert (LCA) . . . . . . . 213
Lane Keep Assist (LKA) . . . . . . . . 215
Lane Keep Assist Light . . . . . . . . . 123
Lap-Shoulder Belt . . . . . . . . . . . . . . . 55 LATCH System
Replacing Parts after a
Crash . . . . . . . . . . . . . . . . . . . . . . . . . 85
LATCH, Lower Anchors and Tethers for Children . . . . . . . . . . . . 78
LED Lighting . . . . . . . . . . . . . . . . . . . . 256
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Lighting Adaptive Forward . . . . . . . . . . . . . 149
Entry . . . . . . . . . . . . . . . . . . . . . . . . . 152
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
Illumination Control . . . . . . . . . . . 151
LED . . . . . . . . . . . . . . . . . . . . . . . . . . 256
Lights Adaptive Forward Lighting(AFL) Light . . . . . . . . . . . . . . . . . . 127
Airbag Readiness . . . . . . . . . . . . . .118
Antilock Brake System (ABS) Warning . . . . . . . . . . . . . . 122
Brake System Warning . . . . . . . 121
Charging System . . . . . . . . . . . . . .119
Check Engine (Malfunction Indicator) . . . . . . . . . . . . . . . . . . . . .119
Cruise Control . . . . . . . . . . . . . . . . 128
Door Ajar . . . . . . . . . . . . . . . . . . . . . 128
Electric Parking Brake . . . . . . . . 122
Engine Coolant Temperature Warning . . . . . . . 125