engine coolant BUICK REGAL 2018 Owner's Manual

Buick Regal Owner Manual (GMNA-Localizing-2nd Timed Print-U.S./Canada-
11486030) - 2018 - crc - 3/23/18
Introduction 3
{Danger
Danger indicates a hazard with a
high level of risk which will result
in serious injury or death.
{Warning
Warning indicates a hazard that
could result in injury or death.
Caution
Caution indicates a hazard that
could result in property or vehicle
damage.
A circle with a slash through it is a
safety symbol which means“Do
Not,” “Do not do this,” or“Do not let
this happen.”
Symbols
The vehicle has components and
labels that use symbols instead of
text. Symbols are shown along with
the text describing the operation or
information relating to a specific
component, control, message,
gauge, or indicator.
M: Shown when the owner ’s
manual has additional instructions
or information.
*: Shown when the service
manual has additional instructions
or information.
0: Shown when there is more
information on another page —
“see page.” Vehicle Symbol Chart
Here are some additional symbols
that may be found on the vehicle
and what they mean. See the
features in this manual for
information.
9:
Airbag Readiness Light
#:Air Conditioning
!:Antilock Brake System (ABS)
$:Brake System Warning Light
":Charging System
I: Cruise Control
`:Do Not Puncture
^:Do Not Service
B:Engine Coolant Temperature
O:Exterior Lamps
_: Flame/Fire Prohibited
.:Fuel Gauge
+: Fuses
3:Headlamp High/Low-Beam
Changer
j: ISOFIX/LATCH System Child
Restraints

Buick Regal Owner Manual (GMNA-Localizing-2nd Timed Print-U.S./Canada-
11486030) - 2018 - crc - 3/23/18
38 Keys, Doors, and Windows
.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 030.
. Use Keyless Access. See
“Keyless Access Operation” in
Remote Keyless Entry (RKE)
System Operation 030.
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-2nd Timed Print-U.S./Canada-
11486030) - 2018 - crc - 3/23/18
Instruments and Controls 117
Instruments and
Controls
Controls
Steering Wheel Adjustment . . . 118
Steering Wheel Controls . . . . . . 118
Heated Steering Wheel . . . . . . . 118
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Windshield Wiper/Washer . . . . 118
Rear Window Wiper/Washer . . . . . . . . . . . . . . . . . . . . . . 119
Compass . . . . . . . . . . . . . . . . . . . . . 120
Clock . . . . . . . . . . . . . . . . . . . . . . . . . 120
Power Outlets . . . . . . . . . . . . . . . . 120
Wireless Charging . . . . . . . . . . . . 121
Warning Lights, Gauges, and
Indicators
Warning Lights, Gauges, and Indicators . . . . . . . . . . . . . . . . . . . 123
Instrument Cluster . . . . . . . . . . . . 124
Speedometer . . . . . . . . . . . . . . . . . 128
Odometer . . . . . . . . . . . . . . . . . . . . . 128
Tachometer . . . . . . . . . . . . . . . . . . . 128
Fuel Gauge . . . . . . . . . . . . . . . . . . . 129
Engine Coolant Temperature
Gauge . . . . . . . . . . . . . . . . . . . . . . 130
Seat Belt Reminders . . . . . . . . . 130 Airbag Readiness Light . . . . . . . 131
Passenger Airbag Status
Indicator . . . . . . . . . . . . . . . . . . . . 132
Charging System Light . . . . . . . 132
Malfunction Indicator Lamp (Check Engine Light) . . . . . . . . 133
Brake System Warning Light . . . . . . . . . . . . . . . . . . . . . . . . 135
Electric Parking Brake Light . . . . . . . . . . . . . . . . . . . . . . . . 135
Service Electric Parking Brake Light . . . . . . . . . . . . . . . . . . . . . . . . 135
Antilock Brake System (ABS) Warning Light . . . . . . . . . . . . . . . 136
Lane Keep Assist (LKA) Light . . . . . . . . . . . . . . . . . . . . . . . . 136
Vehicle Ahead Indicator . . . . . . 136
Traction Off Light . . . . . . . . . . . . . 137
StabiliTrak OFF Light . . . . . . . . . 137
Traction Control System (TCS)/ StabiliTrak Light . . . . . . . . . . . . . 137
Engine Coolant Temperature Warning Light . . . . . . . . . . . . . . . 138
Tire Pressure Light . . . . . . . . . . . 138
Engine Oil Pressure Light . . . . 139
Low Fuel Warning Light . . . . . . 139
Security Light . . . . . . . . . . . . . . . . . 139
High-Beam On Light . . . . . . . . . . 139
Adaptive Forward Lighting (AFL) Light . . . . . . . . . . . . . . . . . . 140 Front Fog Lamp Light . . . . . . . . . 140
Lamps On Reminder . . . . . . . . . 140
Cruise Control Light . . . . . . . . . . 140
Door Ajar Light . . . . . . . . . . . . . . . 141
Information Displays
Driver Information
Center (DIC) . . . . . . . . . . . . . . . . 141
Head-Up Display (HUD) . . . . . . 145
Vehicle Messages
Vehicle Messages . . . . . . . . . . . . 149
Engine Power Messages . . . . . 149
Vehicle Speed Messages . . . . . 150
Vehicle Personalization
Vehicle Personalization . . . . . . . 150
Universal Remote System
Universal Remote System . . . . 155
Universal Remote System Programming . . . . . . . . . . . . . . . 155
Universal Remote System Operation . . . . . . . . . . . . . . . . . . . 157

Buick Regal Owner Manual (GMNA-Localizing-2nd Timed Print-U.S./Canada-
11486030) - 2018 - crc - 3/23/18
130 Instruments and Controls
Engine Coolant
Temperature Gauge
Uplevel Metric
Uplevel English
This gauge shows the engine
coolant temperature.
If the gauge pointer moves toward
the warning area at the high end of
the gauge, the engine is too hot.
The engine coolant temperature
warning light comes on when the
engine is too hot. See Engine
Coolant Temperature Warning Light
0 138.
This reading indicates the same
thing as the warning light. It means
that the engine coolant has
overheated. If the vehicle has been
operating under normal driving conditions, pull off the road, stop the
vehicle, and turn off the engine as
soon as possible. See
Engine
Overheating 0256.
Seat Belt Reminders
Driver Seat Belt Reminder
Light
There is a driver seat belt reminder
light on the instrument cluster.
When the vehicle is started, this
light flashes and a chime may come
on to remind the driver to fasten
their seat belt. Then the light stays
on solid until the belt is buckled.
This cycle may continue several
times if the driver remains or
becomes unbuckled while the
vehicle is moving.

Buick Regal Owner Manual (GMNA-Localizing-2nd Timed Print-U.S./Canada-
11486030) - 2018 - crc - 3/23/18
138 Instruments and Controls
SeeTraction Control/Electronic
Stability Control 0201.
Engine Coolant
Temperature Warning
Light
This light comes on briefly while
starting the vehicle.
If it does not, have the vehicle
serviced by your dealer. If the
system is working normally the
indicator light goes off.
Caution
The engine coolant temperature
warning light indicates that the
vehicle has overheated. Driving
with this light on can damage the
(Continued)
Caution (Continued)
engine and it may not be covered
by the vehicle warranty. See
Engine Overheating0256.
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 0256.
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 0281.
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 0284.

Buick Regal Owner Manual (GMNA-Localizing-2nd Timed Print-U.S./Canada-
11486030) - 2018 - crc - 3/23/18
190 Driving and Operating
The vehicle has a fuel saving stop/
start system to shut off the engine to
help conserve fuel.
Auto Engine Stop/Start
When the brakes are applied and
the vehicle is at a complete stop,
the engine may turn off. When
stopped, the tachometer displays
AUTO STOP. SeeTachometer
0 128. When the brake pedal is
released or the accelerator pedal is
pushed, the engine will restart.
Engine Heater
The engine coolant heater,
if available, can help in cold weather
conditions at or below −18 °C (0 °F)
for easier starting and better fuel
economy during engine warm-up.
Plug in the coolant heater at least
four hours before starting the
vehicle. An internal thermostat in
the plug-end of the cord will prevent
engine coolant heater operation at
temperatures above −18 °C (0 °F).
To Use the Engine Coolant
Heater
1. Turn off the engine.
2. Open the hood and unwrap the
electrical cord.
The electrical cord is located
on the passenger side of the
engine compartment, between
the fender and the air cleaner.
Check the heater cord for
damage. If it is damaged, do
not use it. See your dealer for
a replacement. Inspect the
cord for damage yearly. 3. Plug it into a normal, grounded
110-volt AC outlet.
{Warning
Improper use of the heater cord
or an extension cord can damage
the cord and may result in
overheating and fire.
. Plug the cord into a
three-prong electrical utility
receptacle that is protected
by a ground fault detection
function. An ungrounded
outlet could cause an
electric shock.
. Use a weatherproof,
heavy-duty, 15 amp-rated
extension cord if needed.
Failure to use the
recommended extension
cord in good operating
condition, or using a
damaged heater or
extension cord, could make
(Continued)

Buick Regal Owner Manual (GMNA-Localizing-2nd Timed Print-U.S./Canada-
11486030) - 2018 - crc - 3/23/18
234 Driving and Operating
The vehicle can tow in D (Drive).
Shift the transmission to a lower
gear if the transmission shifts too
often under heavy loads and/or hilly
conditions.
When towing at higher altitudes,
engine coolant will boil at a lower
temperature than at lower altitudes.
If the engine is turned off
immediately after towing at high
altitude on steep uphill grades, the
vehicle could show signs similar to
engine overheating. To avoid this,
let the engine run, preferably on
level ground, with the transmission
in P (Park) for a few minutes before
turning the engine off. If the
overheat warning comes on, see
Engine Overheating0256.
Parking on Hills
{Warning
To prevent serious injury or death,
always park your vehicle and
trailer on a level surface when
possible. 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 0332. 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
0 256.

Buick Regal Owner Manual (GMNA-Localizing-2nd Timed Print-U.S./Canada-
11486030) - 2018 - crc - 3/23/18
Vehicle Care 245
1.Engine Air Cleaner/Filter 0251.
2. Engine Oil Fill Cap. See Engine Oil 0247.
3. Engine Oil Dipstick. See Engine Oil 0247.
4. Engine Cooling Fan (Out of View). See Cooling System
0 252.
5. Brake Fluid Reservoir. See Brake Fluid 0259.
6. Battery (Under Cover). See Battery - North America 0260.
7. Coolant Surge Tank and Pressure Cap. See Cooling
System 0252.
8. Remote Positive (+) Battery Terminal. See Jump Starting -
North America 0315.
9. Engine Compartment Fuse
Block 0268.
10. Windshield Washer Fluid Reservoir. See Washer Fluid
0 257.
11. Remote Negative (-) Ground Terminal. See Jump Starting -
North America 0315.

Buick Regal Owner Manual (GMNA-Localizing-2nd Timed Print-U.S./Canada-
11486030) - 2018 - crc - 3/23/18
Vehicle Care 247
1. Windshield Washer FluidReservoir. See Washer Fluid
0 257.
2. Engine Oil Fill Cap. See Engine Oil 0247.
3. Engine Oil Dipstick. See Engine Oil 0247.
4. Engine Cooling Fans (Out of View). See Cooling System
0 252
5. Brake Fluid Reservoir. See Brake Fluid 0259.
6. Engine Air Cleaner/Filter 0251.
7. Coolant Surge Tank and Pressure Cap. See Cooling
System 0252.
8. Remote Positive (+) Battery Terminal. See Jump Starting -
North America 0315.
9. Engine Compartment Fuse
Block 0268.
10. Remote Negative (-) Ground Terminal. See Jump Starting -
North America 0315.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 0249.
. 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
0244 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-2nd Timed Print-U.S./Canada-
11486030) - 2018 - crc - 3/23/18
252 Vehicle Care
3.6L V6 Engine
To inspect or replace the engine air
cleaner/filter: 1. Remove the seven screws on top of the engine air cleaner/
filter housing.
2. Lift the filter cover housing away from the engine air
cleaner/filter housing.
3. Pull out the filter.
4. Inspect or replace the engine air cleaner/filter.
5. Reverse Steps 1–3 to reinstall the filter cover housing.
{Warning
Operating the engine with the air
cleaner/filter off can cause you or
others to be burned. The air
cleaner not only cleans the air; it
helps to stop flames if the engine
backfires. Use caution when
working on the engine and do not
drive with the air cleaner/filter off.
Caution
If the air cleaner/filter is off, dirt
can easily get into the engine,
which could damage it. Always
have the air cleaner/filter in place
when driving.
Cooling System
The cooling system allows the
engine to maintain the correct
working temperature. When it is safe to lift the hood:
2.0L L4 Turbo Engine
1. Engine Cooling Fan (Out
of View)
2. Coolant Surge Tank and Pressure Cap