2015 BUICK REGAL Owner's Manual

Black plate (18,1)Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576024) - 2015 - CRC - 9/15/14
1-18 In Brief
Universal Remote System
If equipped, this system provides a
way to replace up to three remote
control transmitters used to activate
devices such as garage door
openers, security systems, and
home automation devices.
Read the instructions completely
before attempting to program the
Universal Remote system. Because
of the steps involved, it may be
helpful to have another person
available to assist with programming
the Universal Remote system.
SeeUniversal Remote System on
page 5-53.
Sunroof
For vehicles with a sunroof, the
sunroof only operates when the
ignition is in ON/RUN or ACC/
ACCESSORY or in Retained
Accessory Power (RAP). See
Retained Accessory Power (RAP)
on page 9-23.
To open or close the sunroof, press
switch (1) to the first detent position. To express open or close the
sunroof with the safety function
enabled, press the open or close
sunroof switch (1) to the second
detent position and release. To stop
the movement, press the switch
again.
To automatically tilt or close the
sunroof, press the tilt open or close
sunroof switch (2).
If an object is in the path of the
sunroof while it is closing, the
anti-pinch feature will detect the
object and stop the sunroof. The
sunroof will then return to the
full-open or vent position.
The sunroof glass panel cannot be
opened or closed if the vehicle has
an electrical failure.
See
Sunroof on page 2-22.

Black plate (19,1)Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576024) - 2015 - CRC - 9/15/14
In Brief 1-19
eAssist Features
eAssist®Overview
If the vehicle has eAssist, there are
several additional features that
contribute to increased efficiency.
Vehicles with eAssist have an
automatic engine start/stop feature.
This feature saves fuel by shutting
the engine off when the vehicle is
stopped. When the engine shuts off
automatically, all the accessories
will continue to operate normally. In
very hot or cold conditions, the
engine will only shut off
automatically part of the time. See
Starting the Engine on page 9-18.
There are two air conditioning
settings available. The comfort
setting maximizes cabin comfort.The eco setting maximizes
efficiency allowing more frequent,
and longer engine stops than the
comfort setting. See
Dual Automatic
Climate Control System on
page 8-1.
This vehicle has a Hill Start Assist
(HSA) feature, which may be useful
when the vehicle is stopped on a
grade. See Hill Start Assist (HSA)
on page 9-34.
Vehicles with eAssist have a slightly
different instrument cluster, which
includes an AUTO STOP indicator
on the tachometer. See Instrument
Cluster (Uplevel Cluster) on
page 5-12 orInstrument Cluster
(Base Level Cluster) on page 5-8.
The eAssist system uses a high
voltage battery, which is cooled with
air drawn from the vehicle interior.
The cold air intake for the battery is
located behind the rear seat, on the
filler panel. Do not cover the intake.
See Battery on page 10-26.
High Voltage Safety
Information
Vehicles with eAssist have a
standard 12-volt battery and a high
voltage battery. Only a trained
service technician with the proper
knowledge and tools should inspect,
test, or replace the high voltage
battery. See your dealer if the high
voltage battery needs service.

Black plate (20,1)Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576024) - 2015 - CRC - 9/15/14
1-20 In Brief
In emergency situations, first
responders can cut the two clearly
labeled cut points in the engine
compartment to disable the
high voltage battery and air bag
systems—do not cut the high
voltage cable.
Automatic Engine Start/
Stop Feature
Vehicles with eAssist have an
automatic engine start/stop feature.
After the engine is started and has
reached operating temperature, the
auto stop feature may cause the
engine to turn off when the brake
pedal is applied and the vehicle
comes to a complete stop. When
the brake pedal is released, or the
accelerator pedal is applied, the
engine will restart. The engine will
continue to run until the next
auto stop.
To restart the engine during the auto
stop, release the brake pedal or
press the accelerator pedal. The engine starts immediately. The
vehicle continues to run until the
next stop.
AUTO STOP on the tachometer
signifies that the engine is in auto
stop mode. See
Tachometer on
page 5-15 for more information.
A chime will sound when the driver
door is opened while in auto stop
mode. Remember to shift to P (Park)
and turn the ignition to LOCK/OFF
before exiting the vehicle.
See Starting the Engine on
page 9-18.
Regenerative Braking
Regenerative braking takes some of
the energy from the moving vehicle
and turns it into electrical energy.
This energy is then stored in the
vehicle's high voltage battery
system, contributing to increased
fuel efficiency.
The system works whenever the
accelerator pedal is released, and
increases the energy captured as
more brake pedal is applied.
Battery
This vehicle has a standard 12-volt
battery. Refer to the replacement
number on the original battery label
when a new standard 12-volt battery
is needed.
Vehicles with eAssist also have a
high voltage battery. Only a trained
service technician with the proper
knowledge and tools should inspect,
test, or replace the high voltage
battery. See your dealer if the high
voltage battery needs service. See
Battery on page 10-26.
Service
Never try to do your own service on
eAssist components. You can be
injured and the vehicle can be
damaged if you try to do your own
service work. Service and repair of
these high voltage components
should only be performed by a
trained service technician with the
proper knowledge and tools. See
Doing Your Own Service Work on
page 10-3.

Black plate (21,1)Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576024) - 2015 - CRC - 9/15/14
In Brief 1-21
Performance and
Maintenance
Traction Control/
Electronic Stability
Control
The traction control system limits
wheel slip. The system turns on
automatically every time the vehicle
is started.
The StabiliTrak system assists with
directional control of the vehicle in
difficult driving conditions. The
system turns on automatically every
time the vehicle is started.
.To turn off traction control, press
and release the TCS/StabiliTrak
button on the center stack.
i
illuminates and the appropriate
DIC message is displayed. See
Ride Control System Messages
on page 5-45.
.Press and release the TCS/
StabiliTrak button again to turn
on traction control.
.To turn off both traction control
and StabiliTrak, press and hold
the TCS/StabiliTrak button, on
the center stack, until
iandg
illuminate in the instrument
cluster and the appropriate DIC
message is displayed. SeeRide
Control System Messages on
page 5-45.
.Press and release the TCS/
StabiliTrak button to turn on both
systems.
See Traction Control/Electronic
Stability Control on page 9-35.
Tire Pressure Monitor
This vehicle may have a Tire
Pressure Monitor System (TPMS).
The low tire pressure warning light
alerts to a significant loss in
pressure of one of the vehicle's
tires. If the warning light comes on,
stop as soon as possible and inflate
the tires to the recommended
pressure shown on the Tire and
Loading Information label. See
Vehicle Load Limits on page 9-10.
The warning light will remain on until
the tire pressure is corrected.

Black plate (22,1)Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576024) - 2015 - CRC - 9/15/14
1-22 In Brief
The low tire pressure warning light
may come on in cool weather when
the vehicle is first started, and then
turn off as the vehicle is driven. This
may be an early indicator that the
tire pressures are getting low and
the tires need to be inflated to the
proper pressure.
The TPMS does not replace normal
monthly tire maintenance. Maintain
the correct tire pressures.
SeeTire Pressure Monitor System
on page 10-50.
Engine Oil Life System
The engine oil life system calculates
engine oil life based on vehicle use
and displays the CHANGE ENGINE
OIL SOON message when it is time
to change the engine oil and filter.
The oil life system should be reset
to 100% only following an oil
change. Resetting the Oil Life System
1. Using the DIC controls on the
right side of the steering wheel,
display REMAINING OIL LIFE
on the DIC. See Driver
Information Center (DIC) (Base
Level Cluster) on page 5-32 or
Driver Information Center (DIC)
(Uplevel Cluster) on page 5-35.
When remaining oil life is low,
the CHANGE ENGINE OIL
SOON message will appear on
the display. See Engine Oil
Messages on page 5-41.
2. Press
Von the DIC controls and
hold down for a few seconds to
clear the CHANGE ENGINE OIL
SOON message and reset the
oil life at 100%.
Be careful not to reset the oil life
display accidentally at any time
other than after the oil is
changed. It cannot be reset
accurately until the next oil
change.
See Engine Oil Life System on
page 10-13.
E85 or FlexFuel
Vehicles with a yellow fuel cap can
use either unleaded gasoline or
ethanol fuel containing up to 85%
ethanol (E85). See E85 or FlexFuel
on page 9-61. For all other vehicles,
use only the unleaded gasoline
described under Fuel on page 9-59.
Driving for Better Fuel
Economy
Driving habits can affect fuel
mileage. Here are some driving tips
to get the best fuel economy
possible.
.Avoid fast starts and accelerate
smoothly.
.Brake gradually and avoid
abrupt stops.
.Avoid idling the engine for long
periods of time.
.When road and weather
conditions are appropriate, use
cruise control.

Black plate (23,1)Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576024) - 2015 - CRC - 9/15/14
In Brief 1-23
.Always follow posted speed
limits or drive more slowly when
conditions require.
.Keep vehicle tires properly
inflated.
.Combine several trips into a
single trip.
.Replace the vehicle's tires with
the same TPC Spec number
molded into the tire's sidewall
near the size.
.Follow recommended scheduled
maintenance.
Roadside Assistance
Program
U.S.: 1-800-252-1112
TTY Users (U.S. Only):
1-888-889-2438
Canada: 1-800-268-6800
New Buick owners are automatically
enrolled in the Roadside Assistance
Program.
SeeRoadside Assistance Program
on page 13-5.
OnStar®
This vehicle may be equipped with a
comprehensive, in-vehicle system
that can connect to a live OnStar
Advisor for Emergency, Security,
Navigation, Connection, and
Diagnostic Services. OnStar
services may require a paid
subscription. See OnStar Overview
on page 14-1.

Black plate (24,1)Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576024) - 2015 - CRC - 9/15/14
1-24 In Brief
2NOTES

Black plate (1,1)Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576024) - 2015 - CRC - 9/15/14
Keys, Doors, and Windows 2-1
Keys, Doors, and
Windows
Keys and Locks
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Remote Keyless Entry (RKE)System . . . . . . . . . . . . . . . . . . . . . . 2-2
Remote Keyless Entry (RKE) System Operation . . . . . . . . . . . 2-3
Remote Vehicle Start . . . . . . . . . 2-9
Door Locks . . . . . . . . . . . . . . . . . . 2-10
Power Door Locks . . . . . . . . . . . 2-11
Delayed Locking . . . . . . . . . . . . . 2-11
Automatic Door Locks . . . . . . . 2-12
Lockout Protection . . . . . . . . . . . 2-12
Safety Locks . . . . . . . . . . . . . . . . . 2-12
Doors
Trunk . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Vehicle Security
Vehicle Security . . . . . . . . . . . . . . 2-15
Vehicle Alarm System . . . . . . . 2-15 Immobilizer . . . . . . . . . . . . . . . . . . 2-17
Immobilizer Operation (Key
Access) . . . . . . . . . . . . . . . . . . . . 2-17
Immobilizer Operation (Keyless Access) . . . . . . . . . . . 2-17
Exterior Mirrors
Convex Mirrors . . . . . . . . . . . . . . 2-18
Power Mirrors . . . . . . . . . . . . . . . . 2-19
Folding Mirrors . . . . . . . . . . . . . . . 2-19
Heated Mirrors . . . . . . . . . . . . . . . 2-19
Interior Mirrors
Interior Rearview Mirrors . . . . . 2-19
Automatic Dimming Rearview
Mirror . . . . . . . . . . . . . . . . . . . . . . . 2-19
Windows
Windows . . . . . . . . . . . . . . . . . . . . . 2-20
Power Windows . . . . . . . . . . . . . 2-20
Sun Visors . . . . . . . . . . . . . . . . . . . 2-22
Roof
Sunroof . . . . . . . . . . . . . . . . . . . . . . 2-22
Keys and Locks
Keys
{Warning
Leaving children in a vehicle with
an ignition key or Remote
Keyless Entry (RKE) transmitter is
dangerous and children or others
could be seriously injured or
killed. They could operate the
power window or other controls or
make the vehicle move. The
windows will function with the key
in the ignition or with the RKE
transmitter in the vehicle, and
children or others could be caught
in the path of a closing window.
Do not leave children in a vehicle
with the ignition key or an RKE
transmitter.