electrical BUICK REGAL 2018 Owner's Guide

Buick Regal Owner Manual (GMNA-Localizing-2nd Timed Print-U.S./Canada-
11486030) - 2018 - crc - 3/23/18
268 Vehicle Care
Headlamp Wiring
An electrical overload may cause
the lamps to go on and off, or in
some cases to remain off. Have the
headlamp wiring checked right away
if the lamps go on and off or
remain off.
Windshield Wipers
If the wiper motor overheats due to
heavy snow or ice, the windshield
wipers will stop until the motor cools
and will then restart.
Although the circuit is protected
from electrical overload, overload
due to heavy snow or ice may
cause wiper linkage damage.
Always clear ice and heavy snow
from the windshield before using the
windshield wipers.
If the overload is caused by an
electrical problem and not snow or
ice, be sure to get it fixed.
Fuses and Circuit
Breakers
The wiring circuits in the vehicle are
protected from short circuits by a
combination of fuses and circuit
breakers. This greatly reduces the
chance of damage caused by
electrical problems.
{Danger
Fuses and circuit breakers are
marked with their ampere rating.
Do not exceed the
specified amperage rating when
replacing fuses and circuit
breakers. Use of an oversized
fuse or circuit breaker can result
in a vehicle fire. You and others
could be seriously injured or
killed.
To check a fuse, look at the
silver-colored band inside the fuse.
If the band is broken or melted,
replace the fuse. Be sure to replace
a bad fuse with a new one of the
identical size and rating. Fuses of the same amperage can
be temporarily borrowed from
another fuse location, if a fuse goes
out. Replace the fuse as soon as
possible.
To identify and check fuses, circuit
breakers, and relays, see
Engine
Compartment Fuse Block 0268 and
Instrument Panel Fuse Block 0272.
Engine Compartment
Fuse Block
To remove the fuse block cover,
squeeze the three retaining clips on
the cover and lift it straight up.

Buick Regal Owner Manual (GMNA-Localizing-2nd Timed Print-U.S./Canada-
11486030) - 2018 - crc - 3/23/18
Vehicle Care 269
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-2nd Timed Print-U.S./Canada-
11486030) - 2018 - crc - 3/23/18
318 Vehicle Care
Caution
If the jumper cables are
connected or removed in the
wrong order, electrical shorting
may occur and damage the
vehicle. The repairs would not be
covered by the vehicle warranty.
Always connect and remove the
jumper cables in the correct order,
making sure that the cables do
not touch each other or other
metal.
Jumper Cable Removal
Reverse the sequence exactly when
removing the jumper cables.
After starting the disabled vehicle
and removing the jumper cables,
allow it to idle for several minutes.
Towing the Vehicle
Caution
Incorrectly towing a disabled
vehicle may cause damage. The
damage would not be covered by
the vehicle warranty.
Do not lash or hook to
suspension components. Use the
proper straps around the tires to
secure the vehicle.
Have the vehicle towed on a wheel
lift tow truck or flatbed car carrier.
If a wheel lift tow truck is used, the
drive wheels cannot contact the
road while the vehicle is being
towed. A wheel dolly must be used
to lift all drive wheels off the ground.
The vehicle is equipped with
specific attachment points to be
used by the towing provider. These
holes may be used to pull the
vehicle from a flat road surface onto
the flatbed tow truck.
Consult your dealer or a
professional towing service if the
disabled vehicle must be towed.
Recreational Vehicle
Towing
Recreational vehicle towing means
towing the vehicle behind another
vehicle, such as behind a motor
home. The two most common types

Buick Regal Owner Manual (GMNA-Localizing-2nd Timed Print-U.S./Canada-
11486030) - 2018 - crc - 3/23/18
Service and Maintenance 337
(3)Or every four years, whichever
comes first. If driving in dusty
conditions, inspect the filter at each
oil change or more often as needed.
(4) Or every five years, whichever
comes first. See Cooling System
0 252.
(5) Or every 10 years, whichever
comes first. Inspect for fraying,
excessive cracking, or damage;
replace, if needed.
(6) Replace brake fluid every three
years. See Brake Fluid 0259.Special Application
Services
.
Severe Commercial Use
Vehicles Only: Lubricate chassis
components every oil change.
. Have underbody flushing service
performed. See "Underbody
Maintenance" in Exterior Care
0 321.
Additional
Maintenance and Care
Your vehicle is an important
investment and caring for it properly
may help to avoid future costly
repairs. To maintain vehicle
performance, additional
maintenance services may be
required.
It is recommended that your dealer
perform these services —their
trained dealer technicians know
your vehicle best. Your dealer can
also perform a thorough
assessment with a multi-point
inspection to recommend when your
vehicle may need attention.
The following list is intended to
explain the services and conditions
to look for that may indicate
services are required.
Battery
The 12-volt battery supplies power
to start the engine and operate any
additional electrical accessories.

Buick Regal Owner Manual (GMNA-Localizing-2nd Timed Print-U.S./Canada-
11486030) - 2018 - crc - 3/23/18
Customer Information 355
.Vehicle make, model, and
model year
. Vehicle Identification
Number (VIN)
. Insurance company and policy
number
. General description of the
damage to the other vehicle
Choose a reputable repair facility
that uses quality replacement parts.
See “Collision Parts” earlier in this
section.
If the airbag has inflated, see What
Will You See after an Airbag
Inflates? 084.
Managing the Vehicle Damage
Repair Process
In the event that the vehicle requires
damage repairs, GM recommends
that you take an active role in its
repair. If you have a pre-determined
repair facility of choice, take the
vehicle there, or have it towed there.
Specify to the facility that any
required replacement collision parts
be original equipment parts, either
new Genuine GM parts or recycled original GM parts. Remember,
recycled parts will not be covered by
the GM vehicle warranty.
Insurance pays the bill for the repair,
but you must live with the repair.
Depending on your policy limits,
your insurance company may
initially value the repair using
aftermarket parts. Discuss this with
the repair professional, and insist on
Genuine GM parts. Remember,
if the vehicle is leased, you may be
obligated to have the vehicle
repaired with Genuine GM parts,
even if your insurance coverage
does not pay the full cost.
If another party's insurance
company is paying for the repairs,
you are not obligated to accept a
repair valuation based on that
insurance company's collision policy
repair limits, as you have no
contractual limits with that company.
In such cases, you can have control
of the repair and parts choices as
long as the cost stays within
reasonable limits.
Service Publications
Ordering Information
Service Manuals
Service Manuals have the diagnosis
and repair information on the
engines, transmission, axle,
suspension, brakes, electrical,
steering, body, etc.
Owner Information
Owner publications are written
specifically for owners and intended
to provide basic operational
information about the vehicle. The
Owner
’s Manual includes the
Maintenance Schedule for all
models.
In-Portfolio: Includes a Portfolio,
Owner ’s Manual, and Warranty
Manual.
RETAIL SELL PRICE: $35.00 –
$40.00 (U.S.) plus handling and
shipping fees.
Without Pouch: Owner ’s
Manual only.

Buick Regal Owner Manual (GMNA-Localizing-2nd Timed Print-U.S./Canada-
11486030) - 2018 - crc - 3/23/18
360 OnStar
OnStar
OnStar Overview
OnStar Overview . . . . . . . . . . . . . 360
OnStar Services
Emergency . . . . . . . . . . . . . . . . . . . 361
Security . . . . . . . . . . . . . . . . . . . . . . 362
Navigation . . . . . . . . . . . . . . . . . . . . 362
Connections . . . . . . . . . . . . . . . . . . 363
Diagnostics . . . . . . . . . . . . . . . . . . . 365
OnStar Additional Information
OnStar AdditionalInformation . . . . . . . . . . . . . . . . . . 366
OnStar Overview
=Voice Command Button
QBlue OnStar Button
>Red Emergency Button
This vehicle may be equipped with a
comprehensive, in-vehicle system
that can connect to an OnStar
Advisor for Emergency, Security,
Navigation, Connections, and
Diagnostics Services. OnStar
services may require a paid service
plan and data plan. OnStar requires
the vehicle battery and electrical
system, cellular service, and GPS
satellite signals to be available and
operating. OnStar acts as a link to
existing emergency service
providers. OnStar may collect
information about you and your
vehicle, including location
information. See OnStar User Terms, Privacy Statement, and
Software Terms for more details
including system limitations at
www.onstar.com (U.S.) or
www.onstar.ca (Canada).
The OnStar system status light is
next to the OnStar buttons. If the
status light is:
.
Solid Green: System is ready.
. Flashing Green: On a call.
. Red: Indicates a problem.
. Off: System is off. Press
Q
twice to speak with an OnStar
Advisor.
Press
Qor call 1-888-4ONSTAR
(1-888-466-7827) to speak to an
Advisor.
Functionality of the Voice Command
button may vary by vehicle and
region.

Buick Regal Owner Manual (GMNA-Localizing-2nd Timed Print-U.S./Canada-
11486030) - 2018 - crc - 3/23/18
OnStar 367
Advanced Vehicle Diagnostics,
Remote Services, Roadside
Assistance, Turn-by-Turn
Navigation, and Hands-Free Calling
are available on most vehicles. Not
all OnStar services are available
everywhere or on all vehicles. For
more information, a full description
of OnStar services, system
limitations, and OnStar User Terms,
Privacy Statement, and Software
Terms:
.Call 1-888-4ONSTAR
(1-888-466-7827).
. See www.onstar.com (U.S.).
. See www.onstar.ca (Canada).
. Call TTY 1-877-248-2080.
. Press
Qto speak with an
Advisor.
OnStar services cannot work unless
the vehicle is in a place where
OnStar has an agreement with a
wireless service provider for service
in that area. The wireless service
provider must also have coverage,
network capacity, reception, and
technology compatible with OnStar services. Service involving location
information about the vehicle cannot
work unless GPS signals are
available, unobstructed, and
compatible with the OnStar
hardware. OnStar services may not
work if the OnStar equipment is not
properly installed or it has not been
properly maintained. If equipment or
software is added, connected,
or modified, OnStar services may
not work. Other problems beyond
the control of OnStar
—such as
hills, tall buildings, tunnels, weather,
electrical system design and
architecture of the vehicle, damage
to the vehicle in a crash, or wireless
phone network congestion or
jamming —may prevent service.
See Radio Frequency Statement
0 356.
Services for People with
Disabilities
Advisors provide services to help
with physical disabilities and
medical conditions. Press
Qto help:
. Locate a gas station with an
attendant to pump gas.
. Find a hotel, restaurant, etc.,
that meets accessibility needs.
. Provide directions to the closest
hospital or pharmacy in urgent
situations.
TTY Users
OnStar has the ability to
communicate to deaf,
hard-of-hearing, or speech-impaired
customers while in the vehicle. The
available dealer-installed TTY
system can provide in-vehicle
access to all OnStar services,
except Virtual Advisor and OnStar
Turn-by-Turn Navigation.
OnStar Personal Identification
Number (PIN)
A PIN is needed to access some
OnStar services. The PIN will need
to be changed the first time when
speaking with an Advisor. To

Buick Regal Owner Manual (GMNA-Localizing-2nd Timed Print-U.S./Canada-
11486030) - 2018 - crc - 3/23/18
368 OnStar
change the OnStar PIN, contact an
OnStar Advisor by pressing
Qor
calling 1-888-4ONSTAR.
Warranty
OnStar equipment may be
warranted as part of the vehicle
warranty.
Languages
The vehicle can be programmed to
respond in multiple languages.
Press
Qand ask for an Advisor.
Advisors are available in English,
Spanish, and French. Available
languages may vary by country.
Potential Issues
OnStar cannot perform Remote
Door Unlock or Stolen Vehicle
Assistance after the vehicle has
been off continuously for 10 days
without an ignition cycle. If the
vehicle has not been started for
10 days, OnStar can contact
Roadside Assistance or a locksmith
to help gain access to the vehicle.
Global Positioning
System (GPS)
. Obstruction of the GPS can
occur in a large city with tall
buildings; in parking garages;
around airports; in tunnels and
underpasses; or in an area with
very dense trees. If GPS signals
are not available, the OnStar
system should still operate to
call OnStar. However, OnStar
could have difficulty identifying
the exact location.
. In emergency situations, OnStar
can use the last stored GPS
location to send to emergency
responders.
A temporary loss of GPS can cause
loss of the ability to send a
Turn-by-Turn Navigation route. The
Advisor may give a verbal route or
may ask for a call back after the
vehicle is driven into an open area.
Cellular and GPS Antennas
Cellular reception is required for
OnStar to send remote signals to
the vehicle. Do not place items over or near the antenna to prevent
blocking cellular and GPS signal
reception.
Unable to Connect to OnStar
Message
If there is limited cellular coverage
or the cellular network has reached
maximum capacity, this message
may come on. Press
Qto try the
call again or try again after driving a
few miles into another cellular area.
Vehicle and Power Issues
OnStar services require a vehicle
electrical system, wireless service,
and GPS satellite technologies to be
available and operating for features
to function properly. These systems
may not operate if the battery is
discharged or disconnected.
Add-on Electrical Equipment
The OnStar system is integrated
into the electrical architecture of the
vehicle. Do not add any electrical
equipment. See Add-On Electrical
Equipment 0238. Added electrical

Buick Regal Owner Manual (GMNA-Localizing-2nd Timed Print-U.S./Canada-
11486030) - 2018 - crc - 3/23/18
372 Index
IndexA
Accessories andModifications . . . . . . . . . . . . . . . . . . 242
Accessory Power . . . . . . . . . . . . . . . 191
Adaptive Cruise Control . . . . . . . . 206
Adaptive Forward Lighting (AFL) . . . . . . . . . . . . . . . . . 161
Adaptive Forward Lighting (AFL) Light . . . . . . . . . . . . . . . . . . . . 140
Add-On Electrical Equipment . . . 238
Additional Information
OnStar . . . . . . . . . . . . . . . . . . . . . . . 366
Additional Maintenance and Care . . . . . . . . . . . . . . . . . . . . . . 337
Adjustments Lumbar, Front Seats . . . . . . . . . . . . 63
Thigh Support . . . . . . . . . . . . . . . . . . 64
Air Cleaner/Filter, Engine . . . . . . . 251
Air Conditioning . . . . . . . . . . . . . . . . 168
Air Filter, Passenger Compartment . . . . . . . . . . . . . . . . . 173
Air Vents . . . . . . . . . . . . . . . . . . . . . . . 173
Airbag System Check . . . . . . . . . . . . . . . . . . . . . . . . . . 90
How Does an Airbag
Restrain? . . . . . . . . . . . . . . . . . . . . . 83
Passenger Sensing System . . . . 85 Airbag System (cont'd)
What Makes an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 83
What Will You See after an
Airbag Inflates? . . . . . . . . . . . . . . . 84
When Should an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 82
Where Are the Airbags? . . . . . . . . 81
Airbags
Adding Equipment to theVehicle . . . . . . . . . . . . . . . . . . . . . . . . 90
Passenger Status Indicator . . . 132
Readiness Light . . . . . . . . . . . . . . 131
Servicing Airbag-Equipped Vehicles . . . . . . . . . . . . . . . . . . . . . . . 89
System Check . . . . . . . . . . . . . . . . . . 79
Alarm Vehicle Security . . . . . . . . . . . . . . . . 50
Alert Lane Change . . . . . . . . . . . . . . . . . 223
Side Blind Zone (SBZA) . . . . . . 223
All-Season Tires . . . . . . . . . . . . . . . . 275
All-Wheel Drive . . . . . . . . . . . . 197, 261
Antilock Brake System (ABS) . . . 198 Warning Light . . . . . . . . . . . . . . . . . 136
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . . . 321
Interior . . . . . . . . . . . . . . . . . . . . . . . . 326

Buick Regal Owner Manual (GMNA-Localizing-2nd Timed Print-U.S./Canada-
11486030) - 2018 - crc - 3/23/18
Index 375
Driving (cont'd)Drunk . . . . . . . . . . . . . . . . . . . . . . . . . 177
For Better Fuel Economy . . . . . . . 28
Hill and Mountain Roads . . . . . . 180
If the Vehicle is Stuck . . . . . . . . . 182
Loss of Control . . . . . . . . . . . . . . . 179
Off-Road Recovery . . . . . . . . . . . 179
Vehicle Load Limits . . . . . . . . . . . 183
Wet Roads . . . . . . . . . . . . . . . . . . . 180
Winter . . . . . . . . . . . . . . . . . . . . . . . . 181
Dual Automatic Climate Control System . . . . . . . . . . . . . . . . 168
E
Electric Parking Brake . . . . . . . . . . 198
Electric Parking Brake Light . . . . 135
Electrical Equipment,Add-On . . . . . . . . . . . . . . . . . . . . . . . 238
Electrical System
Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 268
Fuses and Circuit Breakers . . . 268
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 272
Overload . . . . . . . . . . . . . . . . . . . . . 267
Emergency OnStar . . . . . . . . . . . . . . . . . . . . . . . 361 Engine
Air Cleaner/Filter . . . . . . . . . . . . . 251
Check Light (Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . 133
Compartment Overview . . . . . . . 244
Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . 130
Coolant Temperature Warning Light . . . . . . . . . . . . . . . 138
Cooling System . . . . . . . . . . . . . . . 252
Drive Belt Routing . . . . . . . . . . . . 345
Exhaust . . . . . . . . . . . . . . . . . . . . . . 193
Heater . . . . . . . . . . . . . . . . . . . . . . . . 190
Oil Life System . . . . . . . . . . . . . . . 249
Oil Pressure Light . . . . . . . . . . . . 139
Overheating . . . . . . . . . . . . . . . . . . 256
Power Messages . . . . . . . . . . . . . 149
Running While Parked . . . . . . . . 194
Starting . . . . . . . . . . . . . . . . . . . . . . . 188
Entry Lighting . . . . . . . . . . . . . . . . . . . 164
Equipment, Towing . . . . . . . . . . . . . 237
Event Data Recorders . . . . . . . . . . 358
Exit Lighting . . . . . . . . . . . . . . . . . . . . 164
Extended Parking . . . . . . . . . . . . . . . 193
Extender, Seat Belt . . . . . . . . . . . . . . 77
Exterior Lamp Controls . . . . . . . . . 159 Exterior Lamps Off Reminder . . . 160
Exterior Lighting Battery
Saver . . . . . . . . . . . . . . . . . . . . . . . . . 165
F
FeaturesMemory . . . . . . . . . . . . . . . . . . . . . . . . . 14
Filter, Engine Air Cleaner . . . . . . . . . . . 251
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 160
Flashers, Hazard Warning . . . . . . 162
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 294 Changing . . . . . . . . . . . . . . . . . . . . . 309
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 329
Fluid Automatic Transmission . . . . . . 250
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 259
Washer . . . . . . . . . . . . . . . . . . . . . . . 257
Fog Lamps . . . . . . . . . . . . . . . . . . . . . 162 Bulb Replacement . . . . . . . . . . . . 266
Folding Mirrors . . . . . . . . . . . . . . . . . . 53
Forward Automatic Braking . . . . . 219
Forward Collision Alert
(FCA) System . . . . . . . . . . . . . . . . . 217
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . 356
Front Fog Lamp Light . . . . . . . . . . . . . . . . . . . . . . . . . . 140