2018 BUICK REGAL headlamp

Buick Regal Owner Manual (GMNA-Localizing-2nd Timed Print-U.S./Canada-
11486030) - 2018 - crc - 3/23/18
266 Vehicle Care
3. Disconnect the electricalconnector.
4. Remove the bulb socket from the headlamp assembly.
5. Reverse Steps 1–4 to install.
High/Low-Beam Headlamps
(Uplevel)
The high/low-beam headlamps on
the uplevel headlamp system are
Light Emitting Diode (LED) and
should be replaced by your dealer.
Fog Lamps
To replace the fog lamp bulb: 1. Locate the bulb assembly under the front fascia.
2. Disconnect the electrical connector from the bulb
assembly.
3. Remove the bulb by turning it counterclockwise and pulling it
straight out of the assembly.
4. Install the new bulb by turning it clockwise into the assembly.
5. Reconnect the electrical connector to the bulb
assembly.
Front Turn Signal Lamps
Sidemarkers, daytime running
lamps and turn signal lamps are
LEDs and cannot be changed.
See your dealer.
Taillamps, Turn Signal,
Stoplamps, and Back-Up
Lamps
Driver Side Shown, Passenger
Side Similar
To replace any one of these bulbs: 1. Open the liftgate. See Liftgate
0 42.

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
270 Vehicle Care
FusesUsage
12 Rear window defogger
13 Heated mirrors
14 –
15 –
16 Front wipers
17 Passenger power seat
18 Sun shade
19 Driver power seat
21 Sunroof
22 Rear wiper
23 Auto headlamp leveling
24 –
26 Transmission control module/Ignition
27 Instrument panel/ Ignition
28 –
29 Rear vision camera/ Ventilation Fuses
Usage
30 Malfunction indicator lamp/Shift solenoid
32 Canister vent/Video processing module
33 Front heated seats
34 Rear heated seats
35 All wheel drive damping control
36 Fuel module
38 –
39 –
40 Steering column lock
41 –
43 Heated steering wheel
44 Headlamp leveling
45 –
46 Engine control module/Ignition
47 –
48 Cooling fan/DC DC converter 2 Fuses
Usage
49 RDCM
50 –
51 –
52 –
53 –
54 –
55 –
56 Starter
57 –
58 –
59 Left LED lamps
60 Cooling fan
61 –
62 –
63 –
65 A/C HEV
67 –
68 –

Buick Regal Owner Manual (GMNA-Localizing-2nd Timed Print-U.S./Canada-
11486030) - 2018 - crc - 3/23/18
Vehicle Care 271
FusesUsage
69 Right LED lamp/ Right high-beam
headlamps
70 Left high-beam headlamps
72 Starter pinion
74 –
75 Engine control module
76 Powertrain –off
engine
77 –
78 Horn
79 Washer pump
81 Transmission control module/ Engine
control module
82 –
83 Ignition coils
84 Coil
85 Shunt 60A
86 – Fuses
Usage
87 SAI fuel heater
88 Aeroshutter
89 –
91 –
92 TPIM motor generator/TPIM
93 Keyless entry control module
95 Water change air coolant pump
96 Fuel heater
97 –
99 –
Relays Usage
4 –
20 Rear defogger
25 Front wiper control
31 Run/Crank
37 Front wiper speed
42 – Relays
Usage
64 Starter motor
66 Powertrain
71 Right LED high beam
73 AC clutch
80 Starter pinion
90 Water change air coolant pump
94 –
98 Fuel heater

Buick Regal Owner Manual (GMNA-Localizing-2nd Timed Print-U.S./Canada-
11486030) - 2018 - crc - 3/23/18
Vehicle Care 293
Wheel Replacement
Replace any wheel that is bent,
cracked, or badly rusted or
corroded. If wheel nuts keep coming
loose, the wheel, wheel bolts, and
wheel nuts should be replaced.
If the wheel leaks air, replace it.
Some aluminum wheels can be
repaired. See your dealer if any of
these conditions exist.
Your dealer will know the kind of
wheel that is needed.
Each new wheel should have the
same load-carrying capacity,
diameter, width, offset, and be
mounted the same way as the one it
replaces.
Replace wheels, wheel bolts, wheel
nuts, or Tire Pressure Monitor
System (TPMS) sensors with new
GM original equipment parts.{Warning
Using the wrong replacement
wheels, wheel bolts, or wheel
nuts can be dangerous. It could
affect the braking and handling of
the vehicle. Tires can lose air,
and cause loss of control, causing
a crash. Always use the correct
wheel, wheel bolts, and wheel
nuts for replacement.
Caution
The wrong wheel can also cause
problems with bearing life, brake
cooling, speedometer or
odometer calibration, headlamp
aim, bumper height, vehicle
ground clearance, and tire or tire
chain clearance to the body and
chassis.
Used Replacement Wheels
{Warning
Replacing a wheel with a used
one is dangerous. How it has
been used or how far it has been
driven may be unknown. It could
fail suddenly and cause a crash.
When replacing wheels, use a
new GM original equipment
wheel.
Tire Chains
{Warning
If the vehicle has 245/45R18 or
245/40R19 size tires, do not use
tire chains. There is not enough
clearance. Tire chains used on a
vehicle without the proper amount
of clearance can cause damage
to the brakes, suspension,
or other vehicle parts. The area
damaged by the tire chains could(Continued)

Buick Regal Owner Manual (GMNA-Localizing-2nd Timed Print-U.S./Canada-
11486030) - 2018 - crc - 3/23/18
338 Service and Maintenance
.To avoid break-down or failure to
start the vehicle, maintain a
battery with full cranking power.
. Trained dealer technicians have
the diagnostic equipment to test
the battery and ensure that the
connections and cables are
corrosion-free.
Belts
. Belts may need replacing if they
squeak or show signs of
cracking or splitting.
. Trained dealer technicians have
access to tools and equipment
to inspect the belts and
recommend adjustment or
replacement when necessary.
Brakes
Brakes stop the vehicle and are
crucial to safe driving.
. Signs of brake wear may include
chirping, grinding, or squealing
noises, or difficulty stopping. .
Trained dealer technicians have
access to tools and equipment
to inspect the brakes and
recommend quality parts
engineered for the vehicle.
Fluids
Proper fluid levels and approved
fluids protect the vehicle’s systems
and components. See
Recommended Fluids and
Lubricants 0340 for GM approved
fluids.
. Engine oil and windshield
washer fluid levels should be
checked at every fuel fill.
. Instrument cluster lights may
come on to indicate that fluids
may be low and need to be
filled.
Hoses
Hoses transport fluids and should
be regularly inspected to ensure
that there are no cracks or leaks.
With a multi-point inspection, your
dealer can inspect the hoses and
advise if replacement is needed. Lamps
Properly working headlamps,
taillamps, and brake lamps are
important to see and be seen on
the road.
.
Signs that the headlamps need
attention include dimming, failure
to light, cracking, or damage.
The brake lamps need to be
checked periodically to ensure
that they light when braking.
. With a multi-point inspection,
your dealer can check the lamps
and note any concerns.
Shocks and Struts
Shocks and struts help aid in control
for a smoother ride.
. Signs of wear may include
steering wheel vibration, bounce/
sway while braking, longer
stopping distance, or uneven
tire wear.
. As part of the multi-point
inspection, trained dealer
technicians can visually inspect
the shocks and struts for signs

Buick Regal Owner Manual (GMNA-Localizing-2nd Timed Print-U.S./Canada-
11486030) - 2018 - crc - 3/23/18
Index 373
Armrest Storage . . . . . . . . . . . . . . . . 114
Assistance Program,Roadside . . . . . . . . . . . . . . . . . . . . . . 350
Assistance Systems for Driving . . . . . . . . . . . . . . . . . . . . . . . . 217
Assistance Systems for Parking and Backing . . . . . . . . . . 214
Automatic Door Locks . . . . . . . . . . . . . . . . . . . . . 41
Forward Braking . . . . . . . . . . . . . . 219
Headlamp System . . . . . . . . . . . . 160
Transmission . . . . . . . . . . . . . . . . . 194
Transmission Fluid . . . . . . . . . . . 250
Automatic Transmission Manual Mode . . . . . . . . . . . . . . . . . 196
Shift Lock Control FunctionCheck . . . . . . . . . . . . . . . . . . . . . . . 261
B
BatteryExterior Lighting Battery
Saver . . . . . . . . . . . . . . . . . . . . . . . 165
Load Management . . . . . . . . . . . . 165
Power Protection . . . . . . . . . . . . . 165
Battery - North America . . . . 260, 315
Blade Replacement, Wiper . . . . . 262
Brake Parking, Electric . . . . . . . . . . . . . . 198 Brake (cont'd)
System Warning Light . . . . . . . . 135
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . 258 Antilock . . . . . . . . . . . . . . . . . . . . . . . 198
Assist . . . . . . . . . . . . . . . . . . . . . . . . . 200
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 259
Braking . . . . . . . . . . . . . . . . . . . . . . . . . 177 Automatic Forward . . . . . . . . . . . 219
Braking System
Front Pedestrian (FPB) . . . . . . . 220
Break-In, New Vehicle . . . . . . . . . . 186
Bulb Replacement Fog Lamps . . . . . . . . . . . . . . . . . . . 266
Front Turn Signal Lamps . . . . . 266
Halogen Bulbs . . . . . . . . . . . . . . . . 265
Headlamp Aiming . . . . . . . . . . . . . 264
Headlamps . . . . . . . . . . . . . . . . . . . 265
High Intensity Discharge(HID) Lighting . . . . . . . . . . . . . . . 265
Taillamps, Turn Signal, Stoplamps, and Back-up
Lamps . . . . . . . . . . . . . . . . . . . . . . 266
Buying New Tires . . . . . . . . . . . . . . . 289
C
Calibration . . . . . . . . . . . . . . . . . . . . . . 120
California Fuel Requirements . . . . . . . . . . . 228 California (cont'd)
Perchlorate Materials
Requirements . . . . . . . . . . . . . . . 242
California
Proposition
65 Warning . . . . . . . . . .241, 260, 315, Back Cover
Canadian Vehicle Owners . . . . . . . . 2
Capacities and Specifications . . . . . . . . . . . . . . . . . 344
Carbon Monoxide Engine Exhaust . . . . . . . . . . . . . . . 193
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . . 42
Winter Driving . . . . . . . . . . . . . . . . 181
Cargo Cover . . . . . . . . . . . . . . . . . . . . . . . . . .114
Tie-Downs . . . . . . . . . . . . . . . . . . . . .115
Caution, Danger, and Warning . . . . 2
Chains, Tire . . . . . . . . . . . . . . . . . . . . 293
Charging
Wireless . . . . . . . . . . . . . . . . . . . . . . 121
Charging System Light . . . . . . . . . 132
Check Engine Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . 133
Child Restraints Infants and Young Children . . . . . 93

Buick Regal Owner Manual (GMNA-Localizing-2nd Timed Print-U.S./Canada-
11486030) - 2018 - crc - 3/23/18
376 Index
Front Pedestrian Braking(FPB) System . . . . . . . . . . . . . . . . . 220
Front Seats Adjustment . . . . . . . . . . . . . . . . . . . . . 62
Heated and Ventilated . . . . . . . . . . 69
Front Storage . . . . . . . . . . . . . . . . . . . 113
Front Turn Signal Lamps . . . . . . . 266
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227 Additives . . . . . . . . . . . . . . . . . . . . . 228
Economy Driving . . . . . . . . . . . . . . . 28
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . 230
Filling the Tank . . . . . . . . . . . . . . . 229
Foreign Countries . . . . . . . . . . . . 228
Gauge . . . . . . . . . . . . . . . . . . . . . . . . 129
Low Fuel Warning Light . . . . . . . 139
Requirements, California . . . . . 228
Fuses Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 268
Fuses and Circuit Breakers . . . 268
Instrument Panel Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 272
G
Garage Door Opener . . . . . . . . . . . 155Programming . . . . . . . . . . . . . . . . . 155
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . 263 Gauges
Engine Coolant
Temperature . . . . . . . . . . . . . . . . 130
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Odometer . . . . . . . . . . . . . . . . . . . . . 128
Speedometer . . . . . . . . . . . . . . . . . 128
Tachometer . . . . . . . . . . . . . . . . . . . 128
Warning Lights and Indicators . . . . . . . . . . . . . . . . . . . 123
General Information Service and Maintenance . . . . . 330
Towing . . . . . . . . . . . . . . . . . . . . . . . . 231
Vehicle Care . . . . . . . . . . . . . . . . . . 241
Glove Box . . . . . . . . . . . . . . . . . . . . . . 112
GM Mobility Reimbursement Program . . . . . . . . . . . . . . . . . . . . . . . 350
H
Halogen Bulbs . . . . . . . . . . . . . . . . . . 265
Hazard Warning Flashers . . . . . . . 162
Head Restraints . . . . . . . . . . . . . . . . . 60
Head-up Display . . . . . . . . . . . . . . . . 145
Headlamps . . . . . . . . . . . . . . . . . . . . . 265
Adaptive ForwardLighting (AFL) . . . . . . . . . . . . . . . 161
Aiming . . . . . . . . . . . . . . . . . . . . . . . . 264
Automatic . . . . . . . . . . . . . . . . . . . . . 160
Bulb Replacement . . . . . . . . . . . . 265 Headlamps (cont'd)
Daytime Running
Lamps (DRL) . . . . . . . . . . . . . . . . 160
Flash-to-Pass . . . . . . . . . . . . . . . . . 160
High Intensity Discharge
(HID) Lighting . . . . . . . . . . . . . . . 265
High-Beam On Light . . . . . . . . . . 139
High/Low Beam Changer . . . . . 160
Lamps On Reminder . . . . . . . . . 140
Heated Steering Wheel . . . . . . . . . . . . . . . .118
Heated and Ventilated Front Seats . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Heated Mirrors . . . . . . . . . . . . . . . . . . . 53
Heater
Engine . . . . . . . . . . . . . . . . . . . . . . . . 190
Heating . . . . . . . . . . . . . . . . . . . . . . . . . 168
High-Beam On Light . . . . . . . . . . . . 139
High-Speed Operation . . . . . . . . . . 282
Hill and Mountain Roads . . . . . . . . 180
Hill Start Assist (HSA) . . . . . . . . . . 200
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . 243
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
How to Wear Seat Belts Properly . . . . . . . . . . . . . . . . . . . . . . . . 74
HVAC . . . . . . . . . . . . . . . . . . . . . . . . . . . 168