2018 BUICK REGAL bulb

Buick Regal Owner Manual (GMNA-Localizing-2nd Timed Print-U.S./Canada-
11486030) - 2018 - crc - 3/23/18
Instruments and Controls 149
If You Cannot See the HUD
Image When the Ignition Is On
Check that:
.Nothing is covering the
HUD lens.
. HUD brightness setting is not
too dim or too bright.
. HUD is adjusted to the proper
height.
. Polarized sunglasses are
not worn.
. Windshield and HUD lens are
clean.
If the HUD image is not correct,
contact your dealer.
The windshield is part of the HUD
system. See Windshield
Replacement 0263.
Vehicle Messages
Messages displayed on the DIC
indicate the status of the vehicle or
some action that may be needed to
correct a condition. Multiple
messages may appear one after
another.
The messages that do not require
immediate action can be
acknowledged and cleared by
pressing
V. The messages that
require immediate action cannot be
cleared until that action is
performed.
All messages should be taken
seriously; clearing the message
does not correct the problem.
If a SERVICE message appears,
see your dealer.
Follow the instructions given in the
messages. The system displays
messages regarding the following
topics:
. Service Messages
. Fluid Levels
. Vehicle Security .
Brakes
. Steering
. Ride Control Systems
. Driver Assistance Systems
. Cruise Control
. Lighting and Bulb Replacement
. Wiper/Washer Systems
. Doors and Windows
. Seat Belts
. Airbag Systems
. Engine and Transmission
. Tire Pressure
. Battery
Engine Power Messages
ENGINE/PROPULSION POWER
IS REDUCED
This message displays when the
vehicle's propulsion power is
reduced. Reduced propulsion power
can affect the vehicle's ability to
accelerate. If this message is on,
but there is no observed reduction

Buick Regal Owner Manual (GMNA-Localizing-2nd Timed Print-U.S./Canada-
11486030) - 2018 - crc - 3/23/18
162 Lighting
Hazard Warning Flashers
|:Press to make the front and
rear turn signal lamps flash on and
off. Press again to turn the
flashers off.
The hazard warning flashers turn on
automatically if the airbags deploy.
Turn and Lane-Change
Signals
Move the lever all the way up or
down to signal a turn.
An arrow on the instrument cluster
flashes in the direction of the turn or
lane change.
Raise or lower the lever until the
arrow starts to flash to signal a lane
change. Hold it there until the lane
change is completed. If the lever is
briefly pressed and released, the
turn signal flashes three times.
The turn and lane-change signal
can be turned off manually by
moving the lever back to its original
position. If after signaling a turn or lane
change the arrow flashes rapidly or
does not come on, a signal bulb
might be burned out.
Have any burned out bulbs
replaced. If the bulb is not burned
out, check the fuse. See
Fuses and
Circuit Breakers 0268.
Fog Lamps
The fog lamps button is on the
instrument panel to left of the
steering wheel.
To turn on the fog lamps, the ignition
and the headlamps or parking lamps
must be on.

Buick Regal Owner Manual (GMNA-Localizing-2nd Timed Print-U.S./Canada-
11486030) - 2018 - crc - 3/23/18
238 Driving and Operating
cluster will illuminate even if the
trailer is not properly connected or
the bulbs are burned out.
Trailer Tires
Special Trailer (ST) tires differ from
vehicle tires. Trailer tires are
designed with stiff sidewalls to help
prevent sway and to support heavy
loads. These features can make it
difficult to determine if the trailer tire
pressures are low only based on a
visual inspection.
Always check all trailer tire
pressures before each trip when the
tires are cool. Low trailer tire
pressure is a leading cause of trailer
tire blow-outs.
Trailer tires deteriorate over time.
The trailer tire sidewall will show the
week and year the tire was
manufactured. Many trailer tire
manufacturers recommend
replacing tires more than six
years old.Overloading is another leading
cause of trailer tire blow-outs. Never
load your trailer with more weight
than the tires are designed to
support. The load rating is located
on the trailer tire sidewall.
Always know the maximum speed
rating for the trailer tires before
driving. This may be significantly
lower than the vehicle tire speed
rating. The speed rating may be on
the trailer tire sidewall. If the speed
rating is not shown, the default
trailer tire speed rating is 105 km/h
(65 mph).
Conversions and
Add-Ons
Add-On Electrical
Equipment
{Warning
The Data Link Connector (DLC) is
used for vehicle service and
Emission Inspection/Maintenance
testing. See
Malfunction
Indicator Lamp (Check Engine
Light) 0133. A device connected
to the DLC —such as an
aftermarket fleet or
driver-behavior tracking device —
may interfere with vehicle
systems. This could affect vehicle
operation and cause a crash.
Such devices may also access
information stored in the vehicle’s
systems.

Buick Regal Owner Manual (GMNA-Localizing-2nd Timed Print-U.S./Canada-
11486030) - 2018 - crc - 3/23/18
240 Vehicle Care
Vehicle Care
General Information
General Information . . . . . . . . . . 241
California Proposition65 Warning . . . . . . . . . . . . . . . . . 241
California Perchlorate Materials Requirements . . . . . 242
Accessories and Modifications . . . . . . . . . . . . . . . . 242
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . 242
Hood . . . . . . . . . . . . . . . . . . . . . . . . . 243
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . 244
Engine Oil . . . . . . . . . . . . . . . . . . . . 247
Engine Oil Life System . . . . . . . 249
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . 250
Engine Air Cleaner/Filter . . . . . . 251
Cooling System . . . . . . . . . . . . . . 252
Engine Overheating . . . . . . . . . . 256
Washer Fluid . . . . . . . . . . . . . . . . . 257
Brakes . . . . . . . . . . . . . . . . . . . . . . . 258
Brake Fluid . . . . . . . . . . . . . . . . . . . 259
Battery - North America . . . . . . 260
All-Wheel Drive . . . . . . . . . . . . . . . 261 Starter Switch Check . . . . . . . . . 261
Automatic Transmission Shift
Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . . . 261
Park Brake and P (Park)
Mechanism Check . . . . . . . . . . 261
Wiper Blade Replacement . . . . 262
Windshield Replacement . . . . . 263
Gas Strut(s) . . . . . . . . . . . . . . . . . . 263
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . . . 264
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . 265
Halogen Bulbs . . . . . . . . . . . . . . . . 265
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . . . . . . . . . 265
Headlamps . . . . . . . . . . . . . . . . . . . 265
Fog Lamps . . . . . . . . . . . . . . . . . . . 266
Front Turn Signal Lamps . . . . . 266
Taillamps, Turn Signal, Stoplamps, and Back-Up
Lamps . . . . . . . . . . . . . . . . . . . . . . 266
Electrical System
Electrical System Overload . . . 267
Fuses and Circuit Breakers . . . 268
Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 268 Instrument Panel Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 272
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 274
All-Season Tires . . . . . . . . . . . . . . 275
Winter Tires . . . . . . . . . . . . . . . . . . 275
Low-Profile Tires . . . . . . . . . . . . . 275
Tire Sidewall Labeling . . . . . . . . 276
Tire Designations . . . . . . . . . . . . . 278
Tire Terminology andDefinitions . . . . . . . . . . . . . . . . . . 278
Tire Pressure . . . . . . . . . . . . . . . . . 281
Tire Pressure for High-Speed Operation . . . . . . . . . . . . . . . . . . . 282
Tire Pressure Monitor System . . . . . . . . . . . . . . . . . . . . . . 283
Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . . . 284
Tire Inspection . . . . . . . . . . . . . . . . 287
Tire Rotation . . . . . . . . . . . . . . . . . 287
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . 288
Buying New Tires . . . . . . . . . . . . . 289
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . . 290
Uniform Tire Quality Grading . . . . . . . . . . . . . . . . . . . . . 291
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . 292
Wheel Replacement . . . . . . . . . . 293

Buick Regal Owner Manual (GMNA-Localizing-2nd Timed Print-U.S./Canada-
11486030) - 2018 - crc - 3/23/18
Vehicle Care 265
Bulb Replacement
For the proper type of replacement
bulbs, or any bulb changing
procedure not listed in this section,
contact your dealer.
Halogen Bulbs
{Warning
Halogen bulbs have pressurized
gas inside and can burst if you
drop or scratch the bulb. You or
others could be injured. Be sure
to read and follow the instructions
on the bulb package.
High Intensity Discharge
(HID) Lighting
{Warning
The High Intensity Discharge
(HID) lighting system operates at
a very high voltage. If you try to
service any of the system
components, you could be
seriously injured. Have your
dealer or a qualified technician
service them.
After an HID headlamp bulb has
been replaced, the beam might be a
slightly different shade than it was
originally. This is normal.
Headlamps
Driver Side Shown, Passenger Side Similar
1. Low Beam
2. High Beam
Low-Beam Headlamp/Daytime
Running Lamp (Base)
1. For the driver side bulb,remove the windshield washer
bottle filler neck by firmly
pulling it straight up and out of
the bottle.
2. Remove the cap from the back of the headlamp assembly.

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
Vehicle Care 267
2. Remove the rear cargo areatrim panel push pin.
3. Pull the rear cargo area trim panel back to gain access to
the taillamp assembly.4. Remove the two nuts thatsecure the taillamp assembly.
5. Remove the taillamp assembly and disconnect the wiring
harness connector.
6. Turn the bulb socket counterclockwise to remove it.
7. Pull the bulb from the socket.
8. Install a new bulb.
9. Turn the bulb socket clockwise to install it.
10. Reverse Steps 2–4 to reinstall the taillamp assembly.
Electrical System
Electrical System
Overload
The vehicle has fuses and circuit
breakers to protect against an
electrical system overload.
When the current electrical load is
too heavy, the circuit breaker opens
and closes, protecting the circuit
until the current load returns to
normal or the problem is fixed. This
greatly reduces the chance of circuit
overload and fire caused by
electrical problems.
Fuses and circuit breakers protect
power devices in the vehicle.
Replace a bad fuse with a new one
of the identical size and rating.
If there is a problem on the road and
a fuse needs to be replaced, the
same amperage fuse can be
borrowed. Choose some feature of
the vehicle that is not needed to use
and replace it as soon as possible.

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