ignition BUICK REGAL 2014 Repair Manual

Black plate (46,1)Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
6081497) - 2014 - CRC 2nd Edition - 11/22/13
9-46 Driving and Operating
A message indicating that cruise is
disengaging will appear on the DIC
and the ACC active symbol will not
be displayed when ACC is no longer
active.
Notification to Resume ACC
ACC will maintain a follow gap
behind a detected vehicle and slow
your vehicle to a stop behind that
vehicle.
If the stopped vehicle ahead has
driven away and ACC has not
resumed, the vehicle ahead symbol
will flash as a reminder to check
traffic ahead before proceeding. In
addition, three beeps will sound.
See“Go Notifier” in“Collision/
Detection Systems” underVehicle
Personalization on page 5-48.
When the vehicle ahead drives
away, press RES+ or the
accelerator pedal to resume cruise
control. If stopped for more than
two minutes or if the driver door is
opened and the driver safety belt is
unbuckled, the ACC automatically
applies the electric parking brake to hold the vehicle. The electric
parking brake status light will turn
on. See
Parking Brake on
page 9-33. To resume ACC and
release the electric parking brake,
press the accelerator pedal.
A DIC warning message may
display indicating to shift to P (Park)
before exiting the vehicle. See
Vehicle Messages on page 5-39.
{Warning
If ACC has stopped the vehicle,
and if ACC is disengaged, turned
off, or canceled, the vehicle will
no longer be held at a stop. The
vehicle can move. When ACC is
holding the vehicle at a stop,
always be prepared to manually
apply the brakes.
{Warning
Leaving the vehicle without
placing it in P (Park) can be
dangerous. Do not leave the
vehicle while it is being held at a
stop by ACC. Always place the
vehicle in P (Park) and turn off
the ignition before leaving the
vehicle.
ACC Override
If using the accelerator pedal while
ACC is active, a warning message
on the DIC will indicate that
automatic braking will not occur.
See Vehicle Messages on
page 5-39. ACC will resume
operation when the accelerator
pedal is not being pressed.

Black plate (48,1)Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
6081497) - 2014 - CRC 2nd Edition - 11/22/13
9-48 Driving and Operating
Other Vehicle Lane Changes
ACC will not detect a vehicle ahead
until it is completely in the lane. The
brakes may need to be manually
applied.
Do Not Use ACC on Hills and
When Towing a Trailer
Do not use ACC when driving on
steep hills or when towing a trailer.
ACC will not detect a vehicle in the
lane while driving on steep hills. The
driver will often need to take over
acceleration and braking on steep
hills, especially when towing a
trailer. If the brakes are applied, the
ACC disengages.
Disengaging ACC
There are three ways to
disengage ACC:
.Step lightly on the brake pedal.
.Press*.
.Press].
Erasing Speed Memory
The cruise control set speed is
erased from memory if
]is
pressed or if the ignition is
turned off. Cleaning the Sensing System
The radar sensor on the front of the
vehicle can become blocked by
snow, ice, dirt, or mud. This area
needs to be cleaned for ACC to
operate properly.
For cleaning instructions, see
“Washing the Vehicle”
under
Exterior Care on page 10-86.
System operation may also be
limited under snow, heavy rain,
or road spray conditions.

Black plate (1,1)Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
6081497) - 2014 - CRC 2nd Edition - 11/22/13
Vehicle Care 10-1
Vehicle Care
General Information
General Information . . . . . . . . . . 10-2
California Proposition65 Warning . . . . . . . . . . . . . . . . . 10-2
California Perchlorate Materials Requirements . . . . 10-3
Accessories and Modifications . . . . . . . . . . . . . . . 10-3
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . 10-3
Hood . . . . . . . . . . . . . . . . . . . . . . . . 10-4
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . 10-6
Engine Oil . . . . . . . . . . . . . . . . . . 10-11
Engine Oil Life System . . . . . 10-13
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . 10-15
Manual Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . 10-15
Hydraulic Clutch . . . . . . . . . . . . 10-15
Engine Air Cleaner/Filter . . . . 10-16
Cooling System . . . . . . . . . . . . 10-17
Engine Coolant . . . . . . . . . . . . . 10-19
Engine Overheating . . . . . . . . 10-22 Washer Fluid . . . . . . . . . . . . . . . 10-23
Brakes . . . . . . . . . . . . . . . . . . . . . 10-24
Brake Fluid . . . . . . . . . . . . . . . . . 10-25
Battery . . . . . . . . . . . . . . . . . . . . . 10-27
All-Wheel Drive . . . . . . . . . . . . . 10-28
Starter Switch Check . . . . . . . 10-28
Automatic Transmission Shift
Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . 10-28
Ignition Transmission Lock Check . . . . . . . . . . . . . . . . . . . . . 10-29
Park Brake and P (Park) Mechanism Check . . . . . . . . 10-29
Wiper Blade Replacement . . . . . . . . . . . . . . 10-29
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . 10-30
Bulb Replacement
Bulb Replacement . . . . . . . . . . 10-31
Halogen Bulbs . . . . . . . . . . . . . . 10-31
High Intensity Discharge(HID) Lighting . . . . . . . . . . . . . 10-31
Headlamps, Front Turn Signal and Parking
Lamps . . . . . . . . . . . . . . . . . . . . 10-31
Fog Lamps . . . . . . . . . . . . . . . . . 10-32 Taillamps, Turn Signal,
Stoplamps, and Back-Up
Lamps . . . . . . . . . . . . . . . . . . . . 10-33
License Plate Lamp . . . . . . . . 10-33
Replacement Bulbs . . . . . . . . . 10-34
Electrical System
High Voltage Devices and Wiring . . . . . . . . . . . . . . . . . . . . . 10-34
Electrical System Overload . . . . . . . . . . . . . . . . . . 10-35
Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . 10-35
Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . 10-36
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . 10-39
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . 10-41
All-Season Tires . . . . . . . . . . . . 10-42
Winter Tires . . . . . . . . . . . . . . . . 10-42
Summer Tires . . . . . . . . . . . . . . 10-43
Tire Sidewall Labeling . . . . . . 10-43
Tire Designations . . . . . . . . . . . 10-45
Tire Terminology and
Definitions . . . . . . . . . . . . . . . . 10-46
Tire Pressure . . . . . . . . . . . . . . . 10-48

Black plate (28,1)Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
6081497) - 2014 - CRC 2nd Edition - 11/22/13
10-28 Vehicle Care
All-Wheel Drive
Transfer Case
Under normal driving conditions,
transfer case fluid does not require
changing or checking unless there
is a fluid leak or unusual noise.
If required, have the transfer case
serviced by your dealer.
Starter Switch Check
{Warning
When you are doing this
inspection, the vehicle could
move suddenly. If the vehicle
moves, you or others could be
injured.
1. Before starting this check, be sure there is enough room
around the vehicle. 2. Apply both the parking brake
and the regular brake.
Do not use the accelerator
pedal, and be ready to turn off
the engine immediately if it
starts.
3. For automatic transmission vehicles, try to start the engine
in each gear. The vehicle should
start only in P (Park) or
N (Neutral). If the vehicle starts
in any other position, contact
your dealer for service.
For manual transmission
vehicles, put the shift lever in
Neutral, push the clutch pedal
down halfway, and try to start
the engine. The vehicle should
start only when the clutch pedal
is pushed down all the way to
the floor. If the vehicle starts
when the clutch pedal is not
pushed all the way down,
contact your dealer for service.
Automatic Transmission
Shift Lock Control
Function Check
{Warning
When you are doing this
inspection, the vehicle could
move suddenly. If the vehicle
moves, you or others could be
injured.
1. Before starting this check, be sure there is enough room
around the vehicle. It should be
parked on a level surface.
2. Apply the parking brake. Be ready to apply the regular brake
immediately if the vehicle begins
to move.
3. With the engine off, turn the ignition on, but do not start the
engine. Without applying the
regular brake, try to move the
shift lever out of P (Park) with

Black plate (29,1)Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
6081497) - 2014 - CRC 2nd Edition - 11/22/13
Vehicle Care 10-29
normal effort. If the shift lever
moves out of P (Park), contact
your dealer for service.
Ignition Transmission
Lock Check
While parked, and with the parking
brake set, try to turn the ignition to
LOCK/OFF in each shift lever
position.
.For automatic transmission
vehicles, the ignition should turn
to LOCK/OFF only when the
shift lever is in P (Park). The
ignition key should come out
only in LOCK/OFF.
.For manual transmission
vehicles, the ignition key should
come out only in LOCK/OFF.
Contact your dealer if service is
required.
Park Brake and P (Park)
Mechanism Check
{Warning
When you are doing this check,
the vehicle could begin to move.
You or others could be injured
and property could be damaged.
Make sure there is room in front
of the vehicle in case it begins to
roll. Be ready to apply the regular
brake at once should the vehicle
begin to move.
Park on a fairly steep hill, with the
vehicle facing downhill. Keeping
your foot on the regular brake, set
the parking brake.
.To check the parking brake's
holding ability: With the engine
running and the transmission in
N (Neutral), slowly remove foot
pressure from the regular brake
pedal. Do this until the vehicle is
held by the parking brake only.
.To check the P (Park)
mechanism's holding ability:
With the engine running, shift to
P (Park). Then release the
parking brake followed by the
regular brake.
Contact your dealer if service is
required.
Wiper Blade Replacement
Windshield wiper blades should be
inspected for wear or cracking.
It is a good idea to clean the wiper
blade assembly on a regular basis.
When worn, or when cleaning is
ineffective, replace the wiper blade.
For proper windshield wiper blade
length and type, see Maintenance
Replacement Parts on page 11-12.
{Caution
Allowing the wiper arm to touch
the windshield when no wiper
blade is installed could damage
(Continued)

Black plate (37,1)Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
6081497) - 2014 - CRC 2nd Edition - 11/22/13
Vehicle Care 10-37
The vehicle may not be equipped
with all of the fuses, relays, and
features shown.Fuse
Number Usage
1 Transmission Control Module
2 Engine Control Module
3 Not Used
4 Not Used
5 Ignition, Transmission
Control Module,
Engine Control
Module
6 Windshield Wiper
7 BPIM (eAssist Only)
8 Not Used
9 Fuel Injection, Ignition System
10 Engine Control Module Fuse
Number Usage
11 Oxygen Sensor
12 Starter
13 Fuel System Control Module
14 Trunk Release
15 MGU Coolant Pump (eAssist Only)
16 Heated Steering Wheel
17 Not Used
18 BPIM (eAssist Only)
19 Not Used
20 Not Used
21 Rear Power Windows
22 Antilock Brake System Valve
23 Obstacle Detection Fuse
Number Usage
24 Front Power Windows
25 Power Outlets
26 Antilock Brake System Pump
27 Electric Parking Brake
28 Heated Rear Window
29 Left-Hand Seat Lumbar
30 Right-Hand Seat Lumbar
31 A/C Clutch
32 Body Control Module 6
33 Heated Front Seats
34 Sunroof
35 Infotainment System
36 Adaptive Cruise

Black plate (39,1)Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
6081497) - 2014 - CRC 2nd Edition - 11/22/13
Vehicle Care 10-39
Fuse
Number Usage
71 Not Used
Relay
Number Usage
1 Air Conditioning Control
2 Starter
3 Not Used
4 Front Wiper (Step 2)
5 Front Wiper (Step 1, Interval)
6 Right Low Beam Headlamp/DRL
7 Main Relay
8 Auxiliary Heater Pump (eAssist Only)
9 Cooling Fan
10 Cooling Fan Relay
Number Usage
11 Transmission Auxiliary Pump
(eAssist Only)
12 Not Used
13 Cooling Fan
14 High Intensity Discharge
Headlamp/Left Low
Beam
Headlamp/DRL
15 Ignition
16 Secondary AIR Pump (eAssist Only)
17 Window/Mirror DefogInstrument Panel Fuse
Block
The instrument panel fuse block is
located in the instrument panel, on
the driver side of the vehicle.
To access the fuses, open the
storage compartment. Press in on
the sides of the compartment to
release it from the instrument panel.
Pull the door toward you to release
it from the hinge.

Black plate (40,1)Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
6081497) - 2014 - CRC 2nd Edition - 11/22/13
10-40 Vehicle Care
Instrument Panel Fuse Block
Number Usage
1 Suspension Control Module/Universal
Garage Door
Opener/ESC
2 Body Control Module 1
3 Body Control Module 5
4 Radio Number Usage
5 Radio Displays, Park Assist,
Infotainment,
Module Tunnel
Control
6 Instrument Panel Power Outlet
7 Console Power Outlet
8 Body Control Module 3
9 Body Control Module 4
10 Body Control Module 8
11 Front Heater Ventilation Air
Conditioning/Blower
12 Right-Hand Power Front Seat
13 Left-Hand Power Front Seat Number Usage
14 Diagnostic Link Connector
15 Airbag
16 Steering Wheel Controls
17 Heating Ventilation Air Conditioning
Controller
18 Service Fuse, Logistic Relay
19 Memory Seats
20 Automatic Occupant Sensing
21 Instrument Cluster
22 Discrete Logic Ignition
Switch/PEPS
23 Body Control Module 6
24 Body Control Module 2

Black plate (52,1)Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
6081497) - 2014 - CRC 2nd Edition - 11/22/13
10-52 Vehicle Care
located on the instrument cluster.
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. SeeVehicle Load
Limits on page 9-10.
A message to check the pressure in
a specific tire displays in the Driver
Information Center (DIC). The low
tire pressure warning light and the
DIC warning message come on at
each ignition cycle until the tires are
inflated to the correct inflation
pressure. Using the DIC, tire
pressure levels can be viewed. For
additional information and details
about the DIC operation and
displays see Driver Information
Center (DIC) (Base Level Cluster)
on page 5-33 orDriver Information
Center (DIC) (Uplevel Cluster) on
page 5-35.
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
could be an early indicator that the air pressure is getting low and
needs to be inflated to the proper
pressure.
A Tire and Loading Information
label, attached to your vehicle,
shows the size of the original
equipment tires and the correct
inflation pressure for the tires when
they are cold. See
Vehicle Load
Limits on page 9-10, for an example
of the Tire and Loading Information
label and its location. Also see Tire
Pressure on page 10-48.
The TPMS can warn about a low
tire pressure condition but it does
not replace normal tire
maintenance. See Tire Inspection
on page 10-55, Tire Rotation on
page 10-55 andTires on
page 10-41.
{Caution
Tire sealant materials are not all
the same. A non-approved tire
sealant could damage the TPMS
(Continued)
Caution (Continued)
sensors. TPMS sensor damage
caused by using an incorrect tire
sealant is not covered by the
vehicle warranty. Always use only
the GM approved tire sealant
available through your dealer or
included in the vehicle.

Black plate (53,1)Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
6081497) - 2014 - CRC 2nd Edition - 11/22/13
Vehicle Care 10-53
TPMS Malfunction Light and
Message
The TPMS will not function properly
if one or more of the TPMS sensors
are missing or inoperable. When the
system detects a malfunction, the
low tire warning light flashes for
about one minute and then stays on
for the remainder of the ignition
cycle. A DIC warning message also
displays. The malfunction light and
DIC warning message come on at
each ignition cycle until the problem
is corrected. Some of the conditions
that can cause these to come
on are:
.One of the road tires has been
replaced with the spare tire. The
spare tire does not have a
TPMS sensor. The malfunction
light and DIC message should
go off after the road tire is
replaced and the sensor
matching process is performed
successfully. See“TPMS Sensor
Matching Process” later in this
section.
.The TPMS sensor matching
process was not done or not
completed successfully after
rotating the tires. The
malfunction light and the DIC
message should go off after
successfully completing the
sensor matching process. See
"TPMS Sensor Matching
Process" later in this section.
.One or more TPMS sensors are
missing or damaged. The
malfunction light and the DIC
message should go off when the
TPMS sensors are installed and
the sensor matching process is
performed successfully. See
your dealer for service.
.Replacement tires or wheels do
not match the original equipment
tires or wheels. Tires and wheels
other than those recommended
could prevent the TPMS from
functioning properly. See Buying
New Tires on page 10-57.
.Operating electronic devices or
being near facilities using radio
wave frequencies similar to the
TPMS could cause the TPMS
sensors to malfunction.
If the TPMS is not functioning
properly it cannot detect or signal a
low tire condition. See your dealer
for service if the TPMS malfunction
light and DIC message comes on
and stays on.
TPMS Sensor Matching
Process
Each TPMS sensor has a unique
identification code. The identification
code needs to be matched to a new
tire/wheel position after rotating the
vehicle’s tires or replacing one or
more of the TPMS sensors. The
TPMS sensor matching process
should also be performed after
replacing a spare tire with a road
tire containing the TPMS sensor.
The malfunction light and the DIC
message should go off at the next
ignition cycle. The sensors are
matched to the tire/wheel positions,