engine BUICK REGAL 2013 Owners Manual

Black plate (22,1)Buick Regal Owner Manual - 2013 - crc - 11/5/12
10-22 Vehicle Care
If the warning continues, pull over,
stop, and park the vehicle
right away.
If there is no sign of steam, idle the
engine for three minutes while
parked. If the warning is still
displayed, turn off the engine until it
cools down.
Power Steering Fluid
(2.0L L4 Engine)
SeeEngine Compartment Overview
on page 10‑5 for reservoir location.
When to Check Power Steering
Fluid
It is not necessary to regularly
check power steering fluid unless a
leak is suspected in the system,
or an unusual noise is heard. A fluid loss in this system could indicate a
problem. Have the system inspected
and repaired.
How to Check Power Steering
Fluid
Notice:
Extremely small amounts
of contamination can cause
steering system damage and
cause it to not work properly. Do
not allow contaminants to contact
the fluid side of the reservoir cap/
dipstick or to enter the reservoir.
To check the power steering fluid:
1. Turn the key off and let the engine compartment cool down.
2. Wipe the cap and the top of the reservoir clean.
3. Unscrew the cap and wipe the dipstick with a clean rag.
4. Replace the cap and completely tighten it.
5. Remove the cap again and look at the fluid level on the dipstick.
The fluid level should be between
the MIN (Minimum) and MAX
(Maximum) marks when the engine
is cold, and at the MAX mark when
the engine is hot. If the fluid is at the
MIN mark when the engine is cold
or hot, power steering fluid should
be added.
If the fluid is at or below the MIN
mark on the dipstick, add just
enough fluid to bring the level
between the MIN and MAX marks.

Black plate (23,1)Buick Regal Owner Manual - 2013 - crc - 11/5/12
Vehicle Care 10-23
What to Use
To determine what kind of fluid to
use, seeRecommended Fluids and
Lubricants on page 11‑12. Always
use the proper fluid.
Power Steering Fluid
(2.4L L4 Engine with or
without eAssist)
The vehicle has electric power
steering and does not use power
steering fluid.
Washer Fluid
What to Use
When windshield washer fluid is
needed, be sure to read the
manufacturer's instructions before
use. If operating the vehicle in an
area where the temperature may fall
below freezing, use a fluid that has
sufficient protection against
freezing.
Adding Washer Fluid
Open the cap with the washer
symbol on it. Add washer fluid until
the tank is full. See Engine
Compartment Overview on
page 10‑5 for reservoir location.
Notice
.When using concentrated
washer fluid, follow the
manufacturer instructions for
adding water.
.Do not mix water with
ready-to-use washer fluid.
Water can cause the solution
to freeze and damage the
washer fluid tank and other
parts of the washer system.
.Fill the washer fluid tank only
three-quarters full when it is
very cold. This allows for
fluid expansion if freezing
occurs, which could damage
the tank if it is
completely full.
.Do not use engine coolant
(antifreeze) in the windshield
washer. It can damage the
windshield washer system
and paint.
Brakes
This vehicle has disc brakes. Disc
brake pads have built-in wear
indicators that make a high-pitched
warning sound when the brake pads
are worn and new pads are needed.
The sound can come and go or be
heard all the time the vehicle is
moving, except when applying the
brake pedal firmly.

Black plate (24,1)Buick Regal Owner Manual - 2013 - crc - 11/5/12
10-24 Vehicle Care
{WARNING
The brake wear warning sound
means that soon the brakes will
not work well. That could lead to
a crash. When the brake wear
warning sound is heard, have the
vehicle serviced.
Notice: Continuing to drive with
worn-out brake pads could result
in costly brake repair.
Some driving conditions or climates
can cause a brake squeal when the
brakes are first applied or lightly
applied. This does not mean
something is wrong with the brakes.
Properly torqued wheel nuts are
necessary to help prevent brake
pulsation. When tires are rotated,
inspect brake pads for wear and
evenly tighten wheel nuts in the
proper sequence to torque
specifications in Capacities and
Specifications on page 12‑2. Brake linings should always be
replaced as complete axle sets.Brake Pedal Travel
See your dealer if the brake pedal
does not return to normal height,
or if there is a rapid increase in
pedal travel. This could be a sign
that brake service might be
required.
Brake Adjustment
Every time the brakes are applied,
with or without the vehicle moving,
the brakes adjust for wear.
Replacing Brake System Parts
The braking system on a vehicle is
complex. Its many parts have to be
of top quality and work well together
if the vehicle is to have really good
braking. The vehicle was designed
and tested with top-quality brake
parts. When parts of the braking
system are replaced, be sure to get
new, approved replacement parts.
If this is not done, the brakes might
not work properly. For example,installing disc brake pads that are
wrong for the vehicle, can change
the balance between the front and
rear brakes
—for the worse. The
braking performance expected can
change in many other ways if the
wrong replacement brake parts are
installed.
Brake Fluid
The brake/clutch master cylinder
reservoir is filled with DOT 3 brake
fluid as indicated on the reservoir
cap. See Engine Compartment
Overview on page 10‑5 for the
location of the reservoir.

Black plate (25,1)Buick Regal Owner Manual - 2013 - crc - 11/5/12
Vehicle Care 10-25
There are only two reasons why the
brake fluid level in the reservoir
might go down:
.The brake fluid level goes down
because of normal brake lining
wear. When new linings are
installed, the fluid level goes
back up.
.A fluid leak in the brake/clutch
hydraulic system can also cause
a low fluid level. Have the brake/
clutch hydraulic system fixed,
since a leak means that sooner
or later the brakes will not
work well.
Do not top off the brake/clutch fluid.
Adding fluid does not correct a leak.
If fluid is added when the linings are
worn, there will be too much fluid
when new brake linings are
installed. Add or remove fluid, as
necessary, only when work is done
on the brake/clutch hydraulic
system.
{WARNING
If too much brake fluid is added, it
can spill on the engine and burn,
if the engine is hot enough. You
or others could be burned, and
the vehicle could be damaged.
Add brake fluid only when work is
done on the brake/clutch
hydraulic system.
Checking Brake Fluid
The brake/clutch fluid can be
checked without taking off the cap
by looking at the brake/clutch fluid
reservoir.
The fluid level should be above
MIN. If it is not, have the brake/
clutch hydraulic system checked to
see if there is a leak.
After work is done on the brake/
clutch hydraulic system, make sure
the level is above MIN but not over
the MAX mark. When the brake/clutch fluid falls to a
low level, the brake warning light
comes on. See
Brake System
Warning Light on page 5‑18.
What to Add
Use only new DOT 3 brake fluid
from a sealed container. See
Recommended Fluids and
Lubricants on page 11‑12.
Always clean the brake/clutch fluid
reservoir cap and the area around
the cap before removing it. This
helps keep dirt from entering the
reservoir.
{WARNING
With the wrong kind of fluid in the
brake/clutch hydraulic system, the
brakes might not work well. This
could cause a crash. Always use
the proper brake/clutch fluid.

Black plate (26,1)Buick Regal Owner Manual - 2013 - crc - 11/5/12
10-26 Vehicle Care
Notice
.Using the wrong fluid can
badly damage brake/clutch
hydraulic system parts. For
example, just a few drops of
mineral-based oil, such as
engine oil, in the brake
hydraulic system can
damage brake hydraulic
system parts so badly that
they will have to be replaced.
Do not let someone put in
the wrong kind of fluid.
.If brake fluid is spilled on the
vehicle's painted surfaces,
the paint finish can be
damaged. Be careful not to
spill brake fluid on the
vehicle. If you do, wash it off
immediately.
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.eAssist vehicles 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. The
dealer has information on how to
recycle the high voltage battery.
There is also information available
at http://www.recyclemybattery.com.
The eAssist system high voltage
battery is cooled with air drawn from
the vehicle interior. The cold air
intake for the battery is behind the
rear seat, on the filler panel. Do not
cover the intake.
{WARNING
Battery posts, terminals, and
related accessories contain lead
and lead compounds, chemicals
known to the State of California to
cause cancer and reproductive
harm. Wash hands after handling.
Vehicle Storage
{WARNING
Batteries have acid that can burn
you and gas that can explode.
You can be badly hurt if you are
not careful. See
Jump Starting
(On-board with eAssist Only) on
page 10‑85 orJump Starting (with
or without eAssist) on page 10‑87
for tips on working around a
battery without getting hurt.

Black plate (27,1)Buick Regal Owner Manual - 2013 - crc - 11/5/12
Vehicle Care 10-27
Infrequent Usage: Remove the
12-volt battery black, negative (−)
cable from the battery to keep the
battery from running down.
Extended Storage: Remove the
12-volt battery black, negative (−)
cable from the battery or use a
battery trickle charger.
Remember to reconnect the battery
when ready to drive the vehicle.
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. Firmly apply both the parking
brake and the regular brake.
See Parking Brake on
page 9‑32.
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. Firmly apply the parking brake. See Parking Brake on
page 9‑32.
Be ready to apply the regular
brake immediately if the vehicle
begins to move.

Black plate (28,1)Buick Regal Owner Manual - 2013 - crc - 11/5/12
10-28 Vehicle Care
3. With the engine off, turn theignition on, but do not start the
engine. Without applying the
regular brake, try to move the
shift lever out of P (Park) with
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. See
Maintenance Schedule on
page 11‑3.
It is a good idea to clean the wiper
blade assembly on a regular basis.
When worn, or cleaning is
ineffective, replace the wiper blade.
For proper windshield wiper blade
length and type, see Maintenance
Replacement Parts on page 11‑14.

Black plate (35,1)Buick Regal Owner Manual - 2013 - crc - 11/5/12
Vehicle Care 10-35
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.
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, seeEngine
Compartment Fuse Block on
page 10‑35 andInstrument Panel
Fuse Block on page 10‑39.
Engine Compartment
Fuse Block
To remove the fuse block cover,
press the three retaining clips on the
cover and lift it straight up.
Notice: Spilling liquid on any
electrical component on the
vehicle may damage it. Always
keep the covers on any electrical
component.

Black plate (36,1)Buick Regal Owner Manual - 2013 - crc - 11/5/12
10-36 Vehicle Care
Engine Compartment Fuse Block
The vehicle may not be equipped
with all of the fuses, relays, and
features shown. Fuse
Number Usage
1 Transmission Control Module Fuse
Number Usage
2 Engine Control Module
3 SAI Solenoid (2.4L Engine RPO LEA)
4 Not Used Fuse
Number Usage
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
11 Oxygen Sensor
12 Starter
13 Fuel System Control Module
14 Trunk Release
15 MGU Coolant Pump (eAssist Only)

Black plate (38,1)Buick Regal Owner Manual - 2013 - crc - 11/5/12
10-38 Vehicle Care
Fuse
Number Usage
50 Left-Hand Low Beam, High Intensity
Discharge
Headlamp
51 Horn
52 Motor Indicator Lamp
53 Inside Rearview Mirror
54 Not Used
55 Power Windows/ Mirrors
56 Windshield Washer
57 Not Used
58 Not Used
59 Secondary Air Induction (eAssist
and 2.4L Engine
RPO LEA) Fuse
Number Usage
60 Heated Mirrors
61 Not Used
62 Canister Vent Solenoid
63 Not Used
64 Heater, Ventilation, and Air Conditioning
Pump (eAssist Only)
65 Not Used
66 SAI Check Valve (eAssist Only)
67 Fuel System Control Module
68 Not Used
69 Battery Sensor
70 Not Used
71 Not Used Relay
Number Usage
1 Air Conditioning Control
2 Starter
3 Cooling Fan
4 Front Wiper (Step 2)
5 Front Wiper (Step 1, Interval)
6 SAI Valve/Heater (eAssist and 2.4L
Engine RPO LEA),
Ventilation, and Air
Conditioning Pump
(eAssist Only)
7 Main Relay
8 Not Used
9 Cooling Fan
10 Cooling Fan