Page 275 of 412

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.
Page 276 of 412

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.
Page 279 of 412

Black plate (31,1)Buick Regal Owner Manual - 2013 - crc - 11/5/12
Vehicle Care 10-31
Uplevel Headlamp Assembly
(Passenger Side Shown, Driver
Side Similar)
1. High/Low-Beam Headlamp - Tobe replaced at the dealer only
2. Turn Signal Lamp
Low-Beam Headlamps/Daytime
Running Lamps (DRL),
High-Beam Headlamps (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 outside cap for the
low-beam headlamp/DRL bulb
replacement from the back of the
headlamp assembly.
3. Remove the inside cap for the high-beam headlamp bulb
replacement from the back of the
headlamp assembly.
4. Disconnect the electrical connector.
5. Remove the bulb socket from the headlamp assembly.
6. Replace the bulb in the bulb socket.
7. Install the bulb socket in the headlamp assembly.
8. Reverse Steps 1–4 to reinstall the outside or inside cap on the
headlamp assembly.
High/Low-Beam Headlamps
(Uplevel)
The high/low-beam headlamps on
the uplevel headlamp system are
High Intensity Discharge (HID) and
should be replaced at the dealer.
Front Turn Signal/Parking/
Sidemarker Lamps (Base and
Uplevel)
To replace the front turn signal,
parking lamp, or sidemarker lamp:
1. For the driver side bulb, removethe windshield washer bottle
filler neck by firmly pulling it
straight up and out of the bottle.
2. Remove the bulb socket from the headlamp assembly by
turning it counterclockwise.
3. Remove the bulb from the socket.
4. Replace the bulb in the bulb socket.
5. Install the bulb socket in the headlamp assembly by turning it
clockwise.
Page 280 of 412

Black plate (32,1)Buick Regal Owner Manual - 2013 - crc - 11/5/12
10-32 Vehicle Care
6. For the driver side, reinstall thewindshield washer bottle filler
neck by firmly pushing it straight
into the bottle. Ensure that the
filler neck clip engages into the
underhood electrical center
retainer.
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.
Taillamps, Turn Signal,
Stoplamps, and Back-Up
Lamps
1. Taillamp
2. Taillamp/Sidemarker Lamp
3. Stop/Turn Signal Lamp
4. Back-up Lamp To replace any one of these bulbs:
1. Open the trunk. See
Trunk
Release on page 1‑5.
2. Remove the trunk trim panel push pin.
3. Pull the trunk trim panel back to gain access to the taillamp
assembly.
4. Remove the two nuts that secure 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.
Page 281 of 412

Black plate (33,1)Buick Regal Owner Manual - 2013 - crc - 11/5/12
Vehicle Care 10-33
License Plate Lamp
Lamp Assembly
Bulb Assembly1. Bulb Socket
2. Bulb
3. Lamp Assembly
To replace one of these bulbs:
1. Push the release tab toward the
lamp assembly.
2. Pull the lamp assembly down to remove.
3. Turn the bulb socket (1) counterclockwise to remove it
from the lamp assembly (3).
4. Pull the bulb (2) straight out of the bulb socket (1).
5. Push the replacement bulb straight into the bulb socket and
turn the bulb socket clockwise to
install it into the lamp assembly.
6. Push the lamp assembly back into position until the release tab
locks into place.
Replacement Bulbs
Exterior Lamp Bulb
Number
Back-up Lamp 3157 K
Fog Lamp H10
Front Turn
Signal Lamp 3457 NAK
Front Sidemarker
Lamp (Base) 194NA
High‐Beam
Headlamp (Base) H7
License Plate Lamp 194
Low‐Beam
Headlamp/Daytime
Running
Lamp (DRL) H11
Stoplamp/Turn
Signal Lamp 3157 K
Taillamp/
Sidemarker Lamp 3157 K
For replacement bulbs not listed
here, contact your dealer.
Page 283 of 412

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.
Page 284 of 412
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)
Page 285 of 412
Black plate (37,1)Buick Regal Owner Manual - 2013 - crc - 11/5/12
Vehicle Care 10-37
Fuse
Number Usage
16 Heated Steering Wheel
17 Airbag
18 BPIM (eAssist Only)
19 Not Used
20 Not Used
21 Rear Power Windows
22 Antilock Brake System Valve
23 Variable Effort Steering
24 Front Power Windows
25 Power Outlets
26 Antilock Brake System Pump
27 Electric Parking Brake Fuse
Number Usage
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 Not Used
37 Right-Hand High-Beam
Headlamp
38 Left-Hand High-Beam
Headlamp Fuse
Number Usage
39 Not Used
40 Not Used
41 Vacuum Pump
42 Radiator Fan
43 Passive Entry/ Passive Start
44 Transmission Auxiliary Pump
(eAssist Only)
45 Radiator Fan
46 Terminal 87, Main Relay
47 Oxygen Sensor
48 Fog Lamps
49 Right-Hand Low Beam, High Intensity
Discharge
Headlamp