
Black plate (1,1)Buick Regal Owner Manual - 2012
Climate Controls 8-1
Climate Controls
Climate Control Systems
Climate Control Systems . . . . . . 8-1
Dual Automatic Climate ControlSystem . . . . . . . . . . . . . . . . . . . . . . 8-3
Air Vents
Air Vents . . . . . . . . . . . . . . . . . . . . . . 8-7
Maintenance
Air Intake . . . . . . . . . . . . . . . . . . . . . 8-8
Passenger Compartment AirFilter . . . . . . . . . . . . . . . . . . . . . . . . . 8-8
Climate Control Systems
The heating, cooling, and ventilation for the vehicle can be controlled with
this system.
A. Air Conditioning
B. Temperature Control
C. Air Delivery Modes
D. Fan Control
E. Defrost
F. Recirculation
G. Rear Defogger Temperature Control:
Turn the
knob clockwise or counterclockwise
to increase or decrease the
temperature setting.
Fan Control: Turn the knob
clockwise or counterclockwise to
increase or decrease the fan speed.

Black plate (5,1)Buick Regal Owner Manual - 2012
Climate Controls 8-5
Automatic Operation
The system automatically controls
the fan speed, air delivery, air
conditioning, and recirculation in
order to heat or cool the vehicle to
the desired temperature.
When the indicator light is on, the
system is in full automatic operation.
If the air delivery mode or fan
setting is manually adjusted, the
auto indicator turns off and displays
will show the selected settings.
To place the system in
automatic mode:
1. Press AUTO.
2. Set the temperature. Allow thesystem time to stabilize. Then
adjust the temperature as
needed for best comfort.
To improve fuel efficiency and to
cool the vehicle faster, recirculation
may be automatically selected in
warm weather. The recirculation
light will not come on. Press
hto
select recirculation; press it again to
select outside air. English units can be changed to
metric units through the Driver
Information Center (DIC). See
Driver Information Center (DIC) on
page 5‑25.
Manual Operation
Driver and Passenger
Temperature Control:
The
temperature can be adjusted
separately for the driver and
passenger.
Turn the knob clockwise or
counterclockwise to increase or
decrease the driver or passenger
temperature setting.
Fan Control: Press the left fan
button to decrease the fan speed.
Press the right fan button to
increase the fan speed. The
selected fan speed is indicated by
the number of segments shown in
the display.
Pressing the left fan button longer
turns the fan off.
Press AUTO to return to automatic
operation. Air Delivery Modes:
Press
[,Y,
or
8to change the direction of the
airflow. An indicator light comes on
in the selected mode button.
Changing the mode cancels the
automatic operation and the system
goes into manual mode. Press
AUTO to return to automatic
operation.
[(Floor): Air is directed to the
floor outlets.
Y(Vent): Air is directed to the
instrument panel outlets.
8(Upper): Air is directed to the
windshield outlets.
0(Defrost): Press to clear the
windshield of fog or frost more
quickly. Air is directed to the
windshield.
For best results, clear all snow and
ice from the windshield before
defrosting.

Black plate (50,1)Buick Regal Owner Manual - 2012
9-50 Driving and Operating
Filling the Tank
{WARNING
Fuel vapor burns violently and a
fuel fire can cause bad injuries.
To help avoid injuries to you and
others, read and follow all the
instructions on the fuel pump
island. Turn off the engine when
refueling. Do not smoke near fuel
or when refueling the vehicle. Do
not use cellular phones. Keep
sparks, flames, and smoking
materials away from fuel. Do not
leave the fuel pump unattended
when refueling the vehicle. This is
against the law in some places.
Do not re-enter the vehicle while
pumping fuel. Keep children away
from the fuel pump; never let
children pump fuel.
The tethered fuel cap is behind the
fuel door on the vehicle's passenger
side. Turn the fuel cap
counterclockwise to remove.
Reinstall the cap by turning it
clockwise until it clicks.
{WARNING
Fuel can spray out on you if you
open the fuel cap too quickly.
If you spill fuel and then
something ignites it, you could be
badly burned. This spray can
happen if the tank is nearly full,
and is more likely in hot weather.
Open the fuel cap slowly and wait
for any hiss noise to stop. Then
unscrew the cap all the way.
Do not top off or overfill the tank.
Wait a few seconds before removing
the nozzle. Clean fuel from painted
surfaces as soon as possible. See
Exterior Care on page 10‑98.

Black plate (21,1)Buick Regal Owner Manual - 2012
Vehicle Care 10-21
{WARNING
Steam and scalding liquids from a
hot cooling system can blow out
and burn you badly. They are
under pressure, and if you turn
the coolant surge tank pressure
cap—even a little —they can
come out at high speed. Never
turn the cap when the cooling
system, including the coolant
surge tank pressure cap, is hot.
Wait for the cooling system and
coolant surge tank pressure cap
to cool if you ever have to turn
the pressure cap.
{WARNING
Adding only plain water or some
other liquid to the cooling system
can be dangerous. Plain water
and other liquids can boil before
the proper coolant mixture will.
(Continued)
WARNING (Continued)
The coolant warning system is set
for the proper coolant mixture.
With plain water or the wrong
mixture, the engine could get too
hot but you would not get the
overheat warning. The engine
could catch fire and you or
others could be burned. Use a
50/50 mixture of clean, drinkable
water and DEX-COOL coolant for
non-eAssist engine(s). Use a
50/50 mixture of deionized water
and DEX-COOL coolant for
eAssist engine(s).
Notice: In cold weather, water
can freeze and crack the engine,
radiator, heater core and other
parts. Use the recommended
coolant and the proper coolant
mixture.
{WARNING
You can be burned if you spill
coolant on hot engine parts.
Coolant contains ethylene glycol
and it will burn if the engine parts
are hot enough. Do not spill
coolant on a hot engine.
2.0L Engine Shown, 2.4L Engines
(with or without eAssist) Similar
1. Remove the coolant surge tank pressure cap when the cooling
system, including the coolant
surge tank pressure cap and
upper radiator hose, is no
longer hot.
Turn the pressure cap slowly
counterclockwise about
one-quarter of a turn. If you hear

Black plate (35,1)Buick Regal Owner Manual - 2012
Vehicle Care 10-35
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. 6. For the driver side, reinstall the
windshield 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
A. Taillamp/Sidemarker Lamp
B. Taillamp
C. Stop/Turn Signal Lamp
D. Back-up Lamp
To replace any one of these bulbs:
1. Open the trunk. See Trunk
Release on page 1‑6.
2. Remove the taillamp assembly access panel.

Black plate (36,1)Buick Regal Owner Manual - 2012
10-36 Vehicle Care
3. Remove the two nuts thatsecure the taillamp assembly.
4. Remove the taillamp assembly and detach the wiring harness
connector.
A. Back-up Lamp
B. Taillamp
C. Stop/Turn Signal Lamp
D. Taillamp/Sidemarker Lamp
5. Turn the bulb socket counterclockwise to remove it.
6. Pull the bulb from the socket. 7. Install a new bulb.
8. Turn the bulb socket clockwise
to install it.
9. Reverse Steps 2 through 4 to reinstall the taillamp assembly.
License Plate Lamp
To replace one of these bulbs:
Passenger Side Shown, Driver
Side Similar
1. Push the release tab (A) toward the lamp assembly. 2. Pull the lamp assembly down to
remove.
A. Bulb Socket
B. Bulb
C. Lamp Assembly
3. Turn the bulb socket (A) counterclockwise to remove it
from the lamp assembly (C).
4. Pull the bulb (B) straight out of the bulb socket.
5. Push the replacement bulb straight into the bulb socket and
turn the bulb socket clockwise to
install it into the lamp assembly.

Black plate (70,1)Buick Regal Owner Manual - 2012
10-70 Vehicle Care
heated environment for five minutes.
This will help to inflate the tire
faster.
If a tire goes flat, avoid further tire
and wheel damage by driving slowly
to a level place. Turn on the hazard
warning flashers. SeeHazard
Warning Flashers on page 6‑3.
See If a Tire Goes Flat on
page 10‑65 for other important
safety warnings.
Do not remove any objects that
have penetrated the tire.
1. Remove the tire sealant and compressor kit from its storage
location. See Storing the Tire
Sealant and Compressor Kit on
page 10‑82.
2. Unwrap the sealant/air hose (F) and the power plug (G).
3. Place the kit on the ground. Make sure the tire valve stem is
positioned close to the ground
so the hose will reach it. 4. Remove the valve stem cap from
the flat tire by turning it
counterclockwise.
5. Attach the sealant/air hose (F) onto the tire valve stem. Turn it
clockwise until it is tight.
6. Plug the power plug (G) into the accessory power outlet in the
vehicle. Unplug all items from
other accessory power outlets.
See Power Outlets on page 5‑6.
If the vehicle has an accessory
power outlet, do not use the
cigarette lighter.
If the vehicle only has a cigarette
lighter, use the cigarette lighter.
Do not pinch the power plug
cord in the door or window.
7. Start the vehicle. The vehicle must be running while using the
air compressor.
8. Turn the selector switch (B) clockwise to the Sealant + Air
position. 9. Press the on/off button (A) to
turn the tire sealant and
compressor kit on.
The compressor will inject
sealant and air into the tire.
The pressure gauge (D) will
initially show a high pressure
while the compressor pushes the
sealant into the tire. Once the
sealant is completely dispersed
into the tire, the pressure will
quickly drop and start to rise
again as the tire inflates with
air only.
10. Inflate the tire to the recommended inflation
pressure using the pressure
gauge (D). The recommended
inflation pressure can be found
on the Tire and Loading
Information label. See Tire
Pressure on page 10‑52.
The pressure gauge (D) may
read higher than the actual tire
pressure while the compressor
is on. Turn the compressor off
to get an accurate pressure

Black plate (71,1)Buick Regal Owner Manual - 2012
Vehicle Care 10-71
reading. The compressor may
be turned on/off until the
correct pressure is reached.
Notice: If the recommended
pressure cannot be reached after
approximately 25 minutes, the
vehicle should not be driven
farther. The tire is too severely
damaged and the tire sealant and
compressor kit cannot inflate the
tire. Remove the power plug from
the accessory power outlet and
unscrew the inflating hose from
the tire valve. See Roadside
Assistance Program (U.S. and
Canada) on page 13‑7 or
Roadside Assistance Program
(Mexico) on page 13‑9.
11. Press the on/off button (A) to turn the tire sealant and
compressor kit off.
The tire is not sealed and will
continue to leak air until the
vehicle is driven and the
sealant is distributed in the tire; therefore, Steps 12–18 must be
done immediately after
Step 11.
Be careful while handling the
tire sealant and compressor kit
as it could be warm after
usage.
12. Unplug the power plug (G) from the accessory power outlet in
the vehicle.
13. Turn the sealant/air hose (F) counterclockwise to remove it
from the tire valve stem.
14. Replace the tire valve stem cap.
15. Return the sealant/air hose (F) and the power plug (G) back in
their original locations.
16. If the flat tire was able to inflate
to the recommended inflation
pressure, remove the
maximum speed label from the
sealant canister and place it in
a highly visible location. Do not
exceed the speed on this label
until the damaged tire is
repaired or replaced.
17. Return the equipment to its original storage location in the
vehicle.
18. Immediately drive the vehicle 8 km (5 mi) to distribute the
sealant in the tire.
19. Stop at a safe location and check the tire pressure. Refer
to Steps 1–11 under “Using the
Tire Sealant and Compressor
Kit without Sealant to Inflate a
Tire (Not Punctured).”