light BUICK REGAL 2013 Owners Manual

Black plate (40,1)Buick Regal Owner Manual - 2013 - crc - 11/5/12
9-40 Driving and Operating
Interactive Drive Control
System (GS Only)
The vehicle may have the
Interactive Drive Control System
(IDCS). IDCS adapts to the
preference of the driver within one
of three driving modes:
Standard:Default mode used for
normal and long–distance highway
driving. This setting provides a
smooth soft ride. Sport:
Use for normal city and
long-distance highway driving. This
setting provides precise,
comfortable handling. Press and
release the SPORT button and the
light on the button comes on. Press
the button again and the system
returns to the Standard mode.
GS: Use where personal
preference or road conditions
demand more control. This setting
provides responsive, controlled
steering and handling. Press and
release the GS button. The light on
the button comes on, and the
appropriate message displays on
the DIC. Press the button again.
The system returns to the Standard
mode and the appropriate message
displays on the DIC.
IDCS automatically comes on in the
Standard mode when the vehicle is
started. When the Sport and GS
modes are turned off, the system
returns to the Standard mode.
Standard Mode
.The shock absorbers allow a
normal ride.
.The powertrain reacts normally
to the accelerator pedal.
.Power steering assistance is
normal.
Sport Mode
.The shock absorbers stiffen to
provide better contact with the
road surface.
.The powertrain reacts normally
to the accelerator pedal.
.Power steering assistance is
normal.

Black plate (41,1)Buick Regal Owner Manual - 2013 - crc - 11/5/12
Driving and Operating 9-41
GS Mode
.Additional stiffness in the shock
absorbers for increased body
control.
.The powertrain reacts more
quickly to the accelerator pedal.
.Power steering assistance is
reduced.
There is no automatic Drive Mode
Control (DMC) in this vehicle.
Cruise Control
With cruise control, the vehicle can
maintain a speed of about 40 km/h
(25 mph) or more without keeping
your foot on the accelerator. Cruise
control does not work at speeds
below 40 km/h (25 mph).
On vehicles with the Traction
Control System (TCS) or StabiliTrak,
the system may begin to limit wheel
spin while you are using cruise
control. If this happens, the cruise
control will automatically disengage.
See Traction Control System (TCS)
on page 9‑35 orStabiliTrak
®System
on page 9‑36.
{WARNING
Cruise control can be dangerous
where you cannot drive safely at
a steady speed. So, do not use
the cruise control on winding
roads or in heavy traffic.
(Continued)
WARNING (Continued)
Cruise control can be dangerous
on slippery roads. On such roads,
fast changes in tire traction can
cause excessive wheel slip, and
you could lose control. Do not use
cruise control on slippery roads.
1(On/Off):Press to turn the
cruise control system on and off. An
indicator light will turn on or off in
the instrument cluster.

Black plate (42,1)Buick Regal Owner Manual - 2013 - crc - 11/5/12
9-42 Driving and Operating
*(Cancel):Press to disengage
cruise control without erasing the
set speed from memory.
RES/+ (Resume/Accelerate):
Move the thumbwheel up to make
the vehicle resume to a previously
set speed or to accelerate.
SET/− (Set/Coast): Move the
thumbwheel down to set the speed
and activate cruise control or make
the vehicle decelerate.
Setting Cruise Control
If the cruise button is on when not in
use, it could get bumped and go into
cruise when not desired. Keep the
cruise control switch off when cruise
is not being used.
1. Press
1to turn the cruise
control system on. The indicator
light in the instrument cluster
comes on.
2. Get to the speed desired. 3. Move the thumbwheel down
toward SET/− and release it.
The desired set speed briefly
appears in the instrument
cluster.
4. Take your foot off the accelerator pedal.
Resuming a Set Speed
If the cruise control is set at a
desired speed and then the brakes
are applied or the
*button is
pressed, the cruise control is
disengaged without erasing the set
speed from memory.
Once the vehicle reaches about
40 km/h (25 mph) or more, move the
thumbwheel up toward RES/+
briefly. The vehicle returns to the
previous set speed and stays there. Increasing Speed While Using
Cruise Control
If the cruise control system is
already activated:
.Move the thumbwheel up toward
RES/+ and hold it until the
vehicle accelerates to the
desired speed, then release it.
.To increase the speed in small
amounts, move the thumbwheel
up toward RES/+ briefly and
then release it. Each time this is
done, the vehicle goes about
1.6 km/h (1 mph) faster.
Reducing Speed While Using
Cruise Control
If the cruise control system is
already activated:
.Move the thumbwheel toward
SET/− and hold until the desired
lower speed is reached, then
release it.
.To slow down in small amounts,
move the thumbwheel toward
SET/− briefly and then release it.

Black plate (43,1)Buick Regal Owner Manual - 2013 - crc - 11/5/12
Driving and Operating 9-43
Each time this is done, the
vehicle goes about 1.6 km/h
(1 mph) slower.
Passing Another Vehicle While
Using Cruise Control
Use the accelerator pedal to
increase the vehicle's speed. When
you take your foot off the pedal, the
vehicle will slow down to the
previous set cruise control speed.
Using Cruise Control on Hills
How well the cruise control works
on hills depends upon the vehicle's
speed, load, and the steepness of
the hills. When going up steep hills,
you might have to step on the
accelerator pedal to maintain the
vehicle's speed. When going
downhill, you might have to brake or
shift to a lower gear to maintain the
vehicle's speed. When the brakes
are applied, the cruise control
shuts off. Ending Cruise Control
There are three ways to end cruise
control:
.To disengage cruise control,
step lightly on the brake pedal or
clutch; when cruise control
disengages, the indicator light
will not be lit.
.Press*on the steering wheel.
.To turn off the cruise control,
press
1on the steering wheel.
Erasing Speed Memory
The cruise control set speed is
erased from memory by pressing
1
or if the ignition is turned off.
Object Detection
Systems
Ultrasonic Parking Assist
If available, the Ultrasonic Front and
Rear Parking Assist (UFRPA) or
Ultrasonic Rear Parking Assist
(URPA) system assists the driver
with parking and avoiding objects.
At speeds less than 8 km/h (5 mph),
the system detects objects up to
1.5 m (5 ft) behind the vehicle, and
at least 25 cm (10 in) off the ground.
If the vehicle has the UFRPA
system, it also detects objects 1.2 m
(4 ft) in front of the vehicle.
{WARNING
The parking assist system does
not detect children, pedestrians,
bicyclists, animals, or objects
located below the bumper or that
are too close or too far from the
vehicle. It is not available at (Continued)

Black plate (44,1)Buick Regal Owner Manual - 2013 - crc - 11/5/12
9-44 Driving and Operating
WARNING (Continued)
speeds greater than 8 km/h
(5 mph). To prevent injury, death,
or vehicle damage, even with
parking assist, always check the
area around the vehicle and
check all mirrors before moving
forward or backing.
How the System Works
When the shift lever is moved into
R (Reverse), the sensors are
automatically turned on. A single
tone sounds to indicate the system
is working. After the vehicle is
shifted out of R (Reverse), the rear
sensors are turned off and the front
sensors (if equipped) stay on until
the vehicle is above a speed of 8
km/h (5 mph). For the front park
assist system to be active again
without shifting into R (Reverse), the
park assist button next to the radio
must be pressed. See“Turning the
System On and Off ”later in this
section. An obstacle is indicated by audible
beeps. The interval between the
beeps becomes shorter as the
vehicle gets closer to the obstacle.
When the distance is less than
30 cm (12 in) the beeping is a
continuous tone for five seconds.
Objects Detected by Both the
Front and Rear Sensors (If
Equipped)
In general, if objects are detected at
the same time near both the front
and rear bumpers while backing up,
the beeps only sound to indicate
that objects are close to the rear
bumper.
However, if an object is very close
to the front bumper while the vehicle
is backing up and at the same time
there is another object further not as
close to the rear bumper, then the
beeps only sound to indicate the
object that is closer to the front
bumper.
Turning the System On and Off
The URPA/UFRPA system can be
turned on and off using the park
assist button located next to the
radio.
The indicator light next to the park
assist button lights up when the
system is on and turns off when it
has been disabled.
When the system is off, a message
displays on the Driver Information
Center (DIC). The message
disappears after a short period
of time.
The system defaults to the on
setting each time the vehicle is
started.

Black plate (46,1)Buick Regal Owner Manual - 2013 - crc - 11/5/12
9-46 Driving and Operating
The eighth digit of the Vehicle
Identification Number (VIN) shows
the code letter or number that
identifies the vehicle's engine. The
VIN is at the top left of the
instrument panel. SeeVehicle
Identification Number (VIN) on
page 12‑1.
Vehicles that have a yellow fuel cap
can use either unleaded gasoline or
ethanol fuel containing up to 85%
ethanol (E85). See Fuel E85 (85%
Ethanol) on page 9‑48. For all other
vehicles, use only the unleaded
gasoline described under
Recommended Fuel on page 9‑46.
Recommended Fuel
If the vehicle has a 2.4L L4 engine,
use regular unleaded gasoline with
a posted octane rating of 87 or
higher. If the octane rating is less
than 87, an audible knocking noise,
commonly referred to as spark
knock, might be heard when driving.
If this occurs, use a gasoline rated
at 87 octane or higher as soon as
possible. If heavy knocking is heard
when using gasoline rated at
87 octane or higher, the engine
needs service.
If the vehicle has the 2.0L L4
engine, use premium unleaded
gasoline with a posted octane rating
of 91 or higher. You can also use
regular unleaded gasoline rated at
87 octane or higher, but the
vehicle's acceleration could be
slightly reduced, and a slight audible
knocking noise, commonly referred
to as spark knock, might be heard.
If the octane is less than 87, a
heavy knocking noise might be
heard when driving. If this occurs, use a gasoline rated at 87 octane or
higher as soon as possible.
Otherwise, you could damage the
engine. If heavy knocking is heard
when using gasoline rated at
87 octane or higher, the engine
needs service.
Gasoline Specifications
At a minimum, gasoline should meet
ASTM specification D 4814. Some
gasolines contain an
octane-enhancing additive called
methylcyclopentadienyl manganese
tricarbonyl (MMT). We recommend
against the use of gasolines
containing MMT. See
Fuel Additives
on page 9‑47.
California Fuel
Requirements
If the vehicle is certified to meet
California Emissions Standards, it is
designed to operate on fuels that
meet California specifications. See
the underhood emission control
label. If this fuel is not available in

Black plate (50,1)Buick Regal Owner Manual - 2013 - crc - 11/5/12
9-50 Driving and Operating
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 10‑92.
{WARNING
If a fire starts while you are
refueling, do not remove the
nozzle. Shut off the flow of fuel by
shutting off the pump or by
notifying the station attendant.
Leave the area immediately.
Notice: If a new fuel cap is
needed, be sure to get the right
type of cap from your dealer. The
wrong type of fuel cap might not
fit properly, might cause the
malfunction indicator lamp to
light, and could damage the fuel
tank and emissions system. See
Malfunction Indicator Lamp on
page 5‑15.
Filling a Portable Fuel
Container
{WARNING
Filling a portable fuel container
while it is in the vehicle can cause
fuel vapors that can ignite either
by static electricity or other
means. You or others could be
badly burned and the vehicle
could be damaged. Always:
.Use approved fuel
containers.
.Remove the container from
the vehicle, trunk, or pickup
bed before filling.
.Place the container on the
ground.
(Continued)
WARNING (Continued)
.Place the nozzle inside the fill
opening of the container
before dispensing fuel, and
keep it in contact with the fill
opening until filling is
complete.
.Fill the container no more
than 95% full to allow for
expansion.
.Do not smoke, light matches,
or use lighters while
pumping fuel.
.Avoid using cell phones or
other electronic devices.

Black plate (1,1)Buick Regal Owner Manual - 2013 - crc - 11/5/12
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 . . . . . . . . . . . . . . . . . . . 10-5
Engine Oil . . . . . . . . . . . . . . . . . . 10-10
Engine Oil Life System . . . . . 10-12
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . 10-13
Manual Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . 10-14
Hydraulic Clutch . . . . . . . . . . . . 10-14
Engine Air Cleaner/Filter . . . . 10-14
Cooling System . . . . . . . . . . . . 10-16
Engine Coolant . . . . . . . . . . . . . 10-17
Engine Overheating . . . . . . . . 10-20 Power Steering Fluid (2.0L
L4 Engine) . . . . . . . . . . . . . . . . 10-22
Power Steering Fluid (2.4L L4 Engine with or without
eAssist) . . . . . . . . . . . . . . . . . . . 10-23
Washer Fluid . . . . . . . . . . . . . . . 10-23
Brakes . . . . . . . . . . . . . . . . . . . . . 10-23
Brake Fluid . . . . . . . . . . . . . . . . . 10-24
Battery . . . . . . . . . . . . . . . . . . . . . 10-26
Starter Switch Check . . . . . . . 10-27
Automatic Transmission Shift Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . 10-27
Ignition Transmission Lock Check . . . . . . . . . . . . . . . . . . . . . 10-28
Park Brake and P (Park) Mechanism Check . . . . . . . . 10-28
Wiper Blade Replacement . . . . . . . . . . . . . . 10-28
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . 10-29
Bulb Replacement
Bulb Replacement . . . . . . . . . . 10-30
Halogen Bulbs . . . . . . . . . . . . . . 10-30
High Intensity Discharge(HID) Lighting . . . . . . . . . . . . . 10-30 Headlamps, Front Turn
Signal and Parking
Lamps . . . . . . . . . . . . . . . . . . . . 10-30
Fog Lamps . . . . . . . . . . . . . . . . . 10-32
Taillamps, Turn Signal, Stoplamps, and Back-Up
Lamps . . . . . . . . . . . . . . . . . . . . 10-32
License Plate Lamp . . . . . . . . 10-33
Replacement Bulbs . . . . . . . . . 10-33
Electrical System
High Voltage Devices and Wiring . . . . . . . . . . . . . . . . . . . . . 10-34
Electrical System Overload . . . . . . . . . . . . . . . . . . 10-34
Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . 10-35
Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . 10-35
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . 10-39
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . 10-41
All-Season Tires . . . . . . . . . . . . 10-42
Winter Tires . . . . . . . . . . . . . . . . 10-42
Summer Tires . . . . . . . . . . . . . . 10-42
Tire Sidewall Labeling . . . . . . 10-43
Tire Designations . . . . . . . . . . . 10-45

Black plate (15,1)Buick Regal Owner Manual - 2013 - crc - 11/5/12
Vehicle Care 10-15
How to Inspect the Engine Air
Cleaner/Filter
To inspect the air cleaner/filter,
remove the filter from the vehicle
and lightly shake the filter to release
loose dust and dirt. If the filter
remains covered with dirt, a new
filter is required.
2.0L L4 Engine
1. Electrical Connector
2. Air Duct Clamp
3. Screws To inspect or replace the engine air
cleaner/filter:
1. Open the hood. See
Hood on
page 10‑4.
2. Disconnect the outlet duct by loosening the air duct clamp (2).
3. Disconnect the electrical connector (1).
4. Remove the screws (3) on top of the engine air cleaner/filter
housing.
5. Lift the filter cover housing away from the air cleaner/filter
housing.
6. Pull out the filter.
7. Inspect or replace the engine air cleaner/filter.
8. Reverse Steps 2–4 to reinstall the filter cover housing.
2.4L L4 Engine without eAssist
Shown, 2.4L L4 Engine with eAssist Similar
1. Screws
2. Air Duct Clamp
3. Electrical Connector
To inspect or replace the engine air
cleaner/filter:
1. Open the hood. See Hood on
page 10‑4.
2. Disconnect the outlet duct by loosening the air duct clamp (2).

Black plate (20,1)Buick Regal Owner Manual - 2013 - crc - 11/5/12
10-20 Vehicle Care
3. Fill the coolant surge tank withthe proper DEX-COOL coolant
mixture to the indicated
level mark.
4. With the coolant surge tank pressure cap off, start the
engine and let it run until you
can feel the upper radiator hose
getting hot. Watch out for the
engine cooling fans.
By this time, the coolant level
inside the coolant surge tank
may be lower. If the level is
lower, add more of the proper
DEX-COOL coolant mixture to the coolant surge tank until the
level reaches the indicated
level mark.
5. Replace the pressure cap tightly.
Check the level in the coolant surge
tank when the cooling system has
cooled down. If the coolant is not at
the proper level, repeat Steps 1–
3 and reinstall the pressure cap.
If the coolant still is not at the proper
level when the system cools down
again, see your dealer.
Engine Overheating
2.0L L4 Engine
The vehicle has an engine coolant
temperature warning light and an
engine coolant temperature gauge
on the instrument panel to warn of
engine overheating. See Engine
Coolant Temperature Warning Light
on page 5‑21 andEngine Coolant
Temperature Gauge on page 5‑12. 2.4L L4 Engine with or without
eAssist
The vehicle has an engine coolant
temperature warning light on the
instrument panel to warn of engine
overheating. See
Engine Coolant
Temperature Warning Light on
page 5‑21.
If it is decided not to lift the hood
when this warning appears, but
instead get service help right away,
see Roadside Assistance Program
(Mexico) on page 13‑7 orRoadside
Assistance Program (U.S. and
Canada) on page 13‑11.
If it is decided to lift the hood, make
sure the vehicle is parked on a level
surface.
Then check to see if the engine
cooling fans are running. If the
engine is overheating, both fans
should be running. If they are not,
do not continue to run the engine
and have the vehicle serviced.