2011 BUICK REGAL check engine

Black plate (71,1)Buick Regal Owner Manual - 2011
Vehicle Care 10-71
2.0L Engine Shown, 2.4L Similar
The jump start positive (B) is
located under a trim cover in the
engine compartment on the driver
side of the vehicle.2.0L Engine Shown, 2.4L Similar
These locations are used instead of
a direct connection to the battery.
1. Check the other vehicle. It must have a 12-volt battery with a
negative ground system.
Notice: Only use a vehicle that
has a 12-volt system with a
negative ground for jump
starting. If the other vehicle does
not have a 12-volt system with a
negative ground, both vehicles
can be damaged. 2. Position the two vehicles so that
they are not touching.
3. To avoid the possibility of the vehicles rolling, set the parking
brake firmly on both vehicles
involved in the jump start
procedure. Put an automatic
transmission in P (Park) or a
manual transmission in Neutral
before setting the parking brake.
Notice: If the radio or other
accessories are left on during the
jump starting procedure, they
could be damaged. The repairs
would not be covered by the
warranty. Always turn off the
radio and other accessories when
jump starting the vehicle.
4. Turn the ignition to LOCK/OFF and switch off all lights and
accessories in both vehicles,
except the hazard warning
flashers if needed.

Black plate (3,1)Buick Regal Owner Manual - 2011
Service and Maintenance 11-3
system whenever the oil is changed.
SeeEngine Oil Life System on
page 10‑13.
Every Engine Oil Change
.Change engine oil and filter.
Reset oil life system. See
Engine Oil on page 10‑9 and
Engine Oil Life System on
page 10‑13. An Emission
Control Service.
.Engine coolant level check. See
Engine Coolant on page 10‑18.
.Engine cooling system
inspection. Visual inspection of
hoses, pipes, fittings, and
clamps and replacement,
if needed.
.Windshield washer fluid level
check. See Washer Fluid on
page 10‑24.
.Windshield wiper blade
inspection for wear, cracking,
or contamination and windshield
and wiper blade cleaning,
if contaminated. See Exterior
Care on page 10‑77. Worn or damaged wiper blade
replacement. See
Wiper Blade
Replacement on page 10‑30.
.Tire inflation pressures check.
See Tire Pressure on
page 10‑49.
.Tire wear inspection. See Tire
Inspection on page 10‑55.
.Rotate tires if necessary. See
Tire Rotation on page 10‑55.
.Fluids visual leak check (or
every 12 months, whichever
occurs first). A leak in any
system must be repaired and the
fluid level checked.
.Engine air cleaner filter
inspection. See Engine Air
Cleaner/Filter on page 10‑15.
.Brake system inspection (or
every 12 months, whichever
occurs first).
.Steering and suspension
inspection. Visual inspection for
damaged, loose, or missing
parts or signs of wear.
.Body hinges and latches, key
lock cylinders, folding seat
hardware, and sunroof (if
equipped) lubrication. See
Recommended Fluids and
Lubricants on page 11‑6. More
frequent lubrication may be
required when the vehicle is
exposed to a corrosive
environment. Applying silicone
grease on weatherstrips with a
clean cloth makes them last
longer, seal better, and not stick
or squeak.
.Restraint system component
check. See Safety System
Check on page 3‑26.
.Fuel system inspection for
damage or leaks.
.Exhaust system and nearby heat
shields inspection for loose or
damaged components.

Black plate (4,1)Buick Regal Owner Manual - 2011
11-4 Service and Maintenance
Additional Required Services
Every 12 000 km/7,500 Miles
.Rotate tires. Tires should be
rotated every 12 000 km/
7,500 miles. SeeTire Rotation
on page 10‑55.
At Each Fuel Stop
.Engine oil level check. See
Engine Oil on page 10‑9.
.Engine coolant level check. See
Engine Coolant on page 10‑18.
.Windshield washer fluid level
check. See Washer Fluid on
page 10‑24.
Once a Month
.Tire inflation check. See Tire
Pressure on page 10‑49.
.Tire wear inspection. See Tire
Inspection on page 10‑55.
.Sunroof track and seal
inspection, if equipped. See
Sunroof on page 2‑15. Once a Year
.See
Starter Switch Check on
page 10‑28.
.See Automatic Transmission
Shift Lock Control Function
Check on page 10‑28.
.See Ignition Transmission Lock
Check on page 10‑29.
.See Park Brake and P (Park)
Mechanism Check on
page 10‑29.
.Accelerator pedal check for
damage, high effort, or binding.
Replace if needed.
.Underbody flushing service.
.Hood/Decklid/Liftgate/Liftglass
Support Gas Strut Service:
Visually inspect gas strut,
if equipped, for signs of wear,
cracks, or other damage. Check
the hold open ability of the gas
strut. Contact your dealer if
service is required. Once Every Two Years
.Vehicles using DOT 4 brake fluid
only: Change brake/clutch
hydraulic fluid at a regular
maintenance service every
two years.
First Engine Oil Change After
Every 40 000 km/25,000 Miles
.Passenger compartment air
filter replacement (or every
24 months, whichever occurs
first). More frequent replacement
may be needed if you drive in
areas with heavy traffic, areas
with poor air quality, or areas
with high dust levels.
Replacement may also be
needed if you notice reduced air
flow, windows fogging up,
or odors. Your dealer can help
you determine when it is the
right time to replace the filter.

Black plate (5,1)Buick Regal Owner Manual - 2011
Service and Maintenance 11-5
First Engine Oil Change After
Every 80 000 km/50,000 Miles
.Engine air cleaner filter
replacement. SeeEngine Air
Cleaner/Filter on page 10‑15.
.Automatic transmission fluid
change (severe service) for
vehicles mainly driven in heavy
city traffic in hot weather, in hilly
or mountainous terrain, or used
for taxi, police, or delivery
service. See Automatic
Transmission Fluid on
page 10‑14.
.Evaporative control system
inspection. Check all fuel and
vapor lines and hoses for proper
hook‐up, routing, and condition.
Check that the purge valve,
if the vehicle has one, works
properly. Replace as needed. An
Emission Control Service. The
U.S. Environmental Protection Agency or the California Air
Resources Board has
determined that the failure to
perform this maintenance item
will not nullify the emission
warranty or limit recall liability
prior to the completion of the
vehicle's useful life. We,
however, urge that all
recommended maintenance
services be performed at the
indicated intervals and the
maintenance be recorded.
First Engine Oil Change After
Every 160 000 km/100,000 Miles.Automatic transmission fluid
change (normal service). See
Automatic Transmission Fluid on
page 10‑14.
.Spark plug replacement and
spark plug wires inspection.
An Emission Control Service. First Engine Oil Change After
Every 240 000 km/150,000 Miles
.Engine cooling system drain,
flush, and refill (or every
five years, whichever occurs
first). See
Cooling System on
page 10‑17. An Emission
Control Service.
.Engine drive belts inspection
for fraying, excessive cracks,
or obvious damage (or every
10 years, whichever occurs
first). Replace, if needed.

Black plate (3,1)Buick Regal Owner Manual - 2011
Technical Data 12-3
ApplicationCapacities
Metric English
Transmission Fluid* (Drain and Refill)
2.0L L4 Engine, 6–Speed Automatic (Transmission
Requires No Fluid Replacement) — —
2.4L L4 Engine, 6–Speed Automatic 8.4 L 8.9 qt
Wheel Nut Torque 150 Y110 lb ft
*See Automatic Transmission Fluid on page 10‑14 for information on checking fluid level.
All capacities are approximate. When adding, be sure to fill to the approximate level, as recommended in this
manual. Recheck fluid level after filling.
Engine Specifications
Engine VIN CodeTransmission Spark Plug Gap
2.0L L4 Engine VAutomatic 0.9 mm (0.035 in)
2.4L L4 Engine CAutomatic 0.9 mm (0.035 in)

Black plate (1,1)Buick Regal Owner Manual - 2011
INDEX i-1
A
Accessories andModifications . . . . . . . . . . . . . . . . . 10-3
Accessory Power . . . . . . . . . . . . . . 9-21
Add-On Electrical Equipment . . . . . . . . . . . . . . . . . . . 9-50
Adjustments
Lumbar, Front Seats . . . . . . . . . . . 3-5
Air Cleaner/Filter, Engine . . . . . 10-15
Air Filter, Passenger Compartment . . . . . . . . . . . . . . . . . 8-4
Air Vents . . . . . . . . . . . . . . . . . . . . . . . 8-4
Airbag Adding Equipment to theVehicle . . . . . . . . . . . . . . . . . . . . . . 3-38
Airbag System
Check . . . . . . . . . . . . . . . . . . . . . . . . 3-39
How Does an AirbagRestrain? . . . . . . . . . . . . . . . . . . . 3-32
Passenger Sensing
System . . . . . . . . . . . . . . . . . . . . . . 3-34
What Makes an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . . 3-32 Airbag System (cont.)
What Will You See after an
Airbag Inflates? . . . . . . . . . . . . . 3-32
When Should an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . 3-30
Where Are the Airbags? . . . . . . 3-29
Airbags Passenger Status Indicator . . . 5-12
Readiness Light . . . . . . . . . . . . . . 5-11
Servicing Airbag-EquippedVehicles . . . . . . . . . . . . . . . . . . . . . 3-38
System Check . . . . . . . . . . . . . . . . 3-27
Alarm System Anti-theft . . . . . . . . . . . . . . . . . . . . . . . 2-9
AM-FM Radio . . . . . . . . . . . . . . . . . . . 7-7
Antenna Satellite Radio . . . . . . . . . . . . . . . . 7-14
Anti-theft
Alarm System . . . . . . . . . . . . . . . . . 2-9
Alarm System Messages . . . . . 5-29
Antilock Brake System (ABS) . . . . . . . . . . . . . . . . 9-30
Warning Light . . . . . . . . . . . . . . . . . 5-17
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . 10-77
Interior . . . . . . . . . . . . . . . . . . . . . . 10-80 Assistance Program,
Roadside . . . . . . . . . . . . . . . . . . . . . 13-5
Audio Players . . . . . . . . . . . . . . . . . 7-14 CD . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-14
Audio System Backglass Antenna . . . . . . . . . . . 7-13
Radio Reception . . . . . . . . . . . . . . 7-13
Theft-Deterrent Feature . . . . . . . . 7-2
Automatic Headlamp System . . . . . . . . . . . . . 6-3
Automatic Transmission . . . . . . . 9-25
Fluid . . . . . . . . . . . . . . . . . . . . . . . . 10-14
Manual Mode . . . . . . . . . . . . . . . . . 9-28
Shift Lock ControlFunction Check . . . . . . . . . . . 10-28
Auxiliary Devices . . . . . . . . . . . . . . 7-17
B
Battery . . . . . . . . . . . . . . . . . . . . . . . 10-27
Jump Starting . . . . . . . . . . . . . . . 10-70
Power Protection . . . . . . . . . . . . . . 6-6
Voltage and ChargingMessages . . . . . . . . . . . . . . . . . . . 5-26
Blade Replacement, Wiper . . . 10-30
Bluetooth . . . . . . . . . . 7-20, 7-21, 7-23
Brake System Warning Light . . . 5-16

Black plate (2,1)Buick Regal Owner Manual - 2011
i-2 INDEX
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 10-25Antilock . . . . . . . . . . . . . . . . . . . . . . . 9-30
Assist . . . . . . . . . . . . . . . . . . . . . . . . . 9-33
Fluid . . . . . . . . . . . . . . . . . . . . . . . . 10-26
Parking . . . . . . . . . . . . . . . . . . . . . . . 9-31
System Messages . . . . . . . . . . . . 5-26
Braking . . . . . . . . . . . . . . . . . . . . . . . . . 9-3
Break-In, New Vehicle . . . . . . . . . 9-16
Bulb Replacement . . . . . . . . . . . . 10-34
Fog Lamps . . . . . . . . . . . . . 10-32, 6-4
Halogen Bulbs . . . . . . . . . . . . . . 10-31
Headlamp Aiming . . . . . . . . . . . 10-30
Headlamps . . . . . . . . . . . . . . . . . 10-31
Headlamps, Front TurnSignal, and Parking
Lamps . . . . . . . . . . . . . . . . . . . . 10-31
License Plate Lamps . . . . . . . 10-34
Taillamps, Turn Signal, Stoplamps, and
Back-up Lamps . . . . . . . . . . . 10-33
Buying New Tires . . . . . . . . . . . . . 10-57C
Calibration . . . . . . . . . . . . . . . . . . . . . . 5-4
California
Fuel Requirements . . . . . . . . . . . 9-45
Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . 10-3
Warning . . . . . . . . . . . . . . . . . . . . . . 10-3
Canadian Vehicle Owners . . . . . . . . iii
Capacities and Specifications . . . . . . . . . . . . . . . . 12-2
Carbon Monoxide
Engine Exhaust . . . . . . . . . . . . . . . 9-24
Trunk . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Winter Driving . . . . . . . . . . . . . . . . . 9-9
Cargo Net . . . . . . . . . . . . . . . . . . . . . . 4-3
Cautions, Danger, and Warnings . . . . . . . . . . . . . . . . . . . . . . . . iii
CD Player . . . . . . . . . . . . . . . . . . . . . 7-14
Center Console Storage . . . . . . . . 4-2
Chains, Tire . . . . . . . . . . . . . . . . . . 10-62
Charging System Light . . . . . . . . 5-13
Check Engine Light . . . . . . . . . . . . . . . . . . 5-13
IgnitionTransmission Lock . . . . . . . . 10-29 Child Restraints
Infants and Young
Children . . . . . . . . . . . . . . . . . . . . . 3-43
Lower Anchors and Tethers for Children . . . . . . . . . 3-49
Older Children . . . . . . . . . . . . . . . . 3-40
Securing . . . . . . . . . . . . . . . . 3-57, 3-59
Systems . . . . . . . . . . . . . . . . . . . . . . 3-45
Circuit Breakers . . . . . . . . . . . . . . 10-36
Cleaning Exterior Care . . . . . . . . . . . . . . . 10-77
Interior Care . . . . . . . . . . . . . . . . 10-80
Climate Control Systems Dual Automatic . . . . . . . . . . . . . . . . 8-1
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Cluster, Instrument . . . . . . . . . . . . . 5-8
Clutch, Hydraulic . . . . . . . . . . . . . 10-14
Collision Damage Repair . . . . . . 13-9
Compact Spare Tire . . . . . . . . . . 10-69
Compass . . . . . . . . . . . . . . . . . . . . . . . 5-4 Messages . . . . . . . . . . . . . . . . . . . . 5-26
Control of a Vehicle . . . . . . . . . . . . . 9-3
Convenience Net . . . . . . . . . . . . . . . 4-3
Convex Mirrors . . . . . . . . . . . . . . . . 2-10

Black plate (4,1)Buick Regal Owner Manual - 2011
i-4 INDEX
EngineAir Cleaner/Filter . . . . . . . . . . . 10-15
Check and Service Engine
Soon Light . . . . . . . . . . . . . . . . . . 5-13
Compartment Overview . . . . . . . 10-6
Coolant . . . . . . . . . . . . . . . . . . . . . 10-18
Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . 5-10
Cooling System . . . . . . . . . . . . . 10-17
Cooling System Messages . . . 5-27
Drive Belt Routing . . . . . . . . . . . . 12-4
Exhaust . . . . . . . . . . . . . . . . . . . . . . 9-24
Heater . . . . . . . . . . . . . . . . . . . . . . . . 9-20
Overheating . . . . . . . . . . . . . . . . 10-21
Power Messages . . . . . . . . . . . . . 5-28
Pressure Light . . . . . . . . . . . . . . . . 5-20
Running While Parked . . . . . . . . 9-24
Starting . . . . . . . . . . . . . . . . . . . . . . . 9-18
Engine Oil Life System . . . . . . . . . . . . . . . . . 10-13
Messages . . . . . . . . . . . . . . . . . . . . 5-28
Entry Lighting . . . . . . . . . . . . . . . . . . . 6-6
Event Data Recorders . . . . . . . . 13-14
Exit Lighting . . . . . . . . . . . . . . . . . . . . 6-6 Extender, Safety Belt . . . . . . . . . . 3-25
Exterior Lamp Controls . . . . . . . . . 6-1
Exterior Lamps Off Reminder . . . 6-2
F
Filter,
Engine Air Cleaner . . . . . . . . . 10-15
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 6-2
Flashers, Hazard Warning . . . . . . 6-3
Flat Tire . . . . . . . . . . . . . . . . . . . . . . 10-62 Changing . . . . . . . . . . . . . . . . . . . 10-63
Floor Mats . . . . . . . . . . . . . . . . . . . . 10-83
Fluid Automatic Transmission . . . . 10-14
Brakes . . . . . . . . . . . . . . . . . . . . . . 10-26
Power Steering . . . . . . . . . . . . . 10-23
Washer . . . . . . . . . . . . . . . . . . . . . 10-24
Fog Lamps
Bulb Replacement . . . . . . 10-32, 6-4
Folding Mirrors . . . . . . . . . . . . . . . . 2-11
Front Fog Lamp Light . . . . . . . . . . . . . . . . . . . . . . . . . . 5-21
Front Seats
Adjustment . . . . . . . . . . . . . . . . . . . . 3-4
Heated . . . . . . . . . . . . . . . . . . . . . . . . 3-8 Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-44
Additives . . . . . . . . . . . . . . . . . . . . . 9-46
E85 (85% Ethanol) . . . . . . . . . . . 9-47
Filling a Portable Fuel
Container . . . . . . . . . . . . . . . . . . . 9-49
Filling the Tank . . . . . . . . . . . . . . . 9-48
Fuels in Foreign Countries . . . . 9-45
Gasoline Specifications . . . . . . . 9-45
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
Low Fuel Warning Light . . . . . . . 5-20
Recommended . . . . . . . . . . . . . . . 9-44
Requirements, California . . . . . 9-45
System Messages . . . . . . . . . . . . 5-28
Fuel Economy Driving . . . . . . . . . . . . . . . . . . . . . . . . 1-19
Fuses
Engine CompartmentFuse Block . . . . . . . . . . . . . . . . 10-36
Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . 10-36
Instrument Panel Fuse
Block . . . . . . . . . . . . . . . . . . . . . . 10-40