Black plate (51,1)Buick Lucerne Owner Manual - 2011
ENGINE POWER IS REDUCED
This message displays when the vehicle's engine
power is reduced. Reduced engine power can affect the
vehicle's ability to accelerate. If this message is on, but
there is no reduction in performance, proceed to your
destination. The performance may be reduced the next
time the vehicle is driven. The vehicle may be driven
at a reduced speed while this message is on, but
acceleration and speed may be reduced. Anytime this
message stays on, the vehicle should be taken to your
dealer for service as soon as possible.
ERROR
This message displays while viewing the odometer or
trip odometers if there is a problem with the instrument
panel cluster. See your dealer for service.
FUEL LEVEL LOW
This message displays when your vehicle is low on
fuel. Refill the fuel tank as soon as possible. See
Fuel Gauge
on page 4‑41andFilling the Tankon
page 6‑9for more information.
HOOD OPEN
If your vehicle has the remote start feature, this
message displays when the hood is not closed properly.
Make sure that the hood is closed completely. See
Hood Release on page 6‑13.
ICE POSSIBLE DRIVE WITH CARE
This message displays when the outside air
temperature is cold enough to create icy road
conditions. Adjust your driving accordingly.
LANE DEPARTURE SYSTEM
UNAVAILABLE
If your vehicle has the Lane Departure Warning (LDW)
system, this message may display if the LDW system
does not activate due to a temporary condition. See
Lane Departure Warning (LDW)
on page 3‑40for more
information.
LEFT REAR DOOR OPEN
This message displays when the driver side rear door is
not closed properly. Make sure that the door is closed
completely.
OIL LEVEL LOW ADD OIL
On some vehicles, this message displays when the
vehicle's engine oil is low. Fill the oil to the proper
level as soon as possible. See Engine Compartment
Overview
on page 6‑14for the engine oil fill location.
Also, see Engine Oilon page 6‑18for information on
the kind of oil to use and the proper oil level.
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Black plate (13,1)Buick Lucerne Owner Manual - 2011
Before Leaving on a Long Trip
To prepare your vehicle for a long trip, consider having
it serviced by your dealer before departing.
Things to check on your own include:
.Windshield Washer Fluid:Reservoir full? Windows
clean —inside and outside?
.Wiper Blades: In good shape?
.Fuel, Engine Oil, Other Fluids: All levels checked?
.Lamps:Do they all work and are lenses clean?
.Tires:Are treads good? Are tires inflated to
recommended pressure?
.Weather and Maps: Safe to travel? Have
up-to-date maps?
Highway Hypnosis
Always be alert and pay attention to your surroundings
while driving. If you become tired or sleepy, find a safe
place to park your vehicle and rest.
Other driving tips include:
.Keep the vehicle well ventilated.
.Keep interior temperature cool.
.Keep your eyes moving —scan the road ahead
and to the sides.
.Check the rearview mirror and vehicle instruments
often.
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Black plate (15,1)Buick Lucerne Owner Manual - 2011
A.Underhood Fuse Block on page 6‑108.
B. Remote Positive (+) Battery Terminal. See Jump
Starting on page 6‑44.
C. Windshield Washer Fluid Reservoir. See “Adding
Washer Fluid” underWindshield Washer Fluid
on
page 6‑38.
D. Engine Coolant Recovery Tank. See Cooling
System on page 6‑27.
E. Radiator Pressure Cap. See Cooling System
on
page 6‑27.
F. Power Steering Fluid Reservoir. See Power
Steering Fluid on page 6‑37. G. Engine Oil Fill Cap. See
“When to Add Engine Oil”
under Engine Oil on page 6‑18.
H. Engine Oil Dipstick. See “Checking Engine Oil”
under Engine Oil on page 6‑18.
I. Automatic Transmission Fluid Dipstick. See “Checking the Fluid Level” underAutomatic
Transmission Fluid on page 6‑24.
J. Brake Fluid Reservoir. See “Brake Fluid”under
Brakes on page 6‑39.
K. Engine Air Cleaner/Filter on page 6‑23.
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Black plate (18,1)Buick Lucerne Owner Manual - 2011
Engine Oil
To ensure proper engine performance and long life,
careful attention must be paid to engine oil. Following
these simple, but important steps will help protect your
investment:
.Always use engine oil approved to the proper
specification and of the proper viscosity grade. See
“Selecting the Right Engine Oil”in this section.
.Check the engine oil level regularly and maintain
the proper oil level. See“Checking Engine Oil”and
“When to Add Engine Oil” in this section.
.Change the engine oil at the appropriate time. See
Engine Oil Life System on page 6‑22.
.Always dispose of engine oil properly. See “What
to Do with Used Oil” in this section.
Checking Engine Oil
It is a good idea to check the engine oil level at each
fuel fill. In order to get an accurate reading, the vehicle
must be on level ground. The engine oil dipstick handle
is a yellow loop. See Engine Compartment Overview
on
page 6‑14for the location of the engine oil dipstick.
Obtaining an accurate oil level reading is essential: 1. If the engine has been running recently, turn off the engine and allow several minutes for the oil to
drain back into the oil pan. Checking the oil level
too soon after engine shutoff will not provide an
accurate oil level reading.
2. Pull out the dipstick and clean it with a paper towel or cloth, then push it back in all the way. Remove it
again, keeping the tip down, and check the level.
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Black plate (19,1)Buick Lucerne Owner Manual - 2011
When to Add Engine Oil
3.9L V6 Engine
4.6L V8 Engine
If the oil is below the cross-hatched area at the tip of
the dipstick, add 1 L (1 qt) of the recommended oil
and then recheck the level. See “Selecting the Right
Engine Oil” in this section for an explanation of what
kind of oil to use. For engine oil crankcase capacity, see
Capacities and Specifications on page 6‑116. Notice:
Do not add too much oil. Oil levels above or
below the acceptable operating range shown on the
dipstick are harmful to the engine. If you find that
you have an oil level above the operating range, i.e.,
the engine has so much oil that the oil level gets
above the cross-hatched area that shows the proper
operating range, the engine could be damaged. You
should drain out the excess oil or limit driving of the
vehicle and seek a service professional to remove
the excess amount of oil.
See Engine Compartment
Overviewon page 6‑14for the location of the
engine oil fill cap.
Add enough oil to put the level somewhere in the proper
operating range. Push the dipstick all the way back in
when through.
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Black plate (20,1)Buick Lucerne Owner Manual - 2011
Selecting the Right Engine Oil
Selecting the right engine oil depends on both the
proper oil specification and viscosity grade:
Specification
Use and ask for engine oils with the dexos™
certification mark. Oils meeting the requirements of the
vehicle should have the dexos certification mark on the
container. This certification mark indicates that the oil
has been approved to the dexos specification.
This vehicle was filled at the factory with
dexos‐approved engine oil.Notice:
Use only engine oil that is approved to
the dexos specification or an equivalent engine
oil of the appropriate viscosity grade. Engine oils
approved to the dexos specification will show the
dexos symbol on the container. Failure to use the
recommended engine oil or equivalent can result in
engine damage not covered by the vehicle warranty.
If you are unsure whether the oil is approved to the
dexos specification, ask your service provider.
Use of Substitute Engine Oils if dexos is unavailable:
In the event that dexos‐approved engine oil is not
available at an oil change or for maintaining proper
oil level, you may use substitute engine oil displaying
the API Starburst symbol and of SAE 5W-30 viscosity
grade. Use of oils that do not meet the dexos
specification, however, may result in reduced
performance under certain circumstances.
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Black plate (22,1)Buick Lucerne Owner Manual - 2011
Engine Oil Life System
When to Change Engine Oil
This vehicle has a computer system that indicates when
to change the engine oil and filter. This is based on
engine revolutions and engine temperature, and not on
mileage. Based on driving conditions, the mileage at
which an oil change is indicated can vary considerably.
For the oil life system to work properly, the system must
be reset every time the oil is changed.
When the system has calculated that oil life has been
diminished, it indicates that an oil change is necessary.
A CHANGE ENGINE OIL SOON message comes on.
SeeDIC Warnings and Messages
on page 4‑49.
Change the oil as soon as possible within the next
600 miles (1 000 km). It is possible that, if driving under
the best conditions, the oil life system might indicate
that an oil change is not necessary for up to a year. The
engine oil and filter must be changed at least once a
year and, at this time, the system must be reset. Your
dealer has trained service people who will perform this
work and reset the system. It is also important to check
the oil regularly over the course of an oil drain interval
and keep it at the proper level. If the system is ever reset accidentally, the oil must be
changed at 3,000 miles (5 000 km) since the last oil
change. Remember to reset the oil life system
whenever the oil is changed.
How to Reset the Engine Oil Life
System
Reset the system whenever the engine oil is changed
so that the system can calculate the next engine oil
change. Always reset the engine oil life to 100% after
every oil change. It will not reset itself. To reset the
system:
1. Display the OIL LIFE REMAINING on the DIC.
2. Press and hold the SET/RESET button on the DIC for more than five seconds. The oil life will change
to 100%.
If the CHANGE ENGINE OIL SOON message comes
back on when the vehicle is started, the engine oil life
system has not been reset. Repeat the procedure.
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Black plate (24,1)Buick Lucerne Owner Manual - 2011
To reinstall the cover:1. Align the two hinges located on the inboard side of the cover.
2. Push the cover slightly down and towards the engine to engage the tabs in the hinges and align
the two screws.
3. Tighten the two screws on the top of the engine air cleaner/filter cover.
{WARNING:
Operating the engine with the air cleaner/filter off
can cause you or others to be burned. The air
cleaner not only cleans the air; it helps to stop
flames if the engine backfires. Use caution when
working on the engine and do not drive with the
air cleaner/filter off.
Notice: If the air cleaner/filter is off, dirt can easily
get into the engine, which could damage it. Always
have the air cleaner/filter in place when you are
driving.
Automatic Transmission Fluid
When to Check and Change Automatic
Transmission Fluid
A good time to check the automatic transmission fluid
level is when the engine oil is changed.
Change the fluid and filter at the intervals listed in
Scheduled Maintenance
on page 7‑3and be sure
to use the transmission fluid listed in Recommended
Fluids and Lubricants on page 7‑8.
How to Check Automatic Transmission
Fluid (3.9L Engine)
Because this operation can be a little difficult, you
may choose to have this done at the dealer service
department.
If you do it yourself, be sure to follow all the instructions
here, or you could get a false reading on the dipstick.
Notice: Too much or too little fluid can damage
the transmission. Too much can mean that some
of the fluid could come out and fall on hot engine
parts or exhaust system parts, starting a fire. Too
little fluid could cause the transmission to overheat.
Be sure to get an accurate reading if checking the
transmission fluid.
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