2007 BUICK RANDEZVOUS service

Malfunction Indicator Lamp
Service Engine Soon Light in the
United States or Check Engine Light in
Canada
Your vehicle has a computer which monitors
operation of the fuel, ignition, and emission control
systems.
This system is called OBD II (On-Board
Diagnostics-Second Generation) and is intended
to assure that emissions are at acceptable
levels for the life of the vehicle, helping to produce
a cleaner environment. The SERVICE ENGINE
SOON or check engine light comes on to indicate
that there is a problem and service is required.
Malfunctions often will be indicated by the system
before any problem is apparent. This mayprevent more serious damage to your vehicle.
This system is also designed to assist your service
technician in correctly diagnosing any malfunction.
Notice:If you keep driving your vehicle
with this light on, after awhile, your emission
controls may not work as well, your fuel
economy may not be as good, and your engine
may not run as smoothly. This could lead to
costly repairs that may not be covered by your
warranty.
Notice:Modications made to the engine,
transaxle, exhaust, intake, or fuel system
of your vehicle or the replacement of the
original tires with other than those of the same
Tire Performance Criteria (TPC) can affect
your vehicle’s emission controls and may
cause this light to come on. Modications to
these systems could lead to costly repairs not
covered by your warranty. This may also
result in a failure to pass a required Emission
Inspection/Maintenance test. SeeAccessories
and Modifications on page 354.
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This light should come on, as a check to show
you it is working, when the ignition is on and the
engine is not running. If the light does not
come on, have it repaired. This light will also
come on during a malfunction in one of two ways:
Light Flashing— A misre condition has
been detected. A misre increases vehicle
emissions and may damage the emission
control system on your vehicle. Diagnosis and
service may be required.
Light On Steady— An emission control
system malfunction has been detected on your
vehicle. Diagnosis and service may be
required.
If the Light Is Flashing
The following may prevent more serious damage
to your vehicle:
Reducing vehicle speed
Avoiding hard accelerations
Avoiding steep uphill grades
If you are towing a trailer, reduce the amount of
cargo being hauled as soon as it is possibleIf the light stops ashing and remains on steady,
see “If the Light Is On Steady” following.
If the light continues to ash, when it is safe to do
so, stop the vehicle. Find a safe place to park
your vehicle. Turn the key off, wait at least
10 seconds and restart the engine. If the light
remains on steady, see “If the Light Is On Steady”
following. If the light is still ashing, follow the
previous steps, and see your dealer for service as
soon as possible.
If the Light Is On Steady
You may be able to correct the emission system
malfunction by considering the following:
Did you recently put fuel into your vehicle?
If so, reinstall the fuel cap, making sure to fully
install the cap. SeeFilling the Tank on page 359.
The diagnostic system can determine if the
fuel cap has been left off or improperly installed.
A loose or missing fuel cap will allow fuel to
evaporate into the atmosphere. A few driving trips
with the cap properly installed should turn the
light off.
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Did you just drive through a deep puddle of
water?
If so, your electrical system may be wet. The
condition will usually be corrected when the
electrical system dries out. A few driving trips
should turn the light off.
Have you recently changed brands of fuel?
If so, be sure to fuel your vehicle with quality fuel.
SeeGasoline Octane on page 356. Poor fuel
quality will cause your engine not to run as
efficiently as designed. You may notice this as
stalling after start-up, stalling when you put
the vehicle into gear, misring, hesitation on
acceleration, or stumbling on acceleration. (These
conditions may go away once the engine is
warmed up.) This will be detected by the system
and cause the light to turn on.
If you experience one or more of these conditions,
change the fuel brand you use. It will require at
least one full tank of the proper fuel to turn the
light off.If none of the above steps have made the light
turn off, your dealer can check the vehicle.
Your dealer has the proper test equipment and
diagnostic tools to x any mechanical or electrical
problems that may have developed.
Emissions Inspection and Maintenance
Programs
Some state/provincial and local governments have
or may begin programs to inspect the emission
control equipment on your vehicle. Failure to pass
this inspection could prevent you from getting a
vehicle registration.
Here are some things you need to know in order
to help your vehicle pass an inspection:
Your vehicle will not pass this inspection if the
SERVICE ENGINE SOON or check engine light is
on or not working properly.
Your vehicle will not pass this inspection if the OBD
(on-board diagnostic) system determines that
critical emission control systems have not been
completely diagnosed by the system. The vehicle
would be considered not ready for inspection.
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Passenger Seatbelt Reminder
Message
If your vehicle has the
passenger sensing
system, this message
reminds the passenger
to buckle their
seatbelt.
This message will come on and a chime will
sound when the following conditions exist:
The ignition is ON,
the passenger’s seatbelt is not buckled,
a passenger is detected by the passenger
sensing system.
This light and chime will be repeated if the
ignition is on, the vehicle is in motion,
the passenger is still unbuckled and the
passenger airbag is enabled. You should
buckle your seatbelt. If the passenger’s
seatbelt is already buckled, this message and
chime will not come on.
Service Traction System Warning
Message
If your vehicle has the Traction Control System
(TCS) and this message is displayed when you are
driving, there may be a problem with your TCS.
Your vehicle may need service.
When this message is displayed, the TCS will not
limit wheel spin. Adjust your driving accordingly.
If there is an engine-related and brake system
problem that is specically related to traction
control, the TCS will turn off and the warning
message will come on.
If the TCS warning message comes on and stays
on for an extended period of time when the
system is turned on, your vehicle needs service.
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Low Oil Pressure Message
Your vehicle may have a low oil pressure warning
message.
Your oil pressure message lets you know when
you may have a problem with your engine oil
pressure.
When the engine is running and this message
appears, the engine oil level may be too low.
There may also be another problem causing low
oil pressure.
{CAUTION:
Do not keep driving if the oil pressure is
low. If you do, your engine can become so
hot that it catches re. You or others
could be burned. Check your oil as soon
as possible and have your vehicle
serviced.
Notice:Lack of proper engine oil maintenance
may damage the engine. The repairs would
not be covered by your warranty. Always follow
the maintenance schedule in this manual for
changing engine oil.
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Change Engine Oil Message
When this message comes on and stays on after
you have started the engine, it means that
service is required for your vehicle. SeeScheduled
Maintenance on page 475andEngine Oil on
page 365for more information.
Door Ajar Warning Message
This message will come on when the ignition is
turned to ON or START and the driver’s or
passenger’s door is open.
Rear Hatch Ajar Warning Message
This message will come on when the ignition is
turned to ON or START and the liftgate is open.
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Check Gas Cap Message
If your vehicle has this
message, it will come
on when the ignition
is turned to ON or
START and the gas cap
is open.
PASS-Key®III Security Message
If you are ever driving and this message comes
on and stays on, you will be able to restart
your engine if you turn it off.Your PASS-Key
®III system, however, is not
working properly and must be serviced by your
dealer. Your vehicle is not protected by the
PASS-Key
®III system at this time. See
PASS-Key®III on page 124for more information.
Low Washer Fluid Warning
Message
Your vehicle may have a low washer uid warning
message. If your washer uid is low, this warning
message will come on and stay on until you
add washer uid. SeeWindshield Washer Fluid on
page 388for adding washer uid instructions.
If the warning message is still on after adding uid,
you need to reset the warning message. To
reset the warning message, turn the ignition off
and then back on. If the message stays on,
see your dealer.
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Low Fuel Warning Message
If your fuel is low, the warning message will come
on and stay on until you add fuel.
If the warning message is still on after adding fuel,
you need to reset the warning message. To
reset the warning message, turn the ignition off
and then back on. If the message stays on,
see your dealer.
Low Brake Fluid Warning Message
If your brake uid is low, the warning message will
come on and stay on until you add brake uid.
The brake system warning light will also be
illuminated.
If this message appears, the brakes need
attention. You should have your vehicle serviced
immediately. SeeBrake System Warning Light
on page 219andBrakes on page 389.
If the warning message is still on after adding
uid, you may need to reset the warning message.
To reset the warning message, turn the ignition
off and then back on. If the message stays on, see
your dealer right away.
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