engine BUICK RANDEZVOUS 2007 Owner's Guide

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Retro-Active Reset
The trip odometer has a feature called retro-active
reset. This feature can be used to set the trip
odometer to the number of miles or kilometers
driven since the ignition was last turned on. This
can be used if you forget to reset your trip odometer
at the beginning of a trip. To use the retro-active
reset feature, push and hold the trip/reset button for
at least ve seconds. The trip odometer will then
display the number of miles or kilometers driven
since the ignition was last turned on and you began
driving. If you use the retro-active reset feature after
you have started the vehicle, but before you begin
moving, the display will show the number of miles
or kilometers you drove during the last ignition
cycle. Once you begin driving, the trip odometer will
accumulate mileage. For example, if you have
driven 5.0 miles (8.0 km) since you started your
vehicle, and then activate the retro-active reset
feature, the display will show 5.0 miles (8.0 km). As
you drive, the display will then increase to 5.1 miles
(8.2 km), 5.2 miles (8.4 km), etc.
Tachometer
The tachometer displays
the engine speed in
revolutions per
minute (rpm).
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Page 220 of 528

Anti-Lock Brake System
Warning Light
Your vehicle may have an Anti-Lock Brake System
(ABS) warning light. If it does, the light should come
on for a few seconds when you turn the ignition key
to ON. If the ABS warning light stays on longer than
normal after you have started your engine, turn the
ignition off. If the light comes on and stays on when
you are driving, stop as soon as possible and turn
the ignition off. Then start the engine again to reset
the system. If the light still stays on, or comes on
again while you are driving, the ABS needs service
and you do not have anti-lock brakes.The ABS warning light should come on briey
when you turn the ignition key to ON. If the light
does not come on then, have it xed so it will
be ready to warn you if there is a problem.
Traction Control System (TCS)
Warning Light
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Your vehicle may have a Traction Control System
(TCS) warning light. The TCS warning light
may come on for the following reasons:
If you turn the TCS off by pressing the TRAC
OFF button located in the instrument panel
switchbank the TCS warning light will come on
and stay on. To turn the system back on,
press the button again. The TCS warning light
should go off. SeeTraction Control System
(TCS) on page 310for more information.
If there is an engine-related and brake system
problem that is specically related to traction
control, the TCS will turn off and the TCS
warning light will come on.
If the TCS warning light comes on and stays on
for an extended period of time when the system is
turned on, your vehicle needs service.
Engine Coolant Temperature Gage
This gage shows the engine coolant temperature.
If the gage pointer moves near the “H”, your
engine is too hot!
It means that your engine coolant has overheated.
If you have been operating your vehicle under
normal driving conditions, you should pull off the
road, stop your vehicle and turn off the engine
as soon as possible.
SeeEngine Overheating on page 378.
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Page 222 of 528

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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Page 223 of 528

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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Page 226 of 528

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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Traction Active Message
If your vehicle has the Traction Control System
(TCS), the TRACTION ACTIVE message will
appear when the TCS is limiting wheel spin. You
may feel or hear the system working, but this
is normal.
Slippery road conditions may exist if this message
appears, so adjust your driving accordingly.
This message will stay on for a few seconds after
the TCS stops limiting wheel spin.
Engine Coolant Temperature
Warning Message
This message will come on when your engine gets
too hot.
If this message comes on, it means that your
engine coolant has overheated. If you have been
operating your vehicle under normal driving
conditions, you should pull off the road, stop your
vehicle and turn off the engine as soon as
possible.
SeeEngine Overheating on page 378.
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Page 228 of 528

Charging System Indicator Message
The charging system
battery symbol will
come on in the message
center when you turn
on the ignition as
a check to show you it
is working.
It will remain on as long as the engine is not
running. It should go out once the engine
is running. If it stays on, or comes on while you
are driving, you may have a problem with the
charging system. It could indicate that you have
problems with a generator drive belt, or another
electrical problem. Have it checked right away.
Driving while this indicator appears in the message
center could drain your battery.
If you must drive a short distance with the
message on, be certain to turn off all your
accessories, such as the radio and air conditioner.
Reduced Engine Power Message
If your vehicle has this feature, this message will
appear in the message center when a noticeable
reduction in the vehicle’s engine performance
is detected. This message will also appear when
your vehicle is in overheated engine protection
operating mode. SeeEngine Overheating on
page 378for more information.
If this message comes on and stays on, see your
dealer.
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Page 229 of 528

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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