2007 BUICK RANDEZVOUS sensor

In addition, your vehicle has “dual stage” frontal
airbags, which adjust the restraint according
to crash severity. Your vehicle has electronic
frontal sensors which help the sensing system
distinguish between a moderate and a more
severe frontal impact. For moderate frontal
impacts, these airbags inate at a level less than
full deployment. For more severe frontal
impacts, full deployment occurs. If the front of your
vehicle goes straight into a wall that does not
move or deform, the threshold level for the
reduced deployment is about 12 to 20 mph
(19 to 33 km/h), and the threshold level for a full
deployment is about 21 to 25 mph (34 to 40 km/h).
The threshold level can vary, however, with
specic vehicle design, so that it can be somewhat
above or below this range.Frontal airbags may inate at different crash
speeds. For example:
If the vehicle hits a stationary object, the
airbags could inate at a different crash speed
than if the vehicle hits a moving object.
If the vehicle hits an object that deforms, the
airbags could inate at a different crash
speed than if the vehicle hits an object that
does not deform.
If the vehicle hits a narrow object (like a pole),
the airbags could inate at a different crash
speed than if the vehicle hits a wide object
(like a wall).
If the vehicle goes into an object at an angle,
the airbags could inate at a different crash
speed than if the vehicle goes straight into the
object.
Frontal airbags (driver and right front passenger)
are not intended to inate during vehicle
rollovers, rear impacts, or in many side impacts.
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Passenger Sensing System
Your vehicle has a passenger sensing system.
The passenger airbag status indicator in the
rearview mirror will be visible when you turn your
ignition key to ON or START.The words ON and OFF or the symbol for on and
off, will be visible during the system check.
When the system check is complete, either the
word ON or the word OFF, or the symbol for on or
the symbol for off will be visible. SeePassenger
Airbag Status Indicator on page 217.
The passenger sensing system will turn off the
right front passenger’s frontal airbag under certain
conditions. The driver’s airbags are not part of
the passenger sensing system.
The passenger sensing system works with
sensors that are part of the right front passenger’s
seat and safety belt. The sensors are designed
to detect the presence of a properly-seated
occupant and determine if the passenger’s frontal
airbag should be enabled (may inate) or not.
Accident statistics show that children are safer if
they are restrained in the rear rather than the front
seat. General Motors recommends that child
restraints be secured in a rear seat, including an
infant riding in a rear-facing infant seat, a child
riding in a forward-facing child seat and an older
child riding in a booster seat.
United States
Canada
98

Adding Equipment to Your
Airbag-Equipped Vehicle
Q:Is there anything I might add to the front
or sides of the vehicle that could keep the
airbags from working properly?
A:Yes. If you add things that change your
vehicle’s frame, bumper system, height,
front end or side sheet metal, they may keep
the airbag system from working properly.
Also, the airbag system may not work properly
if you relocate any of the airbag sensors. If
you have any questions about this, you should
contact Customer Assistance before you
modify your vehicle. The phone numbers and
addresses for Customer Assistance are in
Step Two of the Customer Satisfaction
Procedure in this manual. SeeCustomer
Satisfaction Procedure on page 492.
Q:Because I have a disability, I have to get
my vehicle modied. How can I nd out
whether this will affect my airbag system?
A:Changing or moving any parts of the
front seats, safety belts, the airbag sensing
and diagnostic module, the inside rearview
mirror, steering wheel, or airbag wiring
can affect the operation of the airbag system.
If you have questions, call Customer
Assistance. The phone numbers and
addresses for Customer Assistance are in
Step Two of the Customer Satisfaction
Procedure in this manual. SeeCustomer
Satisfaction Procedure on page 492.
103

Notice:Driving in SECOND (2) for more than
25 miles (40 km) or at speeds over 55 mph
(90 km/h) may damage the transaxle. Also,
shifting into SECOND (2) at speeds above
65 mph (105 km/h) can cause damage. Drive in
THIRD (3) or DRIVE (D) instead of SECOND (2).
Notice:If your vehicle seems to start up
rather slowly, or if it seems not to shift gears
as you go faster, something may be wrong with
a transaxle system sensor. If you drive very
far that way, your vehicle can be damaged.
So, if this happens, have your vehicle serviced
right away. Until then, you can use SECOND (2)
when you are driving less than 35 mph
(55 km/h) and THIRD (3) for higher speeds.
FIRST (1):This position reduces vehicle speed
more than SECOND (2) without using your brakes.
You can use it on very steep hills, or in deep
snow or mud. If the shift lever is put in FIRST (1),
the transaxle will not shift into rst gear until
the vehicle is going slowly enough.
Notice:Spinning the tires or holding the
vehicle in one place on a hill using only the
accelerator pedal may damage the transaxle. If
you are stuck, do not spin the tires. When
stopping on a hill, use the brakes, or parking
brake to hold the vehicle in place.Parking Brake
The parking brake is
located under the
instrument panel on the
driver’s side of the
vehicle.
To set the parking brake, hold the regular brake
pedal down with your right foot and push down on
the parking brake pedal with your left foot.
If the ignition is on, the brake system warning light
will come on. SeeBrake System Warning Light
on page 219.
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<(Parking Lamps):Turning the control to this
position turns on the parking lamps together
with the following:
Taillamps
Instrument Panel Lights
5(Headlamps):Turning the control to this
position turns on the headlamps together with the
previously listed lamps and lights.
Lamps on Reminder
If the driver’s door is opened and you turn the
ignition to OFF while leaving the lamps on, you will
hear a warning chime.
Daytime Running Lamps (DRL)
Daytime Running Lamps (DRL) can make it easier
for others to see the front of your vehicle during
the day. DRL can be helpful in many different
driving conditions, but they can be especially
helpful in the short periods after dawn and before
sunset. Fully functional daytime running lamps
are required on all vehicles rst sold in Canada.A light sensor on top of the instrument panel
makes the DRL work, so be sure it is not covered.
The DRL system will make your reduced
intensity low-beam headlamps come on in daylight
when the following conditions are met:
The ignition is on.
The exterior lamps control is in AUTO.
The shift lever is not in PARK (P).
When the DRL are on, only your reduced intensity
high-beam headlamps will be on. Your instrument
panel will not be lit up.
When it is dark enough outside, the exterior lamps
will come on automatically. When it is bright
enough outside, the exterior lamps will go out and
the DRL will turn on. Of course, you may still
turn on the headlamps any time you need to.
As with any vehicle, you should turn on the regular
headlamp system when you need it.
186

To clean the HUD, spray household glass cleaner
on a soft, clean cloth. Wipe the HUD lens gently,
then dry it. Do not spray cleaner directly on the lens
because the cleaner could leak into the unit.
If the ignition is on and you cannot see the HUD
image, check to see if one of the following
conditions exist:
The HUD unit is covered
The HUD dimmer knob is adjusted incorrectly
The HUD image is not adjusted to the
proper height
Ambient light in the direction your vehicle is
facing, is low
A fuse is blown. SeeFuses and Circuit
Breakers on page 463.
Keep in mind that the windshield is part of the
HUD. SeeWindshield Replacement on page 404.
Ultrasonic Rear Parking
Assist (URPA)
The Ultrasonic Rear Parking Assist (URPA)
system is designed to help you park, while the
vehicle is in REVERSE (R). It operates only at very
low speeds, less than 3 mph (5 km/h). URPA
can help make parking easier and to help
you avoid colliding with objects such as parked
vehicles. The URPA system can detect objects up
to 5 feet (1.5 m) behind the vehicle, and tell
you how close these objects are from your rear
bumper.
Your vehicle’s URPA operates when the shift lever
is moved into REVERSE (R) and the vehicle
speed is less than 3 mph (5 km/h). Four ultrasonic
sensors located at the rear bumper are used to
detect the distance to the object. The URPA
display is located inside the vehicle, near the rear
window. It has three color-coded lights used to
provide distance and system information to
the driver.
196

If an object is detected at a REVERSE (R) speed
of less than 3 mph (5 km/h), one of the following
will occur:
Description English Metric
amber light 5 ft 1.5 m
amber/amber lights 40 in 1.0 m
amber/amber/red lights &
continuous chime20 in 0.5 m
amber/amber/red lights
ashing & continuous
chime1 ft 0.3 m
A chime will sound the rst time an object is
detected between 20 inches (0.5 m) and 5 feet
(1.5 m) away.
URPA cannot detect objects that are above liftgate
level. In order for the rear sensors to recognize
an object, it must be within detection range behind
the vehicle.
When the System Does Not Seem to
Work Properly
The light may ash red when the vehicle is in
REVERSE (R) if the ultrasonic sensors are
not kept clean. So be sure to keep your rear
bumper free of mud, dirt, snow, ice, and slush.
Other conditions that may affect system
performance include things like the vibrations from
a jackhammer or the compression of air brakes
on a very large truck. If after cleaning the
rear bumper and then driving forward at least
15 mph (25 km/h), the display continues to ash
red, see your dealer.
If a trailer was attached to your vehicle, or a
bicycle or an object was on the back of, or hanging
out of your liftgate during your last drive cycle,
the light may also ash red. The light will continue
to ash whenever in REVERSE (R) until your
vehicle is driven forward at least 15 mph (25 km/h)
without any obstructions behind the vehicle.
For cleaning instructions, seeWashing Your
Vehicle on page 455.
198

Safety Belt Reminder Light
When the key is turned to ON or START, a chime
will come on for several seconds to remind
people to fasten their safety belts.
The safety belt light will
also come on and stay
on for several
seconds, then it will
ash for several more.
If the driver remains unbuckled when the ignition
is on and the vehicle is in motion, the chime
and the safety belt light will be repeated. You
should buckle your safety belt. If the driver’s belt
is already buckled, neither the chime nor the
light will come on.
Airbag Readiness Light
There is an airbag readiness light on the
instrument panel, which shows the airbag symbol.
The system checks the airbag’s electrical
system for malfunctions. The light tells you if there
is an electrical problem. The system check
includes the airbag sensor, the airbag modules,
the wiring, diagnostic module, and safety belt
pretensioners. For more information on the airbag
system, seeAirbag System on page 88. For
more information on safety belt pretensioners, see
Safety Belt Pretensioners on page 56.
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