Acura RLX HYBRID 2019 Service Manual

uuSeat Belts uAbout Your Seat Belts
40
Safe DrivingThe front seats are equipped with automatic
seat belt tensioners to enhance safety.
The tensioners automatically tighten the front
seat belts during a moderate-to-severe frontal
collision, sometimes even if the collision is not
severe enough to inflate the front airbags or
the driver’s knee airbag.
Are the motor-powered pretensioners that
start to retract the front seat belts when the
CMBS
TM, brake assist system, or VSA ® system
is in operation. They may also activate when
you steer the vehicle hard, or the vehicle is
impacted. After being retracted, the seat belts
are slackened to thei r original positions.
As convenience features , the e-pretensioners
slightly retract the seat belts when you latch
the seat belt buckle, depress the brake pedal
more aggressively than you normally do, or
make a sharp turn, and fully retract when you
release the seat belt buckle.
■Automatic Seat Belt Tensioners1 Automatic Seat Belt Tensioners
The seat belt tensioners can only operate once.
If a tensioner is activated, the SRS indicator will come
on. Have a dealer replace the tensioner and
thoroughly inspect the seat belt system as it may not
offer protection in a subsequent crash.
During a moderate-to-severe side impact, the
tensioner on that side of the vehicle also activates.
■Seat Belt e-pretensioners1Seat Belt e-pretensioners
If only the e-pretensione rs were activated, no
components need to be replaced.
The e-pretensioners may not work if:
•Supplemental Restraint System Indicator is on.•Vehicle Stability Assist ® (VSA ®) System Indicator is
on.
•A warning message for e- pretensioners appears on
the multi-information display.
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41
uuSeat Belts uFastening a Seat Belt
Continued
Safe Driving
Fastening a Seat Belt
After adjusting a front seat to the proper position, and while sitting upright and well
back in the seat:
2 Adjusting the Seats P. 175
1.Pull the seat belt out slowly.
2. Insert the latch plate into the buckle, then
tug on the belt to make sure the buckle is
secure.
u Make sure that the belt is not twisted or
caught on anything.
When you or the front passenger insert the
latch plate into the buckle, the front seat
belt retracts automatically.
2 Seat Belt e-pretensioners P. 40
1Fastening a Seat Belt
No one should sit in a seat with an inoperative seat
belt or one that does not appear to be working
correctly. Using a seat be lt that is not working
properly may not protect the occupant in a crash.
Have a dealer check the belt as soon as possible.
Never insert any foreign obj ects into the buckle or
retractor mechanism.
Pull out slowly.
Correct
Seated
Posture.
Latch
Plate
Buckle
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uuSeat Belts uFastening a Seat Belt
42
Safe Driving
3. Position the lap part of the belt as low as
possible across your hips, then pull up on
the shoulder part of the belt so the lap part
fits snugly. This lets your strong pelvic
bones take the force of a crash and reduces
the chance of internal injuries.
4. If necessary, pull up on the belt again to
remove any slack, then check that the belt
rests across the center of your chest and
over your shoulder. Th is spreads the forces
of a crash over the strongest bones in your
upper body.
The front seats have adjustable shoulder anchors to accommodate taller and shorter
occupants. 1.Move the anchor up and down while
holding the release button.
2. Position the anchor so that the belt rests
across the center of your chest and over
your shoulder.1Fastening a Seat Belt
To release the belt, push the red PRESS button and
then guide the belt by hand until it has retracted
completely.
When exiting the vehicle, be sure the belt is properly
stowed so that it will not get caught in the closing
door.
3WARNING
Improperly positioning the seat belts can
cause serious injury or death in a crash.
Make sure all seat belts are properly
positioned before driving.Lap belt
as low as
possible
■Adjusting the Shoulder Anchor1 Adjusting the Shoulder Anchor
The shoulder anchor height can be adjusted to four
levels. If the belt contacts your neck, lower the height
one level at a time.
After an adjustment, make sure that the shoulder
anchor position is secure.
Push
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43
uuSeat Belts uFastening a Seat Belt
Safe DrivingIf you are pregnant, the best way to prot ect yourself and your unborn child when
driving or riding in a vehicle is to always wear a seat belt and keep the lap part of the
belt as low as possible across the hips.
■Advice for Pregnant Women1 Advice for Pregnant Women
Each time you have a checkup, ask your doctor if it is
okay for you to drive.
To reduce the risk of inju ries to both you and your
unborn child that can be caus ed by an inflating front
airbag:
•When driving, sit upright a nd adjust the seat as far
back as possible while allowing full control of the
vehicle.
•When sitting in the front passenger’s seat, adjust
the seat as far back as possible.
Wear the shoulder belt
across the chest avoiding
the abdomen.
Wear the lap part of the
belt as low as possible
across the hips.
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44
uuSeat Belts uSeat Belt Inspection
Safe Driving
Seat Belt Inspection
Regularly check the condition of your seat belts as follows:
• Pull each belt out fully, and look for frays, cuts, burns, and wear.
• Check that the latch plates and buckles work smoothly and the belts retract
easily.
u If a belt does not retract eas ily, cleaning the belt may correct the problem. Only
use a mild soap and warm water. Do not use bleach or cleaning solvents. Make
sure the belt is completely dry before allowing it to retract.
Any belt that is not in good condition or working properly will not provide proper
protection and should be repl aced as soon as possible.
A belt that has been worn during a cr ash may not provide the same level of
protection in a subsequent crash. Have your seat belts inspected by a dealer after
any collision.1 Seat Belt Inspection
3WARNING
Not checking or maintaining seat belts can
result in serious injury or death if the seat
belts do not work properly when needed.
Check your seat belts regularly and have
any problem corrected as soon as possible.
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45Continued
Safe Driving
Airbags
Airbag System Components
9
13
7
9
9
91110986
9
12
6
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46
uuAirbags uAirbag System Components
Safe Driving
The front, driver’s knee, front side, and side
curtain airbags are deployed according to
the direction and severity of impact. Both
side curtain airbags are deployed in a
rollover. The airbag system includes:
aTwo SRS (Supplemental Restraint System)
front airbags. The driver’s airbag is stored
in the center of the steering wheel; the
front passenger’s airbag is stored in the
dashboard. Both are marked SRS
AIRBAG.
bDriver’s knee airbag. The knee airbag is
stored under the steering column. It is
marked SRS AIRBAG.
cTwo side airbags, one for the driver and
one for a front passenger. The airbags are
stored in the outer edges of the seat-
backs. Both are marked SIDE AIRBAG .
dTwo side curtain airbags, one for each
side of the vehicle. The airbags are stored
in the ceiling, above the side windows.
The front and rear pillars are marked
SIDE CURTAIN AIRBAG.
eAn electronic control unit that, when the
vehicle is on, continually monitors
information about the various impact
sensors, seat and buckle sensors, rollover
sensor, airbag activators, seat belt
tensioners, and other vehicle
information. During a crash event the
unit can record such information.
fAutomatic front seat belt tensioners. In
addition, the driver’s and front
passenger’s seat belt buckles incorporate
sensors that detect whether or not the
belts are fastened.
The front seat belt tensioners also include
the e-pretensioners.
gA driver’s seat position sensor. This
sensor determines the optimal force at
which the airbag will deploy in a crash.
hWeight sensors in the front passenger’s
seat. The front passenger’s airbag will be
turned off if the weight on the seat is
approximately 65 lbs (29 kg) or less (the
weight of an infant or small child).
iImpact sensors that can detect a
moderate-to-severe front or side impact.
jAn indicator on the dashboard that alerts
you that the front passenger’s front
airbag has been turned off.
kAn indicator on the instrument panel that
alerts you to a possible problem with your
airbag system or seat belt tensioners.
lSafing Sensor
mA rollover sensor that can detect if your
vehicle is about to roll over and signal the
control unit to deploy both side curtain
airbags.
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47
uuAirbags uAirbag System Components
Safe DrivingAirbags can pose serious hazards. To do their job, airbags must inflate with
tremendous force. So, while airbags help sa ve lives, they can cause burns, bruises,
and other minor injuries, sometimes even fatal ones if occupants are not wearing
their seat belts properl y and sitting correctly.
What you should do: Always wear your seat belt properly, and sit upright and as
far back from the steering wheel as possi ble while allowing full control of the
vehicle. A front passenger should move their seat as far back from the dashboard as
possible.
Remember, however, that no safety system ca n prevent all injuries or deaths that
can occur in a severe crash, even when s eat belts are properly worn and the airbags
deploy.
Do not place hard or sharp objects between yourself and a front airbag.
Carrying hard or sharp objects on your lap, or driving with a pipe or other sharp
object in your mouth, can result in in juries if your front airbag inflates.
Do not attach or place objects on the front and driver’s knee airbag covers.
Objects on the covers marked SRS AIRBAG could interfere with the proper
operation of the airbags or be propelled inside the vehicle and hurt someone if the
airbags inflate.
■Important Facts About Your Airbags1 Important Facts About Your Airbags
Do not attempt to deactivate your airbags. Together,
airbags and seat belts pr ovide the best protection.
When driving, keep hands and arms out of the
deployment path of the fro nt airbag by holding each
side of the steering wheel. Do not cross an arm over
the airbag cover.
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48
uuAirbags uTypes of Airbags
Safe Driving
Types of Airbags
Your vehicle is equipped with four types of airbags:
• Front airbags: Airbags in front of the driver ’s and front passenger’s seats.
• Driver’s knee airbag: Airbag under the steering column.
• Side airbags: Airbags in the driver’s and front passenger’s seat-backs.
• Side curtain airbags: Airbags above the side windows.
Each is discussed in the following pages.
Front Airbags (SRS)
The front SRS airbags inflate in a moderate-to -severe frontal collision to help protect
the head and chest of the driver and/or front passenger.
SRS (Supplemental Restraint System) indicates that the airbags are designed to
supplement seat belts, not replace them. Seat belts are the occupant’s primary
restraint system.
The front airbags are housed in the center of the steering wheel for the driver, and
in the dashboard for the front pass enger. Both airbags are marked SRS AIRBAG.
■Housing Locations
1Types of Airbags
The airbags can inflate whenever the power mode is
in ON.
After an airbag inflates in a crash, you may see a
small amount of smoke. This is from the combustion
process of the infl ator material and is not harmful.
People with respiratory pr oblems may experience
some temporary discomfort. If this occurs, get out of
the vehicle as soon as it is safe to do so.
1 Front Airbags (SRS)
During a frontal crash severe enough to cause one or
both front airbags to deploy, the airbags can inflate
at different rates, dependi ng on the severity of the
crash, whether or not the se at belts are latched, and/
or other factors. Frontal airbags are designed to
supplement the seat belts to help reduce the
likelihood of head and chest injuries in frontal
crashes.
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Continued49
uuAirbags uFront Airbags (SRS)
Safe DrivingFront airbags are designed to inflate duri ng moderate-to-severe frontal collisions.
When the vehicle decelerates suddenly, the sensors send information to the control
unit which signals one or both front airbags to inflate.
A frontal collision can be either head-on or angled between two vehicles, or when a
vehicle crashes into a stationary object, such as a concrete wall.
While your seat belt restrains your torso, the
front airbag provides supplemental protection
for your head and chest.
The front airbags deflate immediately so that
they won’t interfere with the driver’s visibility
or the ability to steer or operate other
controls.
The total time for inflation and deflation is so fast that most occupants are not
aware that the airbags deployed until th ey see them lying in front of them.
■Operation
■How the Front Airbags Work1How the Front Airbags Work
Although the driver’s and fr ont passenger’s airbags
normally inflate within a spli t second of each other, it
is possible for only one airbag to deploy. This can
happen if the severity of a collision is at the margin,
or threshold that determines whether or not the
airbags will deploy. In such cases, the seat belt will
provide sufficient protec tion, and the supplemental
protection offered by the airbag would be minimal.
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