2017 Alfa Romeo 4C sensor

WARNING!
•The seat belt assembly must be replaced if the
switchable Automatic Locking Retractor (ALR)
feature or any other seat belt function is not
working properly when checked according to the
procedures in the Service Manual.
• Failure to replace the seat belt assembly could
increase the risk of injury in collisions.
• Do not use the Automatic Locking Mode to re-
strain occupants who are wearing the seat belt or
children who are using booster seats. The locked
mode is only used to install rear-facing or
forward-facing child restraints that have a har-
ness for restraining the child.
Supplemental Restraint System (SRS)
Some of the safety features described in this section
may be standard equipment on some models, or may be
optional equipment on others. If you are not sure, ask
your authorized dealer.
The air bag system must be ready to protect you in a
collision. The Occupant Restraint Controller (ORC) monitors the internal circuits and interconnecting wir-
ing associated with the electrical Air Bag System Com-
ponents. Your vehicle may be equipped with the fol-
lowing Air Bag System Components:
Air Bag System Components
Your vehicle may be equipped with the following air
bag system components:
•
Occupant Restraint Controller (ORC)
• Air Bag Warning Light
•Instrument Panel
• Knee Impact Bolsters
• Driver and Front Passenger Air Bags
• Supplemental Side Air Bags
• Supplemental Knee Air Bags
• Front and Side Impact Sensors
• Seat Belt Pretensioners
• Seat Track Position Sensors
• Seat Belt Buckle Switch
34 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

WARNING!(Continued)
extending your arms to reach the steering wheel
or instrument panel.
• Never place a rear-facing child restraint in front of
an air bag. A deploying passenger front air bag
can cause death or serious injury to a child 12
years or younger, including a child in a rear-
facing child restraint.
• Only use a rear-facing child restraint in a vehicle
with a rear seat.
Driver and Passenger Front Air Bag Features
The Advanced Front Air Bag system has multistage
driver and front passenger air bags. This system pro-
vides output appropriate to the severity and type of
collision as determined by the Occupant Restraint Con-
troller (ORC), which may receive information from the
front impact sensors (if equipped) or other system
components.
The first stage inflator is triggered immediately during
an impact that requires air bag deployment. A low
energy output is used in less severe collisions. A higher
energy output is used for more severe collisions. This vehicle may be equipped with a driver and/or
front passenger seat belt buckle switch that detects
whether the driver or front passenger seat belt is
buckled. The seat belt buckle switch may adjust the
inflation rate of the Advanced Front Air Bags.
This vehicle may be equipped with driver and/or front
passenger seat track position sensors that may adjust
the inflation rate of the Advanced Front Air Bags based
upon seat position.
WARNING!
•
No objects should be placed over or near the air
bag on the instrument panel or steering wheel
because any such objects could cause harm if the
vehicle is in a collision severe enough to cause the
air bag to inflate.
• Do not put anything on or around the air bag
covers or attempt to open them manually. You
may damage the air bags and you could be
injured because the air bags may no longer be
functional. The protective covers for the air bag
cushions are designed to open only when the air
bags are inflating.
(Continued)
2
THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 37

WARNING!(Continued)
•Relying on the air bags alone could lead to more
severe injuries in a collision. The air bags work
with your seat belt to restrain you properly. In
some collisions, air bags won’t deploy at all.
Always wear your seat belts even though you
have air bags.
Front Air Bag Operation
Front Air Bags are designed to provide additional
protection by supplementing the seat belts. Front air
bags are not expected to reduce the risk of injury in rear,
side, or rollover collisions. The front air bags will not
deploy in all frontal collisions, including some that may
produce substantial vehicle damage — for example,
some pole collisions, truck underrides, and angle offset
collisions.
On the other hand, depending on the type and location
of impact, front air bags may deploy in crashes with
little vehicle front-end damage but that produce a
severe initial deceleration. Because air bag sensors measure vehicle deceleration
over time, vehicle speed and damage by themselves are
not good indicators of whether or not an air bag should
have deployed.
Seat belts are necessary for your protection in all
collisions, and also are needed to help keep you in
position, away from an inflating air bag.
When the ORC detects a collision requiring the front air
bags, it signals the inflator units. A large quantity of
non-toxic gas is generated to inflate the front air bags.
The steering wheel hub trim cover and the upper right
side of the instrument panel separate and fold out of the
way as the air bags inflate to their full size. The front air
bags fully inflate in less time than it takes to blink your
eyes. The front air bags then quickly deflate while
helping to restrain the driver and front passenger.
Knee Impact Bolsters
The Knee Impact Bolsters help protect the knees of the
driver and front passenger, and position the front
occupants for improved interaction with the front air
bags.
38 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

WARNING!
•Do not drill, cut, or tamper with the knee impact
bolsters in any way.
• Do not mount any accessories to the knee impact
bolsters such as alarm lights, stereos, citizen band
radios, etc.
Supplemental Driver Knee Air Bag
This vehicle is equipped with a Supplemental Driver
Knee Air Bag mounted in the instrument panel below
the steering column. The Supplemental Driver Knee Air
Bag provides enhanced protection during a frontal
impact by working together with the seat belts, preten-
sioners, and front air bags.
Supplemental Door-Integrated Side Air Bag
Inflatable Curtains (SABICs)
This vehicle is equipped with Supplemental Door-
Integrated Side Air Bag Inflatable Curtains (SABICs).
SABICs may help reduce the risk of head and other
injuries to front seat outboard occupants in certain side
impacts, in addition to the injury reduction potential
provided by the seat belts and body structure. The SABICs are located in the door trim below the side
windows. The trim covering the SABICs is labeled “SRS
AIRBAG” or “AIRBAG.”
The SABICs may help reduce the risk of partial or
complete ejection of vehicle occupants through side
windows in certain side impact events.
The SABICs deploy upward, covering the side win-
dows. An inflating SABIC pushes the outside edge of
the trim out of the way and covers the window. The
SABICs inflate with enough force to injure occupants if
they are not belted and seated properly, or if items are
positioned in the area where the SABICs inflate. Chil-
dren are at an even greater risk of injury from a
deploying air bag.
SABICs are designed to activate in certain side impacts.
The Occupant Restraint Controller (ORC) determines
whether the deployment of the SABIC in a particular
impact event is appropriate, based on the severity and
type of collision. The side impact sensors aid the ORC in
determining the appropriate response to impact events.
The system is calibrated to deploy the SABIC on the
impact side of the vehicle during impacts that require
SABIC occupant protection. In side impacts, the SABICs
deploy independently; a left side impact deploys the
2
THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 39

WARNING!(Continued)
some collisions, SABICs won’t deploy at all. Al-
ways wear your seat belt even though you have
SABICs.
NOTE: Air bag covers may not be obvious to you, but
they will open during air bag deployment.
The SABICs may help reduce the risk of partial or
complete ejection of vehicle occupants through side
windows in certain side impact events.
The Occupant Restraint Controller (ORC) monitors the
internal circuits and interconnecting wiring associated
with electrical Air Bag System Components listed be-
low:
Air Bag System Components
• Occupant Restraint Controller (ORC)
• Air Bag Warning Light
•Steering Wheel and Column
• Instrument Panel
• Knee Impact Bolsters •
Driver and Front Passenger Air Bags
• Supplemental Side Air Bags
• Supplemental Knee Air Bags
• Front and Side Impact Sensors
• Seat Belt Pretensioners
• Seat Track Position Sensors
• Seat Belt Buckle Switch
If A Deployment Occurs
The front air bags are designed to deflate immediately
after deployment.
NOTE: Front and/or side air bags will not deploy in all
collisions. This does not mean something is wrong with
the air bag system.
If you do have a collision which deploys the air bags,
any or all of the following may occur:
• The air bag material may sometimes cause abrasions
and/or skin reddening to the occupants as the air
bags deploy and unfold. The abrasions are similar to
friction rope burns or those you might get sliding
along a carpet or gymnasium floor. They are not
2
THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 41

TILT/TELESCOPING STEERING COLUMN . . .76
 ELECTRONIC SPEED CONTROL —
IF EQUIPPED .........................77
▫ To Activate ..........................77
▫ To Set A Desired Speed .................78
▫ To Deactivate ........................78
▫ To Resume Speed .....................78
▫ To Vary The Speed Setting ...............78
▫ To Accelerate For Passing ...............79
 PARKING SENSORS — IF EQUIPPED .......80
▫ Activation/Deactivation .................80
▫ Acoustic Signal .......................80 ▫
Indications On Display — If Equipped ......81
▫ Fault Indication .......................81
▫ General Warnings .....................82
 POWER OUTLETS .....................83
 CIGAR LIGHTER AND ASH RECEIVER —
IF EQUIPPED .........................85
 CUPHOLDER .........................85
 STORAGE ............................86
▫ Seatback Storage ......................86
▫ Console Features ......................86
▫ Rear Compartment Storage ..............87
62 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

PARKING SENSORS — IF EQUIPPED
They are located in the rear bumper and their function
is to detect the presence of any obstacles near the rear
part of the vehicle; they consequently inform the driver,
through an intermittent acoustic signal.
Activation/Deactivation
The sensors are automatically activated when reverse
gear is engaged. As the obstacle behind the vehicle gets
closer, the acoustic signal becomes more frequent.
Acoustic Signal
When reverse gear is engaged and there is an obstacle
behind the vehicle, an acoustic signal is emitted which
varies according to the distance of the bumper from the
obstacle.
The frequency of the acoustic signal:
•Increases as the distance between vehicle and ob-
stacle decreases, culminating in a continuous acous-
tic signal when the distance is less than approxi-
mately 12 in (30 cm).
• Decreases if the distance from the obstacle increases,
until the signal ceases entirely.
• Remains constant if the distance between vehicle and
obstacle remains unchanged; if this situation con-
cerns the side sensors, the signal will stop after
approximately 3 seconds, for example, in the event of
manoeuvres along a wall.
If several obstacles are detected by the sensors, only the
nearest one is considered.
Parking Sensors
80 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

Indications On Display — If Equipped
When the sensors are activated, the screen appears on
the instrument cluster display.
Obstacle presence and distance information is therefore
provided both by the acoustic signal and the instrument
cluster display.
The system indicates a detected obstacle by displaying
an arc in one or more positions according to the distance
of the obstacle and its position in relation to the vehicle.If an obstacle is detected in the rear central area, the
instrument cluster display shows all the arcs in the rear
central area, up to the one that corresponds to the
position of the obstacle itself.
The signal is similar for obstacles in the rear left or right
area.
The arc that corresponds to the position of the obstacle
will flash.
The color on the instrument cluster display depends on
the distance from and position of the obstacle.
The vehicle is close to the obstacle when the instrument
cluster display shows a single constant arc and emits a
continuous sound.
If there are several obstacles, the closest one is indi-
cated.
Fault Indication
Parking sensor failures, if any, will be indicated when
reverse is engaged by the switching on of the
warn-
ing light in the instrument cluster display.
Parking Sensors Screen
3
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 81