Modules JAGUAR XF 2009 1.G Owners Manual

11
Introduction

DATA RECORDING
Service data recording
Service data recorders in your vehicle are
capable of collecting and storing diagnostic
information about your vehicle. This potentially
includes information about the performance or
status of various syst ems and modules in the
vehicle such as engine, throttle, steering or
brakes.
In order to properly di agnose and service your
vehicle, Jaguar service and repair facilities may
access vehicle diagnos tic information through
a direct connection to your vehicle.
Event data recording
This vehicle is equipped with an Event Data
Recorder (EDR). The main purpose of an EDR
is to record, in certain crash or near crash-like
situations, such as an air bag deployment or
hitting a road obstacle, data that will assist in
understanding how a vehicle’s systems
performed. The EDR is de signed to record data
related to vehicle dynamics and safety systems
for a short period of ti me, typically 30 seconds
or less. The EDR in this vehicle is designed to
record such data as:
• How various systems in your vehicle were
operating.
• Whether or not the driver and passenger
safety belts were buckled/fastened.
• How far (if at all) the driver was depressing
the accelerator and/or the brake pedal.
• How fast the vehicle was travelling.
• The rotational position of the steering
wheel.
These data can help provide a better
understanding of the ci rcumstances in which
crashes and injuries occur. Note:
EDR data are recorded by your vehicle
only if a non-trivial cr ash situation occurs; no
data are recorded by the EDR under normal
driving conditions and no personal data (e.g.
name, gender, age and crash location) are
recorded. However, other parties, such as law
enforcement, could combine the EDR data with
the type of personally id entifying data routinely
acquired during a cr ash investigation.
To read data recorded by an EDR, special
equipment is required, and access to the
vehicle or the EDR is needed. In addition to the
vehicle manufacturer, other parties, such as
law enforcement, that have the special
equipment, can read the information if they
have access to the vehicle or the EDR.
DISABILITY MODIFICATIONS
Occupants with disabili ties which may require
modification of the ve hicle, must contact a
Dealer/Authorised Re pairer before any
modifications are made.

53
Supplementary restraints system

PRINCIPLE OF OPERATION
Introduction
In the event of a collision, the airbag control
unit monitors the rate of deceleration caused
by the collision. This information is then used
to determine whether airbags should be
deployed.
Airbag deployment is de pendent on the rate at
which the passenger compartment changes
velocity following the collision. The
circumstances affecting different collisions
(vehicle speed, angle of impact, type and size
of object hit, etc.), vary considerably and will
affect the rate of de celeration accordingly.
The Supplementary Restraint System (SRS)
components include:-
• SRS warning indicator.
• Rotary coupler.
• Airbag modules.
• Seat belt pre-te nsioners (front seat belts).
• Restraints control module.
• Crash sensors.
• Airbag wiring harnesses. The SRS is not designed to
operate as a result
of:
• Rear impacts.
• Minor front impacts.
• Minor side impacts.
• Heavy braking.
• Driving over bumps and pot holes.
Therefore, it follows that considerable
superficial damage to the vehicle can occur,
without causing the airbags to deploy.

Status after a collision
252

When driving
When driving a vehicle which has been
involved in a collision use caution and pay extra
attention to the operation of the vehicle. If any
changes in vehicle operation after the collision
are noted when compared to it's operation
before the collision, do not continue to drive
the vehicle. Stop the vehi cle as soon as it is
safe to do so, and have the vehicle recovered.
Pay particular attent ion to changes in:-
• Steering.
• Braking.
• Unusual noises.
• Warning lights or messages displayed.
• Problems with electrical systems.
INSPECTING SAFETY SYSTEM
COMPONENTS
Following a collision the seat belt and
Supplementary Restrain t System components
should be inspected for damage and/or
deformity. The inspection and any subsequent
repair work should only be carried out by a
Dealer/Authorised Repair er, or other suitably
qualified personnel.
Components which require inspection
include:-
• Seat belt webbing and mechanisms.
• Seat belt pre-tensioners.
• Airbag covers and modules.
• Seat frames a nd mounting points.
• Child seats.
• Child seat anchor points.
• Pedestrian prot ection system.
Note: This list is not exhaustive.
In addition to the physical items checked, the
electronic control system and its associated
wiring should also be checked thoroughly. This
process will include a diagnostic check which
can only be carried out by a Dealer/Authorised
repairer or suitably qualified and equipped
persons.
WARNING
It is not recommended that the
vehicle be driven or used until all of
the occupant protection systems
have been checked.