Hyundai 2009 Sonata, Owner'S Manual

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VEHICLE DATA COLLECTION AND EVENT DATA RECORDERS
Your Hyundai vehicle is equipped with many high technology, electronically controlled systems
that help to ensure your vehicle operates properly and provides the performance that you
expect. These systems utilize computers to monitor the operation of various systems and
components and help to control their operation. These computerized system operations are
wide-ranging and involve components to reduce emissions, to continuously evaluate the
readiness of the airbag and seat belt pretensioner systems, to determine when the airbag and
seat belt pre-tensioner systems should be deployed and then to activate the deployment, and
if equipped, to operate anti-lock braking, traction control and electronic stability control to assist
the driver to control the vehicle in difficult driving situations. These systems electronically store
information that is useful to service technicians when they need to diagnose and repair these
systems. Additional information is stored only when a crash occurs that results in the
deployment of the airbags or seat belt pre-tensioners. This type of data storage is done by
devices called event data recorders(EDR).
After a crash event, the airbag and seat belt pre-tensioner computer system, known as the
Supplemental Restraint System Control Module (SRSCM) or Airbag Control Unit (ACU), may
record some information about the condition of the vehicle and how it was being operated. This
information consists of data related to seat belt usage and if there was diagnostic information
in the airbag or seat belt systems at the time that a crash occurred, and if the ACU sensed that
a crash of sufficient severity occurred to require seat belt pre-tensioner or airbag deployment.
To retrieve this information, special equipment is needed and access to the vehicle or the device
that stores the data is required. Hyundai will not access information about a crash event or share
it with others except:
o in response to an official request of police or similar government office, or
o with the consent of the vehicle owner or, if the vehicle is leased, with the consent of the lessee,
or
o as part of Hyundai’s defense of litigation, or
o as required by law.