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5. EVENT DATA RECORDER (EDR)
The event data recorder (EDR) stores the driving information data in a crash or near crash event, when
the acceleration sensor in the air bag unit detects a sharp acceleration change which meets the EDR
operating conditions, regardless of the air bag deployment The air bag unit always stores the driving
information data and updates the data with new one periodically. If a collision is detected by front and
side impact sensors, the acceleration sensor in the SDM detects the change in acceleration. The air bag
unit stores the information on internal acceleration sensor, driving status and air bag deployment at this
time.
The EDR stores the driving information also when the acceleration sensor in the air bag unit detects
a sharp acceleration change in the event of a rear-end collision or side collision for a vehicle without
an air bag
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The front part of the active head restraint is separated and moved forward to protect the occupant's neck
in the event of a rear-end collision.
The active head restraints may be installed to both driver and passenger seats depending on the vehicle
specifications.
(1) System configuration
Active head restraint sensor
Active head restraint
(passenger seat)
Active head restraint
(driver seat)
2) Active Head Restraint
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(3) Operating process
Driver seat
Passenger seat
For a vehicle with an active head restraint system, an active head restraint sensor is installed and its G
sensor is operated in the event of a rear-end collision. As the G sensor in the active head restraint
sensor is operated, the power is supplied to the driver's or passenger's active head restraint. Then, the
lock in the head restraint is disengaged and the front part of the head restraint is separated and moved
toward the neck of an occupant.
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Front impact
sensor mounting
Front end upper panel
Headlamp
aiming holeFront bumper bracket
Front bumper
bracket
Headlamp
bracket
Front bumper
- The appearance of the front bumper has been changed.
- The front end upper panel has been newly applied.
Front end upper member
The front bumper bracket has been newly applied.
Headlamp member
- Aiming hole has been added because of the changed
headlamp
- The install location of front impact sensor has been
changed.
- The appearances of the front bumper bracket and
headlamp bracket have been changed.