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http://www.myhyundaiforums.com/05-01-010.pdf
DESCRIPTION:
In certain situations, the Occupant Classification
System (OCS) installed in the right front seat of a 2004
or 2005 Elantra may misclassify a Child Restraint Seat
(CRS) as an adult. This may occur if the CRS is
installed after an adult has been seated in the right front
seat, if there has not been a key ON - key OFF cycle
with the right front passenger seat empty prior to installation
of the CRS.
This bulletin provides the procedures to use the OCS
reprogramming tool to reprogram the vehicle’s OCS
Electronic Control Unit (ECU) to remove the feature
that may cause the CRS to be recognized as an adult.
VEHICLES AFFECTED:
• Model: 2004-2005 ELANTRA vehicles
• Affected vehicle production date range:
June 12, 2003 through September 9, 2005
TOOLS REQUIRED:
One initial OCS reprogramming tool will be provided
to your dealership free of charge to perform this service.
Replacement tools will be available mid
November, 2005, through your facing Parts Distribution
Center (PDC) at a cost of $299.00