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The 2003 Hyundai Elantra OBD 2 port is on lower edge of dash between steering column & hood release
The 2005 Hyundai Elantra OBD 2 port is on lower left dash between steering column & hood release
The 2004 Hyundai Elantra OBD 2 port is on lower edge of dash between steering column & hood release
The 2005 Hyundai Elantra OBD 2 port is on lower left dash between steering column & hood release
The 1996 Hyundai Accent OBD 2 port is on lower edge of dash next to kick panel
The 2000 Hyundai Accent OBD 2 port is on rear of lower edge of dash; right of hood release
The 2005 Hyundai Accdent OBD 2 port is on lower left dash next to driver side kick panel
In the fuse box
The OBD port is under the dash on the driver side.
The 2004 Hyundai Tiburon OBD 2 port is behind fuse box door, left above hood release
The 1997 Hyundai Accent OBD 2 port is on lower edge of dash next to kick panel
If this options enabled it can occur on 20 or 40 kph. Can be enabled by using OBD code scanner