The speed sensor is a timy magnetic reed switch located inside the speedometer cluster in the dash. The reed switch is magnetically triggered by a magnet that spins in the speedometer cable.
If the VSS is defective replace the instrument cluster.
I believe it is a input speed sensor. Hyundai calls them pulse generators on the 99 elantra.
just bought one at autozone for $65. Was about the same price as an input speed sensor and looks very similar.
Vehicle speed sensor
The VSS sensor is located on the transaxle
The VSS:Vehicle Speed Sensor is located on the transaxle
If the VSS is defective replace the instrument cluster.
If the VSS is defective replace the instrument cluster. Only on 2001 and later Elantra's have speed sensor on transaxle
The 2005 Hyundai Elantra has a 5-speed manual.
The 2003 Hyundai Elantra has a 5-speed manual.
The 2002 Hyundai Elantra has a 5-speed manual.
The 2010 Hyundai Elantra has a 5-speed manual.