Elantra GLS Sedan L4-2.0L (1999)
Dimmer Switch: Service and Repair
1. Disconnect the battery negative terminal.
2. Pull out the rheostat assembly using a flat blade screwdriver.
3. Disconnect the connector from the center facia panel.
4. Remove the rheostat assembly.
5. Check for intensity of lamp load. If the light intensity of the lamps changes smoothly without any flickering when the rheostat is turned, it can be
assumed that the rheostat is normal.