The fuel filter on a 2005 Hyundai Santa Fe must be changed every five years or 50,000 miles. The Santa Fe's fuel filter is mounted to a frame rail on the vehicle body, near the fuel tank at the left front corner. Removing the fuel tank itself is a very simple process, but proceed with caution, as you are dealing with a fuel system that is under high pressure.
Open the gas cap, remove the vehicle's rear seat cushion and remove the service cover for the fuel pump. Disconnect the fuel pump's electrical connector.
Start the engine and let it run until it stops, relieving the fuel pressure. Reconnect the fuel pump electrical connector and install the access cover and seat cushion.
Disconnect the vehicle's negative battery cable.
Raise the rear end of the Santa Fe and support it on jack stands.
Unscrew and remove the fitting nuts on the fuel lines with a wrench and disconnect the fuel lines.
Remove the securing bolt for the fuel filter's mounting strap and remove the fuel filter.
Install the replacement fuel filter on the frame rail and bolt the strap in place.
Connect the fuel lines to the fuel filter using new washers. Tighten the lines' fitting nuts to between 22 and 29 foot pounds, with a torque wrench if possible.
Lower the car off the jack stands and reconnect the battery cable to the negative terminal.