The Hyundai Santa Fe uses an alternator to run electrical devices in your vehicle while the engine is running. A voltage regulator maintains a constant voltage level and is frequently integrated into the alternator assembly. If your battery continually runs down or your headlights become dimmer while the engine is running, you may need to replace the alternator.
Determine which alternator your Hyundai Santa Fe will need. You'll want to be sure the new alternator is compatible with your Santa Fe's engine. Models made from 2001 to 2006 can have a 2.7 L Delta or 3.5 L Sigma engines. Models made after 2006 have a 2.7 L or 3.3 L engine.
Disconnect the negative battery cable with a socket wrench so you do not short out the alternator when you remove it. Remove the accessory drive belt and disconnect the electrical harnesses from the alternator.
Remove the mounting bolts on the alternator with a socket wrench and take the alternator off the vehicle. The upper bolt is the adjuster and the lower nut and bolt is the pivot.
Install the new alternator assembly and tighten the upper mounting bolt with a torque wrench to between 9 and 11 foot pounds. Torque the lower nut and bolt to between 15 and 18 foot pounds. Connect the wiring harnesses to the alternator.
Replace the accessory drive belt and restore it to the proper tension. Reconnect the negative battery cable with a socket wrench.
