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In the 2004 Hyundai Santa Fe, the alarm system control module is conveniently located in the engine compartment. To access it, start by popping the hood in front of your vehicle. You'll spot a long, black fuse box up front in the engine bay. Just behind it, you'll find the control module snugly placed next to the hood release switch. If the module is acting up, you may notice issues like the alarm going off unexpectedly, the remote key fob not working correctly, and the alarm sounding whenever you try to use the key in a physical lock. If there are signs of malfunction, you'll likely need to have the module replaced.
The control module for the alarm system in a 2004 Hyundai Santa Fe can be found positioned below and to the rear of the fuse box near the hood release lever.
The alarm or security system module can be found below the dashboard behind the fuse box, not in the engine area. Typically, the module is either functioning correctly or not at all, with intermittent issues being uncommon unless caused by voltage issues due to a faulty battery or charging system.