Taking apart a Subaru key fob is often the first step to replacing a dead battery, repairing water damage, or troubleshooting a faulty button. While the process seems straightforward, the device is a tightly packed circuit board and battery case designed to resist accidental opening. With a little patience and the right technique, you can safely disassemble the fob without causing cracks or damaging the delicate internal components.
Understanding Your Subaru Key Fob
Before you begin, it helps to understand what you are dealing with. Most Subaru models utilize a compact remote key fob that integrates the circuit board, buttons, and battery into a slim housing. The case is usually held together by small plastic clips and a tight battery seal. Inside, you will find a printed circuit board (PCB) connected to a rubber button pad that translates your keystrokes into signals sent to the car. Knowing the layout helps you avoid pulling on wires or stressing the connections during disassembly.
Tools You Will Need
You do not need a professional toolkit to open a Subaru key fob, but having the right tools makes the job cleaner and safer. The primary requirement is a small, precise screwdriver, often referred to as a pentalobe or torx driver, depending on the model year. A flathead screwdriver or a sturdy coin can also work to pry the case open. Additionally, a soft cloth or towel on your workspace will prevent the tiny fob from sliding around or getting scratched during the process.
Recommended Tool Kit
Small Phillips or Torx screwdriver
Flathead screwdriver or plastic prying tool
CR2032 battery (for replacement)
Clean microfiber cloth
Anti-static mat (optional but helpful)
Step-by-Step Disassembly Process
The actual process of how to take apart a Subaru key fob begins with locating the seam on the side of the device. Typically, there is a small indentation or a visible line where the front cover meets the back cover. Insert your screwdriver or prying tool into this gap and apply gentle pressure. The goal is to release the internal clips without forcing the plastic, which can crack if rushed.
Handling the Internal Components
Once the case opens, you will see the battery secured with a metal tab or a small screw. Before touching anything else, carefully remove this battery to disconnect the power. With the power off, you can then gently lift the circuit board. Be mindful of the thin wire connecting the board to the battery cover; do not pull the wire, only lift the board by its edges to avoid breaking the connection.
Troubleshooting Common Issues
During the disassembly, you might encounter resistance or discover that the plastic clips are brittle. If a clip feels like it will break, stop and adjust your angle of approach rather than forcing it. Sometimes, dirt or debris lodged in the seam prevents the fob from opening smoothly; cleaning the edges with compressed air can solve this. If a button feels sticky after reassembly, the issue is usually with the rubber pad alignment, which you can correct by carefully repositioning it before screwing the case back together.
Reassembly and Testing
After completing the necessary repairs or cleaning, reassembling the fob is the reverse of taking it apart. Place the circuit board back in position, ensuring the ribbon cable is not pinched. Align the button pad correctly so that the buttons respond accurately to your presses. Snap the two halves of the shell together until you hear a uniform click, indicating that all clips have engaged. Finally, insert the battery and test the remote against the car to confirm that the signal is strong and consistent.
