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How do I repair a Toyota key fob?

My mom is flying in to visit me. Before I have to pick her up at the airport, I wanted to go buy some flowers to give her. I headed out the door and pressed the unlock button on my car key fob, but it didn’t work. I tried changing the battery, but that didn’t fix the issue either. How can I fix a Toyota key fob?

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Phoebe Mah · Updated on
Reviewed by Shannon Martin, Licensed Insurance Agent.
That’s very sweet of you to buy flowers for your mom! Generally, when a key fob is not working, the battery is the problem. Since replacing it didn’t work, the issue is likely more complicated.
To repair a Toyota key fob, start by disassembling the remote and looking for potential internal damage. Here’s how:
  • Step 1: Take apart the fob. To do so, locate the small metal button above the physical key on your fob. Press the button to take out the physical key. Insert a flathead screwdriver into the slot where the physical key used to be. Then, gently pry open the fob.
  • Step 2: Look for a green circuit board. Take it out of the fob case very carefully and set it aside.
  • Step 3: Make sure the battery is the right type and was installed correctly. Note that there is a chance the new battery is faulty.
  • Step 4: Look for any misaligned buttons and make adjustments if necessary. Also, look for broken internal pieces of the fob.
  • Step 4: Try using the remote again after reassembling it.
Keep in mind if your fob isn’t working—or you spotted broken pieces inside the remote—this could be an electrical issue with the circuit board or another issue you can’t repair yourself.
Conversely, your vehicle could have forgotten your fob. If so, you need to reprogram the remote. If you don’t know how, take it to a Toyota service technician for help.
In some cases, replacing the car remote is cheaper than repairing it. So weigh the cost of repair versus replacement before making a decision.
To offset the price of fixing your key fob, save money on car insurance by downloading the
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Jerry partners with more than 50 insurance companies, but our content is independently researched, written, and fact-checked by our team of editors and agents. We aren’t paid for reviews or other content.

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