Losing or damaging your car key fob can be a major inconvenience. For 2005 Toyota Prius owners, the good news is that replacing and programming a new key fob can often be done at home, saving you time and money compared to dealership services. This guide provides a straightforward, step-by-step process to program a new key fob for your 2005 Toyota Prius, allowing you to regain full access and control of your vehicle.
This guide is specifically designed for 2005 Toyota Prius models and is applicable if you have an original, working key fob with a black logo. It’s crucial to verify that your original key fob has a black logo on the back, not chrome, as this procedure is tailored for that specific type. If your original key fob has a chrome logo, this programming method may not be compatible. Also, if your original key is not functioning, dealer programming will be necessary.
The programming process is divided into two key steps: first, programming the fob to start and stop the engine, and second, programming the keyless entry function. Let’s begin with the engine start/stop programming.
Programming the Start/Stop Engine Function
This initial step will synchronize your new key fob with your 2005 Toyota Prius to enable the engine start/stop functionality when the fob is inserted into the key port.
- Enter your 2005 Toyota Prius, ensuring all doors are fully closed and unlocked. Verify that the car is completely turned off.
- Take your existing, working key fob (the one currently functioning with your car) and insert it into the key slot. Immediately remove it. Repeat this insert and remove action four times consecutively. On the fifth insertion, leave the working key fob inserted into the slot.
- Open and then close the driver’s side door a total of six times.
- Remove the original, working key fob from the slot. At this point, your Toyota Prius should be in key fob programming mode. You can confirm this by observing the red anti-theft light on the dashboard, which should remain illuminated.
- Take your new, unprogrammed key fob and insert it into the key slot. Leave the new fob in the slot for a full minute. Closely monitor the blinking red anti-theft light on your dashboard. Wait until the red anti-theft light stops flashing and turns off completely. This indicates that your new key fob has been successfully programmed for the start/stop engine function.
- Remove the new key fob from the slot. The programming for the START/STOP engine function is now complete.
Programming the Keyless Entry Function
After successfully programming the start/stop engine function, proceed with these steps to program the keyless entry function of your new key fob. This will enable remote locking and unlocking of your 2005 Toyota Prius doors.
This procedure, detailed in steps 1 through 13, is specifically for black logo key fobs and Toyota Prius vehicles without Smart Key System (SKS) functionality.
- Ensure the driver’s side door is open, no key fob is inserted in the slot, and all doors are unlocked.
- Take your original, working key fob and insert it into the key slot. Remove it twice within a 5-second timeframe. Quickly insert and remove it two times.
- Close and then open the driver’s side door twice.
- Insert the original, working key fob into the slot once and immediately remove it.
- Close and open the driver’s side door twice again.
- Insert the original, working key fob into the slot and leave it there. Close the driver’s side door.
- Without pressing the brake pedal, press the power button on your Toyota Prius. Wait for approximately one second, press the power button again, wait another second, and then press the power button a third time to turn the car back off. This should be done with the original key fob still inserted and the driver door closed.
- Remove the original, working key fob from the slot. Your vehicle should now be in “add mode” for key fob programming.
- The car should automatically lock and then unlock the doors twice in rapid succession. This is a verification signal, confirming that your 2005 Toyota Prius has successfully entered the key fob “add mode”.
- Take your new key fob. Press and hold both the lock and unlock buttons on the new fob simultaneously for about one and a half seconds.
- Within 3 seconds after releasing both buttons, press only the lock button on the new key fob.
- Observe the car’s response. Your 2005 Toyota Prius should respond with one quick lock and unlock cycle to indicate successful programming of the new key fob’s keyless entry function. If the car responds with two lock/unlock cycles, it means the programming was unsuccessful. In this case, carefully repeat the steps. It’s also possible that the new key fob is faulty, or there may be too many key fobs already programmed to your vehicle’s system.
- To finalize and exit the programming mode, either open and then close the driver’s door, or insert any key fob into the key slot.
By following these detailed steps, you should be able to successfully program a new key fob for your 2005 Toyota Prius. Ensure you carefully follow each step and pay attention to the car’s responses to confirm successful programming. If you encounter difficulties or the programming is unsuccessful after multiple attempts, it’s recommended to consult a professional locksmith or your local Toyota dealership for assistance.
