HelloAuto Toyota Prius Replacement Key Fob 2004-2009 Silver Logo — Assembled Keyless Remote with Transponder & Battery

This HelloAuto replacement key fob is a fully assembled keyless-entry remote built to replace Toyota Prius 2004–2009 smart keys (P/N 2584A-B31EG, 89994-47061) with the SILVER logo.

If your original Prius remote is lost, damaged, or worn, this HelloAuto key fob offers a like-for-like replacement that includes the transponder chip, internal electronics, and battery so it’s ready for professional programming and immediate use. It transmits at 312MHz and matches the exact part numbers used on compatible Prius models. Note: this product is manufactured specifically for the silver-logo version of the key and will not work with other logo variants.

Will this replace my Prius key right away?

The HelloAuto fob is a precise physical replacement and arrives fully assembled with the chip and battery, but it does not support DIY self-programming. To activate vehicle functions you’ll need a qualified locksmith or Toyota dealer to program the remote to your car. Programming is straightforward for professionals and typically low cost.

• Includes internal transponder chip and battery—no parts missing.
• Compatible with FCC ID MOZB31EG; frequency 312MHz.
• Requires professional programming (locksmith or dealer).
• Only fits Toyota Prius keys that use the silver logo design.

How does the HelloAuto key compare to the original Toyota remote?

This replacement is manufactured to match the original form, button layout, and electronic function for eligible Prius years. Each unit undergoes quality checks to ensure signal strength and button responsiveness closely mirror factory remotes. It’s intended as a direct swap for worn or lost remotes when the part numbers match.

• Matched part numbers: 2584A-B31EG and 89994-47061.
• Same button layout and housing dimensions as OEM silver-logo keys.
• Tested for signal strength and electronic integrity before shipping.
• Complete key—no soldering or component transfer required.

What should I check before buying?

Confirm your original key shows the silver logo and matches either P/N 2584A-B31EG or 89994-47061. Verify your vehicle’s model year is within the supported range (2004–2009). If you’re unsure about programming options, contact a local locksmith or dealer in advance so you know the steps after receiving the fob.

• Check your current key’s logo color—must be silver.
• Match printed part numbers or FCC ID where possible.
• Plan for professional programming—self-programming not available.
• Confirm vehicle year: Toyota Prius 2004 through 2009.

What customer support and warranty does HelloAuto provide?

HelloAuto includes 6+1 months of support for every key fob sold, so help is available if you encounter issues. Support can assist with questions about compatibility and troubleshooting, but cannot perform vehicle programming remotely. Reach out to HelloAuto customer service for guidance if something doesn’t look right on arrival.

• 6+1 months of post-sale support from HelloAuto.
• Assistance with compatibility and basic troubleshooting.
• Customer service available via message for prompt help.
• No remote vehicle programming—support is advisory only.

Who is this for: drivers of Toyota Prius model years 2004–2009 who need a full, ready-to-program replacement remote that mirrors the original silver-logo smart key. Choose this HelloAuto fob if your OEM remote is broken, lost, or unreliable and you want a complete, inspected unit that professionals can program to your vehicle.