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Scion TC Key Fob Programming

Updated 2026 2005 1 model year

Programming steps, the battery it takes, and the exact replacement fob for every Scion TC model year we cover (2005). Find your year in the table, then jump to the details for that generation.

Shop Scion TC key fobs on Amazon Match the FCC ID for your year (table below) before you buy.

Every Scion TC model year

Key fob programming method, fob type and battery for each Scion TC model year
Year Programming Key fob Battery
2005 Remote Head Key, Transponder Key · 3-button CR2025 battery on Amazon

2005 Scion TC

Remote / key fob programming

You can program Toyota remotes yourself with a sequence of door and ignition movements. Have every remote with you. Try the main procedure first; if the locks don't cycle, use the alternate.

Full steps: Toyota Remote Programming With a Door and Ignition Sequence

Replacement key fobs

Find your key type below, then match the FCC ID printed on the back of your existing fob — or, for a plain transponder key, the blank code — to be sure of the right part.

Remote Head Key

One piece: a cut metal blade with the lock/unlock buttons built into the head.

2005 Scion TC 3-button Remote Head Key, FCC ID M0ZB41TG
3-button Remote Head Key
Find on Amazon
FCC ID
M0ZB41TG, MOZB41TG
OE part #
89070-21050, 89070-21111, 89070-21120, 89070-52850, 89070-52860, 89070-53730
Frequency
315 MHz
Chip
TEXAS ID 4D 67 DOT CHIP

Transponder Key

2 versions

A cut metal key with a chip in the head. No buttons.

2005 Scion TC Transponder Key, key blank TR47-P
Transponder Key
Find on Amazon
Key blank
TR47-P
OE part #
TR47-P
2005 Scion TC Transponder Key, key blank TOY44DPT
Transponder Key
Find on Amazon
Key blank
TOY44DPT
OE part #
5910834, 89785-08020
Chip
4D-67 DOT

Photos show the OEM part for each number listed. Aftermarket replacements sold online are often slightly different in appearance — the FCC ID, not the shape, is what determines whether a fob will work with your car.

Scion TC key fob battery

Your Scion TC key fob uses a CR2025 3V lithium coin cell. A fresh one typically lasts 3–5 years.

Buy Energizer CR2025 Lithium Coin Batteries (4-pack) on Amazon

How to replace the battery

  1. 1 Look for a small notch or screw on the side of the fob where the key blade meets the buttons.
  2. 2 Pry the housing apart with a coin or small flathead (or remove the screw).
  3. 3 Pop out the old coin cell, noting its orientation.
  4. 4 Insert the new battery the same way up, then snap the case shut.
  5. 5 Test the buttons — if they work, you're done.

Battery tips

  • Use a fresh, name-brand 3V lithium cell — bargain cells drain quickly.
  • Try not to touch both faces of the new battery; skin oils shorten its life.
  • If the buttons still don't respond after a new battery, the remote may need re-syncing or programming.

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