Toyota MR2 Spyder Key Fob Programming
Updated 2026 2000–2004 5 model years
Programming steps, the battery it takes, and the exact replacement fob for every Toyota MR2 Spyder model year we cover (2000–2004). Find your year in the table, then jump to the details for that generation.
Every Toyota MR2 Spyder model year
| Year | Programming | Key fob | Battery |
|---|---|---|---|
| 2004 |
| Remote · 3/4-button | CR2032 battery on Amazon |
| 2003 |
| Remote · 3/4-button | CR2032 battery on Amazon |
| 2002 |
| Remote · 3/4-button | CR2032 battery on Amazon |
| 2001 |
| Remote · 3/4-button | CR2032 battery on Amazon |
| 2000 |
| Remote · 3/4-button | CR2032 battery on Amazon |
2000–2004 Toyota MR2 Spyder
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
Key programming
This key fob can't be programmed with a do-it-yourself procedure. The vehicle needs a diagnostic tool connected to its OBD port to pair a new fob, so a replacement has to be set up by an automotive locksmith or a dealer.
Order the correct replacement fob below — match the FCC ID on your current fob first — then have a local automotive locksmith or the dealer program it to your vehicle.
Replacement key fob
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
A separate key fob that only handles locking and unlocking.
3/4-button Remote
Find on Amazon- FCC ID
- BAB237131-056
- OE part #
- 08191-00871, 08191-00920, 08191-00921, 08191-00922, PT398-07101
- Frequency
- 315 MHz
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.
Toyota MR2 Spyder key fob battery
Your Toyota MR2 Spyder key fob uses a CR2032 3V lithium coin cell. A fresh one typically lasts 3–5 years.
Buy Energizer CR2032 Lithium Coin Batteries (4-pack) on AmazonHow to replace the battery
- 1 Find the seam or small slot on the edge of the remote.
- 2 Twist a coin or small flathead in the slot to split the case open.
- 3 Remove the old coin cell and note the + side.
- 4 Fit the new battery with the + side matching, then close the case.
- 5 Press a button to confirm the LED lights, then test at the car.
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 remote still doesn't work after a new battery, it may need re-syncing or programming.
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Rather hire a pro?
See what it actually costs, broken out by dealer, locksmith, and DIY: