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Mazda B2300 Key Fob Programming

Updated 2026 2001–2009 8 model years

Programming steps, the battery it takes, and the exact replacement fob for every Mazda B2300 model year we cover (2001–2009). Find your year in the table, then jump to the details for that generation.

Shop Mazda B2300 key fobs on Amazon Match the FCC ID for your year (table below) before you buy.

Every Mazda B2300 model year

Key fob programming method, fob type and battery for each Mazda B2300 model year
Year Programming Key fob Battery
2009 — CR2032 battery on Amazon
2008 — CR2032 battery on Amazon
2007 — CR2032 battery on Amazon
2006 — CR2032 battery on Amazon
2004 — CR2032 battery on Amazon
2003 — CR2032 battery on Amazon
2002 — CR2032 battery on Amazon
2001 — CR2032 battery on Amazon

2001–2009 Mazda B2300

Remote / key fob programming

Programming a remote on this Ford resets every remote for the vehicle, so you reprogram them all together. There are two common methods — try Method A first, and if it doesn't work use Method B. Do not press the brake pedal at any point.

Full steps: Ford Remote Programming: Reset and Relearn Every Remote

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.

Mazda B2300 key fob battery

Most B2300 fobs use a CR2032 3V lithium coin cell. A fresh one typically lasts 3–5 years.

Buy Energizer CR2032 Lithium Coin Batteries (4-pack) on Amazon

How to replace the battery

  1. 1 Find the seam or small slot on the edge of the fob.
  2. 2 Twist a coin or small flathead screwdriver in the slot to split the case open.
  3. 3 Lift out the old coin cell and note which side faces up.
  4. 4 Fit the new battery the same way (printed + side usually faces the cover), then close the case until it clicks.
  5. 5 Press a button or test lock/unlock at the car to confirm it works.

Battery tips

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

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