Infiniti M56 Key Fob Programming

Updated 2026 2011–2013 3 model years

The Infiniti M56 key fob has to be programmed by an automotive locksmith or dealer — there is no at-home procedure. Below is the exact replacement fob you need for each model year (FCC ID and part number), the battery it takes, and what programming costs.

Shop Infiniti M56 key fobs on Amazon Match the FCC ID for your year (table below) before you buy.

Every Infiniti M56 model year

Key fob programming method, fob type and battery for each Infiniti M56 model year
Year	Programming	Key fob	Battery
2013	Locksmith or dealer	Proximity Key · 4-button	CR2032 battery on Amazon
2012	Locksmith or dealer	Proximity Key · 4-button	CR2032 battery on Amazon
2011	Locksmith or dealer	Proximity Key · 4-button	CR2032 battery on Amazon

2011–2013 Infiniti M56

How to program your key fob

This remote 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 remote, so a replacement has to be set up by an automotive locksmith or a dealer.

Order the correct replacement remote 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.

Proximity Key

Stays in your pocket — the car unlocks and starts without inserting a key.

4-button Proximity Key

Find on Amazon

FCC ID: CWTWB1U787
OE part #: 285E3-1MP0A, 285E3-1MP0B, 285E3-1MP0D
Frequency: 433 MHz
Chip: PHILIPS ID 46

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.

Infiniti M56 key fob battery

Your Infiniti M56 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 Amazon

How to replace the battery

1 Slide the release latch and pull the metal emergency key out of the fob.
2 Use that key (or a coin) to pry the two halves apart at the seam.
3 Lift out the old coin cell — note which side faces up.
4 Drop in the new battery the same way (printed + side usually faces the back cover).
5 Press the case back together until it clicks, then test lock/unlock and push-to-start.

Battery tips

Use a fresh, name-brand 3V lithium cell — bargain cells drain quickly.
Even with a dead fob battery you can usually still start the car by holding the fob against the start button — check your owner's manual.
If the fob still won'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:

Key fob programming cost Car key replacement cost