Buick Lacrosse Key Fob Programming

Updated 2026 2005–2020 16 model years

Programming steps, the battery it takes, and the exact replacement fob for every Buick Lacrosse model year we cover (2005–2020). Find your year in the table, then jump to the details for that generation.

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

Every Buick Lacrosse model year

Key fob programming method, fob type and battery for each Buick Lacrosse model year
Year	Programming	Key fob	Battery
2020	GM Smart Key Programming for Push-Button Start	—	CR2032 battery on Amazon
2019	GM Smart Key Programming for Push-Button Start	Proximity Key · 5-button	CR2032 battery on Amazon
2018	GM Smart Key Programming for Push-Button Start	Proximity Key · 5-button	CR2032 battery on Amazon
2017	GM Smart Key Programming for Push-Button Start	Proximity Key · 5-button	CR2032 battery on Amazon
2016	GM Key and Transmitter Programming by Ignition Type	Remote Head Key · 4/5-button	CR2032 battery on Amazon
2015	GM Key and Transmitter Programming by Ignition Type	Remote Head Key · 4/5-button	CR2032 battery on Amazon
2014	GM Key and Transmitter Programming by Ignition Type	Remote Head Key · 4/5-button	CR2032 battery on Amazon
2013	GM Key and Transmitter Programming by Ignition Type	Remote Head Key · 4/5-button	CR2032 battery on Amazon
2012	GM Key and Transmitter Programming by Ignition Type	Remote Head Key · 4/5-button	CR2032 battery on Amazon
2011	GM Key and Transmitter Programming by Ignition Type	Remote Head Key · 4/5-button	CR2032 battery on Amazon
2010	GM Key and Transmitter Programming by Ignition Type	Remote Head Key · 4/5-button	CR2032 battery on Amazon
2009	Locksmith or dealer GM Transponder Key Programming With a Working Key	Remote, Transponder Key · 4/5/7-button	CR2032 battery on Amazon
2008	Locksmith or dealer GM Transponder Key Programming With a Working Key	Remote, Transponder Key · 4/5/7-button	CR2032 battery on Amazon
2007	Locksmith or dealer GM Transponder Key Programming With a Working Key	Remote, Transponder Key · 4/5/7-button	CR2032 battery on Amazon
2006	Locksmith or dealer GM Transponder Key Programming With a Working Key	Remote, Transponder Key · 4/5/7-button	CR2032 battery on Amazon
2005	Locksmith or dealer GM Transponder Key Programming With a Working Key	Remote, Transponder Key · 4/5/7-button	CR2032 battery on Amazon

2020 Buick Lacrosse

How to program your key fob

If your GM vehicle (Cadillac, Chevrolet, Buick) has push-button start, you can program smart keys yourself. Use Method A if you have two working smart keys; use Method B if you have one or none. Up to 8 smart keys — read the steps through first.

Full steps: GM Smart Key Programming for Push-Button Start

2017–2019 Buick Lacrosse

How to program your key fob

Full steps: GM Smart Key Programming for Push-Button Start

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.

5-button Proximity Key

Find on Amazon

FCC ID: HYQ4EA
OE part #: 13508414, 13532388, 5947337
Frequency: 433 MHz
Chip: PHILIPS ID 46 GM EXT

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.

2010–2016 Buick Lacrosse

How to program your key fob

This GM vehicle comes in two ignition types. On a regular key ignition you add a key with one working key. On push-button start you program transmitters — use the method matching whether you have a working transmitter.

Full steps: GM Key and Transmitter Programming by Ignition Type

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 Head Key

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

4/5-button Remote Head Key

Find on Amazon

FCC ID: AVL-B01T1AC, AVL-B01T2AC, KR55WK50073, OHT01060512, OHT05918179, P4O9MK74946931, V2T01060512, V2T01060514
OE part #: 13500221, 13500222, 13500224, 13500225, 13500226, 13500227 +60 more
Frequency: 315 MHz
Chip: PHILIPS ID 46

2005–2009 Buick Lacrosse

Remote / key fob programming

This vehicle's remotes can't be programmed without professional diagnostic tools — an automotive locksmith or dealer has to do it.

Order the correct replacement remote below (match the FCC ID on your current one), then have a locksmith or dealer program it. These vehicles hold up to 4 remotes, and any aftermarket alarm or remote-start must be disabled first.

Key programming

On this GM vehicle you can program a new transponder key yourself using a key that already starts the engine. It takes under a minute per key.

Full steps: GM Transponder Key Programming With a Working Key

Takes about under a minute per key

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

A separate key fob that only handles locking and unlocking.

4/5/7-button Remote

Find on Amazon

FCC ID: KOBGT04A, OUC60221, OUC60270
OE part #: 10305091, 15252034, 22733523, 22733524, 5927407, 5927408 +1 more
Frequency: 315 MHz

Transponder Key

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

Transponder Key

Find on Amazon

Key blank: B106NP
OE part #: B106, B109, GM-37, JMA-B106

Buick Lacrosse key fob battery

Your Buick Lacrosse 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 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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See what it actually costs, broken out by dealer, locksmith, and DIY:

Key fob programming cost Car key replacement cost