Cadillac ATS Key Fob Programming
Updated 2026 2017–2019 3 model years
Programming steps, the battery it takes, and the exact replacement fob for every Cadillac ATS model year we cover (2017–2019). Find your year in the table, then jump to the details for that generation.
Every Cadillac ATS model year
| Year | Programming | Key fob | Battery |
|---|---|---|---|
| 2019 | Proximity Key · 4/5-button | CR2032 battery on Amazon | |
| 2018 | Proximity Key · 4/5-button | CR2032 battery on Amazon | |
| 2017 | Proximity Key · 4/5-button | CR2032 battery on Amazon |
2019 Cadillac ATS
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.
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.
Proximity Key
2 versionsStays in your pocket — the car unlocks and starts without inserting a key.
4/5-button Proximity Key
Find on Amazon- FCC ID
- HYQ2AB
- OE part #
- 13510253, 13510254, 13544033, 13544034, 13580791, 13580811 +10 more
- Frequency
- 315 MHz
- Chip
- PHILIPS ID 46
5-button Proximity Key
Find on Amazon- FCC ID
- HYQ2EB
- OE part #
- 13510236, 13510255, 13544042, 13544044, 13580793, 13594020 +5 more
- 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.
2018 Cadillac ATS
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.
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.
Proximity Key
3 versionsStays in your pocket — the car unlocks and starts without inserting a key.
4/5-button Proximity Key
Find on Amazon- FCC ID
- HYQ2AB
- OE part #
- 13510253, 13510254, 13544033, 13544034, 13580791, 13580811 +10 more
- Frequency
- 315 MHz
- Chip
- PHILIPS ID 46
5-button Proximity Key
Find on Amazon- FCC ID
- HYQ2EB
- OE part #
- 13510236, 13510255, 13544042, 13544044, 13580793, 13594020 +5 more
- Frequency
- 433 MHz
- Chip
- PHILIPS ID 46 GM EXT
4-button Proximity Key
Find on Amazon- FCC ID
- NBG009768T
- OE part #
- 22856929, 5931855
- Frequency
- 315 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.
2017 Cadillac ATS
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.
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.
Proximity Key
3 versionsStays in your pocket — the car unlocks and starts without inserting a key.
4/5-button Proximity Key
Find on Amazon- FCC ID
- HYQ2AB
- OE part #
- 13510253, 13510254, 13544033, 13544034, 13580791, 13580811 +10 more
- Frequency
- 315 MHz
- Chip
- PHILIPS ID 46
4-button Proximity Key
Find on Amazon- FCC ID
- NBG009768T
- OE part #
- 22856929, 5931855
- Frequency
- 315 MHz
- Chip
- PHILIPS ID 46
5-button Proximity Key
Find on Amazon- FCC ID
- HYQ2EB
- OE part #
- 13510255, 13544042, 13594020, 13598503, 13598538
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.
Cadillac ATS key fob battery
Your Cadillac ATS 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 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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