Mercury Cougar Key Fob Programming
Updated 2026 1999–2002 4 model years
Programming steps, the battery it takes, and the exact replacement fob for every Mercury Cougar model year we cover (1999–2002). Find your year in the table, then jump to the details for that generation.
Every Mercury Cougar model year
| Year | Programming | Key fob | Battery |
|---|---|---|---|
| 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 | |
| 1999 | Remote · 3/4-button | CR2032 battery on Amazon |
1999–2002 Mercury Cougar
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
You can add a new key to this Ford-built vehicle yourself if you already have two original keys that start the engine. The new key must be cut first, and it has to be a genuine key — a cloned hardware-store key won't work.
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
- CWTWB1U322, CWTWB1U331, CWTWB1U345, CWTWBIU322, CWTWBIU331, CWTWBIU345, GQ43VT11T, OUC6000022, OUCD6000022
- OE part #
- 15K60153309140, 15K601535093529138, 2L3T-15K601-AA, 2L3T-15K601-AB, 2L3Z-15K601-AB, 2S4T-15K601-AA +13 more
- Frequency
- 315 MHz
- Chip
- 4D63 80-BIT
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.
Mercury Cougar key fob battery
Your Mercury Cougar 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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