How to program the keyless entry remote transmitters and Key Fob on Mercury Mountaineer?

Programming keyless entry remote transmitters requires that both the anti-theft system and key code programming need to be off before beginning the process. Enter the door and activate the driver door lock control switch by pressing Unlock button. The process for successful entry into program mode starts by turning the key from Off to On eight times within 10 seconds ending in the eighth On position. When the programming mode is activated successfully, the doors will automatically lock and unlock. After pressing any button on a remote transmitter the doors will first become locked then unlocked to verify that the programming process was completed successfully. The vehicle security module can accept only four transmitters during programming and these transmitters must be programmed within 20 seconds of each other. A few seconds of waiting should follow when remote transmitter signals fail to unlock the doors. Check the Locks, Latches and Entry Systems for either Late Build or Early Build when remote transmission to a key fails to get a response. The programming completion checks include door operations and key Off action, timing beyond 20 seconds since entry and reaching four remote transmitter programming limits.

How to program the remote keyless entry (RKE) transmitters and Key Fob on Mercury Monterey?

All remote keyless entry transmitters must be programmed at the same time during the setup process. Start the programming by using the RKE system or the RKE keypad (if available) or door lock control switch with the driver door still open. A successful program entry requires users to switch the key from OFF to RUN eight times in 10 seconds before ending in RUN mode; this transition will verify program entry through door locking followed by unlocking actions. Press any button on each RKE transmitter within the 20 seconds time frame to test the successful programming as the doors will simultaneously lock and unlock. Press the button a second time after letting a few seconds elapse when the door locks fail to respond. Before proceeding confirm that the programming became unsuccessful due to a maximum allowed number of RKE transmitters. The procedure for exiting programming mode happens when the key switches to the OFF setting or after 20 seconds from entering programming mode or when programming the maximum number of transmitters.

OEM Mercury Key Fob

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Mercury Transmitter Part Number: 8L3Z-15K601-B
$65.53 MSRP: $75.00
You Save: $9.47 (13%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Remote Control System; Keyless Entry Transmitter; Transceiver
- Replaces: 2L3Z-15K601-AB, 8L3Z-15K601-AA
Fits the following Mercury Models:
- Mariner | 2005-2008 | Base, Convenience, DX, Ford Hybrid, Hybrid, Limited, Luxury, LX, Mercury Convenience, Mercury Hybrid, Mercury Luxury, Mercury Premier, Premier, XL, XLS, XLT | 2.3L L4, 3.0L V6, 4 Cyl 2.3 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 2.3 L GAS, 6 Cyl 3.0 L GAS
- Monterey | 2004-2007 | Base, Convenience, Limited, Luxury, Mercury Convenience, Mercury Luxury, Mercury Premier, Premier, SE, SEL, SES | 3.9L V6, 4.2L V6, 6 Cyl 4.2 L GAS
- Mountaineer | 1998-2001 | Base | 6 Cyl 4.0 L GAS, 8 Cyl 5.0 L GAS
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Mercury Remote Control Part Number: 8S4Z-15K601-A
$62.61 MSRP: $75.00
You Save: $12.39 (17%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Remote Control System; Keyless Entry Transmitter; Transmitter; Transceiver
- Manufacturer Note: 4 Buttons
- Replaces: 2S4Z-15K601-AB
Fits the following Mercury Models:
- Grand Marquis | 2006-2011 | GS, LS | 4.6L V8, 8 Cyl 4.6 L FLEX, 8 Cyl 4.6 L GAS
- Montego | 2005-2007 | Luxury, Premier | 6 Cyl 3.0 L GAS
- Mountaineer | 2002-2010 | Base, Convenience, Luxury, Premier | 6 Cyl 4.0 L FLEX, 6 Cyl 4.0 L GAS, 8 Cyl 4.6 L GAS
- Sable | 1998-2005 | GS, LS, LS Premium, Platinum Edition | 6 Cyl 3.0 L FLEX, 6 Cyl 3.0 L GAS
- Tracer | 1998-1999 | GS, LS, Trio | 4 Cyl 2.0 L GAS
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Mercury Transceiver Part Number: 3W7Z-15K601-AA
$62.61 MSRP: $75.00
You Save: $12.39 (17%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Remote Control System; Keyless Entry Transmitter
- Replaces: F8AZ-15K601-AA
Fits the following Mercury Models:
- Grand Marquis | 1995-2005 | GS, GSL, Limited Edition, LS, LSE, Ultimate Edition | 4.6L V8, 8 Cyl 4.6 L GAS
- Marauder | 2003-2004 | Base | 8 Cyl 4.6 L GAS
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Mercury Transmitter Part Number: 1F5Z-15K601-AA
$28.85 MSRP: $39.26
You Save: $10.41 (27%)
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Product Specifications
- Other Name: Remote Control System
- Manufacturer Note: 3-button (lock, unlock, and panic), use with XF5Z15K602BA receiver, With production remote keyless entry
Fits the following Mercury Models:
- Villager | 1999-2002 | Base, Estate, Sport | 6 Cyl 3.3 L GAS
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Mercury Transmitter Part Number: F8DZ-15K601-GA
$31.34 MSRP: $42.64
You Save: $11.30 (27%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Remote Control System
Fits the following Mercury Models:
- Mariner | 2005-2007 | Base, Convenience, Hybrid, Luxury, Premier | 4 Cyl 2.3 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 2.3 L GAS, 6 Cyl 3.0 L GAS
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Mercury Transmitter Part Number: 3F2Z-15K601-AA
$38.59 MSRP: $52.51
You Save: $13.92 (27%)
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Product Specifications
- Other Name: Remote Control System
Fits the following Mercury Models:
- Monterey | 2004-2007 | Base, Convenience, Luxury, Premier | 6 Cyl 4.2 L GAS
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Mercury Transmitter Part Number: F87Z-15K601-AA
Product Specifications
- Other Name: Remote Control System
- Replaces: F81Z-15604-AA
Fits the following Mercury Models:
- Tracer | 1998-1999 | GS, LS, Trio | 4 Cyl 2.0 L GAS
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Mercury Receiver Part Number: F6XZ-15K601-AC
Product Specifications
- Other Name: Remote Control System
- Manufacturer Note: Type 4-(words) lock, unlock, panic
Fits the following Mercury Models:
- Villager | 1996-1998 | GS, LS, Nautica | 6 Cyl 3.0 L GAS
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Mercury Transmitter Part Number: F6UZ-15K601-AB
Product Specifications
- Other Name: Remote Control System
- Replaces: F6UZ-15K601-CA
Fits the following Mercury Models:
- Mountaineer | 1997 | Base | 8 Cyl 5.0 L GAS
- Tracer | 1997 | GS, LS, Trio | 4 Cyl 2.0 L GAS
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Mercury Transmitter Part Number: F5DZ-15K601-B
Product Specifications
- Other Name: Remote Control System
- Manufacturer Note: Type 3-(words) lock, unlock, panic, trunk
- Replaces: F7CZ-15K601-BA
Fits the following Mercury Models:
- Sable | 1996-1997 | G, GS, LS | 6 Cyl 3.0 L GAS
- Tracer | 1997-1998 | GS, LS, Trio | 2.0L L4, 4 Cyl 2.0 L GAS
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Mercury Transmitter Part Number: F6UZ-15K601-BB
Product Specifications
- Other Name: Remote Control System
Fits the following Mercury Models:
- Mountaineer | 1997 | Base | 8 Cyl 5.0 L GAS
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Mercury Transmitter Part Number: 4F2Z-15K601-AA
Product Specifications
- Other Name: Remote Control System
- Manufacturer Note: 6 Buttons
Fits the following Mercury Models:
- Monterey | 2004-2007 | Base, Convenience, Luxury, Premier | 6 Cyl 4.2 L GAS

Mercury Key Fob

If you own Mercury and want to keep it in top shape, choosing OEM Key Fob is a smart move. They are precisely engineered and follow strict factory standards. They are made in advanced facilities that use cutting edge technology. Each part goes through thorough testing to confirm strength and safety, so you can trust it. FordPartsDeal.com gives you genuine Mercury Key Fob at some of the affordable online prices without cutting quality. Every OEM Mercury part includes the manufacturer's warranty, easy returns, and super-fast delivery. So why wait? Shop now and get your vehicle back to peak condition.

The pocket-sized Mercury Key Fob unlocks your car or commands a key system. Mercury was born in 1938 and a year later, they were selling cars. It established itself as a niche vehicle maker by mixing sharp styling with an insular ride. Cars give a calmer vibe while in transit. The name inspired by the Roman messenger has a good ring to it and gives shoppers speed and style without the price. Automobile cabins were found spacious, and suspension tuning was done to driver preference while road noises were drowned out. This shows value was put on comfort as well as performance. Consumer interest in cars like Cougar and Grand Marquis remained high. Periodic updates in materials and basic technology kept these cars in tune with changing tastes of consumers. For several decades, the brand balanced feel and value until production hit pause in 2011. Inside every modern Mercury vehicle, this handheld Key Fob connects through a rolling encrypted radio code that flips at each press to block signal thieves. It either locks or unlocks the doors, sounds a panic horn, or pops the trunk from about 60 feet. Although an added feature, the auto start is still safe as it checks for the chip. The unit is powered by a coin battery that lasts three to four years and can be replaced in seconds. Programming can easily match the fob to any Mercury model. As a result, pressing the fob talks only to its intended ride. The Key Fob is small and strong, fitting in pockets, withstanding drops, and making manual keys look old. The more you use the Key Fob, the more it feels normal, allowing Mercury owners to enjoy the drive.

Mercury Key Fob Parts and Q&A

Remote Control
8S4Z-15K601-A
Q: How to program the keyless entry remote transmitters and Key Fob on Mercury Mountaineer?
A:
Programming keyless entry remote transmitters requires that both the anti-theft system and key code programming need to be off before beginning the process. Enter the door and activate the driver door lock control switch by pressing Unlock button. The process for successful entry into program mode starts by turning the key from Off to On eight times within 10 seconds ending in the eighth On position. When the programming mode is activated successfully, the doors will automatically lock and unlock. After pressing any button on a remote transmitter the doors will first become locked then unlocked to verify that the programming process was completed successfully. The vehicle security module can accept only four transmitters during programming and these transmitters must be programmed within 20 seconds of each other. A few seconds of waiting should follow when remote transmitter signals fail to unlock the doors. Check the Locks, Latches and Entry Systems for either Late Build or Early Build when remote transmission to a key fails to get a response. The programming completion checks include door operations and key Off action, timing beyond 20 seconds since entry and reaching four remote transmitter programming limits.
Transmitter
8L3Z-15K601-B
Q: How to program the remote keyless entry (RKE) transmitters and Key Fob on Mercury Monterey?
A:
All remote keyless entry transmitters must be programmed at the same time during the setup process. Start the programming by using the RKE system or the RKE keypad (if available) or door lock control switch with the driver door still open. A successful program entry requires users to switch the key from OFF to RUN eight times in 10 seconds before ending in RUN mode; this transition will verify program entry through door locking followed by unlocking actions. Press any button on each RKE transmitter within the 20 seconds time frame to test the successful programming as the doors will simultaneously lock and unlock. Press the button a second time after letting a few seconds elapse when the door locks fail to respond. Before proceeding confirm that the programming became unsuccessful due to a maximum allowed number of RKE transmitters. The procedure for exiting programming mode happens when the key switches to the OFF setting or after 20 seconds from entering programming mode or when programming the maximum number of transmitters.