Ford & Lincoln Proximity Keys

Shop Ford and Lincoln proximity keys at Noble Key Supply. This collection includes smart keys for compatible cars, trucks, SUVs, crossovers, and commercial vehicles equipped with passive-entry and push-button-start systems.

Choose from Paladin and other aftermarket replacements, new OEM keys, refurbished OEM keys, and recased OEM options. Available products include multiple FCC IDs, frequencies, button layouts, batteries, and one-way or two-way remote systems.

Because Ford and Lincoln vehicles can use visually similar keys with different internal electronics, verify every product specification before ordering or programming.

Ford Proximity Keys

Ford proximity keys combine remote functions, immobilizer authorization, passive entry, and push-button starting in one electronic key.

Depending on the vehicle and key design, supported Ford applications may include select versions of the:

• Ford Bronco
• Ford Edge
• Ford Escape
• Ford Expedition
• Ford Explorer
• Ford F-150
• Ford Fusion
• Ford Maverick
• Ford Mustang
• Ford Ranger
• Ford Transit
• Ford Transit Connect

Application coverage varies by model year, trim, production date, and factory security system. Two vehicles with the same model name may require keys with different FCC IDs, frequencies, or button functions.

Lincoln Proximity Keys

This collection also includes proximity keys for compatible Lincoln luxury cars, crossovers, and SUVs.

Available applications may include select versions of the:

• Lincoln Aviator
• Lincoln Continental
• Lincoln Corsair
• Lincoln MKC
• Lincoln MKS
• Lincoln MKT
• Lincoln MKX
• Lincoln MKZ
• Lincoln Nautilus
• Lincoln Navigator

Ford and Lincoln proximity keys sometimes share related electronic platforms, but they should not be considered interchangeable without complete compatibility verification.

Check the FCC ID, frequency, manufacturer part number, button arrangement, and listed vehicle fitment before selecting a Lincoln smart key.

Ford and Lincoln Smart Keys

A proximity key communicates with the vehicle without requiring the driver to insert a blade into the ignition. When the correctly programmed key is present, the vehicle may allow passive door entry and push-button starting.

Depending on the application, a complete smart key may provide:

• Door locking
• Door unlocking
• Panic alarm
• Trunk release
• Power liftgate control
• Remote start
• Tailgate release
• Passive entry
• Push-button starting
• Emergency mechanical access
• Two-way remote confirmation

Not every key includes every function. Match the replacement key’s buttons and electronic specifications with the vehicle’s original equipment.

Match the FCC ID

The FCC ID is one of the most important identifiers for a Ford or Lincoln proximity key. It helps distinguish keys that may have nearly identical housings but use different transmitters or communication protocols.

FCC IDs represented in this collection may include:

• M3N-5WY8609
• M3N-A2C31243300
• M3N-A2C31243800
• M3N-A2C931423
• M3N-A2C93142300
• M3N-A2C931426
• M3N-A2C93142600
• M3N-A3C054339
• M3N-A3C108397
• KR55WK48801

Compare the complete FCC ID rather than relying on a partial number. Small differences in the identifier can represent a different frequency, vehicle platform, or key system.

If the original key is unavailable, use trusted vehicle-specific application data and confirm programmer coverage before ordering.

Verify the Operating Frequency

Ford and Lincoln proximity keys in this collection may operate at different frequencies, including:

• 315 MHz
• 434 MHz
• 902 MHz

Frequency must correspond with the vehicle’s receiver and security system. Keys transmitting at different frequencies are not interchangeable, even if their cases, blades, and button layouts appear identical.

Frequency can change according to:

• Vehicle model
• Model year
• Production date
• Trim level
• Regional market
• One-way or two-way system
• Factory remote-start equipment
• Vehicle security platform

Always confirm the exact frequency shown in the product listing.

315 MHz Ford and Lincoln Proximity Keys

Many Ford and Lincoln smart-key applications use 315 MHz transmitters. Available 315 MHz configurations may include three-, four-, and five-button keys.

Examples of FCC IDs used by 315 MHz keys in this collection include:

• M3N-5WY8609
• M3N-A2C931423
• M3N-A2C93142300
• M3N-A2C31243800

A 315 MHz designation confirms only one part of compatibility. The FCC ID, part number, button layout, emergency blade, and vehicle application must also match.

434 MHz Proximity Keys

Select newer Ford proximity keys operate at 434 MHz. Current product options may include smart keys for compatible Ford F-150, Ford Explorer, and other supported applications.

FCC IDs associated with available 434 MHz products may include:

• M3N-A3C108397
• KR55WK48801

Some 434 MHz keys may feature motion-sensing technology or newer electronic designs. Verify whether the replacement must support a specific generation of vehicle security features.

Do not substitute a 315 MHz or 902 MHz key for an application requiring 434 MHz.

902 MHz Ford and Lincoln Smart Keys

This collection includes a wide selection of 902 MHz proximity keys for compatible Ford and Lincoln vehicles. These keys may use one-way or two-way remote systems and can feature different button configurations.

Common FCC IDs associated with 902 MHz products include:

• M3N-A2C31243300
• M3N-A2C931426
• M3N-A2C93142600
• M3N-A3C054339

Some 902 MHz keys use ID49 transponder technology. However, chip type, frequency, and FCC ID should all be verified independently.

A key should never be selected based only on its 902 MHz frequency.

ID49 Proximity Keys

Many Ford and Lincoln proximity systems use an ID49 transponder. This component communicates with the immobilizer and must be correctly programmed before the vehicle will authorize starting.

The key’s remote functions and immobilizer authorization are related but distinct. A technician should confirm that:

• The vehicle recognizes the transponder
• Passive-entry functions operate
• Push-button starting works
• Remote buttons perform their intended functions
• The emergency blade provides mechanical access

Some Ford applications have specific security-access or programming requirements. Confirm tool support before beginning the procedure.

Three-Button Smart Keys

Three-button Ford proximity keys commonly include:

• Lock
• Unlock
• Panic

Certain three-button keys may be intended for vehicles without factory remote start, trunk release, or power-liftgate controls.

Do not assume that a three-button key will replace a four- or five-button version simply because the FCC ID appears similar. The correct key should preserve the vehicle’s original supported functions.

Four-Button Proximity Keys

Four-button proximity keys may add a vehicle-specific function to the standard lock, unlock, and panic controls.

Common fourth-button functions include:

• Remote start
• Trunk release
• Liftgate release
• Tailgate release

The icon, location, and function of the fourth button must match the vehicle’s factory equipment. Review the product photos and complete specifications before ordering.

Five-Button Ford and Lincoln Smart Keys

Five-button proximity keys are common across numerous Ford and Lincoln vehicles. Depending on the application, they may provide:

• Lock
• Unlock
• Panic
• Remote start
• Trunk, liftgate, or tailgate release

Multiple five-button Ford smart keys can look nearly identical while using different FCC IDs or frequencies. For example, available five-button keys may operate at 315, 434, or 902 MHz.

Button count alone is not a compatibility indicator.

One-Way Proximity Keys

A one-way remote sends a command to the vehicle without receiving confirmation back from it. The user presses a button, and the key transmits the lock, unlock, remote-start, or other supported command.

One-way Ford proximity keys may be available with different:

• Frequencies
• FCC IDs
• Button layouts
• Part numbers
• Vehicle applications

A one-way key should be matched to a vehicle designed for the corresponding system.

Two-Way Ford and Lincoln Keys

A two-way smart key can support communication from the key to the vehicle and confirmation from the vehicle back to the key. Depending on the application, this may allow the remote to indicate that a command was received or that remote start was activated.

Two-way proximity keys may use different electronics from similar-looking one-way keys. Confirm:

• One-way or two-way operation
• FCC ID
• Frequency
• Button configuration
• Vehicle equipment
• Programmer compatibility

Do not substitute a one-way key unless reliable application data confirms that it is an approved replacement.

Motion-Sensing Proximity Keys

Select newer Ford OEM keys may include motion-sensing technology. This feature is designed to change the key’s behavior after it remains stationary for a certain period.

A motion-sensing key should be selected only for supported applications. Confirm the OEM part number, FCC ID, frequency, and exact vehicle fitment before ordering.

A standard key with the same exterior appearance may not provide the same security features.

New OEM Ford and Lincoln Keys

New OEM proximity keys use original manufacturer electronics and housings. They can be appropriate when factory components are preferred or required for a specific vehicle application.

Before ordering a new OEM key, confirm:

• OEM part number
• Engineering number
• FCC ID
• IC number
• Frequency
• Button layout
• Battery
• Emergency blade
• Vehicle fitment
• Programming requirements

An OEM key is not automatically universal across Ford or Lincoln vehicles. It must match the intended application.

Paladin Premium Aftermarket Keys

This collection includes Paladin premium aftermarket proximity keys for compatible Ford and Lincoln vehicles.

Paladin keys are designed to provide reliable, quality-tested replacements for professional locksmith use. Quality testing helps support consistent electronics, dependable case construction, and accurate operation when the correct key is selected and programmed.

A Paladin key must still match the vehicle’s:

• FCC ID
• Frequency
• Transponder type
• Button layout
• Part number
• Emergency blade
• Security system

Quality construction cannot make an electronically different key compatible.

Other Aftermarket Proximity Keys

Aftermarket Ford and Lincoln smart keys provide economical alternatives to new dealership keys. These products may be useful for spare-key creation, customer replacement jobs, and supported all-keys-lost situations.

Before cutting or programming an aftermarket key, inspect it and verify:

• Product condition
• Key specifications
• Emergency blade
• Button functions
• Programmer coverage
• Vehicle compatibility

Aftermarket products should be tested completely after programming.

Refurbished OEM Grade A Keys

Grade A refurbished proximity keys reuse original OEM electronics that have been inspected and prepared for another supported application.

A Grade A key is generally selected when the customer or technician wants reusable OEM electronics in better cosmetic condition. Minor evidence of previous handling may still be present.

Confirm whether the refurbished key is ready for programming and compatible with the intended vehicle. Ford and Lincoln keys can retain application-specific data or require specialized resetting procedures.

Refurbished OEM Grade B Keys

Grade B refurbished keys also use OEM electronics but may show more cosmetic wear than Grade A products.

Cosmetic differences may include:

• Surface scratches
• Worn button icons
• Housing marks
• Finish wear
• Other visible signs of prior use

The individual listing should be reviewed for product condition and included components. Cosmetic grade does not replace the need to verify the key’s electronic specifications.

Recased OEM Proximity Keys

Recased Ford and Lincoln keys combine original OEM electronics with a replacement exterior housing. This can provide the electronic benefits of an OEM board with the cleaner appearance of a newer shell.

A recased key may be useful when the original electronics remain suitable but the previous housing was worn or damaged.

Confirm the key’s:

• OEM electronics
• Replacement shell configuration
• Button arrangement
• FCC ID
• Frequency
• Included emergency blade
• Programming status

The replacement housing does not change the electronic compatibility of the OEM circuit board inside.

CR2032 and CR2450 Batteries

Ford and Lincoln proximity keys may use batteries such as:

• CR2032
• CR2450

Battery type depends on the key design. Use the battery specification in the individual listing rather than assuming that every key with the same button count uses the same battery.

A weak battery can cause reduced range, intermittent passive entry, unreliable remote functions, or difficulty detecting the key inside the vehicle.

Install the correct battery, confirm its polarity, and test all functions after programming.

Emergency Key Blades

Most proximity keys include or accept an emergency mechanical blade. This blade provides access to the vehicle when the key battery or vehicle battery is depleted.

Before cutting the blade, verify:

• Correct blade profile
• Blade dimensions
• Key-code information
• Cutting-machine setup
• Compatibility with the proximity-key housing

The emergency blade and electronic key serve different purposes. A correctly cut blade provides mechanical access but does not program the proximity key or authorize vehicle starting.

Adding a Ford or Lincoln Proximity Key

An add-key procedure is performed when at least one working key remains available. Depending on the vehicle, having a working key may simplify security access or change the programming steps.

Before beginning, verify:

• Number of currently working keys
• Required programmer
• Software coverage
• Security-access requirements
• Key compatibility
• Vehicle voltage
• Whether all keys must be present

After programming, test the new key and confirm that all previously registered keys still operate.

Ford and Lincoln All-Keys-Lost Programming

All-keys-lost procedures can require additional preparation because no original working key is available.

The technician may need to:

• Verify vehicle ownership
• Identify the security system
• Select the correct blank key
• Obtain security access
• Read immobilizer information
• Erase or register keys
• Cut the emergency blade
• Complete parameter or module functions
• Test passive entry and starting

Tool support varies by model, year, and security platform. Review the correct procedure before connecting programming equipment.

Key Programming and Function Testing

A proximity key must be programmed to the vehicle before it can authorize starting. Remote and passive-entry functions should also be tested after the procedure.

Complete testing should include:

• Lock button
• Unlock button
• Panic alarm
• Remote start
• Trunk or liftgate release
• Tailgate function
• Passive entry
• Push-button starting
• Key detection inside the vehicle
• Emergency blade operation
• Two-way confirmation when equipped

Do not consider the job complete after the engine starts. Every intended key function should be verified.

How to Choose the Correct Ford or Lincoln Proximity Key

Before ordering, confirm:

1. Vehicle year, make, and model
2. Trim level and factory equipment
3. Complete FCC ID
4. IC number
5. Manufacturer or OEM part number
6. Operating frequency
7. Transponder-chip type
8. Number of buttons
9. Button icons and positions
10. One-way or two-way operation
11. Motion-sensing requirements
12. Emergency blade profile
13. Battery type
14. New, aftermarket, refurbished, or recased condition
15. Programmer and procedure coverage

Checking each specification helps prevent incorrect orders and unsuccessful programming attempts.

Shop Ford and Lincoln Proximity Keys

Browse Ford and Lincoln proximity keys at Noble Key Supply. Choose from quality-tested Paladin replacements, other aftermarket options, new OEM keys, refurbished OEM keys, and recased OEM smart keys.

With 315 MHz, 434 MHz, and 902 MHz configurations, multiple FCC IDs, and three-, four-, and five-button layouts, this collection supports a broad range of compatible Ford and Lincoln keyless-entry and push-button-start applications.

Compare the complete product specifications and vehicle fitment before ordering, cutting, or programming.