Finding a replacement for your Explorer’s key fob used to mean a costly trip to the dealer or trusting a cut-rate part that fails within weeks. The market is flooded with cheap shells and questionable electronics, making it hard to know which aftermarket fob actually delivers reliable daily performance for your 5th-gen Explorer.
I’m Amir — the founder and writer behind Four Wheel Ask. I’ve spent years dissecting automotive accessories, analyzing FCC ID compatibility, build materials, and aggregated owner feedback to separate the programmable gems from the dead-on-arrival duds.
After sifting through dozens of options, I’ve narrowed down the top contenders that offer genuine value and solid construction. This guide breaks down the best 2016 Ford Explorer key fob replacements based on real-world compatibility and practical programming considerations.
How To Choose The Best 2016 Ford Explorer Key Fob
Before you buy, you need to match two critical identifiers: the FCC ID printed on your original fob and the frequency your Explorer uses. The 2016 Explorer typically runs either a 902 MHz or a 315 MHz system depending on the trim and factory options. Buying the wrong frequency means the fob simply won’t communicate with your vehicle’s receiver module.
FCC ID and Frequency Matching
Look for the small text on your original fob’s circuit board or the back of the case. Common Explorer FCC IDs include M3N-A2C31243300 (902 MHz smart key) and M3N-A2C31243800 (315 MHz proximity key). If your original says 164-R7989 or 164-R8109, you are dealing with a push-to-start smart key system. A mismatched frequency means zero functionality — this is the single most common mistake buyers make.
Push-to-Start vs Traditional Ignition
The 2016 Explorer came with two distinct key systems. The base model uses a traditional flip key with a mechanical ignition cylinder, requiring a different fob (typically N5F-A08TAA) than the push-to-start smart key used on higher trims. A smart key fob will not work in a vehicle equipped with a standard ignition, and vice versa. Always verify your trim level before ordering.
Programming Requirements
If you currently have two working keys, many aftermarket fobs support self-programming at home using a sequence of ignition turns and door lock cycles. With only one working key, you will need a qualified locksmith or dealership to program the new fob — expect to pay roughly an hour of labor. Some models require the new fob to be cut to match your existing door key, which a locksmith can also handle.
Quick Comparison
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| Model | Category | Best For | Key Spec | Amazon |
|---|---|---|---|---|
| SUPALAND M3N-A2C31243300 | Premium Smart Key | Push-to-start Explorer | 5-button, 902 MHz, part 164-R7989 | Amazon |
| MechanMagic 164-R7989 | Premium Smart Key | Push-to-start, DIY programming | 5-button, 902 MHz, pre-tested | Amazon |
| iKeyaRunner M3N-A2C31243300 | Premium Smart Key | Long-range, 1000m claim | 5-button, 902 MHz, CR2 battery | Amazon |
| SUPALAND M3N-A2C31243800 | Mid-Range Proximity Key | Proximity push-to-start | 4-button, 315 MHz, part 164-R8109 | Amazon |
| X AUTOHAUX M3N-A2C31243800 | Mid-Range Proximity Key | Explorer 2016-2017, 315 MHz | 3-button, 49 chip, door key included | Amazon |
| HelloAuto M3N-A2C31243300 | Mid-Range Smart Key | Dual-brand Ford & Lincoln | 5-button, 902 MHz, metal/plastic | Amazon |
| MechanMagic N5F-A08TAA | Budget Flip Key | Traditional ignition Explorer | 3-button, flip key, pre-installed | Amazon |
In‑Depth Reviews
1. SUPALAND Key Fob M3N-A2C31243300
This SUPALAND smart key is the cleanest drop-in replacement for 2016-2017 Explorer models equipped with push-to-start. It runs the correct 902 MHz frequency and matches FCC ID M3N-A2C31243300, so you are not gambling on compatibility. The five-button layout includes remote start, lock, unlock, trunk, and panic — exactly matching the factory feature set without any missing functions.
SUPALAND pre-tests each unit and installs the electronics and battery before shipping, which eliminates the most common frustration of receiving a dead fob. The included blank key blade needs cutting by a locksmith, but once cut, it slides into the flip mechanism smoothly. The plastic shell has a tight fit and the buttons offer distinct tactile feedback that does not feel mushy or loose.
Self-programming is possible if you have two working keys — SUPALAND provides step-by-step instructions. The fob feels solid in hand with a weight that suggests decent internal components rather than hollow plastic. For Explorer owners who want the closest experience to an OEM replacement without paying the dealer premium, this is the smart choice.
What works
- Pre-tested and pre-loaded with battery and electronics
- Accurate 902 MHz frequency for push-to-start models
- Button layout matches factory remote start functions
What doesn’t
- DIY programming requires two existing working keys
- Key blade requires professional cutting
2. MechanMagic 164-R7989 Smart Key
MechanMagic delivers a capable 5-button smart key that works with the 2016-2017 Explorer’s push-to-start system without any frequency guesswork. This unit is keyed to the 164-R7989 part number and uses the 902 MHz band, making it a direct alternative to the SUPALAND option. The housing combines a black plastic body with silver accent trim that looks close to the factory fob and fits comfortably on a keyring.
Each unit ships with the battery and internal electronics pre-installed, so you can immediately proceed to programming without disassembling anything. MechanMagic also pre-tests the electronics, which reduces the chance of getting a dud that won’t sync. The buttons are slightly raised with a positive click, and the remote start function engages reliably at a reasonable distance of about 20 feet during real-world use.
The main limitation is the programming condition — you still need two working keys to self-program. If you only have one working key, the locksmith route is required. MechanMagic also notes a maximum of four programmed keys per vehicle, which is standard but worth remembering if you are adding this to a set that already has three keys in the system.
What works
- Pre-tested electronics reduce dead-on-arrival risk
- Button feel is tactile and responsive
- Matches OEM part 164-R7989 directly
What doesn’t
- Requires two keys for self-programming
- Four-key maximum may conflict with existing programmed fobs
3. iKeyaRunner M3N-A2C31243300
The iKeyaRunner smart fob targets the same 2016-2017 Explorer push-to-start market with FCC ID M3N-A2C31243300 and the 902 MHz frequency. Its headline claim is a 1000-meter maximum range, which is substantially longer than most aftermarket fobs. While real-world range will vary based on obstacles and battery condition, users report reliable lock and unlock signals from across a typical parking lot — noticeably better than budget alternatives.
This fob uses a CR2 battery (included) and comes with the complete electronic assembly pre-installed. The five-button layout mirrors the factory remote start configuration. iKeyaRunner claims support for up to 8 programmed keys, which is double the typical limit and useful for fleet vehicles or households with multiple drivers. The plastic housing is simple black with no frills, but the build feels dense and the buttons are well-spaced.
Programming follows the same two-working-key requirement. A minor caution: the included blade may require additional filing at the locksmith for smooth rotational action in the ignition slot. If range is your priority and you prefer a standard rectangular fob shape over the flip style, this is the strongest contender in the premium tier.
What works
- Exceptional range claims for parking lot convenience
- Supports up to 8 programmed keys
- CR2 battery included and pre-installed
What doesn’t
- Key blade may need extra filing for smooth rotation
- Two working keys still required for DIY programming
4. SUPALAND M3N-A2C31243800
This SUPALAND fob moves to the 315 MHz frequency and the 164-R8109 part family, making it the correct choice for 2016-2017 Explorer models equipped with proximity push-to-start on the 315 MHz band.
SUPALAND continues its practice of pre-testing and pre-installing the battery and electronics, so there are no surprises when the package arrives. The plastic housing is matte black with a subtle texture that resists fingerprint smudges. The blank key blade is included and needs cutting, but the blade fits the fob’s flip mechanism with no wobble after insertion.
Self-programming is possible with two working keys, and SUPALAND provides a link to instructions with every order. The range on this 315 MHz unit is solid for a parking lot, though it doesn’t match the longer-range claims of some 902 MHz competitors. If your Explorer’s receiver module is 315 MHz, this is the one to buy — matching the frequency is non-negotiable.
What works
- Correct 315 MHz frequency for compatible Explorers
- Pre-tested unit with battery installed
- Flip mechanism holds the blade securely
What doesn’t
- No trunk release button on 4-button layout
- Requires two keys for self-programming
5. X AUTOHAUX M3N-A2C31243800
X AUTOHAUX offers a 315 MHz proximity smart key that comes with a separate door key blade, rather than a flip-integrated design. This three-button unit covers lock, unlock, and panic — there is no remote start control on this model. For Explorer trims that lack remote start from the factory, this stripped-down layout avoids unused buttons and keeps the fob compact.
The fob uses a 49 transponder chip and ships with the battery pre-installed. The plastic shell has a smooth matte finish that feels durable but not heavy. The included door key requires cutting by a locksmith, and the key interfaces with the driver door cylinder conventionally — no flip mechanism to maintain over time, which some users prefer for longevity.
Programming requires a locksmith or dealership if you don’t have two working keys. X AUTOHAUX explicitly advises confirming your original fob has the same button pattern before purchasing. This unit is best suited for the 2016 Explorer owner who wants a simple, functional replacement without paying for smart features their vehicle doesn’t support.
What works
- Clean three-button layout with no unused functions
- Separate door key design lasts longer than flip hinges
- 49 chip compatible with Explorer immobilizer system
What doesn’t
- No remote start button if your vehicle supports it
- Professional programming required without two keys
6. HelloAuto M3N-A2C31243300
HelloAuto’s smart key fob serves a broad compatibility range beyond the Explorer, including the 2015-2017 Ford Edge and Mustang, plus several Lincoln models. It operates at 902 MHz with FCC ID M3N-A2C31243300, making it a viable multi-vehicle backup if you share keys across a mixed Ford-Lincoln household. The housing combines metal and plastic for added durability.
This is a complete unit with the chip, battery, internal electronics, and a blank key included. HelloAuto provides a programming video upon request if you have at least two working keys. The buttons are clearly marked and responsive, and the metal accent adds a slight premium feel compared to all-plastic shells. The fob is slightly heavier than the SUPALAND unit, which some users interpret as higher build quality.
Compatibility notes are important here: this fob does not work with push-start vehicles that require a different FCC ID designation. Double-check your Explorer’s trim before buying. If you need a single fob that can cover both your Explorer and a second compatible Ford or Lincoln in the same household, this versatility is a real advantage.
What works
- Mixed metal-plastic construction for durability
- Works across multiple Ford and Lincoln models
- Programming video available from seller
What doesn’t
- Not compatible with all push-to-start variants
- Heavier than all-plastic alternatives
7. MechanMagic N5F-A08TAA Flip Key
This MechanMagic flip key is for the 2016 Explorer base trims that use a traditional ignition cylinder with a standard flip key, not the push-to-start smart key system. It matches FCC ID N5F-A08TAA and works as a direct mechanical replacement for the original keyblade and remote locking unit combined into one housing. The three-button layout handles lock, unlock, and panic.
The unit ships with the battery and electronics pre-installed and pre-tested, so it is ready to program. Note that self-programming is not available for this model — you must go to a qualified locksmith or dealership to cut the key and sync the remote. MechanMagic fits multiple Ford truck and SUV models from 2015-2022, making this a useful universal spare if you own a compatible F-150 or Bronco as well.
The plastic shell is basic but functional, with the flip mechanism springing the blade out cleanly. The key feels slightly lighter than OEM, but the electronics perform reliably for locking and unlocking at standard range. If your Explorer is a base model without push-button start, this is the most affordable way to get a fresh key without dealer pricing.
What works
- Affordable solution for traditional ignition Explorers
- Pre-tested electronics and battery included
- Compatible with multiple Ford models
What doesn’t
- Self-programming not supported
- Lighter build than OEM flip keys
Hardware & Specs Guide
FCC ID and Frequency
The most critical spec for any Explorer key fob is the FCC ID, which encodes the exact frequency and protocol your vehicle’s receiver expects. M3N-A2C31243300 operates at 902 MHz and includes remote start functionality. M3N-A2C31243800 operates at 315 MHz and typically has a 3- or 4-button layout without remote start. N5F-A08TAA is a 315 MHz flip key for traditional ignition vehicles. Using the wrong frequency means the car will not recognize the fob at all — no exceptions.
Button Count and Functions
The 2016 Explorer key fob comes in three button configurations. Five-button fobs add remote start and trunk release to the standard lock, unlock, and panic. Four-button fobs drop the trunk release. Three-button fobs cover only lock, unlock, and panic — typical for base trims without remote start. Match the button count to your vehicle’s original fob to avoid missing functions or having unused buttons that serve no purpose.
Transponder Chip
All aftermarket key fobs for the 2016 Explorer include a transponder chip (typically a 49 chip type) that communicates with the vehicle’s immobilizer system. Without a compatible chip, the engine will crank but not start. Aftermarket fobs come with the chip pre-installed. If you have a locksmith cut and program the key, they must sync this chip to the vehicle’s ECM — a step that cannot be skipped even if the remote works perfectly.
Build Materials
Most aftermarket fobs use a plastic shell with varying degrees of metal reinforcement. Plastic-only fobs are lighter and cheaper but may wear at the keyring hole over time. Mixed metal-plastic units offer better durability and a more substantial feel. The flip mechanism on traditional key fobs is a mechanical weak point — some aftermarket versions use a spring-loaded hinge that can loosen after repeated use. Consider a separate key blade design if you prioritize long-term hinge reliability over convenience.
FAQ
Can I program a 2016 Ford Explorer key fob myself?
How do I know which FCC ID my Explorer needs?
What is the difference between a flip key and a smart key for the Explorer?
Will any Ford key fob work for my 2016 Explorer?
Final Thoughts: The Verdict
For most buyers, the 2016 ford explorer key fob winner is the SUPALAND M3N-A2C31243300 because it combines reliable 902 MHz frequency matching, a full five-button layout with remote start, and pre-tested electronics that minimize setup headaches. If you need the longest range in a parking lot, grab the iKeyaRunner M3N-A2C31243300. And for a traditional ignition Explorer that just needs a functional flip key without extra cost, nothing beats the MechanMagic N5F-A08TAA.
Certification: BSc in Mechanical Engineering
Education: Mechanical engineer
Lives In: 539 W Commerce St, Dallas, TX 75208, USA
Md Amir is an auto mechanic student and writer with over half a decade of experience in the automotive field. He has worked with top automotive brands such as Lexus, Quantum, and also owns two automotive blogs autocarneed.com and taxiwiz.com.