2016-2018 Nissan Infiniti QX60 Q50 Key Fob KR5S180144014 for Keylessbest

If you’ve lost your only key, cracked your remote, or just want a spare before something goes wrong, this Keylessbest KR5S180144014 smart key is built for you. I manufacture this 5‑button Nissan/Infiniti proximity key to match the functions of the original dealer remote at a much better price.

This 2016–2018 Nissan Maxima key fob, 2016–2018 Nissan Altima smart key, and Infiniti Q50/Q60 keyless entry remote is designed for:

• FCC ID: KR5S180144014
• PN: 285E3-4RA0B,285E3-9NF5A
• IC: 7812D-S180204
• Frequency: 433MHz
• Chip: 4A
• Buttons: Unlock, Lock, Panic, Trunk, Remote Start

• The Reference Model: 
• 2016 – 2018 Nissan Maxima
• 2016 – 2018 Nissan Altima
• 2016 – 2018 Infiniti QX60 (Hatch won’t work)
• 2016 – 2018 Infiniti Q50 ( 5 Button Remotes Only)
• 2017 – 2018 Infiniti Q60
  NOTE: 2016 Q50 has 3 separate prox options, all with different FCC’s – run VIN with the dealer to confirm OEM part before ordering!

• Drivers with a damaged, missing, or unreliable factory key
• Anyone who wants a backup key fob that actually works like OEM
• Owners looking for remote start, lock/unlock, trunk, and panic in one smart key

You’d pick this Keylessbest replacement key fob over a dealer key because:

• Same core specs as OEM (433MHz, 4A chip, FCC ID KR5S180144014)
• Hundreds less than what most US dealers charge for an Infiniti or Nissan key fob
• Pre-tested, battery installed, and ready for professional programming
• Built with solid buttons and durable housing for real daily use, not just lab specs

If you drive a 2016–2018 Nissan Maxima or Altima or a compatible Infiniti Q50 2016–2019 / Q60 2017–2018 with a 5-button proximity remote, this Keylessbest smart key is a practical, cost-effective replacement that keeps all your original keyless and push-to-start features.

Key Features of the 2016-2018 Nissan Maxima Altima Infiniti Q50 Q60 Key Fob KR5S180144014

I build these Nissan / Infiniti 5-button proximity keys to match OEM performance, without the dealer price. Here’s what matters most:

5-Button Smart Layout

You get all the functions your factory remote had:

• Lock
• Unlock
• Trunk release
• Panic alarm
• Remote start (for vehicles equipped with factory remote start)

Proximity Smart Key + Push-to-Start

This is a true proximity smart key for push-button start models:

• Walk up, grab the handle, and the car unlocks (if your car supports it)
• Leave the key in your pocket or bag and just press START/STOP
• Built to work seamlessly with Nissan and Infiniti keyless entry systems

If you’re interested in how these systems tie into overall vehicle protection, I go deeper into it in my vehicle security overview.

433MHz Frequency + 4A Chip

We use the correct electronics for these models:

That combo is what allows the car to recognize the key, start, and operate all remote functions reliably.

Solid Build, Fully Tested

I don’t ship raw, untested shells:

• High-quality plastic shell with tight fit and good hand feel
• Buttons have a firm, clean click
• Each remote is pre-tested for:
  • Signal strength
  • Button function
  • Chip response

Battery Included – Ready to Program

• Pre-installed CR2032 battery
• Out of the box, it’s ready for your locksmith or dealer to program
• No need to source your own battery just to get started

Emergency Key Blade for Everyday Backup

You also get a cuttable emergency key blade:

• Use it to manually unlock the door if the battery dies
• Essential backup if you’re stuck in cold weather or a low-battery situation
• Blade slides into the fob just like the OEM design

This setup gives you the same everyday usability as the original Nissan / Infiniti proximity remote, built for U.S. drivers who want dealer-level function without dealer-level cost.

Vehicle Compatibility for 2016-2018 Nissan Maxima, Altima, Infiniti Q50, Q60

This Nissan / Infiniti 5-button proximity key fob (FCC ID KR5S180144014, 433MHz, 4A chip) is built to match specific push-to-start models. If you’re in the U.S., use this as a clear fitment guide before you buy.

Nissan Maxima 2016–2018 Compatibility

This smart key works with:

• 2016, 2017, 2018 Nissan Maxima
• Must be push-to-start with factory remote start
• Original key should be a 5-button proximity key: Lock, Unlock, Trunk, Panic, Remote Start

Nissan Altima 2016–2018 Compatibility

Designed for:

• 2016, 2017, 2018 Nissan Altima (select trims with push button start)
• Vehicle must use a proximity smart key, not a standard flip or metal key
• Your OEM fob should also have 5 buttons with remote start

Infiniti Q50 2016–2019 Compatibility (5-Button Only)

This KR5S180144014 fob fits:

• 2016, 2017, 2018, 2019 Infiniti Q50
• Only models that came with a 5-button proximity key (with remote start)

Important note for 2016 Q50 owners:

• 2016 Infiniti Q50 has 3 different proximity key options, all with different FCC IDs
• Do not guess—have your dealer run your VIN to confirm the correct OEM part number before ordering

Infiniti Q60 2017–2018 Compatibility

Compatible with:

• 2017, 2018 Infiniti Q60
• Push-to-start vehicles using the 5-button smart key with remote start
• Proximity key only, not a standard non-prox remote

How to Match Your FCC ID KR5S180144014

Before you order, pull your original key fob and check:

• FCC ID: Must say KR5S180144014
• IC: 7812D-S180204
• Continental: S180144310
• Part Numbers (PN): 285E3-4RA0B or 285E3-9NF5A

If your FCC ID is different, there’s a good chance this key won’t program, just like a 2016-2017 Honda Accord remote won’t work on other FCC IDs even if it “looks” the same.

Match Button Layout and Key Type

You should see this exact setup:

• 5 Buttons: Lock, Unlock, Trunk, Panic, Remote Start
• Proximity smart key for push-to-start (no metal key you turn in the column)

If your original key:

• Has 3 or 4 buttons (no remote start), or
• Is non-prox (you insert/turn a key),
  then this is not the right fob.

Common Compatibility Mistakes to Avoid

Avoid these issues that cause programming failures and wasted locksmith trips:

• Buying only by year/make/model without checking FCC ID
• Ignoring the button count (trying to replace a 3- or 4-button with a 5-button)
• Mixing up proximity keys with standard keys
• Assuming all 2016 Q50 keys are the same (they’re not—always confirm by VIN)

If you’re unsure, take a clear photo of your original key (front and back) and your VIN and confirm with your locksmith or dealer before purchasing.

KR5S180144014 Technical Specs & Part Numbers

I’ll keep this tight and straight to the point so you can quickly confirm if this 2016–2018 Nissan Maxima Altima Infiniti Q50 Q60 key fob KR5S180144014 is the one you need.

Core Identification

These IDs must match (or directly cross-reference) your original key or your dealer’s VIN lookup.

Frequency & Chip (433MHz, 4A Chip)

This combo is what lets the car recognize the key for keyless entry, push button start, and remote start.

5-Button Layout & Functions

• Lock – locks all doors
• Unlock – unlocks driver or all doors (depending on car settings)
• Trunk – opens trunk/boot release
• Panic – sounds horn and flashes lights
• Remote Start – starts engine remotely on equipped vehicles

Layout matches OEM 5‑button Nissan/Infiniti proximity remotes for these years.

Battery & Power Details

When it’s time to replace, any local store that sells coin batteries will have CR2032 cells. Shipping timelines for items like this follow our standard Keylessbest shipping information.

What You Get from Keylessbest

In the box, I include:

• 1x complete KR5S180144014 5-button smart key fob (new shell + electronics)
• 1x pre-installed CR2032 battery
• 1x uncut emergency key blade inside the fob housing

Programming and cutting are done by your local locksmith or dealer, but everything on the hardware side is ready to go right out of the package.

How This Nissan Maxima Altima Infiniti Q50 Q60 Smart Key Fob Works

Proximity keyless entry on Nissan & Infiniti

With this KR5S180144014 smart key in your pocket or bag, the car senses the fob automatically:

• Walk up, grab the door handle, and the doors unlock (no need to press the remote).
• Press the small button on the handle to lock the car when you walk away.
• Range is short on purpose – it’s designed to work only when you’re near the door, which keeps it secure.

This is the same style of proximity keyless entry you’ll see on newer Honda and Toyota proximity remotes like this 5‑button Accord smart key.

Push-to-start & remote start behavior

Once you’re inside:

• Push-to-start:
  • Foot on the brake + key inside the car → press START/STOP → engine starts.
  • Press again (with foot on brake) to shut the engine off.
• Remote start:
  • Usually: press lock, then hold the remote start button (circular/arrow icon) a few seconds.
  • The car will start, run for a timed period, and shut off if you don’t get in and press START.
  • You still need the key inside the car and the brake pressed to drive away.

Using the emergency key blade

If the key fob battery dies or the car’s 12V battery is weak, you’re still not stuck:

• Slide the release on the back of the fob and pull out the emergency key blade.
• Use the metal key to unlock the driver’s door manually.
• In most Nissan/Infiniti models, you can start the car by:
  • Holding the fob directly against the START button, then
  • Pressing the button with your foot on the brake.

Real-world everyday use

Here’s how most owners use this 5‑button Nissan / Infiniti key fob day to day:

• Lock: One press to lock all doors, second press (on many models) to confirm with a horn chirp.
• Unlock: One press for driver door, second press for all doors (depending on settings).
• Trunk: Hold the trunk button to pop the trunk on Maxima, Altima, Q50, or Q60.
• Panic: Hold the red panic button to trigger the alarm in a parking lot or emergency.
• Remote Start: Start the car from your driveway or parking spot to pre-heat or cool the cabin before you get in.

Programming the KR5S180144014 Key Fob

Why you need a locksmith or dealer

The 2016–2018 Nissan Maxima / Altima and 2016–2019 Infiniti Q50 / 2017–2018 Q60 use an encrypted immobilizer system and a 4A chip. This KR5S180144014 smart key has to be programmed into your car’s computer with professional tools. There’s no “at-home” on-board programming for this proximity key, which is why you’ll need an automotive locksmith or dealer.

How to avoid programming issues and extra costs

You can save time and money if you:

• Match your FCC ID and part numbers (KR5S180144014, S180144310, 285E3-4RA0B, 285E3-9NF5A) before buying.
• Bring all working keys to the appointment so nothing gets accidentally erased.
• Verify your Infiniti Q50/Q60 info—2016 Q50 has multiple prox options, so run your VIN with a dealer to confirm OEM part number before ordering.
• Ask about failed-programming policy so you’re not stuck paying full price if your car and key aren’t compatible.

Do this upfront, and your new Keylessbest Nissan/Infiniti 5‑button proximity key should program cleanly the first time with no surprise fees.

Battery Replacement and Emergency Key Blade Use

Keeping your 2016–2018 Nissan Maxima / Altima or Infiniti Q50 / Q60 KR5S180144014 key fob powered and usable in an emergency is simple if you know the basics.

How to open the KR5S180144014 key fob safely

1. Remove the emergency key blade
   • Slide the small release switch on the back/side of the fob.
   • Pull the metal key blade out.
2. Separate the key fob case
   • Use the removed key blade or a small flat screwdriver.
   • Gently twist in the seam where the key blade came out.
   • Work your way around the edge—don’t force it or you can crack the shell.
3. Expose the battery compartment
   • Once the case splits, you’ll see the round battery (CR2032).
   • Avoid touching the circuit board more than necessary.

Step-by-step CR2032 battery change

1. Take out the old battery
   • Use a plastic tool or fingernail to pry it up from the edge.
   • Note the + (positive) side facing up.
2. Install the new CR2032 battery
   • Insert the new battery with the + side up, same as the original.
   • Press it in until it sits flat and secure.
3. Reassemble the key fob
   • Snap the two case halves back together evenly.
   • Reinsert the emergency key blade until it clicks.
   • Test lock/unlock and remote start near the vehicle.

Signs your key fob battery is going bad

Watch for these early warning signs:

• You have to be very close to the car for buttons to work.
• Remote start or trunk release works only sometimes.
• The car shows a “Key ID Incorrect” or “No Key Detected” message randomly.
• The push-to-start button needs multiple presses to recognize the key.

If you’re seeing any of this, swap the CR2032 now instead of waiting for a no-start situation.

How to use the emergency key blade to unlock the door

If the key fob battery dies completely:

1. Pull out the emergency key blade using the release switch.
2. On the driver’s door handle, locate the key cylinder (sometimes hidden under a small cap).
3. Insert the blade and turn like a normal key to unlock the door.
4. Once inside, keep the dead fob with you for starting.

How to start your Nissan or Infiniti with a weak or dead key fob

Even with a dead battery, the smart system usually lets you start the car:

1. Hold the key fob against the start button (logo side toward the button usually works best).
2. Step on the brake pedal firmly.
3. While holding the fob there, press the start button with the fob itself.
4. The car should recognize the transponder chip and start.

This backup method is built into most Nissan and Infiniti push-to-start systems that use the KR5S180144014 5-button proximity key, so you’re not stranded just because the battery went out.

Aftermarket vs OEM Nissan Infiniti Key Fobs

Price: Keylessbest vs Dealer OEM

If you walk into a Nissan or Infiniti dealer for a 2016–2018 Maxima, Altima, or Infiniti Q50/Q60 smart key (FCC ID KR5S180144014), you’re usually looking at:

• Dealer OEM key fob + cutting + programming: often $250–$450+ per key
• Keylessbest aftermarket KR5S180144014 key fob: typically a fraction of dealer pricing, even after you pay a local locksmith to cut and program it

For most U.S. drivers, going aftermarket means you can:

• Replace lost or damaged keys without blowing your budget
• Add a spare key now, instead of waiting for an emergency

Daily Performance & Reliability

Our Keylessbest 5‑button proximity key is built to perform like the original:

• Same 433MHz frequency and 4A chip for proper communication
• All functions supported when correctly matched and programmed: lock, unlock, trunk, panic, remote start, push-to-start
• Solid shell and buttons designed for daily use, pocket drops, and keychain wear

In normal use, you shouldn’t notice a difference vs an OEM remote—what matters is matching the FCC ID KR5S180144014 and the 5-button layout to your vehicle.

Warranty, Returns & Peace of Mind

With dealer OEM keys, you mostly pay for the brand name and dealership overhead. With us, you’re paying for:

• A pre-tested KR5S180144014 key fob before it leaves the factory
• Clear compatibility info (Maxima, Altima, Infiniti Q50/Q60 years and trims)
• Support if your locksmith has questions or you run into a programming issue

If you’re worried about long‑term use, remember that in most cases the thing that fails first is the battery, not the shell or chip. We already ship this fob with a CR2032 battery installed, and you can see our detailed guide on how to deal with a low key fob battery and symptoms to watch for.

When OEM Is Worth It vs When Aftermarket Is Smarter

OEM might be worth it if:

• You’re under a strict lease or warranty requirement that demands OEM-only parts
• Your Infiniti Q50 2016 has one of the unusual prox options and the dealer confirms a different FCC ID than KR5S180144014

Aftermarket (Keylessbest) is usually the smarter move if:

• You lost your only key and need a cost‑effective replacement
• You want a backup smart key for a family driver or teen driver
• Your original remote is cracked, glitchy, or missing buttons, and you want something that just works without dealer pricing

Bottom line: if your car matches FCC ID KR5S180144014 and the 5-button proximity layout, our Keylessbest Nissan/Infiniti key fob gives you OEM-level function at a much lower total cost once you factor in cutting and programming.

FAQ for 2016–2018 Nissan Maxima Altima Infiniti Q50 Q60 Key Fob KR5S180144014

Does this key fob come already programmed?

No. Every KR5S180144014 smart key has to be programmed to your specific Nissan or Infiniti. You’ll need an automotive locksmith or dealer with the right tool to program the proximity, remote start, and push-to-start functions.

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How do I double-check compatibility for my Infiniti Q50 or Q60?

For Infiniti Q50 (2016–2019, 5-button only) and Q60 (2017–2018):

• Match these details on your original key:
  • FCC ID: KR5S180144014
  • IC: 7812D-S180204
  • Buttons: 5 buttons (Lock, Unlock, Trunk, Panic, Remote Start)
• For 2016 Q50, there are 3 different proximity keys. I strongly recommend you:
  • Call the dealer, give them your VIN, and ask them to confirm the OEM part number (285E3-4RA0B or 285E3-9NF5A) before you buy.

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What if my original key has a different FCC ID or fewer buttons?

If your original key has a different FCC ID or button layout, do not assume this fob will work. In most cases:

• Different FCC ID = different internal hardware
• Fewer buttons (no remote start, etc.) = different remote type

Always match:

• FCC ID
• Button count
• Proximity / push-to-start style

If those don’t line up, this isn’t the right key for your car.

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Can I program this key fob myself at home?

No. This 433MHz 4A-chip proximity key cannot be self-programmed at home with simple “on/off” sequences. You’ll need:

• An automotive locksmith with Nissan/Infiniti-capable programming tools
• Or a dealer service department

They’ll pair the KR5S180144014 to your car’s immobilizer and remote system.

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How long does the battery last and how often should I replace it?

This smart key uses a CR2032 battery. Under normal daily use in the U.S.:

• Expect 2–3 years of life
• Replace sooner if:
  • Range drops
  • The car shows a “Key battery low” message
  • You have to be very close to the car for it to work

Battery swaps are quick and inexpensive, so I suggest changing it at the first sign of weak range.

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What if the key fob arrives and doesn’t work with my car?

If your locksmith tries to program the key and it won’t pair or won’t start the car:

1. Re-check:
   • FCC ID
   • Part numbers
   • Model year and trim
2. Confirm your car actually uses a 5-button proximity key with remote start.
3. If it’s still not compatible, you should use our warranty/return options instead of forcing it to program and paying extra labor.

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Can I clone my existing Nissan or Infiniti key with this fob?

Most 4A-chip Nissan/Infiniti proximity keys are not simple clones like older keys:

• Many locksmiths will add this as a new key and program it into the car
• Some advanced tools can copy data, but it’s still treated as a properly programmed smart key, not a basic “chip copy”

Tell your locksmith you’re using an aftermarket KR5S180144014 smart key so they bring the right equipment and quote you correctly.

Why Choose Keylessbest for Nissan and Infiniti Key Fobs

When you buy a 2016–2018 Nissan Maxima / Altima or Infiniti Q50 / Q60 key fob KR5S180144014 from us, you’re getting a part I’m confident putting my name on, not a random generic remote.

How We Test Each KR5S180144014 Remote

Every Nissan 5-button proximity key we ship is bench-tested before it leaves our place:

We don’t ship it if any of that doesn’t pass.

Quality Control & Compatibility Focus

I build these with OEM-level specs:

• Correct Continental board: S180144310
• Matching OE part numbers: 285E3-4RA0B / 285E3-9NF5A
• Tight shell fit, solid key ring loop, responsive buttons
• Rigorous compatibility checks so it works like the original Nissan/Infiniti smart key

If you’re cross-shopping other remotes, use those numbers as your reference point.

If you’re also replacing keys for other models later, our listings like the Nissan Rogue KR5S180144106 smart key give the same level of clarity and specs.

Why Owners Switch From Dealer Keys to Keylessbest

Most U.S. owners come to us after getting a quote at the dealer. Common reasons:

• Lower cost than OEM dealer pricing, with the same functions
• No compromise on features – proximity, push-to-start, and remote start all supported
• Flexible locksmith choice – you’re not locked into one dealership
• Warranty and return options that protect you if compatibility doesn’t line up

Bottom line: you get a KR5S180144014 key fob that looks, feels, and works like the factory remote, without paying dealer markup.