2014 Mercedes S-Class Key Replacement

The 2014–2026 S-Class uses the same key setup, so everything on this page applies to those years too. The full picture is on the Mercedes-Benz S-Class key guide.

2014 Mercedes-Benz S-Class: key facts

Key type: Smart / proximity key
Push-to-start: Yes
Transponder chip: FBS4 (DAS4)
Programming: Dealer-only (we'll tell you before you spend anything)
All keys lost: We can originate new keys on site

W222 — the first Mercedes designed around FBS4: Mercedes' own fallback-process bulletin (S-B-80.57/62e, hosted at static.nhtsa.gov) lists model 222 as FBS4 for all model years, and Abrites lists the W222 among FBS4 vehicles. Added and replacement keys are effectively dealer-only: VIN-coded keys ordered through Mercedes and enabled with the car present in Xentry. We say so plainly and help with lockouts and diagnosis instead.

What key does the 2014 S-Class use?

The 2014 S-Class is the W222, the first Mercedes designed around the FBS4 immobilizer system (also written DAS4). Mercedes' own fallback-process bulletin lists model 222 as FBS4 for every model year, so there is no early-or-late split to worry about on this car. The key is a smart proximity fob: it stays in your pocket, the car senses it, and you start the engine with the push button.

Every fob also carries a mechanical backup key. That matters more than people expect, because it is your way into the car if the fob battery dies or the electronics misbehave.

For you as the owner, the practical meaning is simple. This is not a key a hardware store or a general-purpose locksmith machine can reproduce. The fob has to be a genuine VIN-coded part, and the car has to accept it through Mercedes' own software.

Can the key be duplicated, or what if all keys are lost?

Two things are true at once on this car. You do not need an original key in hand to get a new one, and an all-keys-lost situation can be solved. But the route runs through the dealer: a VIN-coded key is ordered through Mercedes and enabled with your car present, using the factory Xentry system.

That is why we say plainly that added and replacement keys for the 2014 S-Class are effectively dealer-only. We would rather tell you that on the phone than take your call, wait on a part, and leave you no better off. If you are weighing options, our Mercedes-Benz key page and the S-Class overview show how other years compare.

Original key needed to make a new one: no
All keys lost: possible, through the dealer process
Programming method: dealer-only, VIN-coded, car present
Expect a multi-day wait for the key to arrive

What can Wilshire Lock & Key do for this car?

Plenty of S-Class key trouble is not a lost key at all. The data on this model points to a few repeat offenders, and several of them are things we can sort out on site with our mobile vans or at the Westwood storefront.

Lockouts: if the fob is inside or not working, we can help you get into the car without damage.
Dead fob battery: the car reports 'key not detected' even though the fob is with you. This is often a battery issue, and we can help you work out whether it is that or something else.
Water-damaged fobs: a fob that has been through a pocket in the wash or a spill may stop communicating. We can tell you whether it looks recoverable or whether a dealer replacement is the realistic path.
Keyless antenna or start-button faults: these can look exactly like a bad key. Sorting out which part is failing can save you from ordering a new fob you never needed.

Call (213) 577-1366 and tell us what the dash says and where the fob is.
We ask a few questions to separate a fob problem from an antenna or start-button problem.
If you are locked out, a technician comes to you and gets the door open.
If the fob is the problem and a new one is required, we tell you honestly that it goes through the dealer and what to have ready, such as your VIN and proof of ownership.

Locked out or need a locksmith now?

We answer around the clock, every day of the year.

Call (213) 577-1366

What affects the cost of S-Class key work?

We will not quote numbers on a page, because the real answer depends on what is actually wrong. The main factors are straightforward.

First, whether you need a new fob at all. A dead battery or a faulty antenna costs very differently from a VIN-coded replacement ordered through Mercedes. Second, whether one key or every key is gone: an all-keys-lost order involves more dealer work than adding a spare when you still have a working fob. Third, location and timing: a lockout at night across the county is a different job from a daytime visit to our storefront at 10740 Wilshire Blvd. Finally, there is the diagnostic effort when a keyless fault is hiding behind a 'key not detected' message.

Asking before you commit is always fair. We will explain which part of the bill is ours and which part comes from the dealer, and the lighter-cost option is often fixing what is broken rather than replacing a fob that works.

What we confirm by VIN, and why call us

The technical picture for this year is verified: FBS4, smart proximity, push-to-start, dealer-only programming. The one thing we still confirm on every car is the VIN itself, because the exact fob part has to match your vehicle. If anything on your car differs from what we expect, we will say so rather than guess.

Wilshire Lock & Key has been in business since 1987, and David oversees the work. We are one company with a storefront in Westwood and our own mobile vans, not a dispatch service passing your call along. We serve 140 cities across Los Angeles and Ventura counties, and the phone is answered around the clock. For a broader look at what we do with vehicles, see our car keys page, or contact us with your VIN and symptoms.

Frequently asked questions

Does the 2014 Mercedes S-Class have a push-to-start smart key?

Yes. It uses a smart proximity fob with push-button start, and the fob includes a mechanical backup key for emergencies such as a dead battery.

Can you program a new 2014 S-Class key?

Not as a practical matter. Replacement and added keys are effectively dealer-only: a VIN-coded key is ordered through Mercedes and enabled with the car present in Xentry. We say that honestly and help with lockouts and diagnosis instead.

I lost every key to my 2014 S-Class. Is that fixable?

Yes, all-keys-lost is possible, and you do not need an original key. It goes through the dealer, and you should expect a multi-day wait for the VIN-coded key to arrive.

My S-Class says 'key not detected' but the fob is in my hand. What is wrong?

The most common cause is a dead fob battery. Water damage or a fault in the keyless antenna or start button can produce the same message, so it is worth diagnosing before ordering a new fob.

Do I need to prove ownership to get a new key?

Expect to provide your VIN and proof of ownership, since the key is coded to your specific car. Call (213) 577-1366 and we will tell you what to have ready.

What should I ask any locksmith before they work on my car?

California requires locksmith companies to hold a BSIS LCO license, and you should ask any locksmith for it. Ask, too, whether they can do the exact job on your car or whether it goes through the dealer.

We cover all these cities

Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.

Last updated 2026-10-11.