12:42:14 AM
Sun, Nov 15, 2026
Auto Key Service

24 Hour Emergency Replacement Car Keys For Lost Keys

Licensed Locksmith — over 20 years experience, 2001–2026

Mobile lost car key replacement across Nassau County — a licensed locksmith since 2001, on the way day or night.

Got a situation that calls for replacement car keys for lost keys? Car Key Locksmith is the mobile automotive locksmith drivers in Nassau County have called since 2001.

Drivers across Long Island have trusted us since 2001 because we show up, quote honestly and finish the job. We confirm you own the vehicle, do the work at your car, and walk you through the result before we go. If you are closer to Elmont and Old Bethpage, we come there too — same price, same service.

24hour Replacement Car Keys
24hour Replacement Car Keys
Car Key Replacement
Car Key Replacement
Lost Key Replacementlongisland
Lost Key Replacementlongisland

Replacement Car Keys For Lost Keys Since 2001

Car Key Locksmith has been cutting keys and opening cars in Nassau County since 2001. Lost Car Key Replacement — making a brand-new working key when every key is gone — even with no spare and no original to copy — is one of the most common calls we get, and our technicians handle it at your car, usually in a single visit.

Everything We Handle

  • Most makes and models, from basic metal keys to push-to-start smart keys
  • Transponder chip or smart key programmed to your car's immobilizer so it actually starts
  • Remote functions paired: lock, unlock, trunk and panic
  • The lost key erased from the car's memory where supported, so it can't start the car if someone finds it

Vehicle Coverage

Whatever you drive, there is a good chance we have the key. We work on Infiniti, Hyundai, Mercedes-Benz, BMW, Land Rover, Acura, Kia, Honda and Subaru — and many more — including remote-head keys, push-to-start smart keys, basic metal keys and proximity fobs.

Mobile Service, Island-Wide

Wherever you are on Long Island, there is a good chance we are nearby. Recent calls include Merrick, Plainview and Roosevelt. Full list: service area.

Two Decades of Calls

From our base in Hewlett, NY, we have served Nassau County since 2001. Many of our customers found us in an emergency and kept our number for the next time.

Decades of car key calls have taught us to come prepared. Before we set off, we ask the right questions, so the technician arrives with what the job needs.

Helpful Tips

  • Don't force a key that won't turn; check that the steering lock isn't engaged first.
  • Get a spare made while you still have a working key — it costs far less than an all-keys-lost call.
  • Have the year, make and model ready — it speeds up the quote.

Getting a Quote

No two jobs are identical, which is why we quote each one on the phone first. The main factors:

  • Whether the car needs its immobilizer module accessed to program an all-keys-lost key
  • The make — some European systems take extra equipment and time
  • The type of key: basic transponder, remote-head, flip key or push-to-start smart key
  • Whether you want spare keys made at the same visit

Having the year, make and model ready helps us quote even faster.

What Happens When You Call

  1. Call (516) 750-0433 with your location, the year, make and model, and whether any key still exists.
  2. We quote the job and give you an arrival window.
  3. On site we verify ownership, then cut the new key and program it to the car.
  4. We erase the lost keys from the car's memory where possible and test everything with you.

More Services From Our Technicians

  • 24 hour lockout service for cars, SUVs, trucks and vans, nights and weekends included
  • Honda and Acura ignition and key service, from worn ignitions to new remote-head keys
  • Honda remote head repair — a new shell, buttons or blade for a worn remote-head key
  • Toyota and Lexus laser cut keys and smart keys

Why Drivers Choose Car Key Locksmith

  • Upfront pricing — you get the price before we dispatch, with no surprise fees on arrival
  • Work tested in front of you before we leave
  • Most makes and models covered, from basic keys to smart keys
  • No high-pressure upsells — we quote only what you need
  • We come to you — no tow, no dealership appointment, no waiting days for parts
  • In business since 2001, serving Long Island and Queens
  • Dealer-level programming equipment in every van

Frequently Asked Questions

Can you cut laser cut keys?

Yes. We cut laser cut (sidewinder) keys on site, including Honda, Acura, GM, Toyota and Lexus laser cut keys, and program them to the car.

Which areas do you cover?

All of Nassau County, much of Suffolk County and Queens, including JFK Airport, Jones Beach, Resorts World Casino and UBS Arena.

Can you make a spare key at the same visit?

Yes, and it is the best time to do it — a spare made now costs far less than an emergency replacement later.

Can you make a key if I have no spare at all?

Yes. With your ID and registration we originate a key from the VIN or by decoding the lock, then program it to your car — no original key needed.

Will my lost key still start the car?

Not after we are done, where the car supports it: we erase lost keys from the immobilizer memory so only the keys you have will start it.

Is it cheaper than the dealer?

Usually, yes — and faster, because there is no tow, no parts order and no appointment. You get the price before we come out.

Can you do replacement car keys for lost keys on site?

Yes. We are fully mobile and come to your car, so there is no towing involved.

Do you repair ignitions?

Yes — ignition repair and replacement, including Honda and Acura ignitions that wear out and stop turning.

What if I have lost every key and have no spare?

We can still make a new key. With your ID and the registration or title, we originate a key from the VIN or the locks and program it to the car.

Your Mobile Locksmith

Call now and a technician can usually be with you within the hour.

(516) 750-0433
Licensed locksmith with over 20 years of experience, serving drivers since 2001