Emergency 24/7 Mobile Lost Car Key Replacement – Long Island & Queens

A new key made from your VIN when every key is lost. Upfront quotes on the phone and a technician who comes to you.
Mobile Lost Car Key Replacement, done at your car: that is what Car Key Locksmith offers, day and night. Lost car key replacement means making a brand-new working key when every key is gone — even with no spare and no original to copy. Our technicians bring key blanks, cutting machines and dealer-level programming tools to your car, so most jobs are finished in one visit — with a clear price before any work starts.
We are licensed and insured, and we have been doing this work in Nassau County since 2001. Car lockout, auto lockout or a key that won't turn in the ignition — one call covers it. Same-day help reaches Great Neck, Oyster Bay and Atlantic Beach as well.



Reliable Mobile Lost Car Key Replacement
Lost Car Key Replacement sounds simple, but doing it well takes the right equipment and experience. Our technicians have both: key blanks, cutting machines and dealer-level programming tools, and more than two decades of jobs across Nassau County.
We work wherever your car is — at home, at work, in a parking lot or at the roadside, and we test every key, lock and remote before we leave.
What Sets Us Apart
- Upfront pricing — you get the price before we dispatch, with no surprise fees on arrival
- Clean, careful work that respects your time and property
- Dealer-level programming equipment in every van
- An arrival window on the first call, so you are not left guessing
- Usually cheaper and faster than the dealer
Cost Factors
You get a firm number on the call, before we come out. It is based on:
- The make — some European systems take extra equipment and time
- Whether you want spare keys made at the same visit
- The type of key: basic transponder, remote-head, flip key or push-to-start smart key
- Whether the car needs its immobilizer module accessed to program an all-keys-lost key
If anything changes once we see the job, we tell you before doing it.
From Your Call to a Finished Job
- Call (516) 750-0433 with your location, the year, make and model, and whether any key still exists.
- We quote the job and give you an arrival window.
- On site we verify ownership, then cut the new key and program it to the car.
- We erase the lost keys from the car's memory where possible and test everything with you.
What We Take Care Of
- Transponder chip or smart key programmed to your car's immobilizer so it actually starts
- Remote functions paired: lock, unlock, trunk and panic
- Night, weekend and holiday calls, with the quote always given first
- A spare made at the same visit for much less than a second emergency call
Specialty Keys & Repairs
We also take care of:
- Toyota and Lexus laser cut keys and smart keys
- Licensed locksmith in New York State, fully insured
- Home and house lockouts too — we open front doors and change locks
- Lost car keys, no spare? A new key made from the VIN, right at the car
- Ignition repair and replacement, including stuck and worn ignition cylinders
- Toyota remote head repair and key fob shell replacement
Where You Can Reach Us
Our coverage runs from Bayville, Franklin Square, Mineola, Great Neck and Oceanside out across Long Island and into Queens. Not sure if we reach you? Call (516) 750-0433.
Our Technicians' Advice
- If a smart key dies, look for a hidden metal blade inside it.
- Test the remote buttons and the trunk with the technician before we leave.
- Keep a spare somewhere other than the car itself.
- If a key breaks in the lock, leave the piece in and call us rather than digging at it.
Frequently Asked Questions
Are your technicians licensed and insured?
Yes. We are a licensed locksmith in New York State, every technician is insured, and we verify ownership before every job.
Do you have dealer programming tools?
Yes. We use dealer-level software, including Ford FDRS and GM GDS2, to program keys on newer Ford and GM vehicles that generic tools can't reach.
How much will it cost?
It depends on the vehicle and the key or lock involved. Call (516) 750-0433 with the year, make and model and we give you the exact price before we dispatch.
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.
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.
How long have you been in business?
Since 2001. Car Key Locksmith is based in Hewlett, NY, and has served drivers across Long Island and Queens for more than two decades.
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.
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.
Stuck Right Now?
A locksmith since 2001: call for an upfront quote and an arrival time.
(516) 750-0433
