NASTF VSP · ALOA · 24/7 Dispatch

Car Key Programming Transponder & Smart Key, On-Site

Mobile car key programming for 2000 to 2024 vehicles. Transponder chips, smart proximity keys, and remote fobs paired directly to your immobilizer module on-site. NASTF VSP authorized for legal OEM data access on European brands. 40 to 60% less than the dealer.

4Keys mobile auto locksmith programming a transponder car key via OBD-II diagnostic tool

Miami-Dade License · GA Registered

Two registered entities

15,000+ jobs completed

Same Day Solutions

Rapid Mobile Dispatch

Arrival in 30 min

NASTF VSP

Vehicle Security Professional

9-sec avg phone answer

ALOA Certified

Pro Certified Technicians

25 technicians on rotation

Programming, not just cutting. The key has to talk to the car.

Every key 2000 and newer has a chip that must be paired to the immobilizer. We do this on-site through the OBD-II port using dealer-level diagnostic tools, not generic clones.

Car Key Programming

Why a cut key alone will not start your car

Every vehicle sold in the U.S. since 1997 has an immobilizer: a chip on the key that the vehicle's security module must recognize before the engine starts. A cut key blade without programming will turn the cylinder but will not crank. Programming is the digital handshake between the key's transponder and the vehicle's security memory.

We program transponder keys (2000 to 2018), smart proximity keys (2014 and newer), and remote fobs for domestic, Asian, and European brands. For European luxury (Mercedes, BMW, Range Rover, Audi, Porsche), the security code must be fetched directly from the manufacturer through NASTF VSP, the only legal channel for OEM key data in the U.S.

If you also need a new physical key cut, see Lost Car Key Replacement. If you have a working key and need a spare, see Car Key Duplication.

What We Program

The full range of 2000 to 2024 keys

Transponder keys

Standard chip-embedded metal keys for 2000-2018 Toyota, Honda, Ford, Chevy, Nissan, Hyundai, Kia, Jeep, Dodge and the other gas or diesel makes of the six origins we cover.

Smart proximity keys

Push-to-start fobs for Camry, Accord, F-150 PEPS, Silverado, Altima, Sonata, and the rest of the 2014+ push-to-start lineup.

European luxury OEM

Mercedes W205/W206, BMW FEM/BDC, Audi, Porsche, Range Rover, Bentley, Rolls-Royce. NASTF VSP required.

Remote fobs

Remote-only fobs for lock, unlock, trunk, and panic. Pairing via OBD-II diagnostic.
How It Works

Five steps from handshake to start

  1. 1

    Vehicle and key check

    Tech verifies year, make, model, and the type of key needed (transponder, smart, proximity).

  2. 2

    OBD-II connection

    Diagnostic tool connected to the OBD-II port to access the immobilizer module.

  3. 3

    OEM data fetch if needed

    For European luxury brands, the security code is fetched through NASTF VSP authorized channels.

  4. 4

    Key paired to immobilizer

    Programming protocol writes the transponder ID to the vehicle's security memory.

  5. 5

    Start and function test

    We verify engine start, lock, unlock, and remote functions. Receipt emailed on the spot.

Why 4Keys

Programming you can verify with the dealer

NASTF VSP authorized

Required for legal OEM key data on European brands.

Warranty stays intact

Authorized factory methods. The dealer cannot flag your programming as gray-market.

Fixed phone quote

No on-site upcharges. The price you hear is the price you pay.

Marked vehicles

Real branded vans. ALOA-certified, photo-ID technicians.

FAQ - Car Key Programming FAQ

Got questions? We have answers. If you don't see your question below, call us anytime - we're available 24/7.

Programming is the process of pairing a key (transponder, smart key, or proximity fob) to your vehicle's immobilizer module so it starts the engine. You need it any time you buy a new key, replace a damaged key, or add a spare for vehicles 2000 and newer.
30 to 60 minutes for most domestic and Asian brands. 60 to 90 minutes for European luxury (Mercedes, BMW, Range Rover, Audi, Porsche) because the OEM security data fetch through NASTF VSP adds time.
You get the total on the phone before anyone is dispatched, and that number does not move once we arrive. Which job it actually is decides the figure: a lockout, a duplicate, a key cut from nothing. Hardware matters, and on a car key so do the make, the model and the year. After hours, weekends and federal holidays carry a surcharge we say out loud on the same call. The published rates are at 4keyslocksmith.com/pricing/.
Yes. We are NASTF VSP authorized, which is required to legally access OEM data for Mercedes (W205, W206, GLC, GLE, S-Class), BMW (F and G chassis FEM and BDC), Audi, Porsche, Range Rover, Bentley, and Rolls-Royce. Unauthorized shops cannot do this legally.
No. NASTF VSP programming uses authorized factory methods that the manufacturer recognizes. Your warranty stays intact. Gray-market shops using bypass tools can void it and may trigger flags at dealer service visits.
Yes, this is the all-keys-lost scenario. Same process plus an immobilizer reset code fetched from the manufacturer. It is its own published line, set by the make, the model and the year. See our Lost Car Key Replacement page.
Most modern smart keys do not need full reprogramming after a battery swap, just a sync (turn the ignition on and off a few times). If the key fully de-synced, we can re-pair it on-site in 15 to 30 minutes.
That is a separate service. Module programming covers PCM, ECU, BCM, and TCM flashing for engine, body, and transmission control. See our ECU & Module Programming page.
All payment types: Visa, Mastercard, Amex, Discover, contactless (Apple Pay, Google Pay), and cash. Receipt emailed on the spot.
Insured in both states. Florida operations run as Qorinca LLC, which holds Miami-Dade County locksmith license LK-094576 (Florida has no state locksmith license). Georgia issues no state locksmith license, so Georgia operations run as 4Keys Locksmith LLC, registered with the Georgia Secretary of State. ALOA-certified, NASTF VSP authorized.
24/7 Live Dispatch

Need key programming? Find your location.

Pick FL or GA and we quote the exact price by phone before the van leaves.