ALOA CMAL key terms

A vehicle key containing a small electronic chip that broadcasts a coded signal, which the immobilizer must recognize before the engine will start. Cutting the blade alone will not start the car.

An anti-theft circuit that disables the fuel or ignition system unless a recognized key or fob is present. It links the key, the reader coil, and the engine control module.

The process of writing a unique electronic identity into a key chip and registering that identity with the vehicle so the immobilizer accepts it. Methods include on-board, off-board, and cloning.

Copying the electronic data from an existing working key into a blank chip so the duplicate carries the same identity. Cloned keys work without connecting to the vehicle's programming port.

A system where a handheld fob sends a radio signal to lock, unlock, or open the vehicle. It does not by itself authorize engine start; that is handled by the immobilizer.

A fob that communicates automatically with the vehicle when nearby, allowing push-button start and passive entry without inserting or pressing anything. Often called proximity or passive-entry key.

A feature where the vehicle detects an authorized fob near a door or trunk and unlocks automatically when the handle is touched, without the user pressing a button.

A security scheme in which each remote press transmits a new one-time code derived from a shared sequence, so a previously captured signal cannot be replayed to unlock the vehicle.

An attack that records a legitimate remote or fob transmission and rebroadcasts it later to trick the vehicle into unlocking or starting. Rolling codes are designed to defeat this.

A theft method that extends the range of a passive fob by relaying its signal between two devices, fooling the car into believing the key is nearby so it unlocks and starts.

A standardized 16-pin diagnostic connector under the dash used for scan tools, key programming, and module communication. It is also a common entry point for unauthorized key additions.

A handheld or PC-based device that communicates with vehicle modules over the diagnostic port to read codes, view live data, and perform functions such as key or fob registration.

The electronic control unit that stores authorized key identities and decides whether to permit starting or unlocking. Also called the immobilizer or body control module depending on the make.

A manufacturer-issued secret number tied to a specific vehicle that some programming procedures require before new keys can be registered. It proves authorization to add keys.

The documented proof that a locksmith or technician is entitled to add or replace keys for a vehicle, typically owner identification plus vehicle ownership documents or a verified PIN.

Documentation such as a title, registration, or bill of sale that shows the person requesting keys has a legitimate right to the vehicle. It protects against facilitating theft.

A unique 17-character code stamped on the vehicle and printed on documents that identifies make, model, year, and build details. It is used to obtain correct key blanks and programming data.

An uncut key body of the correct profile, groove pattern, and chip type for a given vehicle. Choosing the right blank prevents damage to locks and ensures the electronics will program.

Shaping a key blank to match a lock's tumblers or wafers using a mechanical or computer-controlled machine, based on an original key or manufacturer key code.

A short alphanumeric sequence assigned by the manufacturer that maps to the cut depths of a specific lock. Locksmiths use it to cut a working key without an original.

A small movable pin or wafer inside a lock that must sit at the correct height for the cylinder to turn. Incorrectly cut keys leave tumblers out of line and the lock will not rotate.

A lock design using flat spring-loaded plates that engage slots in the cylinder. Common in many vehicle doors and ignitions, and it requires a key cut to the matching wafer depths.

The rotating lock assembly that accepts the key and enables the electrical switch for starting and running the vehicle. It may also house a reader coil for the transponder.

An antenna ring around the ignition or start button that powers and reads the transponder chip in the key. A failed coil prevents the immobilizer from recognizing even a correct key.

A situation where no working key remains for a vehicle, requiring the locksmith to originate a key from the lock, key code, or manufacturer data and then program the security system.

Opening a locked vehicle without damaging it, using tools such as wedges, long-reach tools, or air bags. It is a core roadside service distinct from key origination.

Any technique that unlocks a vehicle or lock without breaking, bending, or permanently altering components. It preserves the customer's property and is the professional standard.

Specialized implements such as wedges, reach tools, and inflatable bags used to create a gap and manipulate interior handles or locks during a lockout.

The professional standards governing honesty, competence, confidentiality, and lawful conduct expected of automotive security practitioners, including refusing work that could facilitate theft.

The duty to protect a customer's personal information, key codes, PINs, and vehicle data, sharing them only as needed to perform authorized work or as required by law.

Legal responsibility for damage, loss, or injury arising from a locksmith's work. Carrying insurance and documenting procedures help manage exposure during entry and programming jobs.

Records of each job such as vehicle identity, authorization checked, work performed, and parts used. Good records support accountability, warranty claims, and defense against disputes.

Practices and technologies that deter or defeat unauthorized vehicle taking, including immobilizers, steering locks, alarms, and careful verification before duplicating keys.

A credential earned by passing an exam and meeting experience or training requirements, demonstrating verified knowledge of vehicle entry, key origination, and security systems.

Ongoing training that keeps a practitioner current as vehicle security, key technology, and diagnostic tools change. Many certifications require documented hours to renew.

An on-board method where a already-working key is used to cycle the ignition in a set sequence, allowing the vehicle to learn additional keys without a scan tool.

Reading or writing the small memory chip inside a security module to extract or install key data. It is used when diagnostic port programming is unavailable or locked out.