Automotive Locksmithing and Key Generation
Core concepts
Automotive work blends mechanical lock knowledge with vehicle-specific procedures. Understand the difference between a mechanical key (cuts on a blade, often with a transponder chip) and a smart/proximity key (passive RF fob). Know that transponder keys require programming to the immobilizer, and that programming procedures vary by make, model, and year.
Candidates must understand key cutting by code versus by impression, the use of key code databases, and how to originate a key when no code is available (e.g., disassembly, reading wafers, or using manufacturer procedures). Understand valet keys, master keys, and how the two differ in function.
Traps in questions
- Assuming a cut key alone starts the car; the transponder must also be programmed.
- Confusing all-keys-lost (AKL) procedures with adding a key when a working key exists.
- Overlooking that some vehicles require security access or online programming.
- Mixing up ignition and door lock wafer positions when decoding.
Worked example / rule of thumb
Rule of thumb: mechanical fit and electronic authorization are two separate gates. A key can turn the ignition cylinder perfectly and still not start the car if the chip isn't learned. When a question describes a car that cranks but won't run, suspect the immobilizer/transponder, not the cut.
For decoding: read the wafer depths in order, convert depths to cuts using the manufacturer's code card, then verify by test-fitting before cutting a customer key. Always confirm vehicle year/make/model and whether a working key is present before choosing a procedure.