CML Automotive Locksmithing Flashcards

What is the most reliable method for originating a key for a vehicle when no original key exists?

Answer: VIN decoding for code cutting

Code cutting using the vehicle's VIN or manufacturer key code (obtained after ownership verification) is the most reliable origination method.

What is a transponder in an automotive key system?

Answer: A microchip in the key head that communicates with the vehicle's immobilizer

A transponder is an electronic chip embedded in the key head that transmits an authorization code to the vehicle's immobilizer to permit starting.

What is the GM VATS (Vehicle Anti-Theft System) key feature?

Answer: A resistor pellet embedded in the key blade that must match a specific resistance value

VATS uses a resistor pellet embedded in the key blade; the ignition reads its resistance value and will not allow starting if it doesn't match.

What is the most important thing to verify before cutting a key for a vehicle?

Answer: Proof of ownership such as title, registration, or ID matching registration

Verifying proof of ownership protects the locksmith from liability and ensures keys are only provided to the vehicle's legitimate owner.

Which tool is used to determine a vehicle lock's bitting without removing the cylinder?

Answer: A decoder or tryout key set

Decoder tools and tryout key sets allow a locksmith to read the bitting of an existing lock cylinder without disassembly.

What does 'all keys lost' mean for a modern transponder-equipped vehicle?

Answer: All programmed transponder codes must be erased and new keys programmed from scratch

In an all keys lost situation, the locksmith must erase all existing transponder codes and program entirely new keys, often requiring specialized equipment.