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Automotive Lock & Transponder Systems Flashcards

7 cards from real CPL practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Automotive Lock & Transponder Systems flashcards as text

  1. What is 'key-in-ignition' warning chime failure most commonly related to in terms of lock service?

    Answer: Damaged ignition key reminder switch

    The key-in-ignition warning chime is triggered by a small switch inside the ignition cylinder assembly that detects key presence; damage during cylinder service can disable it.

  2. Which type of automotive key blank has a laser-cut (sidewinder) pattern rather than a traditional milled edge?

    Answer: Laser-cut or internal cut key

    Laser-cut keys (also called sidewinder keys) have cuts on the center of the blade that are cut with a specialized laser key machine rather than a standard edge cutter.

  3. A Ford vehicle displays 'No Key Detected' but the blade cuts are correct. What should be checked first?

    Answer: Verify the transponder is programmed to the vehicle's PATS system

    Ford's PATS (Passive Anti-Theft System) requires the transponder chip to be programmed to the vehicle; correct cuts alone won't allow starting.

  4. What is the main advantage of using an EEPROM programmer over standard OBD-II programming for lost-all-keys situations?

    Answer: It allows key programming without needing any existing working key

    EEPROM programming directly accesses the immobilizer module's memory chip, allowing technicians to read or reset security data without needing an existing working key.

  5. What does 'TPMS' stand for, and why is it relevant when servicing automotive keys?

    Answer: Tire Pressure Monitoring System — some key fobs include TPMS reset functions

    TPMS (Tire Pressure Monitoring System) sensors can be reset via some key fobs, and locksmiths programming combination key/fobs must account for TPMS functionality.

  6. Which Chrysler/Dodge vehicle security system uses a transponder combined with a sentry key remote entry module?

    Answer: SKIM (Sentry Key Immobilizer Module)

    Chrysler's SKIM (Sentry Key Immobilizer Module) manages transponder key recognition and immobilizer functions in Chrysler, Dodge, and Jeep vehicles.

  7. When a locksmith performs automotive impressioning, what is the purpose of repeated 'rock and turn' movements?

    Answer: To mark the blank at positions where wafers or pins are binding

    The rock-and-turn motion causes binding wafers or pins to mark the key blank, revealing which positions need to be filed down.