What causes lock cylinder to stay in start position?

* Worn ignition switch: The ignition switch is responsible for powering the starter motor and allowing the key to be turned. If the ignition switch is worn, it may not be able to fully engage the starter motor, causing the key to stay in the start position.

* Damaged shift interlock: The shift interlock is a safety feature that prevents the car from being started in gear. If the shift interlock is damaged, it may not be able to fully engage, allowing the key to be turned even if the car is in gear.

* Faulty wiring: The wiring that connects the ignition switch to the starter motor can become damaged or loose, which can prevent the starter motor from receiving power and causing the key to stay in the start position.

* Faulty starter motor: If the starter motor itself is faulty, it may not be able to engage fully, causing the key to stay in the start position.