Vehicle control system, mobile terminal, and in-vehicle device

A mobile terminal configured to communicate with an in-vehicle device mounted on a vehicle,

• the in-vehicle device configured to:
• control a lock mechanism that locks and unlocks a door of the vehicle;
• and
• determine whether the mobile terminal is present inside a vehicle compartment,
• the mobile terminal comprising a processor configured to
• detect whether the mobile terminal is used;
• and
• transmit a permission signal that permits the lock mechanism to unlock the door in response to a predetermined transmission condition being satisfied, wherein
• when the in-vehicle device determines that the mobile terminal is present inside the vehicle compartment, the processor stops transmitting the permission signal until the processor detects that the mobile terminal is used.

An in-vehicle device that is mounted on a vehicle and constitutes a vehicle control system with a mobile terminal configured to communicate with the in-vehicle device, the in-vehicle device comprising a processor configure to:

• control a lock mechanism that locks and unlocks a door of the vehicle, and cause the lock mechanism to unlock the door in response to a predetermined condition being satisfied;
• and
• determine whether the mobile terminal is present inside a vehicle compartment, wherein
• the vehicle control system includes
• a detection unit configured to detect whether the mobile terminal is used,
• a system control unit configured to control the vehicle control system not to satisfy the predetermined condition in response to the processor determining that the mobile terminal is present inside the vehicle compartment, wherein
• the system control unit enables the vehicle control system to satisfy the predetermined condition in response to the detection unit detecting that the mobile terminal is used when the system control unit controls the vehicle control system not to satisfy the predetermined condition.