Vehicular remote control system and tire pressure monitoring system

A vehicular remote control system comprising

• a mobile unit portable by a user,
• a vehicle unit for establishing bidirectional wireless communication with the mobile unit, wherein the vehicle unit is able to transmit a wireless signal to the mobile unit through transmission antennas provided at a plurality of positions of a vehicle, and
• operational intention detection means, provided at the plurality of positions of the vehicle corresponding to the transmission antennas, for detecting operational intention of a user approaching the positions, wherein
• when a user's operational intention is detected by the operational intention detecting means, the detected operational intention works as a trigger, and a predetermined request signal is transmitted from the vehicle unit to the mobile unit through a first transmission antenna arranged at a position of the vehicle corresponding to a triggered position, and the vehicle unit performs a predetermined processing operation according to a received result of an answer signal transmitted from the mobile unit in reply to the request signal, and
• at the same time when the request signal is transmitted through the first transmission antenna at the triggered position, the vehicle unit transmits an interrupt signal for preventing reception of the request signal through a second transmission antenna arranged at a non-triggered position, at least while the request signal is being transmitted.