A remote control system includes an in-vehicle controller (2) that is installed in a vehicle and controls in-vehicle devices installed in the vehicle; a mobile communication device (3) that remotely controls the in-vehicle devices via the in-vehicle controller (2); and a wireless communication device (4) that is installed in the vehicle and intervenes and establishes wireless communication between the in-vehicle controller (2) and the mobile communication device (3), wherein the wireless communication device (4) includes a reception-mode switching means (40A) that switches between a reception standby mode with consumption of a standby current to prepare for reception from the mobile communication device (3) and a reception dormant mode without consumption of a standby current in accordance with a time schedule.
