In-vehicle system and assembling method of in-vehicle system

An assembling method of an in-vehicle system that includes:

• an in-vehicle device that includes a device main unit with a panel provided on a front surface thereof;
• a cluster panel that is arranged on the panel;
• a positioning mechanism which mutually positions the panel and the cluster panel;
• a vehicle mounting bracket that is fixed to the cluster panel and the device main unit, and that is mounted on a vehicle;
• and
• multiple mounting holes that are aligned in a vehicle longitudinal direction in the vehicle mounting bracket and which correspond to screw holes which are provided on a side surface of the device main unit, each of which has a larger diameter than each of screw holes, and a vertical diameter of the mounting hole is formed to be larger as the mounting hole is positioned towards a vehicle front side, the method comprising:
• positioning the cluster panel and the panel by the positioning mechanism;
• fixing the vehicle mounting bracket to the cluster panel;
• and
• fixing the vehicle mounting bracket to the device main unit by fastening screws in the screw holes through the mounting holes.