Replaceable pin system for in-vehicle component

A replaceable pin system for an in-vehicle component, the replaceable pin system comprising:

• a holding member that is fixed to the in-vehicle component;
• and
• a pin member that is detachably connected to the holding member, wherein
• the pin member includes a body, a protruding portion, and a first engaging portion, the body having two ends opposite to each other, the protruding portion protruding from the body in a protruding direction,
• the holding member includes a base, a retainer, and a second engaging portion,
• the retainer is spaced away from the base in the protruding direction to define a rotation space together with the base, the body being rotatable within the rotation space between a first orientation and a second orientation,
• the two ends are interposed between the retainer and the base when the body is rotated to the second orientation, and
• the second engaging portion is formed in the holding member at a position where the first engaging portion is positioned when the body is rotated to the second orientation, whereby the first engaging portion engages with the second engaging portion when the body is at the second orientation.