HYDRAULIC PRESSURE CONTROL UNIT, BRAKE SYSTEM, AND STRADDLE-TYPE VEHICLE

A hydraulic pressure control unit () for a brake system mounted to a straddle-type vehicle includes a housing () that accommodates a circuit board (). The housing () includes: a main body () formed with an opening () in a region opposing the circuit board (); a lid () that covers the opening () and adheres to the main body (); and a lid fixing section () provided in a space surrounded by the main body () and the lid () and fixing the lid () to the main body (). The lid fixing section () includes: an engaged section () held by one of the main body () and the lid (); and an engaging section () that is held by the other of the main body () and the lid () and engages with the engaged section ().