how to remove interior fuse box on 2015 prius

If no one shares an easier way to do it, to remove the instrument panel junction block, you could do the procedure in the Repair Manual (more info) under Power Source/Network: Power Distribution: Main Body ECU: Removal. This requires removing both the upper instrument panel assembly and the lower instrument panel sub-assembly, which isn’t a trivial job.

As an alternative, if a fuse blade is stuck, perhaps you could remove it using tweezers, small needle-nose pliers, or a dental pick, but work very gently, to avoid permanently deforming the spring contacts that hold the fuse.

Before you spend any time staring up into the underside of the instrument panel, disconnect the negative (–) terminal of the auxiliary (12-volt) battery and wait for at least 90 seconds. Disconnecting the battery de-activates the supplemental restraint system, which reduces the risk of serious injury if the driver side knee airbag were somehow to fire while you’re down there.