X2 on the primer pump. New style replacement. If it's leaking fuel, it'll leak air into the system when the engine is running.

The brake pad light comes on when the wear indicator is worn down and touches the rotor. It will also come on if rats have eaten the wires and they shorted to ground, or if the insulation was damaged by age or road debris. The only way to know is to pull the wheels off and do an inspection.