Why does fuse keep blowing in passenger side fuse box?

do not use WD40 it is not a lubricant.
copy and paste


https://fuse-box.info/infiniti/infiniti-m45-y34-2003-2004-fuses-and-relays

check switches and wiring harness for short

Not to expensive what fuse is blowing what is it labeled as on fuse box and what isnt working in the car?

its shorted, that line feed.
it saved you from the FIRE. that would happen, so dont up the fuse side. or boom.

google how to find electrical shorts in cars.
we use a meter.
got one?

Check your exhaust many times it'll be a o2 sensor wire touching the manifold causing the short to ground. Start there let us know. Hope this helps.

Replace the fan resistor located under dash near passenger side on the side of the heater box.

I can think of 2 places that were probably overlooked because I've been through this same trauma myself with GM products. One, if you have a right(passenger) side visor with a lighted mirror you'll want to check the wiring at the pivot point. Two, under the passenger side rocker panel trim, there is a ribbon harness with about 15 wires within and it may become chaffed by stepping in and out of the vehicle. Both of these have a constant feed with or without the engine running.Whoops, there's a third one I forgot about. Check the wires running through the rubber tube to the drivers door. Good luck my friend, Dana

you have a short in that circuit get you a wiring diagram at the library for your car model and trace the wires most likely one is necked and every time it makes contact with the car body it blows the fuse, it is a pains taking task but can be done just be pationt

I would check fuse in the fuse box on driver side.Should be a 15 amp fuse.

you can remove the switches in driver side and passenger to clean the contacts inside.Carbonize contacts cannot let the current to pass.