I would assume the fuse is the wrong one, since 20amp is in the #47 fuse's place. 15amp fuse is supposed to be used according to the fuse chart in the car. Cigarette lighter not working.
Thanks to this, I've also downloaded the said car manual (helpful for more than just changing batteries on remote key), and found the original fuse chart, which has the same detail on fuse #47 as the similar chart I found online.
Now I just need to get the 15amp blue plated fuse from some store and test it. And also a couple of CR2025 batteries for the remote key.