1st issue: Rusted caliper pin

After a year and half, I encountered my first issue with my myvi. When I brake hard, the car will slweeks tilt to the left. Then when I was due to chane my brake pads, I realised that the left pads wears badly. I soon realized that the pin kinda jammed and wont disengaged properly. So I took out the pin and find out this.

Took it out, sand it, lube it, and install

But I still need to change it, because once its rusted, its just getting worse...

Updated: after 2 weeks, I went back to the sc and they told me to sent in my car for warranty claims,  the shitty thing is that they only could change the pin and clean the caliper holes. Which doesn't really helpful for long terms usage. Therefore, every time I send in my car,  I had to request to check the pin over and over again. Because, in the end of the day its still a safety issue.