Problem
Brake pad backing plate is rusted
![250x180-NEW-brakepad3_2](https://www.advicsaftermarket.com/wp-content/uploads/2022/09/250x180-NEW-brakepad3_2.png)
Likely Cause
- Backing plate coating was affected by high humidity or corrosive chemicals
Solutions
- Check if backing plate rust has affected pistons or other caliper parts
- Replace the corroded pads with pads featuring a better rustproofing
- Replace the caliper parts affected by rust