My recommendations 1. Turn off the motion sensor 
2. Format the microSD card directly in K1 every month
3. Use only the original power supply (5V, 2A).
4. Firmware: k1s-r180_en_KPH 
5. Use good microSD cards, for example WD Purple: 
https://www.wd.com/products/surveillance-solutions/wd-purple-microsd.html 
 Installation (Toyota Auris 2015):
 Best regards.