Toyota PICNIC 2.0 Central locking system

Hello, I’ve had my Toyota PICNIC for 11 years now. I’m really happy with it. Unfortunately, however, the door locks slowly start spinning around. As the keys are slowly worn out, the door locks don’t always work. They just hook up. Couldn’t you just install a radio actuation for the ZV, so you don’t have to use the door locks anymore? If one of you knows a recommended system with at least 3 radio remote controls? Thank you so much! Greetings PCDC89