If you have a MacBook Pro 2016 / 2017 this are the most known Issues:
Keyboard
https://www.apple.com/pt/support/keyboard-service-program-for-macbook-and-macbook-pro/
Bluetooth:
If you have a MacBook Pro 2016 / 2017 this are the most known Issues:
Keyboard
https://www.apple.com/pt/support/keyboard-service-program-for-macbook-and-macbook-pro/
Bluetooth: