Why does Renault's serv light turn on when it is cold and not on when it is hot?

This is called tire pressure sensor, which is used to automatically detect tire pressure. When driving, if there is a problem with tire pressure, it can be found in advance to improve safety. If your vehicle is equipped with headlight-assisted steering function, then the failure of headlights is related to your tires. Didn't you fix it after you went? Be sure to change the tire pressure sensor in the 4s shop and make the basic settings, otherwise it will be bad to change it.