Why do.my windows lower without motor running

Don’t quite understand your question here but when key is turned off - until one of the doors is opened - the accessories will continue to operate normally for a predetermined amount of time before becoming deactivated by the control module.. That’s normal operation. Now IF you mean you find all windows have lowered but you don’t know why - that is because the remote unlock button has been pressed (maybe inadvertently) for 3 seconds - that is normal operation as well .... This information is available in your owners manual..!