Does anyone know why when I press my door locking button 3 times my LED in my drivers door stops working and the door locks sound like they have deadlocks

You are probably turning off the deadlocking and the lamp stops flashing to indicate this. Just a theory

Can confirm.. when light stops flashing and u hear the locks that means Deadlocks are switched OFF.... u can then pull the handle on the inside to open door with no dead locks.