Do you have the remote control door locks (key fob)? If so, the docking lights flash to indicate the locks cycles - one blink for lock and three blinks for unlock. If the lock controller malfunctions, the docking lights may blink continuously until you cycle the locks again (push the lock/unlock button on the remote). If that doesn't stop the blinking, then the lock controller has probably failed and needs to be replaced.
2004 American Tradition; 2014 Buick LaCRosse
Homebase in the Ocala Nat'l Forest near Ocala, FL