From one of your post you said you installed the break actuator yourself. Did you use a used part and if so have you had any issues. Also, are you a mechanic. I have a 2007 with 110,750 miles it it went to hell all at the same time a few weeks ago. Long story short - HV battery failed, battery ECU may possibly need to be replaced and the break accuator is overcycling due to an internal leak.