This version of the jeep has two batteries, a main and auxiliary. The auxiliary battery is used to power the cpus and such. Tens of thousands of Jeep owners have to disable this aux battery. This is due to both batteries not being charged and charged in a way that destroys both batteries. The cause of this is an engineering fault. Two batteries in parallel as in this case MUST be that same voltage and chemistry. Jeep has engineered the process to allow the aux battery to run down independent of the main. This unbalanced electrical situation destroys both batteries. Jeep will do nothing about it, the mechanics are in denial about it and can only return the vehicle back to it’s defective state.