After a few days of troubleshooting and working directly with JLR, the problem is unknown and the issue unresolved. The dealership advises us not to tow an RV with the vehicle in it's current condition. There is no ETA for when the Defender will be fixed and I need to get back to work soon. We decide to fly back home with a return flight to Omaha one week later. I ask the dealership how to pursue seeking reimbursement for my hotel and flights, they direct me to JLR Customer Service.