I have the ICT system with SiriusXM. When listening to SiriusXM with the ignition off, the radio will eventually display the "Energy Management" message and after 1 minute the radio shuts off. The problem arises when I turn the radio back on. Sometimes it resumes immediately and everything is working as expected. Other times it seems to go through a power up procedure which takes about a minute to complete. This is identified by the gradual display of the Jaguar leaper logo which slowly grows brighter. This is when the problem occurs. There is no SiriusXM listed as a possible source, it's as if I did not have the SiriusXM radio. The other problem is that the "HD" option for FM and AM radio is also gone. I have discovered that if I exit the car and set the alarm, wait about 15 minutes, when I restart the car the SiriusXM and "HD" options are back. The dealer tells me that I should not use the radio with the ignition off. I object to this because the radio by design does work with the ignition off. The problem, as far as I can tell, is the "Energy Management" system. Has anyone else experienced this problem?