Can I use remote key entry? What about a remote car starter?

Mmmm toasty. Nothing like a warm car on a frigid day.   Remote starters are fine to use as long as you keep both the remote activator and antennas on the car at least 6 inches away from your ICD. No interference or interaction between a remote starting system and a heart device has ever been observed in a laboratory setting.   Same rules for remote key entry: 6 inches from your ICD.