Fobs stop working when engine is running

[Jaycee85]

Hi guys I have a strange one (I think). I have a 2011 ss and have the original switchblade keys along with 2 replacements I got. Everything has been ok since I bought it all of a sudden this year if I use the remote start the fobs (all 4) completely stop working. They won’t open/lock the doors pop the trunk or allow the panic button to function. If the engine is off they all work fine. Anyone ever hear of this and any idea where to look. TIA