I purchased a 2013 Ford F150 with MFT but no navigation. I took the APIM with navigation out of another 2013 Ford F150 and installed it into mine to give me the navigation feature. Since doing that, I now get a 911 assist fault message on the touch screen as well as an audible "911 assist is not operational. Please contact dealer for service". I have tried a master reset, disconnected the battery cable, upgraded SYNC, and even tried a new RCM (Restraints Control Module) from the same truck the APIM came from. The dealer is no help because the warranty is void due to a salvage title. Can anyone help me get around this? Thanks in advance!