Some 2016-2017 Edge, Escape, Expedition, Fiesta, Flex, MKC, MKT, MKX, Mustang, Navigator and Taurus or 2017 Explorer and Super Duty vehicles equipped with SYNC 3 and built on 1-Jul-2015 and through 31-Dec-2016 may exhibit a SYNC display message of Please check your surroundings for safety along with no rear view camera image when in reverse gear. This will occur only at ambient temperatures ranging from -5 Ã…'C to 5 Ã…'C (23 Ã…'F to 41 Ã…'F). This maybe due to a temperature dependent issue within the APIM crystal oscillator circuitry. Follow the Service Procedure steps to correct the condition.