It sounds like the rotary encoder switch under the mode dial is not functioning correctly. The camera will need to be sent into Canon. Get a QUOTE FIRST repair can easily exceed the cost of the camera quickly. The EOS M series has been discontinued and replaced by the EOS R series. The lenses are NOT interchangeable between the EOS M series and EOS R series.
-Demetrius
Bodies: EOS 5D Mark IV
Lenses: EF Trinity, EF 85mm F/1.8 USM
Retired Gear: EOS 40D, EF 50mm F/1.8 STM & EF 70-210mm F/4
Speedlites: 420EX, 470EX-AI, 550EX & 600EX II-RT
