R5 with 70-200 f2.8L IS USM (Gen II) "motor won't shut off"

[Inkjetsetter]

The motor on my trusty 20yr old 70-200L won't shut off. Only stops if I disable IS. Uses up battery. Online bot suggests cleaning contacts, etc. 

Anybody have similar issue? Resolved? Just trying to avoid downtime sending to lens MD.

Thanks

[deebatman316]

What camera is this being used on? 

[Inkjetsetter]

Yes, I did forget to mention that my camera is an R5. I do understand this may be a factor with an older lens. 

[deebatman316 · Accepted solution]

On mirrorless cameras the AF motor and IS runs all the time. You can Disable Continuous AF/ Preview AF and this will stop.

[Inkjetsetter]

Thank you. I do recall that setting in Menus. Didn't realize how that would affect EF lenses. I do use double back button AF, so the shutter button is no longer used for AF. 

[shadowsports]

Cheers Demetrius. 💪

The shutter button can still be used to activate AF as long as Continuous AF is disabled.