Autofocus on my 5D Markll isn't working

[SarahRodgers]

Hello! So I had a 5DM2 that I happily used for a few years before upgrading to the Mark IV. When I stopped using the MarkII, everything was working on it. It sat unused with my other gear for 3-4 months and then I pull it out to take a picture/compare the colors of the two cameras, and the autofocus is no longer working.... I push on the shutter halfway and nothing happens. And yes, I checked to make sure it was in AF and not MF. What else do I need to check? I want to keep it as my backup camera, but super frustrated the the AF isn't working.

Andy advice is appreciated!

Thanks!

[ebiggs1]

You gotta go down the tedious road of troubleshooting.  Try a different lens, another battery, charger, remove any battery grip reset the camera, etc. Everything that can effect a camera needs to be tried with something else.

I very rarely suggest anyone clean the contacts between the lens and camera but in your case it might be a good idea.  Alcohol (not JD Black  ), the rubbing kind, and a q-tip will do it.

[SarahRodgers]

I'll try all of this, but I think i've already tried the different battery/different lens. I'll reset everything and see if that works!

[lly3988]

Have you ever set up back button focus and you forgot ? It happened ti me before.

[SarahRodgers]

I have not! But I'll do a factory reset on it. 

[Waddizzle]

Resetting the Custom programming of buttons is performed in the custom controls menu.

As far as cleaning lens and body contacts goes, just the mere act of installing or removing a lens should be sufficient. If you cannot see foreign material or discoloration do not even bother with trying to clean the contacts. Risks far outweigh any chance of a slim benefit.