topic Re: Canon 1DX Mk III losing date/time in EOS DSLR & Mirrorless Cameras

Canon 1DX Mk III losing date/time

jhaninger — Wed, 16 Jul 2025 21:09:24 GMT

My Canon 1Dx MkIII has started losing date/time. It stays for a day or two then loses it. My batteries are all in good shape. My firmware is updated to latest Ver1.9.0. I have even reset the camera to factory.
Any idea why this is happening? Thanks.

Re: Canon 1DX Mk III losing date/time

shadowsports — Wed, 16 Jul 2025 22:09:07 GMT

Greetings,

I think the first thing you'll want to do is back up your settings to an SD card, then perform a factory reset for main and custom settings. If the behavior continues, you may need to contact Canon.

I believe the 1DX mk III uses an internal capacitor. Yours might be wearing out or becoming weak. There's also a charging circuit on the mainboard that might keep the capacitor from being charged properly.

I would suggest registering the camera in your MyCanon account if not already done and initiate an inspection / repair request. You'll get a quote for the service and should know what to expect.

MyCanon https://share.google/3PUphyqJvTJesO4x2

Re: Canon 1DX Mk III losing date/time

jhaninger — Thu, 17 Jul 2025 13:45:36 GMT

Thanks Rick. I have performed a factory reset and the issue is still there. I've previously registered my camera and will call support for a repair.

Jim