Key battery low." Oh great, what's that going to cost me? $400 and can only be done at the dealership? Oh, you can open the fob with the key itself and replace
Tried new Key Fob battery 22 CX5. Why is it not detecting my key? : r/CX5
How to ○ Honda Key Fob Remote Keyless Battery Change/Replace - YouTube
How To Replace the Battery in Your Car's Key Fob - The News Wheel