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
How to Change the Battery in a Lexus Key Fob | Lexus Key Battery
Key Fob Battery Low. Hold Key Close to Start Button" message in our 2017 Mazda CX-5 that we bought a little over a month ago : r/CX5
BMW Key Fob Battery Replacement (Comfort Access) - YouTube