2010 CRV

Thank you Ed92626. I have replaced the battery with the hope of that being my problem- Batteries Plus tested it and told me it had <10% life left. Followup questions: 1-I did not notice it being low, aka it still unlocked the doors, and it did not give me any indication (that I noticed) that it was trying to tell me it was low. I did not have to reprogram the car to the key. How does the fob battery tell me to replace it? 2-My car would 'turn over' - car battery was strong, but it just wouldn't go on and start. I was told that a weak battery in the key fob (which is part of the key I stick in the ignition / no start button in my model) could prevent the car from starting. Is that true?