Through the year's car/van key remotes take quite a ‘beating’ when you think about how many times a day you press the remote to lock and unlock your car/van.
What else you keep in your pocket or bag with the remote they inevitably develop issues with broken or missing buttons, cracked cases and damaged electronics.
All this can prevent the remote from working correctly or at all and this could leave you in a very vulnerable position as you will be locked out of your car or van away from home and even if you do get in you may not be able to start the vehicle.