how do you get into the fob to change the batteries

2004-9 Prius Keyfob Battery Change

 

Pat's description is a good one (as usual). I have changed two fob batteries so far with no issues, but the first time you open one, it may stick a bit so be patient and try again.

JeffD

 

sometimes Fobs dont work for the same reason cellphones dont work, they simply lose the electromagnetic war. other sources can affect it. i had fobs (both of them) that appeared not to work, but only in a certain location (which happened frequently due to assigned parking!!) . i had them reprogrammed which helped a little, but did not fix the issue but i never had issues with them other than at home.

well, i eventually moved from there and was visiting someone there a few months later and they mentioned that their son moved in with a gal across the courtyard (my parking space was between them) and he had wi-fi setup to share their internet connection. he had moved there just over a month before i had moved out which was right about the time i started having issues with my Fob.

now i have no proof, but...