Some have asked about changing the FOB battery and how often it should be done. I usually go with about every year to year and a half depending on how much you use the FOB and if it is the smart FOB (button less) or the button type.
The newer bikes with the smart FOB will not start if the battery goes down so it would not be a good idea to let it go until it stops working unless you don't mind getting stuck somewhere.
It's a common battery to find in most electronic stores and other stores too.
Replacement battery for the HD FOB ...
CR2032 Lithium - Rayovac from Wallmart.
HD# 66373-06
The newer bikes with the smart FOB will not start if the battery goes down so it would not be a good idea to let it go until it stops working unless you don't mind getting stuck somewhere.
It's a common battery to find in most electronic stores and other stores too.
Replacement battery for the HD FOB ...
CR2032 Lithium - Rayovac from Wallmart.
HD# 66373-06