rf hub id different than fob

[phoenix1151]

We started having typical fob issues over the last couple of months, (won't unlock, fob not detected, etc, both fobs at same time).  Rapping the fob on the hand can sometimes get it working eventually so I suspected the battery contacts in the fobs but both having issues at the same time was suspect (might be cheap fob batteries though as others have commented on).  I cleaned the contacts and pried the tabs a bit for better contact with the battery but no real improvement.  I've read elsewhere that new fobs and even new rf hubs did not solve the issue for others.  I decided to at least try buying another fob but checked my rf hub FCC ID first and found M3N-40821703 whereas the fob circuit boards had 28.4082 1302.1 (similar to info from youtube).  Looking up the ...703 hub showed it related to a Dodge Charger.  The fobs and hub worked fine for years so there must be compatibility but what is the hub difference between ...302 and ...703 ??

[phoenix1151]

Just put in new Energizer batteries and both fobs worked from inside the house no less.  We'll see how long and consistent the performance ends up.  Pretty finicky as others have said!  I guess the ...302 vs ...703 mismatch doesn't matter that much.

[diymirage]

Seems to me what you call the ID is actually the part number, in which case it makes sense they are different 

 

The PIN is what needs to match (that's what you use to program keys to the hub)

[phoenix1151]

Thanks for the reply but the part number of the ...302 rf hub is 68066349 (AG), the M3N-40821302  IS the FCC ID number.  I just wondered about differences between rf hubs since the mismatch seems to work even though fob sellers say to check the FCC ID of the receiver to make sure you buy the proper fob.  

 

I did wiggle the wire connectors on the receiver prior to the battery change so will see how reliable and long-lasting the fob performance is from here forward.