Double check the polarity of the battery and/or check for bad solder connections on circuit board.I have 2 key fobs for my 2008 Smart... Key fob 1 stopped working for a few months now so I've been using key fob 2. About 2 weeks ago, key fob 2 stopped working as well so I bought some fresh batteries to put into the key fobs..
I put in the fresh batteries. However, key fob 2's transmitter functions (lock/unlock/panic/trunk) don't work at all... Key fob 1 works..
Has anybody experienced this weird phenomenon? Water wasn't spilled on the fob or dropped either...
Is there some kind of "reset" that I need to do to sync the key fob back up?