Dodge 2007 Caravan - Manual (Page 26)

Transmitter Battery Service
The recommended replacement battery is one CR2032
battery.
NOTE: Perchlorate Material — special handling may
apply. See www.dtsc.ca.gov/hazardouswaste/
perchlorate
NOTE: Do not touch the battery terminals that are on
the back housing or the printed circuit board.
1. With the transmitter buttons facing down, use a thin
coin to pry the two halves of the transmitter apart. Make
sure not to damage the rubber gasket during removal.
Separating Transmitter Halves
26 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE