Chrysler 2006 Town and Country - Manual (Page 26)

Transmitter Battery Service
The recommended replacement battery is one CR2032
battery.
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.
2. Remove and replace the batteries. Avoid touching the
new batteries with your fingers. Skin oils may cause
battery deterioration. If you touch a battery, clean it with
rubbing alcohol.
Separating Transmitter Halves
26 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE