Honda 2008 Odyssey Owner's Manual page 152

Remote Transmitter
Replacing the Transmitter Battery
SCREW
If it takes several pushes on the
button to lock or unlock the doors
and the tailgate, replace the battery
as soon as possible.
Battery type: CR1616
To replace the battery:
1. Remove the screw at the base of
the transmitter with a small
Phillips-head screwdriver.
146
BATTERY
TAB
2. Separate the transmitter by prying
its middle seam with your
fingernail.
3. Inside the transmitter, separate
the inner cover from the keypad
by releasing the two tabs on the
cover.
4. Remove the old battery from the
back of the inner cover, and note
the polarity. Make sure the
polarity of the new battery is the
same ( side facing down), then
insert it into the back of the cover.
An improperly disposed of battery
can hurt the environment.
Always confirm local regulations
for battery disposal.