Keyless Entry Transmitter Battery: Service and Repair
Transmitter Battery Replacement:
The remote entry transmitter is powered by two coin-type 3-volt lithium batteries. To replace the batteries, the transmitter comes apart by twisting a thin coin between the two halves of the transmitter.
CAUTION: Do not take the front half of the transmitter apart.
Carefully swing the contacts oft the batteries and remove the old batteries. When installing the new batteries, be sure to place the positive side down as marked. Carefully swing the contacts back onto the top of the batteries. Snap the two halves back together.