Keyless Entry Transmitter Battery: Service and Repair
MX-6:
626:
Replacing the Battery
1. Pry apart the transmitter by using a thin coin or other suitable tool.
2. Install the new batteries with the (-) side facing up.
Battery specification:
Lithium CR2016 x 2 or the equivalent
3. Snap the transmitter together.
Note
^ The batteries will last about 2 years when used an average of 10 times per day.