Originally Posted by ybbiz34
Looks like the key battery could be the culprit for me then as well if you're experiencing the same symptoms. At least that will be a relatively easy fix (or so you would think).
If the key battery is the cause, the fix is very simple. Just remove the cover of the battery compartment and insert a new 2450 battery.
Look at page 30 of the owner's manual to see how it's done. Unfortunately, the procedure may not be as easy as is shown. It could take a little time and effort to open the cover. Keep trying and eventually, you'll get access to the battery.