Why does this vehicle not start after setting for 5 to six days?

What is your question?

This vehicle has power to dash for electronics but not enough to start engine. Just get the normal clicking sound from solenoid not getting enough power to turn over the starter. Toyota has disconnected the remote starter and done some other checking but the problem persists. Any help???

What makes this problem better or worse?

just setting without being started. Doesn't matter if you set security or not.

How long has your 2015 Toyota Avalon had this problem?

bought vehicle 4/17. car lot had to put in new battery at the lot. No problems if started every few days.