you shorted some thing out oru left some thing off
get a new one
they have to be recycled and they wont work.
You need to find the security code, (usually written down on the handbook somewhere) and input the code its usually 4 numbers.
Yes, but it will not work.
check your fuses for both problems.
check the belts
that wont work
Dead battery
Get spelling lessons!
The battery itself could be shot, the lead plates inside do wear out over time.
have you changed the battery in the thermostat?
It might be because the battery is messed up.