I dont no amything about these cars but i changed my aunts thermastat housing or casing in hers and threw it all back together and now it want start it wont turn over or anything so i checked the grounds and fuses and they all seem good do you think maybe it has a bad starter no clicking or nothing on it. Thanks for looking

 

What model?

 

it may be the vats system (look it up) or check ignition fuse

 

after you do the above plan on getting a new key soon the chip might be damaged if it happens more than once.