do you have 1 or 2 keys for it ?
is there any red security light flashing or steady on ?
there is no fuse for key remote , there is a battery inside of remote that can be replaced ?
have you had the car scanned and retrieved any fault codes ?
try this and let me know if anything reset and it starts .
Master reset Procedure
1- Disconnect Battery Cables ( Negative & Positive Cables )
2- Hold cables Together for 20 secs ,then let go
3- Wait 10 minutes
4- Make sure all doors are closed
5- Reconnect battery Cables
6- Lock & unlock the vehicles using the key from driver door side (if you have a key fob with no blade key, just lock & unlock using the key fob buttons)
7- Enter the vehicle and attempt to start
Please let me know
ASE Certified Technician