- 99% of the problem is the battery. 1% can be starter/spark plug. 7 q& G H" p; M- [! |. d% H- if it's automatic transmission, check to see if the gear is set in park position. if it's in drive or reverse, you cannot start your vehicle. & s3 a0 R4 Z- s# ]5 K2 I/ i# g! _/ R- make sure there's gas left in the tank7 t! K3 B6 ?. `* Q: V! o
- depand on how old your car is, it may have a computer built in to control fuel injection. if the computer breaks, you won't be able to start the car either.