Dear all

from 2 years ago i face a problem that i was trying to start the car put the was a green key light flashing when you try to start it..i went to the dealer and the fix it and told me that was a battery problem and the force me to change the battery...then from i month ago same problem happen then i Thought it is the battery also i went to change the battery in a garage thy told me that the battery is ok and the problem was from the computer in the safety system, some thing called immobilizer system and i have to reprogram and the will do for 150 us$ and the really fix it after reprogram it....then yesterday same problem happen and a green key light flashing and i have to take the car to the garage again to connect the computer and re program it again and pay 150 $ again.......any help plz