[Rickl]

It could be a problem with the engine immobilizer. Check If the red flashing security light (to the left of the clock) stops flashing when you insert the key into the ignition. If it continues to flash, either the system is not working or your key is defective. Try your spare key and see if the engine starts,

 

[diehard123]

The car Uses a smart key,noticed the security light flashes.