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My name is ***** ***** I am a professional here at Just Answer. I noticed that your question had not received a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.
This can be a fault with the alarm control unit/ecu itself setting off the alarm or a fault with the drivers door latch sending a false signal that it is still locked when it is actually unlocked.Either of these will cause this fault here.The fault codes would need checked/read out to see what codes are set and then from there those codes diagnosed to locate and repair the fault here.
One thing you can try if you havent yet is to try locking and unlocking the doors with the key and see if it starts.If this was already done or is attempted with no success then the codes need checked and further diagnosed to repair this.
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