Electronic control unit problems

Electronic control unit: Engine Control Unit. It regulates all the aspects related to the engine's proper functioning.
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Car won't start

Ford Fusion 2012 4 door 250000 miles
I pulled out the relays in my 2012 Ford fusion and when I put them back and now my car won't start and my security lock is flashing I don't know what to do everything I've tried doesn't work
Krazeekssh from United States a year ago  
KR
14 reports 
Paterpoot from United States a year ago
2007 Ford fusion I had to smog changed a. Sensor it passed drove it home won't start
Leo09 from United States 6 months ago
Did you ever get a solve for this...please tell me you did...
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