Has any body had major problems with smartlock in there ebs i have had nothing but trouble i had to replace the ecu bcm and ignition barrel cause i lost my key and it worked absolutely fine then it started to play up, it wouldnt crank unless you shook the bcm, then it started acting like it was getting no spark now nothing it wont even crank. Help please

Check interior light works

Change bcm back to original one and leave ignition on for 30-40 min until smartlock light goes out should then start

Keep old ecm as it should still work