genman56 Posted January 20, 2011 Share Posted January 20, 2011 After changing out my factory head unit for a aftermarket unit, I get the following alarm, security indicator light. This is a 2004 GX470 without Mark livingston sound. Any ideas that I may try to clear this alarm. Thank you. Quote Link to comment Share on other sites More sharing options...
mann777 Posted February 7, 2011 Share Posted February 7, 2011 Go to Autozone and they can do it via the scan tool.( It is free ) Quote Link to comment Share on other sites More sharing options...
cduluk Posted February 7, 2011 Share Posted February 7, 2011 What part exactly did you remove when adding the aftermarket one? Is the security light (itself) on the piece you removed? Quote Link to comment Share on other sites More sharing options...
mann777 Posted February 8, 2011 Share Posted February 8, 2011 Not sure I think maybe the cluster it is the immobilizer that he is talking about, that has got activated. It is something to do if he has a duplicate key and the transponder within is not communicating to the ECM with the ID codes of the key chip. This activated the security system. The key with an car image embedded is on the cluster blinking. Quote Link to comment Share on other sites More sharing options...
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