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My radio in a Terracan highlander Oct 2004 build has defaulted to a 4 letter code after battery was replaced. How do I insert the radio code to reactivate the radio?
You can find OEM owners manuals at hmaservice.com. Join the website, click "Service Information" then click "OM". You'll find all owners manuals there.
Or if you have your owners manual, you should find it in there.