K12 security indicator warning light on red

Just had power steering problem fixed with recon unit. Local garage fitted 'new' unit for me, seems to be working fine. One thing I've noticed. Since I had the work done the security indicator light (the little car with the key) comes on red after I've been driving for about a mile, and stays on. Is this something to be concerned about? Is this something (else) that needs fixing on our 15 year old K12?
Yeah, your NATs on the Recon’ed eps has not been reset. Just a quick question; did you remove the battery? What was the fitment instructions?