Couple of days ago, I noticed a green LED light on my dash that I'd never seen before. It came on and then went back off before I could think much about it. I happened to be backing into a parking space at the time. This pic is not my car, but representative of it. 2019 TLX. The LED in the picture below is off, but when I noticed it on my car it was green. I put a red box around it for clarity.

Any ideas what it is? Can't find anything in the owner's manual.

 

It’s the Security System Alarm Indicator - it’s on page 11 of my manual (2020 TLX).

 

More information on pages 83 and 151. I never noticed it a green colour - always seemed flashing red when activated.

 

Thanks, I missed that in the manual. IDK why it would have flashed green. Seems like very shortly after that I got a message on the upper display about Acuralink (which I do not subscribe to) having trouble fixing to a satellite, I assume for the built in NAV system. And the Acuralink LED on the overhead console changing from red to green.