Response to GGG's post:
I should have been clearer with my post. I don't mean that a dead battery kills DCS signal. I meant a dead battery can cause the remote to get stuck trying to get a response from the engine when it doesn't respond correctly. Now that is just a guess from me!
The app is much faster but a dead battery can still cause grief. I'd have to have a fantastic memory to list all the things that happened over the years from this. Each version of DCS probably reacted differently each time.
Response to pink TIU light: I've never seen that!!