Yeah I didnt install the turbo timer... was there when I got it. So I have no idea on the wiring, but it was not doing this before my big overhaul (which had nothing to do with alarm/ignition wiring).In before you don't need a turbo timer...
I bet there is a wire you missed when installing the turbo timer that the car wants to have power when the turbo timer is running, lots of cars now have 2,3,4 or 5th ignition wires that all need power when doing a remote start if you want it to work right.
Did you do a plug and play harness?
+1 on this. Started getting an "Alarm system service required" message, but only AFTER my moonroof opened in the middle of a rainstorm and wouldn't shut, and after a few nights of the alarm randomly going off at night. Pulled an alarm module from a scrapyard car for $10, soldered in a new 7.2v NiMH battery for another $10, and haven't had any trouble since.It's probably the internal battery in the alarm siren module failing. This message pops up on start up for a few seconds when it fails and it's a very common failure at this age. The internal battery doesn't hold a charge anymore and causes all kinds of strange behavior.
You can either crack open the unit and try to replace the battery if it hasn't damaged other components (it often leaks acid everywhere), or just buy a new module for around $200-250 and swap it out. There are lots of posts on how to do it (pretty easy to DIY).
If you don't fix it, it can cause your sunroof to stop working, your alarm to go off randomly, and it can kill your battery.
I used this method a while ago.It sounds difficult but I switched.lut alarm module in like 15 mins whelp from a friend and didnt have to deal with rivets n fender liner. I had also bought a used module from eerie volvo with alifetime warranty.Its possible to get to the alarm module by pulling the nose and right headlight, then no need to pop any rivets. Just loosen up the nuts, slip the old one out, and the new one in.