That is not the "trunk open" light. That is a fault in your transmission, i.e., your clutch or your F1 system.
It could be detecting separate faults in the body and trans systems.
If they appear and go away at the same time, then it could your ABS system. If more than one of the ABS piston sensors fail at the same time, for example, it sends the command to not only shut off your ABS, MSR, and ride settings, but also triggers a recovery mode in your F1, causing it to illuminate the light and shift erratically. If only one sensor fails, then it does not affect the F1 system.
This is only one guess of 100 things that you could be wrong, so I highly recommend you get it scanned with a SD as soon as possible. DO NOT DRIVE THE CAR with a trans fault.
Erik Di Somma
1989 228 (past)
1985 Quattroporte III (past)