hi
the ! on your tacho signifies an error ...you probably have a broken wire on the tacho ,obviously i don't know ,what the faults are with the other systems ,but they all require speed signals and tie in with a tacho fault ..another issue could be a CAN fault ..there isn't a quick fix with out getting the codes read for the other systems ...all you can really do is check all fuses and make sure all relays are securely fitted as the do occassionally work loose
norb
February 2011