2008 Lancer w/ Navigation. -

The navigation works, as does the audio functions (AM/FM/CD/DVD).

What doesn't work:
Trip computer - Avg speed & Avg MPG remain blank
Speed & MPG Graphs - Never produce any data
Altimeter and barometer - No data ever produced
Lap timer - Only the RESET button is lit up - can't start timer
CAN Bus Equipment List - Empty

Any ideas as to what the problem can be? As per other posts we've been trying to get the Bluetooth working as well.

Thank you for any insight you can provide,
Jay