I have the same problem. No warning chime for lights on, key in ignition, etc.
Everything points to the Smart Entrance Control Unit (I guess that is the $700 module). However, when I took it to the dealer they pointed to behind the dash to fix the problem (investigate more) and that would be 2 hours of labor.
If there is a little buzzer/chime back there outside of the SECU it isn't well documented in the manual.
Saturday, December 23rd, 2006 AT 2:04 PM