It is however quite normal for the display to flash ABS and Trac control systems disabled when you select any diff lock. It is not a fault, just a lawyers warning built into the electronics. I tried out my wifes new G500 yesterday. I selected low range and all of the lockers on a sandy surface. You sure do get a lot of BS flashing at you in the display. Once I went back to high with no lockers(normal) everything was fine, no fault messages.
On my '95 the only thing you get is an ABS warning light when a locker is engaged, not nearly as annoying as the '02. This is normal as well. There is no way for ABS or Trac control or stability control to work if you have it all locked up. These systems get their info from wheel speed sensors. If you have it locked, all the wheels turn at the same speed so the systems have no referance. I do wish the '02 system would chill out some on all the warnings
