All,
This from Section 8N of the 2004 Service Manual, page 8N-35
Automatic Locking
The automatic locking function can be activated or deactivated with the DRB III
T. The interior power door lock
switch may also be used with the ignition switched on by pressing and holding the power door lock switch for more
than 5 seconds in either the lock (auto locking switched on) or unlock (auto locking switched off) position. The
interior power door lock switch can be inhibited with the DRB IIIT.