Auto unlock procedure not working when engine turned off

samtg

My 2011 OM is a little different, looks like the 'UNLOCK' button is used for both operations:

3. Within 20 seconds of performing Step 2,
push and hold the power door lock switch to
the position (UNLOCK) for more than 5
seconds.
4. When activated, the hazard indicator will
flash twice. When deactivated, the hazard
indicator will flash once.
5. The ignition switch must be placed in the
OFF and ON position again between each
setting change.
When the automatic door unlock system is
deactivated, the doors do not unlock when the
ignition switch is placed in the OFF position. To
unlock the door manually, use the inside lock
knob or the power door lock switch (driver’s or
front passenger’s side).

But I did it exactly as stated, 1st time using the UNLOCK button, next time with the LOCK button. In both cases the flashers did not flash.

Thanks anyway for the suggestion!