Ford 2006 Five Hundred Owner's Manual page 83

Driver Controls
An oil change is required whenever indicated by the message center and
according to the recommended maintenance schedule. USE ONLY
RECOMMENDED ENGINE OILS.
To reset the oil monitoring system to 100% after each oil change
[approximately 5,000 miles (8,000 km) or 180 days] perform the
following:
To reset the oil life to 100% with system warnings CHANGE OIL
SOON/OIL CHANGE REQUIRED displayed:
1. Select this function from the
SETUP control for current display
mode.
2. Press and release the RESET
control to display "IF NEW OIL
HOLD RESET".
3. Press and hold the RESET
control to display OIL LIFE SET TO
100%. Your oil life is now reset.
To set the oil life to 100% without system warnings displayed:
Press SETUP to display "PRESS
RESET FOR SYS CHECK".
1. Press RESET to start the System
Check which will display "OIL LIFE
XX% RESET IF NEW".
82
2006 Five Hundred (500)
Owners Guide (post-2002-fmt)
USA (fus)