Here's how to disable the Belt-Minder
The driver and front passenger Belt-Minder
features can be
deactivated/activated by performing the following procedure:
Before following the procedure, make sure that:
• The parking brake is set
• The gearshift is in P (Park) (automatic transmission) and in neutral (manual transmission)
• The ignition is off
•The driver and front passenger safety belts are unbuckle
1. Turn the ignition on. DO NOT START THE ENGINE.
2. Wait until the safety belt warning light turns off (approximately one
minute).
• Step 3 must be completed within 30 seconds after the safety belt
warning light turns off.
3. For the seating position being disabled, buckle then unbuckle the
safety belt three times at a moderate speed, ending in the unbuckled
state.
• After Step 3, the safety belt warning light will be turned on for three
seconds.
4. Within approximately seven seconds of the light turning off, buckle
then unbuckle the safety belt.
• This will disable the Belt-Minder feature for that seating position if it
is currently enabled. As confirmation, the safety belt warning light will
flash four times per second for three seconds.
• This will enable the Belt-Minder
feature for that seating position if it
is currently disabled. As confirmation, the safety belt warning light will
flash four times per second for three seconds, followed by three
seconds with the light off, then followed by the safety belt warning
light flashing one time per second for three seconds again.
Also found on page 165
http://www.fordservicecontent.com/Ford_Content/catalog/owner_guides/11fstog3e.pdf