That is what it's supposed to do. Seat belt chimes are on a timer.

 

Came across this , not sure if it applies to your model / year or if it affects more than " door open " warning .

" Warning Chime"


Removal and Installation

The warning chime module is mounted on a bracket to the RH side of the steering column, on the instrument panel reinforcement.

The module is #10 in this picture.

Item Part Number Description

1 6C625 Low Oil Indicator Assy
2 14B193 Horn Relay Assy
3 14A323 Relay Panel Bracket Assy
4 14401 Wiring Assy
5 17D539 Wiper Control Module
6 5404304 Instrument Panel Assy
7 N803876-S36 Screw (2 Req'd)
8A N805375-S36MG Ground Screw
9 14401 Wiring Assy Ground (for Canadian Vehicles Only)
10 10D840 Chime Assy
11 18C641 Rear Window Defroster Timer (Sable)
12 14B193 Horn Relay Assy

 

Logan, doesn't apply to 96-2007 Taurus/Sable. Warning chime is part of the GEM.

 

Turn the ignition to thr run position. Using a small screwdriver/pick push up into the hole under the ignition kry/cylinder. At the =same time pull to remove the cylinder. When it slides out simply remove the orange plastic piece with a couple metal pieces attached. Toss it and slide cylinder back in.. All shoud be good. Kevin